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WO2009073645A1 - Ensemble de semelle pour un article de chaussure - Google Patents

Ensemble de semelle pour un article de chaussure Download PDF

Info

Publication number
WO2009073645A1
WO2009073645A1 PCT/US2008/085231 US2008085231W WO2009073645A1 WO 2009073645 A1 WO2009073645 A1 WO 2009073645A1 US 2008085231 W US2008085231 W US 2008085231W WO 2009073645 A1 WO2009073645 A1 WO 2009073645A1
Authority
WO
WIPO (PCT)
Prior art keywords
article
support element
shaped support
dome shaped
outsole
Prior art date
Application number
PCT/US2008/085231
Other languages
English (en)
Inventor
David Malek
Original Assignee
Genesco, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Genesco, Inc. filed Critical Genesco, Inc.
Publication of WO2009073645A1 publication Critical patent/WO2009073645A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A43B13/181—Resiliency achieved by the structure of the sole
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00—Heels; Top-pieces or top-lifts
    • A43B21/24—Heels; Top-pieces or top-lifts characterised by the constructive form
    • A43B21/26—Resilient heels
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
    • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
    • A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
    • A43B7/144—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the heel, i.e. the calcaneus bone

Definitions

  • the present invention relates generally to an article of footwear, and relates more specifically to a midsole assembly for an article of footwear.
  • shoes are generally comprised of an outsole, a midsole, an insole, and an upper.
  • the upper surrounds the foot or attaches the foot to the rest of the sole in the case of sandals.
  • the upper may completely cover the foot or only a portion of it.
  • the upper is often used to provide stability and ankle support.
  • When an article of footwear is worn the foot generally rests in the upper, on top of the insole.
  • the insole is a thin layer on top of the midsole that typically provides some cushioning and support for the foot in the footbed.
  • the midsole's primary function is to support the foot while the outsole is attached to the bottom, typically in order to provide traction.
  • Some shoes do not have a formal midsole but have an outsole attached to the bottom of the shoe which may have cushioning and support mechanisms.
  • a common goal of shoe design has been to provide a sole that provides both cushioning and stability to a shoe.
  • the entire sole is preferably durable and resistant to wear and tear.
  • FIG. 1 is a top view of a dome shaped support element according to certain embodiments of the invention.
  • FIG. 2 is a side view of the dome shaped support element according to certain embodiments of the invention.
  • FIG. 3 is an exploded side view of three of the components of the invention including the EVA cover, the dome shaped support element, and the outsole unit according to certain embodiments of the invention.
  • FIG. 4 is a bottom view of the dome shaped support element according to certain embodiments of the invention.
  • FIG. 5 is the side view of the assembled sole unit according to certain embodiments of the invention.
  • FIG. 6 is the bottom view of the assembled sole unit according to certain embodiments of the invention.
  • FIG. 7 is an exploded view of an assembled sole unit according to certain embodiments of the invention.
  • FIG. 8 is an exploded view of an assembled shoe unit according to certain embodiments of the invention.
  • Certain embodiments of the present invention solve the problems associated with traditional midsoles by providing a midsole with both support and cushioning in the heel region of the shoe.
  • the shoe combines a dome shaped support element and support plate to provide stability and a less stiff cushioning cover over the dome shaped support element to enhance the cushioning and comfort of the shoe.
  • Figures 1-8 depict the elements of certain embodiments of such a support and cushioning assembly as well as certain embodiments of complete shoe assemblies.
  • Certain embodiments of the invention provide an article of footwear with a viewing window in the outsole of the heel.
  • the viewing window may be round in shape and made of a durable, transparent material such as a thermoplastic polyurethane, thermoplastic elastomer, or any other suitable material as known to those skilled in the art.
  • the viewing window can be clear or tinted with any other color, preferably so as not to obstruct the ability to view the midsole through the viewing window. It is also not required that the viewing window be round, but can be of any shape that allows a dome shaped support element that rests above the window to be viewed through the outsole. It should be understood that certain embodiments of the invention may not require such a viewing window.
  • the viewing window in certain embodiments may be surrounded by the outsole which may be made of a durable material such as rubber.
  • This material can be used for the length of the outsole or the outsole can be made of a combination of durable materials.
  • the outsole can be a single layer or comprised of more than one layer of durable material such as rubber.
  • the outsole can be of constant or varying thickness from the heel portion of the outsole to the toe portion.
  • the outsole portion of the shoe located in the heel portion of the sole has a generally disc shaped section removed from the outsole material.
  • the removed section is above and adjacent to the viewing window but may be greater in diameter than the viewing window.
  • This removed section extends vertically from the top of the viewing window to the top of the outsole portion of the heel leaving a cavity in the outsole material.
  • This opening leaves a generally circular area for the dome shaped support element to be fitted into with a portion of the dome shaped support element in close proximity to or in contact with the outsole interior sidewalls.
