JP4927810B2 - Reservoir with refill inlet for handheld spray gun - Google Patents

Abstract

A paint reservoir has a fluid outlet (115) connectable to a spray gun (101) and a fluid inlet (131) provided with a removable screw cap (132) whereby the fluid inlet (131) is directly accessible for introducing paint to the reservoir while attached to the spray gun (101). The fluid outlet (115) and fluid inlet (131) may both be provided in an end wall of the reservoir with outlet (115) located on the longitudinal axis of the reservoir or offset to allow the size of the fluid inlet (131) to be increased for easier filling of the reservoir. The outlet (115) can be aligned with the longitudinal axis of the reservoir or it can be inclined relative to the longitudinal axis to provide greater clearance for access to the fluid inlet (131) when the reservoir is attached to the spray gun (101).

Description

  The present invention relates to an improvement of a liquid spraying apparatus, or an improvement related thereto. The present invention is particularly applicable to, but is not limited to, a handheld spray gun with a liquid reservoir for spraying onto a substrate.

  Spray guns are widely used in body repair shops when spraying vehicles that have been repaired after an accident. In known spray guns, the liquid is contained in a reservoir attached to the gun, from which the liquid is supplied to the spray nozzle. As it emerges from the spray nozzle, the liquid is atomized and forms a spray with compressed air supplied to the nozzle. Liquid is pressured by gravity supply, suction supply, or more recently, bleed from a source of compressed air into the reservoir.

  A typical paint finish requires the application of a primer, base coat, and top coat. The spray gun and reservoir need to be thoroughly cleaned when changing the liquid in the paint pot to prevent cross-contamination that may adversely affect the finish. This is particularly important when spraying on a part of a vehicle to exactly match the existing color shade of an adjacent body structure.

  Cleaning the spray gun and reservoir is time consuming and often requires the use of solvents that can be costly and can impair worker health. In order to reduce the amount of cleaning and facilitate the switch from one liquid to another, we have previously disclosed in US Pat. An arrangement to be accommodated in the reservoir was proposed.

  In one configuration, the reservoir comprises an open container that fits the paint pot and a separate lid having an outlet that closes the open end of the container and connects to the spray gun. In use, as the liquid is withdrawn, the container is folded, and after spraying, the container can be removed from the paint pot with the lid attached and discarded. The paint pot is then equipped with a new clean container for the different liquid to be applied as the next coat. As a result, the amount of clean required is greatly reduced and the spray gun can be easily configured to apply various liquids in a simpler manner.

WO 98/32539 U.S. Pat. No. A-5,582,350

  In this arrangement, if it is desired to replenish the reservoir with more liquid, the reservoir must be separated from the spray gun and the lid removed. For example, when painting large areas, such as when using a primer or lacquer finish, or applying several coats of the same liquid to the same or different vehicles. This is time consuming and can be cumbersome if liquid spills. Also, separating the reservoir from the spray gun and removing the lid to add more liquid to the reservoir increases the risk of contamination due to other sources, such as dust or dust. Although unwanted solid particles can be removed by the intervening filter, this may become clogged and will not prevent the finish shade from being adversely affected by any contaminants absorbed into the liquid.

  Another arrangement for lining the paint pot to reduce the amount of cleaning is disclosed in US Pat. In this arrangement, the paint is contained in a foldable bag in the paint pot and connected to the spray gun via the outlet at one end of the pot. The other end of the pot is closed by a removable lid to provide access to the bags in the pot. The bag has a zipper closure that can be resealed, with which paint can be added to the bag. The bag is connected to the outlet when it is initially empty. The paint is then poured into the bag and the bag is sealed before attaching the lid and closing the pot. When spraying is complete, the bag can be removed for disposal and replaced with a new clean bag. In this arrangement, there is a risk of spilling if the bag is full before the zipper closure is tightened. Furthermore, if it is necessary to add paint to the bag in use, access to the zipper closure is only possible if the lid is removed and the pot is opened. Also, a folded or partially folded bag needs to be unfolded before opening the zipper closure and adding paint, and the bag is removed from the outlet. As a result, if the bag is removed at the completion of spraying, paint may leak from the bag and the pot may need to be cleaned. Thus, this arrangement is usually suitable for single use, where the bag is filled once at the initial preparation of the spray gun and is not intended to be refilled.

