CA2786243A1 - Impact absorbing safety helmet for mining - Google Patents
Impact absorbing safety helmet for mining Download PDFInfo
- Publication number
- CA2786243A1 CA2786243A1 CA2786243A CA2786243A CA2786243A1 CA 2786243 A1 CA2786243 A1 CA 2786243A1 CA 2786243 A CA2786243 A CA 2786243A CA 2786243 A CA2786243 A CA 2786243A CA 2786243 A1 CA2786243 A1 CA 2786243A1
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- Prior art keywords
- outer shell
- ear
- helmet
- impact absorbing
- absorbing layer
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- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/16—Ear protection devices
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/28—Ventilating arrangements
- A42B3/281—Air ducting systems
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/30—Mounting radio sets or communication systems
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Helmets And Other Head Coverings (AREA)
Abstract
An industrial safety helmet that provides both impact and penetration resistance is disclosed. The helmet includes a dome-shaped outer shell, an impact absorbing layer, and an at least one ear-temple guard. The outer shell has a thickness ranging from about 1 mm to about 3 mm. The outer shell comprises a plurality of ventilation ports. The surface area of the plurality of ventilation ports comprises less than about 5% of the surface area of the outer shell. The impact absorbing layer is disposed substantially within and adjacent to the outer shell and has a thickness ranging from about 1 cm to about 3 cm. The ear-temple guard is sized to substantially cover a wearer's ear and temple area.
Description
IMPACT ABSORBING SAFETY HELMET FOR MINING
This application claims the benefit of U.S. Provisional Application Serial No.
61/292,599, filed January 6th, 2010.
Industrial and construction workplaces present potential hazards to persons working nearby. Hazards may include falling objects, moving machinery, and exposure.
Often, industrial and construction industrial workplaces exposes workers to other impacts beyond those to the crown of the head. For example, an industrial worker may be exposed to impacts proximate to the ear and temple areas. Many types of protective headgear are worn by individuals to help protect against head injuries. Safety helmets may provide protection from top impacts, lateral impacts, and penetrating impacts.
However, these safety helmets fail to provide protection to the wearer's ear and temple area.
Safety helmets are subjected to stringent testing requirements. Most safety helmets are tested under Impact Standards CAN/CSA-Z94.1 and ANSI Z89.1. To satisfy such penetration and shock resistance tests, manufacturers of safety helmets typically fabricate the outer shell of the safety helmet from a layer of a high-impact strength material. The thicker the layer, the heavier the helmet, which makes the helmet uncomfortable for the wearer. This discomfort can result in fatigue and/or a reluctance to use the safety helmet, either of which can result in safety lapses. Further adding to the wearer's discomfort is the use of a suspension system that retains the helmet in a certain position on the wearer's head with a series of interconnected webbing strips.
The suspension system may result in uncomfortable compression, rubbing, and pressure on the wearer's head; and may add unnecessary weight to the helmet.
It is desirable, therefore, to develop a safety helmet that provides top and side impact protection, as well as penetration protection to a wearer's head, and provide temple and ear protection, while still being comfortable and light-weight.
In accordance with one embodiment, an industrial safety helmet that provides both impact and penetration resistance is disclosed. The helmet includes a dome-shaped outer shell, an impact absorbing layer, and an at least one ear-temple guard.
The outer shell has a thickness ranging from about 1 mm to about 3 mm, and includes a plurality of ventilation ports. The surface area of the plurality of ventilation ports is less than about 5% of the surface area of the outer shell. The impact absorbing layer is disposed substantially within and adjacent to the outer shell and has a thickness ranging from about 1 cm to about 3 cm. The ear-temple guard is sized to substantially cover a wearer's ear and temple area, and the front of the at least one ear-temple guard is positioned at a distance from the front of the outer shell ranging from about 5 cm to about 12 cm, and the rear of the ear-temple guard is positioned at a distance from the rear of the outer shell ranging from about 5 cm to about 12 cm.
In accordance with another embodiment, an industrial safety helmet that provides both impact and penetration resistance is disclosed. The helmet includes a dome-shaped outer shell, an impact absorbing layer, a chin strap, and an at least one ear-temple guard.
The outer shell has a thickness ranging from about 1 mm to about 3 mm and the outer shell includes a plurality of ventilation ports. The chin strap attaches to the outer shell, the impact absorbing layer, or both. The surface area of the plurality of ventilation ports is less than about 5% of the surface area of the outer shell. The impact absorbing layer is disposed substantially within and adjacent to the outer shell and has a thickness ranging from about 1 cm to about 3 cm. The the ear-temple guard is sized to substantially cover a wearer's ear and temple area, and includes a communication device.
In accordance with yet another embodiment, an industrial safety helmet that provides both impact and penetration resistance is disclosed. The helmet includes a dome-shaped outer shell, an impact absorbing layer, and an at least one ear-temple guard.
The outer shell has a thickness ranging from about 1 mm to about 3 mm, and includes a plurality of ventilation ports. Each ventilation port has a tapered shape, having an outer end provided within the outer shell, and an inner end provided within the impact absorbing layer. The area of the outer end is greater than the area of the inner end. The plurality of ventilation ports are provided both on a crown portion of the helmet and the side portions of the helmet. The longitudinal axis of the plurality of the ventilation ports are provided at an angle a relative to the longitudinal axis of the center of the outer shell, wherein a ranges from about 20 to about 70 . The surface area of the plurality of ventilation ports is less than about 5% of the surface area of the outer shell. The impact absorbing layer is disposed substantially within and adjacent to the outer shell and has a thickness ranging from about 1 cm to about 3 cm. The ear-temple guard is sized to substantially cover a wearer's ear and temple area.
These and additional advantages and features provided by the various embodiments of the present invention will be more fully understood in view of the following detailed description, in conjunction with the drawings The following detailed description of specific embodiments of the present disclosure can be best understood when read in conjunction with the following drawings, where like structure is indicated with like reference numerals and in which:
Fig. 1 illustrates the side view of a safety helmet in accordance with one embodiment;
Fig. 2 illustrates the front view of a safety helmet in accordance with another embodiment; and Fig. 3 illustrates the rear view of a safety helmet in accordance with yet another embodiment.
The embodiments set forth in the drawings are illustrative in nature and not intended to be limiting of the invention defined by the claims. Moreover, individual features of the drawings and invention will be more fully apparent and understood in view of the detailed description.
Skilled artisans appreciate that the elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements, as well as conventional parts removed, to help improve understanding of the various embodiments of the present invention.
In one embodiment, an industrial safety helmet 10 is provided, the helmet 10comprising an outer shell 12, an impact absorbing layer, and an ear-temple guard. The outer shell has a thickness ranging from about 1 mm to about 3 mm, and comprises a plurality of ventilation ports. The ear-temple guard is designed and configured to substantially cover a wearer's ear and temple area.
The present inventors have surprisingly discovered a safety helmet that is lightweight and comfortable to wear, while still providing adequate impact and penetration resistance equal to an amount sufficient to satisfy the rigorous standards of ANSI Z89.1. In one embodiment, the present safety helmet includes a plurality of ventilation ports that provide complete ventilation around the entire surface of the wearer's head. Instead of just providing ventilation to the top of users head, the inventors have included ventilation ports around the top and side portions of the helmet.
Furthermore, in order to reach type II certification, the inventors have oriented the ventilation ports in a way to provide ventilation, while still maintaining the requisite protection resistance. In addition, the ventilation ports are provided in a tapered shape, thus preventing the ingress of objects that may cause harm to a wearer. Many traditional helmet designs have failed to simultaneously achieve the above mentioned advantages.
Some helmets fail to provide sufficient ventilation to a wearers head. Others may provide ventilation, but fail to achieve the necessary penetration resistance.
Referring initially to Fig. 1, the safety helmet 10 may include an outer shell fabricated from a rigid material. The outer shell may provide both impact and penetration resistance to the safety helmet 10. The outer shell may be comprised of a series of layers.
In one configuration, the outer shell may comprise two layers. In another configuration, the outer shell may comprise more than two layers. The outer shell 12 may comprise a material selected from the group consisting of: acrylonitrile butadiene styrene, polycarbonate, polyvinyl chloride, and combinations thereof. However, it is also contemplated that the outer shell may be formed from other suitable materials that can provide sufficient penetration and impact resistance for the wearer. The materials of the outer shell may provide flame resistance and non-conductivity. The materials of the outer shell may be selected to provide resistance to damage by ultraviolet rays. The outer shell may have a thickness ranging from about 1 mm to about 5 mm, or from about 1 mm to about 3 mm or from about 1.5 mm to about 2.5 mm. Other thicknesses are also contemplated.
The outer shell 12 may be shaped to provide protection to a substantial portion of the wearer's head. Particularly, the outer shell 12 is designed to extend longitudinally beyond a wearer's forehead, to an area adjacent the wearer's eyebrows. The bottom edge of the helmet 10 may be designed to be substantially level. Alternatively, the bottom edge of the helmet may be shaped and contoured to provided protection of all of the wearer's head (exclusive of the face, but not the forehead). The rear portion 16 is designed to extend downward beyond the level of the bottom edge of the front portion 14, and cover a majority of the back of a wearer's head.