  • the outsole interior sidewalls extend approximately perpendicular to the length of the outsole which extends from the heel to the toe of the shoe assembly.
  • the outsole interior sidewalls are created by the removed section of the outsole above the viewing window and are made of the same material as the outsole.
  • the outsole interior sidewalls can also be created by molding the outsole to include them.
  • the outsole interior sidewalls do not need to be generally circular but should be in a shape to accommodate the dome shaped support element.
  • the dome shaped support element in certain embodiments is made of a generally durable material such as Delrin® which is made by and trademarked by the E.I. DuPont de Nemours &Co.
  • Delrin® is made by and trademarked by the E.I. DuPont de Nemours &Co.
  • One form of Delrin® that may be used is an embodiment is Delrin lOOSTNCOlO®. Any material with similar characteristics could be substituted for this material.
  • the dome shaped support element in certain embodiments is generally circular at its base.
  • the dome shaped support element extends from a wider base to the apex of the dome creating a shape that approximates half of a sphere.
  • the base of the dome is located closer to the ground and outsole of the shoe while the apex is located near the heel of the wearer.
  • the dome shaped support element in certain embodiments is not a continuous surface but is comprised of a variety of generally triangular shaped legs forming the dome. These legs are spaced evenly around the dome and project from the apex of the dome towards the base. Between the legs are spaces which create separation between the legs.
  • the separations between the legs project approximately 7/8ths of the way from the base of the dome towards the to the apex of the dome.
  • the height of the separations from the base towards the apex may vary.
  • the height of the dome shaped support element may vary based on the height of the heel of the shoe. Preferably the height of the dome is more than half of the height of the heel of the shoe. However, any height that is sufficient to provide the benefits of this advanced cushioning system is acceptable.
  • feet at the base of the dome shaped support element legs may be molded with the dome shaped support element and are used to fit the dome shaped support element into the generally circular portion of the outsole that has been removed and placed adjacent to the outsole interior sidewalls.
  • these feet may be of a certain length to fit the dome shaped support element snuggly into the space touching the outsole interior sidewalls when in a relaxed state. They also may be of a shorter length allowing the feet to come in contact with the outsole interior side walls only when the dome shaped support element is compressed.
  • the dome shaped support element is fitted into the outsole with the feet of the dome shaped support element in close proximity to or contact with the outsole interior sidewalls. Upon the dome shaped support element being compressed, the heel dome feet come in contact with the outsole interior sidewalls. These sidewalls are a part of the outsole and comprised of the same stiff material. When the feet of the dome shaped support element come into contact with the outsole interior sidewalls, the dome shaped support element becomes more stiff to prevent over-compression of the heel of the article of footwear.
  • a cushioning cover which may be made of Ethylene Vinyl acetate ("EVA”), Thermoplastic Elastomer gel, or Polyurethene. Any other material that one of ordinary skill in the art would recognize to have similar properties could be substituted.
  • EVA Ethylene Vinyl acetate
  • the cushioning cover include a cover made of EVA that has a dome like shape which fits over the dome shaped support element and the feet of the dome shaped support element.
  • the cushioning cover of certain embodiments is of a lesser thickness than the dome shaped support element.
  • a cushioning cover that is generally rectangular which may or may not have vents in the cushioning cover near the foot that extend over the dome shaped support element. These vents can take any form that one of ordinary skill in the art would know to use as vents.
  • resting on and covering a portion of the cushioning cover is a heel plate.
  • This heel plate may have an opening to allow the portions of the cushioning cover with vents to protrude through the heel plate towards the wearer's heel. This opening is not required and the heel plate may be one continuous plate.
  • the heel plate is made of a durable and generally stiff material such as tuck board. The heel plate can be used to add firmness to the sole assembly mechanism. An insole may be placed on top of the heel plate for additional firmness or cushioning.
  • Figure 1 depicts the upward projecting surface of the dome shaped support element according to certain embodiments of the present invention.
  • the dome shaped support element can have a pattern inscribed on it or molded into it as depicted in Figure 1 or a smooth texture on its top surface if desired.
  • the dome is generally circular and has a number of legs 102 extending from an apex 101 of the dome shaped support element.
  • the preferred shape of the legs is generally triangular as depicted, although other shapes may be appropriate.
  • the dome apex 101 projects towards the heel of the wearer and the legs 102 project downwards towards the outsole and the ground.
  • the dome shaped support elements also have spaces 104 that extend between the legs 102 in certain embodiments of the invention.
  • the height of the dome shaped support element is preferably determined based on the height of the heel of the shoe.
  • the preferred height is typically more than half of the height of the heel of the shoe although any height that is sufficient to provide enhanced cushioning properties from traditional shoe soles is acceptable.