  The present invention aims to further improve our existing systems and provides further benefits and advantages to manufacturers and / or users.

  More specifically, the present invention provides an apparatus for spraying liquid contained in a reservoir, where the liquid can be added to the reservoir without separating the reservoir from the apparatus.

  Furthermore, the present invention provides a foldable reservoir that connects to a spraying device that can be supplied empty or pre-filled with liquid.

  The present invention also provides a foldable reservoir for use with the device that can be replenished in a simple manner while attached to the spray device and discarded after use to reduce the amount of clean required. provide.

  Other objects, benefits and advantages of the present invention are mentioned later in this specification.

  According to a first aspect of the present invention there is provided an apparatus such as a spray gun for spraying liquid comprising a collapsible reservoir for sprayed liquid and a spray nozzle for dispensing liquid supplied from the reservoir, wherein the reservoir is A fluid outlet connectable to the device and a fluid inlet for adding liquid to the reservoir, the fluid inlet having a removable closure that opens and closes the fluid inlet, and the reservoir is connected to the device; The closure is directly accessible.

  By providing a separate fluid inlet with a removable closure that is directly accessible when the reservoir is connected to the device, liquid can be added to the reservoir without removing the reservoir from the device. This is particularly advantageous when the reservoir capacity is less than the amount of paint required to paint a given area. Thus, when painting a large area, the user can simply fill the reservoir with additional paint as needed while leaving the reservoir attached to the device. As a result, the risk of paint spillage and / or contamination is reduced. It is also advantageous when applying clear paints such as lacquers, where it is fairly easy to add solvents to the reservoir to reduce the viscosity of the clear paint for “fade out or blending”. become.

  The reservoir is advantageously configured such that the connection to the device is removable. For example, the reservoir and device are provided with a cooperating structure that removably secures the reservoir. The cooperating structure can engage with a push / twist actuating mechanism, such as a bayonet structure. In this manner, the reservoir is connected to and removed from the device gun in a simple manner that requires minimal effort or manual dexterity by the user.

  The reservoir comprises a foldable portion for the liquid supplied to the device and a mounting portion with a fluid outlet connecting the reservoir to the device. For example, the foldable portion comprises a flexible container for liquid, and the attachment portion comprises a lid configured to close the container opening. The container and lid are preferably disposable and can be discarded after use.

  In one arrangement, a fluid outlet and fluid inlet are provided in the lid at one end of the reservoir, and the fluid inlet is configured and arranged to be accessible when the reservoir is coupled to the device via the fluid outlet. In this way, installation of the fluid inlet does not prevent the reservoir from folding when liquid is being drawn. Furthermore, by providing a fluid inlet and a fluid outlet at the end of the reservoir, the device can be configured to position the fluid inlet so that the reservoir can be almost completely filled. Also, having a fluid inlet in the lid inserts a stick or other tool that stirs the liquid in the reservoir, thereby allowing the added liquid and any liquid remaining in the reservoir to continue spraying. It is possible to ensure sufficient mixing. Shaking is also possible to ensure sufficient mixing.

  Although the fluid outlet is located on the central longitudinal axis of the reservoir, it is more preferred that the fluid outlet is offset to one side of the central longitudinal axis. The offset arrangement provides more room for receiving the fluid inlet and can increase the fluid inlet. In this way, filling the reservoir through the fluid inlet is easy with little risk of spilling, and the liquid can be filtered when a removable filter is positioned in the fluid inlet and the liquid is introduced. . As a result, it is not possible to provide a filter in the reservoir to filter the liquid as it is withdrawn from the reservoir through the fluid outlet, thereby reducing the risk that the liquid flow will be limited by blockage during spraying. It is unnecessary. The fluid inlet is received inside the periphery of the lid or it extends outward beyond the periphery.

  The fluid outlet extends parallel to the longitudinal axis of the reservoir, but more preferably the fluid outlet is tilted with respect to the longitudinal axis. Tilting the fluid outlet provides a larger gap between the device and the fluid inlet so that access to the fluid inlet is improved when a reservoir is attached to the device.