In one configuration, the front portion 14 is designed and configured to extend to an area above the ear, and the rear portion 16 is designed to extend below the bottom of the ear. In another configuration, the helmet may be shaped like a cap, further including a rear portion 16 that is designed to extend significantly beyond the base of the cap, to the area of the head adjacent to the neck. Alternatively, it is also contemplated that the outer shell 12 may be shaped in other ways suitable to provide protection to a wearer's head, where the rear portion 16 extends to a level above the user's ear.
Referring again to Fig. 1, the outer shell 12 may comprise at least one reinforcing ridge 18, disposed horizontally along the top of the outer shell 12, extending from the front to the back of the helmet 10. In one configuration, a ridge 18 may be provided centrally along the center line of the outer shell, and two additional ridges may be oriented parallel to the central ridge. However, it is also contemplated that the ridges 18 may also be oriented and arranged in other manners suitable to provide reinforcement to the helmet 10. Furthermore, additional ridges may be provided in the outer shell to provide additional reinforcement and strength to the helmet 12. The ends of the ridges 18 may be flattened at the front and rear of the helmet 10 such that they blend seamlessly into the rest of the outer shell 12. The ridges 18 may rise from the remainder of the outer shell 12, having a height ranging from about 1 mm to about 15 mm, or from about 5 mm to about 15 mm, or from about 5 mm to about 10 mm. The width of the ridges may vary along the length of the helmet. The width of the ridge may range from about 20 mm to about 150 mm, or from about 50 mm to about 120 mm, or from about 50 mm to about 100 mm.
Referring again to Fig. 1, in one embodiment, the safety helmet 10 may include a visor 20 that extends horizontally from the front portion 14 and is designed and configured to provide protection to a wearer's face. The visor 20 may also be designed and configured to protect the wearer's eyes from ultraviolet light. The visor 20 may have a width substantially similar to the width of the front portion 14 of the helmet. The visor 20 may be sized to extend from the front portion 14 ranging from about 1 cm to about 8 cm, or from about 2 cm to about 5 cm, or from about 3 cm to about 4 cm. It should be noted that the visor 20 may be formed integrally with the outer shell 12 and impact absorbing layer as a unitary construction, or the visor 20 may be removably attachable to the outer shell 12 through various attachment means. Alternatively, it is also contemplated that the safety helmet 10 may be provided without a visor.
In one embodiment, the outer shell 12 may include a brim (not shown). The brim may wrap around the bottom of the outer shell 12 to provide additional protection to a wearer. Alternatively, the brim may extend only partially around the outside of the helmet, such as the area of the helmet adjacent the front portion. However, it should be noted that the safety helmet described herein may also be made in a variety of styles of hard hats, such as a cap-style hard hat, or any other style of hard hat that has a body portion and a brim or visor portion of unitary construction with a continuous exterior surface.
The safety helmet 10 includes an impact absorbing layer 22 disposed along the interior of the outer shell 12. The impact absorbing layer 22 may provide further impact and penetration resistance to the helmet. The impact absorbing layer 22 is designed and configured to break upon substantial impact to the helmet, redistributing the force of the impact throughout the impact absorbing layer 22, rather than the wearer's head. The impact absorbing layer 22 is designed and configured to absorb energy through deformation, and redistribute the load over a greater portion of the helmet than the force is actually applied to. The impact absorbing layer 22 may be formed using conventional in-molding techniques as understood by one skilled in the art. Alternatively, the impact absorbing layer 22 may be formed separately from the outer shell 12, and later attached using methods understood by one of ordinary skill, such as snaps, adhesive, locking devices, and combinations thereof.
The impact absorbing layer may have a thickness ranging from about 1 cm to about 3 cm. Alternatively, the impact absorbing layer may have a thickness ranging from about 1.5 to about 2.5 cm, or about 2 cm. It is also contemplated that the thickness of the impact absorbing layer 22 may vary within the outer shell 12 depending on the desired comfort and impact resistance desired in the helmet. In one configuration, the impact absorbing layer 22 may have a greater thickness where the ridges are aligned on the outer shell 12.
This application claims the benefit of U.S. Provisional Application Serial No.
61/292,599, filed January 6th, 2010.
Industrial and construction workplaces present potential hazards to persons working nearby. Hazards may include falling objects, moving machinery, and exposure.
Often, industrial and construction industrial workplaces exposes workers to other impacts beyond those to the crown of the head. For example, an industrial worker may be exposed to impacts proximate to the ear and temple areas. Many types of protective headgear are worn by individuals to help protect against head injuries. Safety helmets may provide protection from top impacts, lateral impacts, and penetrating impacts.
However, these safety helmets fail to provide protection to the wearer's ear and temple area.
Safety helmets are subjected to stringent testing requirements. Most safety helmets are tested under Impact Standards CAN/CSA-Z94.1 and ANSI Z89.1. To satisfy such penetration and shock resistance tests, manufacturers of safety helmets typically fabricate the outer shell of the safety helmet from a layer of a high-impact strength material. The thicker the layer, the heavier the helmet, which makes the helmet uncomfortable for the wearer. This discomfort can result in fatigue and/or a reluctance to use the safety helmet, either of which can result in safety lapses. Further adding to the wearer's discomfort is the use of a suspension system that retains the helmet in a certain position on the wearer's head with a series of interconnected webbing strips.
The suspension system may result in uncomfortable compression, rubbing, and pressure on the wearer's head; and may add unnecessary weight to the helmet.
It is desirable, therefore, to develop a safety helmet that provides top and side impact protection, as well as penetration protection to a wearer's head, and provide temple and ear protection, while still being comfortable and light-weight.
In accordance with one embodiment, an industrial safety helmet that provides both impact and penetration resistance is disclosed. The helmet includes a dome-shaped outer shell, an impact absorbing layer, and an at least one ear-temple guard.
The outer shell has a thickness ranging from about 1 mm to about 3 mm, and includes a plurality of ventilation ports. The surface area of the plurality of ventilation ports is less than about 5% of the surface area of the outer shell. The impact absorbing layer is disposed substantially within and adjacent to the outer shell and has a thickness ranging from about 1 cm to about 3 cm. The ear-temple guard is sized to substantially cover a wearer's ear and temple area, and the front of the at least one ear-temple guard is positioned at a distance from the front of the outer shell ranging from about 5 cm to about 12 cm, and the rear of the ear-temple guard is positioned at a distance from the rear of the outer shell ranging from about 5 cm to about 12 cm.
In accordance with another embodiment, an industrial safety helmet that provides both impact and penetration resistance is disclosed. The helmet includes a dome-shaped outer shell, an impact absorbing layer, a chin strap, and an at least one ear-temple guard.
The outer shell has a thickness ranging from about 1 mm to about 3 mm and the outer shell includes a plurality of ventilation ports. The chin strap attaches to the outer shell, the impact absorbing layer, or both. The surface area of the plurality of ventilation ports is less than about 5% of the surface area of the outer shell. The impact absorbing layer is disposed substantially within and adjacent to the outer shell and has a thickness ranging from about 1 cm to about 3 cm. The the ear-temple guard is sized to substantially cover a wearer's ear and temple area, and includes a communication device.
In accordance with yet another embodiment, an industrial safety helmet that provides both impact and penetration resistance is disclosed. The helmet includes a dome-shaped outer shell, an impact absorbing layer, and an at least one ear-temple guard.
The outer shell has a thickness ranging from about 1 mm to about 3 mm, and includes a plurality of ventilation ports. Each ventilation port has a tapered shape, having an outer end provided within the outer shell, and an inner end provided within the impact absorbing layer. The area of the outer end is greater than the area of the inner end. The plurality of ventilation ports are provided both on a crown portion of the helmet and the side portions of the helmet. The longitudinal axis of the plurality of the ventilation ports are provided at an angle a relative to the longitudinal axis of the center of the outer shell, wherein a ranges from about 20 to about 70 . The surface area of the plurality of ventilation ports is less than about 5% of the surface area of the outer shell. The impact absorbing layer is disposed substantially within and adjacent to the outer shell and has a thickness ranging from about 1 cm to about 3 cm. The ear-temple guard is sized to substantially cover a wearer's ear and temple area.
These and additional advantages and features provided by the various embodiments of the present invention will be more fully understood in view of the following detailed description, in conjunction with the drawings The following detailed description of specific embodiments of the present disclosure can be best understood when read in conjunction with the following drawings, where like structure is indicated with like reference numerals and in which:
Fig. 1 illustrates the side view of a safety helmet in accordance with one embodiment;
Fig. 2 illustrates the front view of a safety helmet in accordance with another embodiment; and Fig. 3 illustrates the rear view of a safety helmet in accordance with yet another embodiment.
The embodiments set forth in the drawings are illustrative in nature and not intended to be limiting of the invention defined by the claims. Moreover, individual features of the drawings and invention will be more fully apparent and understood in view of the detailed description.
Skilled artisans appreciate that the elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements, as well as conventional parts removed, to help improve understanding of the various embodiments of the present invention.
In one embodiment, an industrial safety helmet 10 is provided, the helmet 10comprising an outer shell 12, an impact absorbing layer, and an ear-temple guard. The outer shell has a thickness ranging from about 1 mm to about 3 mm, and comprises a plurality of ventilation ports. The ear-temple guard is designed and configured to substantially cover a wearer's ear and temple area.