  • Those skilled in the art may find it desirable to insert a formal midsole adjacent to the dome, which would influence the height of the dome.
  • Figure 2 depicts a side view of the dome shaped support element with the apex 101 and legs 102.
  • the legs may also have small feet 203 extending outwardly from the center of the dome 101. These feet 203 are used to position the dome shaped support element in the shoe and may expand the diameter of the dome shaped support element when the heel is compressed.
  • Between the legs 102 are spaces 104.
  • the spaces 104 allow the dome shaped support element to flex as needed to provide support and cushioning.
  • the spaces 104 in the dome shaped support element extend generally at least half of the height of the dome shaped support element from the bottom of the heel towards the apex of the dome shaped support element.
  • Figure 3 depicts the outsole and heel assembly from the side.
  • the outsole unit 301 can be attached to an insole and upper to form a variety of shoe types including loafers, dress shoes, and boots.
  • the forefoot and midfoot of the shoe 302 extends from the toes towards the heel region 304.
  • the heel region 304 is where the dome shaped support element 305 is situated with the apex 101 projecting towards the wearer's heel when the shoe is in use and the legs 102 projecting downwards towards the ground.
  • the dome shaped support element in certain embodiments has feet 203 which may be used to secure the dome shaped support element into the midsole. Those feet may come into contact with the interior sidewalls 306.
  • the feet 203 may or may not be in contact with the interior sidewalls 306 when the shoe is not under compression.
  • the viewing window 303 provides a viewing area into the heel region 304 to view the dome shaped support element.
  • This window 303 can be a clear or shaded Thermoplastic Elastomer ("TPE") or can be made from Thermoplastic Polyurethane.
  • Figure 4 depicts the bottom of the dome shaped support element.
  • the dome shaped support element in Figure 4 can have a pattern inscribed or molded into it as shown or can be smooth in texture. In addition, a logo or picture can be inscribed for viewing through the window 303.
  • the dome shaped support element 305 has a cover 308 located on top of the dome shaped support element 305 preferably comprised of Ethylene Vinyl Acetate (“EVA”) or other suitable material.
  • EVA Ethylene Vinyl Acetate
  • PU Polyurethane
  • This material provides additional cushioning properties to the dome shaped support element and also may be used to secure the dome shaped support element in its location.
  • the cover 308 may be a less viscous material that is encapsulated or a thicker material that is not encapsulated. A non-encapsulated gel is preferable since it has less opportunity for rupture or breakage.
  • the cover 308 is located on top of the dome shaped support element 305 inside of the heel 304 of the shoe.
  • the cover 308 can take a variety of shapes including a shape similar to the dome shaped support element or any other shape.
  • Certain embodiments of the outsole and heel assembly are depicted in Figure 5.
  • the dome shaped support element 305 is located on top of the viewing window 303.
  • a substance such as a liquid, gel, or compressed air may be placed inside the dome 507 to provide additional support.
  • the feet 203 of the dome fit within the heel section and may be used to secure the dome shaped support element in place in conjunction with the cover 308 and viewing window 303.
  • the viewing window may be composed of thermoplastic elastomer or thermoplastic polyurethane.
  • the dome shaped support element 305 is covered with the cushioning cover 308 as described above.
  • There is space surrounding the dome in the heel 506 may be filled with a gas, soft solid material, aqueous solution, or gel.
  • the dome cover could also be molded to fill the space 506.
  • This plate can be composed of fiberglass, Kevlar®, thermoplastic rubber, or any other material that would be recognized by one of ordinary skill in the art to be a suitable material.
  • An example of a suitable material is Acrylonitrile Butadiene Styrene ("ABS”) plastic.
  • the dome shaped support element 305 in the heel portion is not inflexible. While the material comprising the dome shaped support element 305 has similar properties to Delrin®, when pressure is applied such as standing or walking, the dome shaped support element 305 structure can expand the footprint of the dome structure in order to cushion the foot. The cover 308 would expand in turn with the expansion of the dome shaped support element 305 and provide additional cushioning properties to the impact.
  • the heel plate, 504 distributes the compression evenly on the dome shaped support element and provides additional stability to the assembly.
  • the heel plate 504 may be solid or alternatively have an opening to allow the cover 308 to support the foot more directly under the insole.
  • Figure 6 depicts the bottom view of the assembled shoe bottom.
  • the viewing window allows an individual to see the bottom of the dome as depicted in Figure 4.
  • Figure 7 depicts certain embodiments of the bottom assembly 701 of the shoe.
  • the dome shaped support element 305 is fitted on top of viewing window 303.
  • Thermoplastic Elastomer gel insert 308 is placed on top of the dome to secure the dome.
  • a heel plate 504 is placed on top of the gel insert and may be solid or have an opening as shown in Figure 7.
  • the heel plate may be composed of tuck board.
  • An insole 706 is then inserted on top of the bottom assembly.
  • Figure 8 depicts certain embodiments of a completed article of footwear incorporating certain embodiments of the invention claimed herein.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