  The lid is separate from the flexible container and the means provided to secure the lid to close the container opening. In one arrangement, the flexible container fits and provides a lining for the outer pot, and the lid is removably secured to the container by engagement of the locking collar with the outer pot. In this way, the outer pot supports the flexible container and increases the stability of the reservoir when connected to the device. Also, after use, the flexible container and lid are discarded and the outer pot is retained for assembly with a new clean flexible container and lid. As a result, the amount of clean required is reduced.

  In another arrangement, the lid and flexible container are joined together by adhesive, welding, or the like. Alternatively or additionally, the lid and flexible container are mechanically secured to each other, such as by engagement of an interlocking structure. In this way, the reservoir is supplied empty for filling by the user through the fluid inlet, or it is pre-filled with liquid and ready for the user to attach to the device. A cage, or other form of external support, is provided for the flexible container to improve reservoir stability when attached to the device.

  When the reservoir is supplied empty, it is folded into a compact shape for storage and transport. Pre-filling is used for liquids that can be packaged and stored without degradation until needed. Thus, pre-filling is particularly useful for liquids that can be supplied ready for use (ie, without requiring changes to match the color to an existing color). Specified shading standards that are supplied in a non-activated state and can be activated (if necessary) by suitable means, such as by exposure to (ultraviolet) light sources or, if necessary, by electrical energy Color primer and / or primer or lacquer. Whatever arrangement is used, the reservoir can be refilled during use without being separated from the device by use of a fluid inlet.

  In yet another arrangement, the lid has an end wall and a side wall extending from the end wall, the side wall being removably or permanently removable from the lid as described above. Configured to concatenate. In this arrangement, the fluid outlet is provided on the end wall and the fluid inlet is provided on the side wall. In this way, access to the fluid inlet is improved and the inlet does not prevent the flexible container from folding during use of the reservoir. A set of lids with different length side walls is provided for assembly with a common flexible container, whereby different volume reservoirs are formed by the selection of an appropriate lid.

  In yet another arrangement, the reservoir includes a sleeve that extends between and connects the lid and the flexible container. In this arrangement, the fluid outlet is provided in the lid at the end of the reservoir and the fluid inlet is provided in the sleeve. A set of sleeves of different lengths are provided for assembly with a common flexible container and lid so that the volume of the reservoir is altered by the selection of an appropriate sleeve. Also, if a fluid inlet is not required, the reservoir is assembled without a sleeve. Alternatively, the lid is provided with a fluid inlet as described above.

  When filling the reservoir, the liquid is filtered to remove unwanted solid particles. Alternatively, the reservoir includes a filter that removes unwanted solid particles from the liquid supplied to the device through the fluid outlet. Where a filter is provided in the reservoir, the fluid inlet is configured to introduce liquid into the reservoir opposite the filter relative to the fluid outlet. In this way, fluid added to the reservoir through the fluid inlet needs to pass through the filter before reaching the fluid outlet. As a result, unwanted solid particles or contaminants introduced with the liquid added to the reservoir are retained in the reservoir and discarded with the container and lid.

  The fluid inlet preferably comprises an opening that is closed by a removable closure, such as a screw cap. An opening is provided in a tubular spout portion extending from the reservoir, and a screw cap is removably attached thereto. In this way, the screw cap is turned loose to open the fluid inlet and the cap is reattached to close the inlet to remove the reservoir from the device so that liquid can be added to the reservoir if necessary. Can continue spraying without.

  In accordance with another aspect of the present invention, there is provided a spray gun for spraying a material such as paint comprising a spray nozzle for spraying liquid and a foldable reservoir for liquid, the reservoir being removably coupled to the spray gun. Fluid outlet, so that the reservoir can be separated and discarded after use, and the reservoir can also be directly accessed to add liquid to the reservoir when the reservoir is attached to the gun Having a fluid inlet configured as described above.

  The spray gun is a gravity supply type or a pressure supply type.

  According to another aspect of the present invention, a reservoir is provided for supplying liquid to a spray gun or the like, the reservoir having a fluid outlet and a separate fluid inlet such that the reservoir is removably coupled to the spray gun. Configured so that the fluid inlet is directly accessible to introduce liquid into the reservoir while attached to the spray gun, where the reservoir is collapsible if the liquid is withdrawn from the reservoir during use of the spray gun. is there.