The present inventors have surprisingly discovered a safety helmet that is lightweight and comfortable to wear, while still providing adequate impact and penetration resistance equal to an amount sufficient to satisfy the rigorous standards of ANSI Z89.1. In one embodiment, the present safety helmet includes a plurality of ventilation ports that provide complete ventilation around the entire surface of the wearer's head. Instead of just providing ventilation to the top of users head, the inventors have included ventilation ports around the top and side portions of the helmet.
Furthermore, in order to reach type II certification, the inventors have oriented the ventilation ports in a way to provide ventilation, while still maintaining the requisite protection resistance. In addition, the ventilation ports are provided in a tapered shape, thus preventing the ingress of objects that may cause harm to a wearer. Many traditional helmet designs have failed to simultaneously achieve the above mentioned advantages.
Some helmets fail to provide sufficient ventilation to a wearers head. Others may provide ventilation, but fail to achieve the necessary penetration resistance.
Referring initially to Fig. 1, the safety helmet 10 may include an outer shell fabricated from a rigid material. The outer shell may provide both impact and penetration resistance to the safety helmet 10. The outer shell may be comprised of a series of layers.
In one configuration, the outer shell may comprise two layers. In another configuration, the outer shell may comprise more than two layers. The outer shell 12 may comprise a material selected from the group consisting of: acrylonitrile butadiene styrene, polycarbonate, polyvinyl chloride, and combinations thereof. However, it is also contemplated that the outer shell may be formed from other suitable materials that can provide sufficient penetration and impact resistance for the wearer. The materials of the outer shell may provide flame resistance and non-conductivity. The materials of the outer shell may be selected to provide resistance to damage by ultraviolet rays. The outer shell may have a thickness ranging from about 1 mm to about 5 mm, or from about 1 mm to about 3 mm or from about 1.5 mm to about 2.5 mm. Other thicknesses are also contemplated.
The outer shell 12 may be shaped to provide protection to a substantial portion of the wearer's head. Particularly, the outer shell 12 is designed to extend longitudinally beyond a wearer's forehead, to an area adjacent the wearer's eyebrows. The bottom edge of the helmet 10 may be designed to be substantially level. Alternatively, the bottom edge of the helmet may be shaped and contoured to provided protection of all of the wearer's head (exclusive of the face, but not the forehead). The rear portion 16 is designed to extend downward beyond the level of the bottom edge of the front portion 14, and cover a majority of the back of a wearer's head.
In one configuration, the front portion 14 is designed and configured to extend to an area above the ear, and the rear portion 16 is designed to extend below the bottom of the ear. In another configuration, the helmet may be shaped like a cap, further including a rear portion 16 that is designed to extend significantly beyond the base of the cap, to the area of the head adjacent to the neck. Alternatively, it is also contemplated that the outer shell 12 may be shaped in other ways suitable to provide protection to a wearer's head, where the rear portion 16 extends to a level above the user's ear.
Referring again to Fig. 1, the outer shell 12 may comprise at least one reinforcing ridge 18, disposed horizontally along the top of the outer shell 12, extending from the front to the back of the helmet 10. In one configuration, a ridge 18 may be provided centrally along the center line of the outer shell, and two additional ridges may be oriented parallel to the central ridge. However, it is also contemplated that the ridges 18 may also be oriented and arranged in other manners suitable to provide reinforcement to the helmet 10. Furthermore, additional ridges may be provided in the outer shell to provide additional reinforcement and strength to the helmet 12. The ends of the ridges 18 may be flattened at the front and rear of the helmet 10 such that they blend seamlessly into the rest of the outer shell 12. The ridges 18 may rise from the remainder of the outer shell 12, having a height ranging from about 1 mm to about 15 mm, or from about 5 mm to about 15 mm, or from about 5 mm to about 10 mm. The width of the ridges may vary along the length of the helmet. The width of the ridge may range from about 20 mm to about 150 mm, or from about 50 mm to about 120 mm, or from about 50 mm to about 100 mm.
Referring again to Fig. 1, in one embodiment, the safety helmet 10 may include a visor 20 that extends horizontally from the front portion 14 and is designed and configured to provide protection to a wearer's face. The visor 20 may also be designed and configured to protect the wearer's eyes from ultraviolet light. The visor 20 may have a width substantially similar to the width of the front portion 14 of the helmet. The visor 20 may be sized to extend from the front portion 14 ranging from about 1 cm to about 8 cm, or from about 2 cm to about 5 cm, or from about 3 cm to about 4 cm. It should be noted that the visor 20 may be formed integrally with the outer shell 12 and impact absorbing layer as a unitary construction, or the visor 20 may be removably attachable to the outer shell 12 through various attachment means. Alternatively, it is also contemplated that the safety helmet 10 may be provided without a visor.
In one embodiment, the outer shell 12 may include a brim (not shown). The brim may wrap around the bottom of the outer shell 12 to provide additional protection to a wearer. Alternatively, the brim may extend only partially around the outside of the helmet, such as the area of the helmet adjacent the front portion. However, it should be noted that the safety helmet described herein may also be made in a variety of styles of hard hats, such as a cap-style hard hat, or any other style of hard hat that has a body portion and a brim or visor portion of unitary construction with a continuous exterior surface.
The safety helmet 10 includes an impact absorbing layer 22 disposed along the interior of the outer shell 12. The impact absorbing layer 22 may provide further impact and penetration resistance to the helmet. The impact absorbing layer 22 is designed and configured to break upon substantial impact to the helmet, redistributing the force of the impact throughout the impact absorbing layer 22, rather than the wearer's head. The impact absorbing layer 22 is designed and configured to absorb energy through deformation, and redistribute the load over a greater portion of the helmet than the force is actually applied to. The impact absorbing layer 22 may be formed using conventional in-molding techniques as understood by one skilled in the art. Alternatively, the impact absorbing layer 22 may be formed separately from the outer shell 12, and later attached using methods understood by one of ordinary skill, such as snaps, adhesive, locking devices, and combinations thereof.
The impact absorbing layer may have a thickness ranging from about 1 cm to about 3 cm. Alternatively, the impact absorbing layer may have a thickness ranging from about 1.5 to about 2.5 cm, or about 2 cm. It is also contemplated that the thickness of the impact absorbing layer 22 may vary within the outer shell 12 depending on the desired comfort and impact resistance desired in the helmet. In one configuration, the impact absorbing layer 22 may have a greater thickness where the ridges are aligned on the outer shell 12.
The impact absorbing layer 22 may comprise a collapsible material, such as a polymeric foam, suitable to absorb the impact of a lateral, angular, or top impact on the helmet 10. In one configuration, the impact absorbing layer 22 may comprise a material selected from the group consisting of: polyphenylene ether, polyethylene, expanded polystyrene, and combinations thereof. Alternatively, other materials may also be used to form the impact absorbing layer. In one configuration, the outer shell and impact absorbing layer are selected to provide a maximum deceleration of less than 85 g for a crown impact of 55 J. The outer shell and impact absorbing layer are selected to provide a maximum deceleration of less than 150 g for any 30 J impact. The outer shell and impact absorbing layer may also be selected to provide a penetration resistance compliant with Impact Standard CAN/CSA-Z94.1.
The impact absorbing layer may have a radial diameter which is selected not greater than about 20 mm than the radial diameter of the user's head.
Alternatively, the impact absorbing layer may have a radial diameter which is selected not to be greater than about 5 mm, or about 10 mm, or about 15 mm, or about 25 mm. The impact absorbing layer may be designed and configured to rest directly on a user's head. The helmet may include a plurality of sizing pads that may placed inside the impact absorbing layer to assist in fitting the impact absorbing layer tightly on a user's head.
Referring again to Fig. 1, the helmet may be designed to be retained on the head of a wearer in a variety of fashions. In one embodiment, the helmet 10 rests directly on the head of a wearer, such that the impact absorbing layer 22 contacts the top of a wearer's head directly. In one aspect, the helmet may also comprise a liner (not shown) provided on the inside of the impact absorbing layer 22 to enhance a wearer's comfort level.
In one embodiment, the safety helmet 10 may comprise a chin strap 24. The chin strap 24 may attach to the helmet 10 in multiple ways. In one embodiment, the outer shell 12 may comprise three anchors (not shown). One of the anchors may be located in the back of the helmet, whereas the other two anchors may be located on the front portion of the helmet, on opposite sides from one another. Webbing may be provided through the anchors to provide a strap that is designed and configured to loop around the wearer's chin. In another configuration, the chin strap 24 may be threaded through the impact absorbing layer 22. In yet another configuration, the chin strap 24 is looped through both the impact absorbing layer 22, and the outer shell 12. In addition, other manners of connecting the chin strap 24 to the helmet are also contemplated.
The chin strap may include a buckle (not shown), suitable to adjust the strap length of the chin strap 24, and ensure that the chin strap rests firmly on the chin of wearer with a sufficient tension to retain the helmet on the head of the user.
The chin strap 24 may comprise a nylon strap. The chin strap 24 may also comprise a chin pad (not shown) located in the center of the chin strap that is designed to interact comfortably with a wearer's chin. Furthermore, other conventional means of retaining the helmet on the head of a wearer are also contemplated.