La présente invention concerne un article de chaussure comprenant une empeigne s'étendant autour d'au moins une partie du pied. La semelle d'usure est fixée à l'empeigne. L'article de chaussure comprend une semelle intercalaire fixée de façon amovible à la semelle d'usure. Cette semelle intercalaire comporte un élément de support (305) ayant la forme générale d'un dôme et en saillie verticalement, situé dans la partie talon de la semelle intercalaire. L'élément de support en forme de dôme peut être en contact avec les parois intérieures de la semelle d'usure uniquement pendant qu'il est dans un état comprimé, ou alors il peut rester en contact avec les parois intérieures dans un état non comprimé. L'élément de support en forme de dôme (305) est au moins partiellement couvert par une couverture d'amortissement (308) constituée d'un matériau moins rigide que le matériau comprenant l'élément de support en forme de dôme. La couverture d'amortissement peut être partiellement couverte par une plaque de talon (504) s'étendant depuis le talon de la chaussure vers le bout de la chaussure. La plaque de talon peut s'étendre ou non sur la totalité de la longueur de la chaussure.
PCT/US2008/085231 2007-12-03 2008-12-02 Ensemble de semelle pour un article de chaussure WO2009073645A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US99199607P 2007-12-03 2007-12-03
US60/991,996 2007-12-03
US99224507P 2007-12-04 2007-12-04
US60/992,245 2007-12-04

Publications (1)

Publication Number Publication Date
WO2009073645A1 true WO2009073645A1 (fr) 2009-06-11

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Family Applications (1)

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PCT/US2008/085231 WO2009073645A1 (fr) 2007-12-03 2008-12-02 Ensemble de semelle pour un article de chaussure

Country Status (2)

Country Link
US (1) US20090139114A1 (fr)
WO (1) WO2009073645A1 (fr)

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