  The reservoir is pre-filled with the liquid to be sprayed and the fluid inlet allows the liquid to be added to the reservoir in use without separating the reservoir from the spray gun. Alternatively, the reservoir is supplied empty so that the user can fill the liquid of his own choice.

  According to yet another aspect of the present invention, a reservoir is provided for attachment to a spray gun, the reservoir having a fluid outlet for supplying liquid to the spray gun and a separate fluid inlet for introducing liquid into the reservoir. The fluid outlet is formed in the end wall of the reservoir and the fluid inlet is formed in the side wall of the reservoir so that it can be accessed when attached to the spray gun.

  The end wall is a reservoir lid and the sidewall is a skirt that is integral with the lid or a separate sleeve connected to the lid so that the fluid inlet is directly accessible when the reservoir is connected to the spray gun. The side walls preferably extend between and connect the end walls and a flexible container for the liquid that is foldable when the liquid is withdrawn from the reservoir in use. In this way, the fluid inlet does not prevent the container from being folded during use.

  According to yet another aspect of the invention, a reservoir is provided for attachment to a spray gun, the reservoir having a fluid outlet for supplying liquid to the spray gun and a separate fluid inlet for introducing liquid to the reservoir, the fluid outlet being The fluid outlet is formed in the end wall of the reservoir and the fluid inlet is formed in the end wall offset from the fluid outlet so that it can be accessed when attached to the spray gun.

  Although the fluid outlet is located on the central longitudinal axis of the reservoir, it is more preferred that the fluid outlet is offset to one side of the longitudinal axis. The offset arrangement provides more room to accept a fluid inlet that can be made larger to facilitate filling the reservoir through the fluid inlet.

  The fluid outlet extends parallel to the longitudinal axis of the reservoir, but more preferably the fluid outlet is tilted with respect to the longitudinal axis. The angular arrangement increases the clearance between the spray gun and the fluid inlet, thereby making it easier to fill the reservoir through the inlet to the fluid inlet when the reservoir is attached to the spray gun. Improve access.

  The fluid inlet is preferably directly accessible when the reservoir is connected to a spray gun. The reservoir preferably includes a collapsible container for liquid and the end wall is provided by a lid configured to close the open end of the container.

  According to yet another aspect of the invention, a reservoir is provided for attachment to a spray gun, the reservoir having a liquid container and a lid for closing the container, the lid being a fluid outlet connectable to the spray gun, and a container And a volume adapter between the lid and the lid.

  The volume adapter is an integral part of the lid, for example a dependent skirt, or it is separate from the lid and the container, for example a sleeve inserted between the lid and the container. In this way, the same container can be configured to provide a reservoir having any desired volume by selection and attachment of an appropriate adapter.

  The adapter includes a fluid inlet for adding liquid to the reservoir while attached to the spray gun. For example, a removable closure for the fluid inlet is provided on the adapter.

  The invention will now be described in more detail by way of example only with reference to the accompanying drawings.