Referring to Fig. 1, in another embodiment, a suspension 26 may be provided inside the helmet 10, operable to retain the helmet on a wearer's head. The suspension 26 may include strips of webbing material, arranged to form a network, and attach at four or more points around the circumference of the outer shell 12 and impact absorbing layer 22. Alternatively, the suspension 26 may comprise a headband that is adjustable to accommodate various headsizes. The headband 30 may be attached to the impact absorbing layer 22. The circumference of the headband 30 may be adjustable to fit the head size of the wearer. In one configuration, the headband 30 may include a ratchet mechanism 32 to allow adjustment of the size of the headband 30. The headband 30 may be provided adjacent to the impact absorbing layer that keeps the helmet securely on the wearer's head. The headband is configured and designed to rest slightly below the bump on the back of a person's head. In one configuration, the headband is not designed to absorb the impact on the helmet.
Referring to Fig. 2, the safety helmet 10 may comprise a plurality of ventilation ports 34. These ventilation ports 34 are designed to direct air flow into the interior of the safety helmet 10, where it may cool the head of the wearer. The ventilation ports 34 may be aligned substantially with the lower edges of the outer ridges 18 provided in the outer shell 12, thus the wearer's head still remains substantially protected from the penetration and impact of foreign objects by the ridges 18. The ventilation ports 34 extend through the impact absorbing layer 22, aligned with the ventilation ports provided in the outer shell 12. A plurality of ventilation ports 34 may be similarly oriented along the other ridges 18 provided in the outer shell 12. In one embodiment, about 8 ventilation ports may be provided. The number of ventilation ports 34 may range from about 2 to about 20, from about 4 to about 12, or from about 6 to about 10. However, it is also contemplated that ventilation ports 34 may be arranged in other orientations suitable to provide cooling to a wearer's head, without compromising a wearer's safety.
In another embodiment, the plurality of ventilation ports are provided both on a crown portion of the helmet and the side portions of the helmet. Any number of ventilation ports may be provided within each the crown portion and the side portion of the helmet. The meaning of crown portion and side portions will be apparent to one of ordinary skill.
The ventilation ports may vary in shape. In one configuration, the ventilation ports 34 comprise thin oval slits along the edges of the ridges 18.
Alternatively, the ventilation ports may take other shapes suitable to provide cooling to a wearer's head.
The longitudinal axis of the ventilation ports 34 may be provided at an angle a relative to the longitudinal axis of the helmet 10. Orienting the ventilation ports 34 at an angle relative to the axis of the helmet ensures that foreign objects falling directly on the helmet will not penetrate the ventilation ports. The angle a may be greater than about , or the angle a may be greater than about 30 . In one configuration, the longitudinal axis of the plurality of the ventilation ports are provided at an angle a relative to the 20 longitudinal axis of the center of the outer shell, wherein a ranges from about 20 to about 70 , or from about 25 to about 45 .
The ventilation ports 34 may have a length ranging from about 1 cm to about 5 cm, or from about 2 cm to about 4 cm. The ventilation ports 34 may have a width ranging from about 2 mm to about 6 mm, or from about 3 mm to about 8 mm.
However, it is also contemplated that the ventilation ports 34 may comprise other sizes suitable to provide ventilation to a wearer's head. In another aspect, the area of the ventilation ports 34 may range from about 150 mm2 to about 250 mm2, or about 175 mm2 to about mm2, or about 200 mm2. The surface area of the ventilation ports may comprise less than about 10% of the surface area of the outer shell, or less than about 8%, or less than about 5%, or less than about 3% of the surface area of the outer shell.
The impact absorbing layer may have a radial diameter which is selected not greater than about 20 mm than the radial diameter of the user's head.
Alternatively, the impact absorbing layer may have a radial diameter which is selected not to be greater than about 5 mm, or about 10 mm, or about 15 mm, or about 25 mm. The impact absorbing layer may be designed and configured to rest directly on a user's head. The helmet may include a plurality of sizing pads that may placed inside the impact absorbing layer to assist in fitting the impact absorbing layer tightly on a user's head.
Referring again to Fig. 1, the helmet may be designed to be retained on the head of a wearer in a variety of fashions. In one embodiment, the helmet 10 rests directly on the head of a wearer, such that the impact absorbing layer 22 contacts the top of a wearer's head directly. In one aspect, the helmet may also comprise a liner (not shown) provided on the inside of the impact absorbing layer 22 to enhance a wearer's comfort level.
In one embodiment, the safety helmet 10 may comprise a chin strap 24. The chin strap 24 may attach to the helmet 10 in multiple ways. In one embodiment, the outer shell 12 may comprise three anchors (not shown). One of the anchors may be located in the back of the helmet, whereas the other two anchors may be located on the front portion of the helmet, on opposite sides from one another. Webbing may be provided through the anchors to provide a strap that is designed and configured to loop around the wearer's chin. In another configuration, the chin strap 24 may be threaded through the impact absorbing layer 22. In yet another configuration, the chin strap 24 is looped through both the impact absorbing layer 22, and the outer shell 12. In addition, other manners of connecting the chin strap 24 to the helmet are also contemplated.
The chin strap may include a buckle (not shown), suitable to adjust the strap length of the chin strap 24, and ensure that the chin strap rests firmly on the chin of wearer with a sufficient tension to retain the helmet on the head of the user.
The chin strap 24 may comprise a nylon strap. The chin strap 24 may also comprise a chin pad (not shown) located in the center of the chin strap that is designed to interact comfortably with a wearer's chin. Furthermore, other conventional means of retaining the helmet on the head of a wearer are also contemplated.
Referring to Fig. 1, in another embodiment, a suspension 26 may be provided inside the helmet 10, operable to retain the helmet on a wearer's head. The suspension 26 may include strips of webbing material, arranged to form a network, and attach at four or more points around the circumference of the outer shell 12 and impact absorbing layer 22. Alternatively, the suspension 26 may comprise a headband that is adjustable to accommodate various headsizes. The headband 30 may be attached to the impact absorbing layer 22. The circumference of the headband 30 may be adjustable to fit the head size of the wearer. In one configuration, the headband 30 may include a ratchet mechanism 32 to allow adjustment of the size of the headband 30. The headband 30 may be provided adjacent to the impact absorbing layer that keeps the helmet securely on the wearer's head. The headband is configured and designed to rest slightly below the bump on the back of a person's head. In one configuration, the headband is not designed to absorb the impact on the helmet.
Referring to Fig. 2, the safety helmet 10 may comprise a plurality of ventilation ports 34. These ventilation ports 34 are designed to direct air flow into the interior of the safety helmet 10, where it may cool the head of the wearer. The ventilation ports 34 may be aligned substantially with the lower edges of the outer ridges 18 provided in the outer shell 12, thus the wearer's head still remains substantially protected from the penetration and impact of foreign objects by the ridges 18. The ventilation ports 34 extend through the impact absorbing layer 22, aligned with the ventilation ports provided in the outer shell 12. A plurality of ventilation ports 34 may be similarly oriented along the other ridges 18 provided in the outer shell 12. In one embodiment, about 8 ventilation ports may be provided. The number of ventilation ports 34 may range from about 2 to about 20, from about 4 to about 12, or from about 6 to about 10. However, it is also contemplated that ventilation ports 34 may be arranged in other orientations suitable to provide cooling to a wearer's head, without compromising a wearer's safety.
In another embodiment, the plurality of ventilation ports are provided both on a crown portion of the helmet and the side portions of the helmet. Any number of ventilation ports may be provided within each the crown portion and the side portion of the helmet. The meaning of crown portion and side portions will be apparent to one of ordinary skill.
The ventilation ports may vary in shape. In one configuration, the ventilation ports 34 comprise thin oval slits along the edges of the ridges 18.
Alternatively, the ventilation ports may take other shapes suitable to provide cooling to a wearer's head.
The longitudinal axis of the ventilation ports 34 may be provided at an angle a relative to the longitudinal axis of the helmet 10. Orienting the ventilation ports 34 at an angle relative to the axis of the helmet ensures that foreign objects falling directly on the helmet will not penetrate the ventilation ports. The angle a may be greater than about , or the angle a may be greater than about 30 . In one configuration, the longitudinal axis of the plurality of the ventilation ports are provided at an angle a relative to the 20 longitudinal axis of the center of the outer shell, wherein a ranges from about 20 to about 70 , or from about 25 to about 45 .
The ventilation ports 34 may have a length ranging from about 1 cm to about 5 cm, or from about 2 cm to about 4 cm. The ventilation ports 34 may have a width ranging from about 2 mm to about 6 mm, or from about 3 mm to about 8 mm.
However, it is also contemplated that the ventilation ports 34 may comprise other sizes suitable to provide ventilation to a wearer's head. In another aspect, the area of the ventilation ports 34 may range from about 150 mm2 to about 250 mm2, or about 175 mm2 to about mm2, or about 200 mm2. The surface area of the ventilation ports may comprise less than about 10% of the surface area of the outer shell, or less than about 8%, or less than about 5%, or less than about 3% of the surface area of the outer shell.
In another embodiment, each ventilation port comprises a tapered shape. The ventilation ports may have an outer end provided within the outer shell, and an inner end provided within the impact absorbing layer. The area of the outer end is greater than the area of the inner end. The area of the outer end in relation to the area of the inner end may vary, such that the area of the outer end is more than 80%, more than 50%, more than 30% or more than 20% of the area of the inner end. For example, in one embodiment, the size of the ventilation ports at the surface of the outer shell has a dimension of about 0.875" x 0.125", tapered down to 0.125" x 0.125", or tapered down to 0.25" x 0.125".
The ventilation ports 34 may include a mesh (not shown) configured to prevent large particles and debris from entering and potentially clogging the ventilation port 34.
The mesh may be manufactured from conventional materials, and sized according to the needs of the particular application. In particular embodiments of the present invention, the ventilation ports 34 may be formed at the same time as the outer shell and impact absorbing layer 22. In such an embodiment, the ventilation ports 34 may simply be defined by the mold used to form the impact absorbing layer. In other embodiments, the ventilation ports 34 may be formed through the outer shell, and impact absorbing layer by machining or other suitable means.
Referring to Fig. 1, the safety helmet 10 may include an ear-temple guard 36.
The ear-temple guard 36 is designed and configured to substantially cover the ear and temple area of the wearer's head. As used herein, "temple area" refers to the area proximate the wearer's temple area. The "ear area" includes the wearer's ear and the areas of a head immediately surrounding the ear. The ear-temple guard 36 may comprise a rigid, impact resistant insert sufficient to protect the ear and temple area from the impact and penetration of foreign objects. The ear-temple guard 36 is designed to extend from the bottom of the outer shell 12 to beyond the bottom of a wearer's ear. The ear-temple guard 36 may also be designed to cover an area extending forward from behind a wearer's ear to the wearers' temple area. In one configuration, the ear-temple guard 36 may be designed to come down behind the ear, cover the ear including the bottom of the lobe, and gradually return to the side of the head covering the cheek and temple area of the wearer. Alternatively, it is also contemplated that the ear-temple guard 36 may provide coverage to other areas of the wearer's head.
In one possible configuration, the front of the ear-temple guard 36 may be located from about 50 mm to about 100 mm, or about 60 mm to about 90 mm, or from about mm to about 90 mm, or about 77 mm, from the front of the brim. The front of the ear-temple guard 36 may be located from about 20 mm to about 40 mm, or about 25 mm to about 35 mm, or about 30 mm from the front of the helmet. The rear of the ear-temple guard 36 may be located from about 20 mm to about 40 mm, or from about 25 mm to about 35 mm, or about 30 mm from the back of the helmet.
In one aspect, the ear-temple guard 36 may be sized to protect the ear and temple areas, but not limit the vision of the wearer. In one aspect, the ear-temple guard may be sized according to the size of the helmet. In one configuration, the ear-temple guard 36 may extend from the base of the helmet from about 7 cm to about 14 cm, or from about 9 cm to about 11 cm, or from about 9.5 cm to about 10.25 cm. The ear temple guard 36 may have a horizontal dimension ranging from about 10 cm to about 16 cm, or from about 12 cm to about 15 cm, or from about 13.25 cm to about 14.5 cm. The thickness of the ear-temple guard may range from about 0.5 mm to about 8 mm, or from about 1 mm to about 3 mm, or about 2 mm. Other thicknesses are also contemplated. In another aspect, the area of the ear-temple guard may range from about 13,000 mm2 to about 17,000mm2, or from about 14,000 mm2 to about 16,000mm2, from about 14,500 mm2 to about 15,500mm2, or about 15,000 mm2.
The ear-temple guard 36 may be manufactured from a variety of materials suitable to provide adequate protection to the ear and temple area of a wearer. In one potential configuration, the ear-temple guard 36 comprises acrylonitrile butadiene styrene. In another configuration, the ear-temple guard 36 may comprise high-density polyethylene, polyethylene, polycarbonate, or poly-vinyl chloride, or combinations thereof. However, other rigid materials are also contemplated for use in ear-temple guards.
The ear-temple guard 36 may define a hearing channel 38 sufficient to allow a wearer to hear adequately, but small enough to maintain substantial protection to a wearer's ear and temple areas. The hearing channel 38 may comprise a hole in the ear-temple guard 36. The shape of the hearing channel 38 may be substantially similar to the outline of inner portion of a human ear. The hearing channel 38 may also be substantially rectangular, or similarly polygonal. In one aspect, the hearing channel is designed to align with the center of the wearer's ear. The size of the hearing channel may range depending on the size of the helmet and the particular application. In one aspect, the total area of the hearing channel 38 may range from about 800 mm2 to about 1200 mm2, or from about 900 mm2 to about 1100 mm2, or from about 1000 mm2 to about 1100 mm2. In another aspect, the length of the hearing channel 38 may be from about 40 to about 70 mm, or from about 50 to about 60 mm, or about 55 mm. The width of the hearing channel 38 may range from about 15 mm to about 35 mm, or from about 20 mm to about 30 mm, or about 24 mm. The top edge of the hearing channel may be located about 30 mm from the top of the ear-temple guard. The bottom edge of the hearing channel 38 may be located about 37 mm from the bottom of the ear temple guard 36. The back edge of the hearing channel 38 may be located about 56 mm from the back of the helmet. The front edge of the hearing channel 38 may be located about 83 mm from the front of the helmet. The measurements are in respect to the closest edge of the hearing channel, rather than the centroid. It is also contemplated that the hearing channel 38 may be sized and shaped in other fashions to provide protection, while ensure the wearer's ability to hear.
The ear-temple guard 36 may also have a hearing door (not shown) that may open or close the hearing channel 38 depending on the circumstances. In one embodiment, the hearing door may slide from an open position where the hearing channel remains unblocked to a closed position, where the hearing door completely obstructs the hearing channel 38. The hearing door may be manufactured from the same or different material as the ear-temple guard 36. Alternatively, the hearing door may slide about two fixed points to transition from an open to a closed position.
The ear-temple guard 36 may also comprise an ear filter (not shown) that is operable to limit the dust, dirt, and other material that enters the hearing channel. The ear filter does not substantially impact the ability of a user to hear. The ear filter may comprise a permeable mesh, as will be appreciated by those of ordinary skill in the art.
The ventilation ports 34 may include a mesh (not shown) configured to prevent large particles and debris from entering and potentially clogging the ventilation port 34.
The mesh may be manufactured from conventional materials, and sized according to the needs of the particular application. In particular embodiments of the present invention, the ventilation ports 34 may be formed at the same time as the outer shell and impact absorbing layer 22. In such an embodiment, the ventilation ports 34 may simply be defined by the mold used to form the impact absorbing layer. In other embodiments, the ventilation ports 34 may be formed through the outer shell, and impact absorbing layer by machining or other suitable means.
Referring to Fig. 1, the safety helmet 10 may include an ear-temple guard 36.
The ear-temple guard 36 is designed and configured to substantially cover the ear and temple area of the wearer's head. As used herein, "temple area" refers to the area proximate the wearer's temple area. The "ear area" includes the wearer's ear and the areas of a head immediately surrounding the ear. The ear-temple guard 36 may comprise a rigid, impact resistant insert sufficient to protect the ear and temple area from the impact and penetration of foreign objects. The ear-temple guard 36 is designed to extend from the bottom of the outer shell 12 to beyond the bottom of a wearer's ear. The ear-temple guard 36 may also be designed to cover an area extending forward from behind a wearer's ear to the wearers' temple area. In one configuration, the ear-temple guard 36 may be designed to come down behind the ear, cover the ear including the bottom of the lobe, and gradually return to the side of the head covering the cheek and temple area of the wearer. Alternatively, it is also contemplated that the ear-temple guard 36 may provide coverage to other areas of the wearer's head.
In one possible configuration, the front of the ear-temple guard 36 may be located from about 50 mm to about 100 mm, or about 60 mm to about 90 mm, or from about mm to about 90 mm, or about 77 mm, from the front of the brim. The front of the ear-temple guard 36 may be located from about 20 mm to about 40 mm, or about 25 mm to about 35 mm, or about 30 mm from the front of the helmet. The rear of the ear-temple guard 36 may be located from about 20 mm to about 40 mm, or from about 25 mm to about 35 mm, or about 30 mm from the back of the helmet.
In one aspect, the ear-temple guard 36 may be sized to protect the ear and temple areas, but not limit the vision of the wearer. In one aspect, the ear-temple guard may be sized according to the size of the helmet. In one configuration, the ear-temple guard 36 may extend from the base of the helmet from about 7 cm to about 14 cm, or from about 9 cm to about 11 cm, or from about 9.5 cm to about 10.25 cm. The ear temple guard 36 may have a horizontal dimension ranging from about 10 cm to about 16 cm, or from about 12 cm to about 15 cm, or from about 13.25 cm to about 14.5 cm. The thickness of the ear-temple guard may range from about 0.5 mm to about 8 mm, or from about 1 mm to about 3 mm, or about 2 mm. Other thicknesses are also contemplated. In another aspect, the area of the ear-temple guard may range from about 13,000 mm2 to about 17,000mm2, or from about 14,000 mm2 to about 16,000mm2, from about 14,500 mm2 to about 15,500mm2, or about 15,000 mm2.
The ear-temple guard 36 may be manufactured from a variety of materials suitable to provide adequate protection to the ear and temple area of a wearer. In one potential configuration, the ear-temple guard 36 comprises acrylonitrile butadiene styrene. In another configuration, the ear-temple guard 36 may comprise high-density polyethylene, polyethylene, polycarbonate, or poly-vinyl chloride, or combinations thereof. However, other rigid materials are also contemplated for use in ear-temple guards.
The ear-temple guard 36 may define a hearing channel 38 sufficient to allow a wearer to hear adequately, but small enough to maintain substantial protection to a wearer's ear and temple areas. The hearing channel 38 may comprise a hole in the ear-temple guard 36. The shape of the hearing channel 38 may be substantially similar to the outline of inner portion of a human ear. The hearing channel 38 may also be substantially rectangular, or similarly polygonal. In one aspect, the hearing channel is designed to align with the center of the wearer's ear. The size of the hearing channel may range depending on the size of the helmet and the particular application. In one aspect, the total area of the hearing channel 38 may range from about 800 mm2 to about 1200 mm2, or from about 900 mm2 to about 1100 mm2, or from about 1000 mm2 to about 1100 mm2. In another aspect, the length of the hearing channel 38 may be from about 40 to about 70 mm, or from about 50 to about 60 mm, or about 55 mm. The width of the hearing channel 38 may range from about 15 mm to about 35 mm, or from about 20 mm to about 30 mm, or about 24 mm. The top edge of the hearing channel may be located about 30 mm from the top of the ear-temple guard. The bottom edge of the hearing channel 38 may be located about 37 mm from the bottom of the ear temple guard 36. The back edge of the hearing channel 38 may be located about 56 mm from the back of the helmet. The front edge of the hearing channel 38 may be located about 83 mm from the front of the helmet. The measurements are in respect to the closest edge of the hearing channel, rather than the centroid. It is also contemplated that the hearing channel 38 may be sized and shaped in other fashions to provide protection, while ensure the wearer's ability to hear.
The ear-temple guard 36 may also have a hearing door (not shown) that may open or close the hearing channel 38 depending on the circumstances. In one embodiment, the hearing door may slide from an open position where the hearing channel remains unblocked to a closed position, where the hearing door completely obstructs the hearing channel 38. The hearing door may be manufactured from the same or different material as the ear-temple guard 36. Alternatively, the hearing door may slide about two fixed points to transition from an open to a closed position.
The ear-temple guard 36 may also comprise an ear filter (not shown) that is operable to limit the dust, dirt, and other material that enters the hearing channel. The ear filter does not substantially impact the ability of a user to hear. The ear filter may comprise a permeable mesh, as will be appreciated by those of ordinary skill in the art.
In one configuration, the ear-temple guard 36 may be attached to an insert (not shown) provided in the impact absorbing layer 22, to attach the ear-temple guard 36 to the helmet. The insert may be integrally molded into the impact absorbing layer 22, and connect to the ear-temple guard 36 using conventional attachment means such as a snap, or locking device. In one aspect, the insert will allow the impact absorbing layer 22 to clip in, but not be removed from the helmet. The ear-temple guard 36 may be attached to the outer shell 12, using a similar insert mechanism. The insert may attach the ear-temple guard 36 to the impact absorbing layer. In one configuration, the ear-temple guard slides into the foam, and is securely fastened by the insert. The insert may comprise a clip.
However, it is also contemplated that the insert may comprise other devices suitable to retain the ear-temple guard 36 to the helmet.
In yet another configuration, the ear-temple guard 36 may be integrally molded in conjunction with either the impact absorbing layer 22, or the outer shell 12.
Alternatively, the ear-temple guard may be attached to the helmet using rivets. However, it is also contemplated that the ear-temple guard may be attached to the helmet with other means that will be appreciated by one of ordinary skill. In addition, it is contemplated that the ear-temple guard 36 is configured and designed to be removable. It may releasably attach to the helmet 10, and may be removed easily by a wearer in situations where the additional protection is not necessary.
The ear-temple guard 36 may be mounted to the helmet 10 such that a distance is provided between the surface of the ear-temple guard 36 and the wearer's ear and temple area. The amount of distance provided between the wearer's temple and ear areas, and the ear-temple guard 36 may be configured and designed to vary depending on the wearer's unique head shape, but generally, at least 2 cm of distance is provided.
Alternatively, at least 1 cm of space is provided between the ear-temple guard 36 and the wearer's ear and temple area. However, it is also contemplated that the ear-temple guard 36 may be provided at other distances from the wearer's head.
The helmet 10 may also comprise a padded liner (not shown) provided along the interior of the ear-temple guard 36. The padded liner may be formed from a variety of materials, suitable to provide additional comfort to a wearer. The thickness of the padded liner may range from about 1 cm to about 4 cm, or from about 1 to about 2.5 mm, or from about 1.5 cm to about 2 cm. Alternatively, it is also contemplated that no padded liner may be used in conjunction with the ear-temple guard 36.
The safety helmet 10 may be designed and configured to have a weight ranging from about 13 ounces to about 18 ounces, or from about 13.5 ounces to about 16 ounces, or from about 13.5 ounces to about 15 ounces. Alternatively, the safety helmet 10 may have a weight of about 13.4 ounces without an ear-temple guard 36. In contrast, the Bullard-Advent Hat may have a weight of about 27 ounces, more than twice the weight of the helmet as presently disclosed, while both meeting the ANSI Z89.1 TYPE
II
standards.
The safety helmet 10 may also include a communication device (not shown) suitable to allow wearer's to communicate. The communication device may be mounted within the impact absorbing layer 22, or may be mounted adjacent to the ear-temple guard 36. A range of communication devices are contemplated for use, as will be recognized by those skilled in the art. The communication device may be used without the use of the wearer's hands. For example, the communication device may comprise blue tooth technology, a cellular phone system, or a radio communication system.
Referring to Fig. 3, the safety helmet 10 may include lighting mount 44 configured to removably retain a lighting device. The lighting mount 44 may comprise a vertically disposed flat portion of the outer shell 12, configured to provide a lighting device substantially perpendicular to the vertical axis of the helmet. The lighting mount 44 may be located on the front portion of the helmet 10 as known by those with ordinary skill. The lighting mount 44 may be provided on the front of the helmet 10.
The lighting mount 44 may be integrally molded into the outer shell of the helmet. A range of mounting systems are contemplated for use with the lighting mount 44, as well as a range of lighting devices, as understood by one of ordinary skill in the art.
The safety helmet may also comprise a face shield attached to the helmet to provide ventilation and protection to the wearer in hazardous conditions. The face shield may comprise types appreciated by one of ordinary skill.
Examples Testing of the helmet was conducted in accordance with CSA standard CAN/CSA Z94.1-05.
However, it is also contemplated that the insert may comprise other devices suitable to retain the ear-temple guard 36 to the helmet.
In yet another configuration, the ear-temple guard 36 may be integrally molded in conjunction with either the impact absorbing layer 22, or the outer shell 12.
Alternatively, the ear-temple guard may be attached to the helmet using rivets. However, it is also contemplated that the ear-temple guard may be attached to the helmet with other means that will be appreciated by one of ordinary skill. In addition, it is contemplated that the ear-temple guard 36 is configured and designed to be removable. It may releasably attach to the helmet 10, and may be removed easily by a wearer in situations where the additional protection is not necessary.
The ear-temple guard 36 may be mounted to the helmet 10 such that a distance is provided between the surface of the ear-temple guard 36 and the wearer's ear and temple area. The amount of distance provided between the wearer's temple and ear areas, and the ear-temple guard 36 may be configured and designed to vary depending on the wearer's unique head shape, but generally, at least 2 cm of distance is provided.
Alternatively, at least 1 cm of space is provided between the ear-temple guard 36 and the wearer's ear and temple area. However, it is also contemplated that the ear-temple guard 36 may be provided at other distances from the wearer's head.
The helmet 10 may also comprise a padded liner (not shown) provided along the interior of the ear-temple guard 36. The padded liner may be formed from a variety of materials, suitable to provide additional comfort to a wearer. The thickness of the padded liner may range from about 1 cm to about 4 cm, or from about 1 to about 2.5 mm, or from about 1.5 cm to about 2 cm. Alternatively, it is also contemplated that no padded liner may be used in conjunction with the ear-temple guard 36.
The safety helmet 10 may be designed and configured to have a weight ranging from about 13 ounces to about 18 ounces, or from about 13.5 ounces to about 16 ounces, or from about 13.5 ounces to about 15 ounces. Alternatively, the safety helmet 10 may have a weight of about 13.4 ounces without an ear-temple guard 36. In contrast, the Bullard-Advent Hat may have a weight of about 27 ounces, more than twice the weight of the helmet as presently disclosed, while both meeting the ANSI Z89.1 TYPE
II
standards.
The safety helmet 10 may also include a communication device (not shown) suitable to allow wearer's to communicate. The communication device may be mounted within the impact absorbing layer 22, or may be mounted adjacent to the ear-temple guard 36. A range of communication devices are contemplated for use, as will be recognized by those skilled in the art. The communication device may be used without the use of the wearer's hands. For example, the communication device may comprise blue tooth technology, a cellular phone system, or a radio communication system.
Referring to Fig. 3, the safety helmet 10 may include lighting mount 44 configured to removably retain a lighting device. The lighting mount 44 may comprise a vertically disposed flat portion of the outer shell 12, configured to provide a lighting device substantially perpendicular to the vertical axis of the helmet. The lighting mount 44 may be located on the front portion of the helmet 10 as known by those with ordinary skill. The lighting mount 44 may be provided on the front of the helmet 10.
The lighting mount 44 may be integrally molded into the outer shell of the helmet. A range of mounting systems are contemplated for use with the lighting mount 44, as well as a range of lighting devices, as understood by one of ordinary skill in the art.
The safety helmet may also comprise a face shield attached to the helmet to provide ventilation and protection to the wearer in hazardous conditions. The face shield may comprise types appreciated by one of ordinary skill.
Examples Testing of the helmet was conducted in accordance with CSA standard CAN/CSA Z94.1-05.
An impact test was conducted in accordance with Z94.1-05; Clause 10 Type 2.
Trial # Test Period w/ Peak relation to Series Acceleration 'g' of Test Conducted 1 Prior to 346.5 2 Prior to 346.5 3 Prior to 346.5 PASS
1 Post 341.6 2 Post 348.4 3 Post 347.4 Impact # Peak Acceleration Velocity IN Energy Drop Height Friction (G) (m/s) (Joules) (cm) (%) 1 346.5 4.3561 46.7 100 1.6 2 346 4.3457 46.5 100 1.9 3 345.5 4.3443 46.4 100 1.8 A penetration resistance test was also conducted as per CSA standard Z.94.1-05, Clause 10.0, Type 2.
Sample Conditioning Sample Mass Impact Actual Results # (kg) Site Impact Energy (J) 1 20 C 0.39 Crown 30.9 Pass 2 -30 C 0.39 Crown 31.2 Pass 3 50 C 0.39 Crown 31.2 Pass 4 Solvent +20 C 0.39 Crown 30.6 Pass 5 Water Immersion 0.39 Crown 30.5 Pass For the purposes of describing and defining the present invention, it is noted that reference herein to a variable being a "function" of a parameter or another variable is not intended to denote that the variable is exclusively a function of the listed parameter or variable. Rather, reference herein to a variable that is a "function" of a listed parameter is intended to be open ended such that the variable may be a function of a single parameter or a plurality of parameters.
Trial # Test Period w/ Peak relation to Series Acceleration 'g' of Test Conducted 1 Prior to 346.5 2 Prior to 346.5 3 Prior to 346.5 PASS
1 Post 341.6 2 Post 348.4 3 Post 347.4 Impact # Peak Acceleration Velocity IN Energy Drop Height Friction (G) (m/s) (Joules) (cm) (%) 1 346.5 4.3561 46.7 100 1.6 2 346 4.3457 46.5 100 1.9 3 345.5 4.3443 46.4 100 1.8 A penetration resistance test was also conducted as per CSA standard Z.94.1-05, Clause 10.0, Type 2.
Sample Conditioning Sample Mass Impact Actual Results # (kg) Site Impact Energy (J) 1 20 C 0.39 Crown 30.9 Pass 2 -30 C 0.39 Crown 31.2 Pass 3 50 C 0.39 Crown 31.2 Pass 4 Solvent +20 C 0.39 Crown 30.6 Pass 5 Water Immersion 0.39 Crown 30.5 Pass For the purposes of describing and defining the present invention, it is noted that reference herein to a variable being a "function" of a parameter or another variable is not intended to denote that the variable is exclusively a function of the listed parameter or variable. Rather, reference herein to a variable that is a "function" of a listed parameter is intended to be open ended such that the variable may be a function of a single parameter or a plurality of parameters.
It is also noted that recitations herein of "at least one" component, element, etc., should not be used to create an inference that the alternative use of the articles "a" or "an" should be limited to a single component, element, etc.
It is noted that recitations herein of a component of the present disclosure being "programmed" in a particular way, "configured" or "programmed" to embody a particular property, or function in a particular manner, are structural recitations, as opposed to recitations of intended use. More specifically, the references herein to the manner in which a component is "programmed" or "configured" denotes an existing physical condition of the component and, as such, is to be taken as a definite recitation of the structural characteristics of the component.
For the purposes of describing and defining the present invention it is noted that the terms "substantially" and "approximately" are utilized herein to represent the inherent degree of uncertainty that may be attributed to any quantitative comparison, value, measurement, or other representation.
The terms "substantially" and "approximately" are also utilized herein to represent the degree by which a quantitative representation may vary from a stated reference without resulting in a change in the basic function of the subject matter at issue.
Having described the subject matter of the present disclosure in detail and by reference to specific embodiments thereof, it is noted that the various details disclosed herein should not be taken to imply that these details relate to elements that are essential components of the various embodiments described herein, even in cases where a particular element is illustrated in each of the drawings that accompany the present description. Rather, the claims appended hereto should be taken as the sole representation of the breadth of the present disclosure and the corresponding scope of the various inventions described herein. Further, it will be apparent that modifications and variations are possible without departing from the scope of the invention defined in the appended claims. More specifically, although some aspects of the present disclosure are identified herein as preferred or particularly advantageous, it is contemplated that the present disclosure is not necessarily limited to these aspects.
It is noted that recitations herein of a component of the present disclosure being "programmed" in a particular way, "configured" or "programmed" to embody a particular property, or function in a particular manner, are structural recitations, as opposed to recitations of intended use. More specifically, the references herein to the manner in which a component is "programmed" or "configured" denotes an existing physical condition of the component and, as such, is to be taken as a definite recitation of the structural characteristics of the component.
For the purposes of describing and defining the present invention it is noted that the terms "substantially" and "approximately" are utilized herein to represent the inherent degree of uncertainty that may be attributed to any quantitative comparison, value, measurement, or other representation.
The terms "substantially" and "approximately" are also utilized herein to represent the degree by which a quantitative representation may vary from a stated reference without resulting in a change in the basic function of the subject matter at issue.
Having described the subject matter of the present disclosure in detail and by reference to specific embodiments thereof, it is noted that the various details disclosed herein should not be taken to imply that these details relate to elements that are essential components of the various embodiments described herein, even in cases where a particular element is illustrated in each of the drawings that accompany the present description. Rather, the claims appended hereto should be taken as the sole representation of the breadth of the present disclosure and the corresponding scope of the various inventions described herein. Further, it will be apparent that modifications and variations are possible without departing from the scope of the invention defined in the appended claims. More specifically, although some aspects of the present disclosure are identified herein as preferred or particularly advantageous, it is contemplated that the present disclosure is not necessarily limited to these aspects.
It is noted that one or more of the following claims utilize the term "wherein" as a transitional phrase. For the purposes of defining the present invention, it is noted that this term is introduced in the claims as an open-ended transitional phrase that is used to introduce a recitation of a series of characteristics of the structure and should be interpreted in like manner as the more commonly used open-ended preamble term "comprising."
Claims (20)
1. An industrial safety helmet that provides both impact and penetration resistance, the helmet comprising a dome-shaped outer shell, an impact absorbing layer, and an at least one ear-temple guard, wherein:
the outer shell has a thickness ranging from about 1 mm to about 3 mm, the outer shell comprises a plurality of ventilation ports, the surface area of the plurality of ventilation ports comprises less than about 5%
of the surface area of the outer shell, the impact absorbing layer is disposed substantially within and adjacent to the outer shell and has a thickness ranging from about 1 cm to about 3 cm, and the ear-temple guard is sized to substantially cover a wearer's ear and temple area, and the front of the at least one ear-temple guard is positioned at a distance from the front of the outer shell ranging from about 5 cm to about 12 cm, and the rear of the ear-temple guard is positioned at a distance from the rear of the outer shell ranging from about 5 cm to about 12 cm.
the outer shell has a thickness ranging from about 1 mm to about 3 mm, the outer shell comprises a plurality of ventilation ports, the surface area of the plurality of ventilation ports comprises less than about 5%
of the surface area of the outer shell, the impact absorbing layer is disposed substantially within and adjacent to the outer shell and has a thickness ranging from about 1 cm to about 3 cm, and the ear-temple guard is sized to substantially cover a wearer's ear and temple area, and the front of the at least one ear-temple guard is positioned at a distance from the front of the outer shell ranging from about 5 cm to about 12 cm, and the rear of the ear-temple guard is positioned at a distance from the rear of the outer shell ranging from about 5 cm to about 12 cm.
2. The safety helmet of claim 1, wherein the outer shell comprises a front portion and a rear portion, wherein the front portion is sized to extend downward to an area above the wearer's ear, wherein the rear portion is sized to extend below the bottom of a wearer's ear, and wherein the rear portion is positioned behind the at least one ear-temple guard.
3. The safety helmet of claim 1, wherein the at least one ear-temple guard comprises a hearing channel having an area ranging from about 800 mm2 to about 1200 mm2.
4. The safety helmet of claim 1, wherein the at least one ear-temple guard is removably attachable.
5. The safety helmet of claim 1, further comprising a headband disposed substantially within the impact absorbing layer, wherein the headband adjusts to a wearer's headsize and retain the safety helmet in place on a wearer's head.
6. The safety helmet of claim 1, further comprising a visor, wherein the visor may be integral with the outer shell, impact absorbing layer, or both.
7. The safety helmet of claim 1, wherein the outer shell comprises a hard plastic material selected from the group consisting of polycarbonate, polyvinyl chloride, and combinations thereof.
8. The safety helmet of claim 1, wherein the impact absorbing layer comprises an impact absorbing foam selected from the group including polyphenylene ether, polyethylene, expanded polystyrene, and combinations thereof.
9. The safety helmet of claim 1, wherein the at least one ear-temple guard comprise a material selected from the group including acrylonitrile butadiene styrene, high density polyethylene, and combinations thereof.
10. The safety helmet of claim 1, further comprising a chin strap.
11. The safety helmet of claim 1, wherein the impact absorbing layer has a thickness ranging from about 1.5 cm to about 2.5 cm.
12. The safety helmet of claim 1, wherein each ventilation port comprises a tapered shape, having an outer end provided within the outer shell, and an inner end provided within the impact absorbing layer, wherein the area of the outer end is greater than the area of the inner end.
13. The safety helmet of claim 1, the plurality of ventilation ports are provided both on a crown portion of the helmet and the side portions of the helmet.
14. The safety helmet of claim 1, wherein the longitudinal axis of the plurality of the ventilation ports are provided at an angle a relative to the longitudinal axis of the center of the outer shell, wherein a ranges from about 20° to about 70°.
15. An industrial safety helmet that provides both impact and penetration resistance, the helmet comprising: a dome-shaped outer shell, an impact absorbing layer, a chin strap, and an at least one ear-temple guard, wherein:
the outer shell has a thickness ranging from about 1 mm to about 3 mm, the outer shell comprises a plurality of ventilation ports, the chin strap attaches to the outer shell, the impact absorbing layer, or both, the surface area of the plurality of ventilation ports comprises less than about 5%
of the surface area of the outer shell, the impact absorbing layer is disposed substantially within and adjacent to the outer shell and has a thickness ranging from about 1 cm to about 3 cm, the ear-temple guard is sized to substantially cover a wearer's ear and temple area, and the ear-temple guard further comprises a communication device.
the outer shell has a thickness ranging from about 1 mm to about 3 mm, the outer shell comprises a plurality of ventilation ports, the chin strap attaches to the outer shell, the impact absorbing layer, or both, the surface area of the plurality of ventilation ports comprises less than about 5%
of the surface area of the outer shell, the impact absorbing layer is disposed substantially within and adjacent to the outer shell and has a thickness ranging from about 1 cm to about 3 cm, the ear-temple guard is sized to substantially cover a wearer's ear and temple area, and the ear-temple guard further comprises a communication device.
16. The industrial helmet of claim 15, further comprising a visor, wherein the visor may be integral with the outer shell and impact absorbing layer.
17. The safety helmet of claim 15, wherein said ear-temple guard comprise a hearing channel having an area ranging from about 800 mm2 to about 1200 mm2.
18. The safety helmet of claim 15, wherein the ear-temple guard is removably attachable to the helmet.
19. The safety helmet of claim 15, wherein the outer shell comprises a hard plastic material selected from the group consisting of polycarbonate, polyvinyl chloride, and combinations thereof; wherein the impact absorbing layer comprises an impact absorbing foam selected from the group consisting of polyphenylene ether, polyethylene, expanded polystyrene, and combinations thereof; and wherein the ear-temple guards comprise a material selected from the group consisting of acrylonitrile butadiene styrene, high density polyethylene, and combinations thereof.
20. An industrial safety helmet that provides both impact and penetration resistance, the helmet comprising: a dome-shaped outer shell, an impact absorbing layer, and an at least one ear-temple guard, wherein:
the outer shell has a thickness ranging from about 1 mm to about 3 mm, the outer shell comprises a plurality of ventilation ports, each ventilation port comprises a tapered shape, having an outer end provided within the outer shell, and an inner end provided within the impact absorbing layer, wherein the area of the outer end is greater than the area of the inner end, the plurality of ventilation ports are provided both on a crown portion of the helmet and the side portions of the helmet, the longitudinal axis of the plurality of the ventilation ports are provided at an angle a relative to the longitudinal axis of the center of the outer shell, wherein a ranges from about 20° to about 70°, the surface area of the plurality of ventilation ports comprises less than about 5%
of the surface area of the outer shell, the impact absorbing layer is disposed substantially within and adjacent to the outer shell and has a thickness ranging from about 1 cm to about 3 cm, and the ear-temple guard is sized to substantially cover a wearer's ear and temple area.
the outer shell has a thickness ranging from about 1 mm to about 3 mm, the outer shell comprises a plurality of ventilation ports, each ventilation port comprises a tapered shape, having an outer end provided within the outer shell, and an inner end provided within the impact absorbing layer, wherein the area of the outer end is greater than the area of the inner end, the plurality of ventilation ports are provided both on a crown portion of the helmet and the side portions of the helmet, the longitudinal axis of the plurality of the ventilation ports are provided at an angle a relative to the longitudinal axis of the center of the outer shell, wherein a ranges from about 20° to about 70°, the surface area of the plurality of ventilation ports comprises less than about 5%
of the surface area of the outer shell, the impact absorbing layer is disposed substantially within and adjacent to the outer shell and has a thickness ranging from about 1 cm to about 3 cm, and the ear-temple guard is sized to substantially cover a wearer's ear and temple area.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29259910P | 2010-01-06 | 2010-01-06 | |
| US61/292,599 | 2010-01-06 | ||
| US91089410A | 2010-10-25 | 2010-10-25 | |
| US12/910,894 | 2010-10-25 | ||
| PCT/US2010/060914 WO2011084660A1 (en) | 2010-01-06 | 2010-12-17 | Impact absorbing safety helmet for mining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2786243A1 true CA2786243A1 (en) | 2011-07-14 |
Family
ID=44305728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2786243A Abandoned CA2786243A1 (en) | 2010-01-06 | 2010-12-17 | Impact absorbing safety helmet for mining |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2521465A1 (en) |
| CN (1) | CN102762120A (en) |
| AU (1) | AU2010339859A1 (en) |
| CA (1) | CA2786243A1 (en) |
| WO (1) | WO2011084660A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9763488B2 (en) | 2011-09-09 | 2017-09-19 | Riddell, Inc. | Protective sports helmet |
| US10159296B2 (en) | 2013-01-18 | 2018-12-25 | Riddell, Inc. | System and method for custom forming a protective helmet for a customer's head |
| CN103615933B (en) * | 2013-11-27 | 2015-10-21 | 浙江帅孚安全科技股份有限公司 | A kind of police Intelligent safety helmet regulated with micro climate intelligent-induction |
| CA3168068A1 (en) | 2013-12-06 | 2015-06-11 | Bell Sports, Inc. | Flexible multi-layer helmet and method for making the same |
| WO2016069798A1 (en) | 2014-10-28 | 2016-05-06 | Bell Sports, Inc. | In-mold rotation helmet |
| US10376010B2 (en) * | 2015-11-04 | 2019-08-13 | Bell Sports, Inc. | Shock absorbing helmet |
| FR3044519B1 (en) * | 2015-12-04 | 2018-01-05 | Zedel | MULTI-MATERIAL PROTECTION HELMET |
| WO2018017867A1 (en) | 2016-07-20 | 2018-01-25 | Riddell, Inc. | System and methods for designing and manufacturing a bespoke protective sports helmet |
| WO2020037279A1 (en) | 2018-08-16 | 2020-02-20 | Riddell, Inc. | System and method for designing and manufacturing a protective helmet |
| US11167198B2 (en) | 2018-11-21 | 2021-11-09 | Riddell, Inc. | Football helmet with components additively manufactured to manage impact forces |
| USD927084S1 (en) | 2018-11-22 | 2021-08-03 | Riddell, Inc. | Pad member of an internal padding assembly of a protective sports helmet |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3239842A (en) * | 1964-04-07 | 1966-03-15 | Joseph Buegeleisen Company | Safety helmet |
| US4432099A (en) * | 1982-07-09 | 1984-02-21 | Gentex Corporation | Individually fitted helmet liner |
| CH666389A5 (en) * | 1985-04-19 | 1988-07-29 | Forstwirtschaftliche Zentralst | Safety helmet for forestry workers - consists of casing over both ears with hearing holes covered by slide pieces |
| DE3605849A1 (en) * | 1986-02-22 | 1987-08-27 | Lockweiler Arbeitsschutz Produ | Protective helmet for work |
| DE8707692U1 (en) * | 1987-05-29 | 1987-07-16 | Hans Voss KG, 3300 Braunschweig | Safety helmet, especially for forest workers |
| US5309576A (en) * | 1991-06-19 | 1994-05-10 | Bell Helmets Inc. | Multiple density helmet body compositions to strengthen helmet |
| CN2446805Y (en) * | 2000-10-27 | 2001-09-12 | 彭永华 | Protective mask with adjustable ear muffs |
| GB2387102B (en) * | 2002-04-04 | 2005-12-07 | Tunnard Mitchell | Modular helmet |
| US20070261153A1 (en) * | 2006-05-09 | 2007-11-15 | Wise Robert W | Protective helmet with flush pivoting ear cups |
-
2010
- 2010-12-17 CA CA2786243A patent/CA2786243A1/en not_active Abandoned
- 2010-12-17 AU AU2010339859A patent/AU2010339859A1/en not_active Abandoned
- 2010-12-17 WO PCT/US2010/060914 patent/WO2011084660A1/en active Application Filing
- 2010-12-17 CN CN201080064102XA patent/CN102762120A/en active Pending
- 2010-12-17 EP EP10801320A patent/EP2521465A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011084660A1 (en) | 2011-07-14 |
| CN102762120A (en) | 2012-10-31 |
| EP2521465A1 (en) | 2012-11-14 |
| AU2010339859A1 (en) | 2012-07-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |
Effective date: 20141217 |