1 is a perspective view of a prior art spray gun. FIG. FIG. 3 is an exploded isometric view of the components of the paint reservoir shown in FIG. 1. FIG. 3 is a perspective view of the paint reservoir assembly shown in FIG. 2. It is sectional drawing of the longitudinal direction of the coating material reservoir | reserver shown in FIG. FIG. 4 shows the separation of the components of the paint reservoir of FIG. 3 after use. FIG. 6 is a perspective view of an adapter connecting a paint reservoir to a spray gun. It is sectional drawing of the longitudinal direction of the adapter shown in FIG. FIG. 3 is an exploded isometric view similar to FIG. 2 showing the components of the paint reservoir according to the first embodiment of the present invention. FIG. 9 is a perspective view similar to FIG. 3 showing the paint reservoir assembly of FIG. 8. FIG. 10 is a longitudinal sectional view of the paint reservoir of FIG. 9. FIG. 11 is a perspective view of the reservoir of FIGS. 8-10 attached to the spray gun of FIG. 1, with the spray gun shown upside down and the closure cap removed to add paint to the reservoir. FIG. 12 is a perspective view of the spray gun shown in FIG. 11 with the top and bottom restored and ready for use. FIG. 13 is a longitudinal cross-sectional view of an alternative lid and filter for the reservoir shown in FIGS. FIG. 13 is a longitudinal cross-sectional view showing an alternate location of the fluid inlet and closure cap for the reservoir shown in FIGS. FIG. 13 is a longitudinal cross-sectional view showing yet another position of the fluid inlet and closure cap for the reservoir shown in FIGS. It is a perspective view of a paint reservoir according to a second embodiment of the present invention. FIG. 17 shows the paint reservoir of FIG. 16 in a folded state. FIG. 17 shows a variation of the paint reservoir shown in FIG. 16 including a support basket. FIG. 17 shows an alternative support basket for the paint reservoir shown in FIG. 16. It is a figure which shows the change aspect of the coating material reservoir | reserver shown in FIG. It is sectional drawing of the longitudinal direction of the coating material reservoir by 3rd Embodiment of this invention. FIG. 22 is a perspective view of the paint reservoir of FIG. 21 with the closure cap removed. FIG. 22 is a plan view of the paint reservoir of FIG. 21. FIG. 24 is a perspective view of the paint reservoir of FIGS. 21-23 connected to the spray gun of FIG. 1, with the spray gun shown upside down and the closure cap removed to add paint to the reservoir. FIG. 22 is a longitudinal cross-sectional view of an alternative lid for the paint reservoir shown in FIG. FIG. 26 is a perspective view of the lid shown in FIG. 25 with the closure cap removed. It is a top view of the lid | cover shown in FIG. It is sectional drawing of the longitudinal direction of the coating material reservoir by 4th Embodiment of this invention. It is sectional drawing of the longitudinal direction of the cover of the coating material reservoir shown in FIG. FIG. 29 is a perspective view of the paint reservoir shown in FIG. 28. FIG. 30 is a perspective view showing the lid of FIG. 29 attached to a spray gun to form a reservoir for paint. It is sectional drawing of the longitudinal direction which shows the change aspect of the coating material reservoir | reserver of FIG. FIG. 33 is a perspective view of the paint reservoir shown in FIG. 32. FIG. 34 is a perspective view similar to FIG. 33 showing an alternative arrangement for the fluid inlet.

  FIG. 1 of the drawings is an illustration of the gravity-fed prior art disclosed in our co-pending application, published as US Pat. A paint spray gun 1 is shown.

  The gun 1 includes a main body 2, a handle 3 extending downward from the rear end of the main body, and a spray nozzle 4 at the front end of the main body. The gun 1 is manually operated by a trigger 5 pivoted on both sides of the gun.

  A paint reservoir 6 containing paint (or similar material) released by the gun is located at the top of the body 2 and communicates with an internal passage (not visible) that extends through the gun to the nozzle 4.

  In use, the gun 1 is connected to a compressed air source (not shown) by a connector 7 at the lower end of the handle 3 so that when the user pulls the trigger 5, compressed air is supplied to the nozzle 4 through the gun. The As a result, the paint supplied to the nozzle 4 from the paint pot 6 under gravity is atomized when leaving the nozzle 4 and forms a spray with the compressed air coming out of the nozzle 4.

  2 to 4 of the drawings, the paint pot 6 includes an outer container 8, a disposable inner container 9, a disposable lid 10, and a collar 11. The inner container 9 has a narrow peripheral edge 12 on the upper edge of the container 8 at the open end.

  The lid 10 has a subordinate skirt 13 that is pushed into the open end of the inner container 9 and a central hole 14 through which a connecting pipe 15 that forms a fluid outlet extends. The tube 15 is provided at its free end with an outer extension 16 which forms part of the bayonet connection. The hole 14 is pushed into the hole 14 or covered by a filter mesh 17 that is an integral part of the lid 10.

  The skirt 13 is fitted on the outer edge of the lid 10, and the peripheral edge 12 of the inner container 9 is confined between the end of the outer container 8 and the outer edge of the lid 10. The lid 10 is firmly held in place on the container 8 by an annular collar 11 that is screwed into the container 8 at the top of the lid 10. In the assembled state, the inner container 9 and the lid 10 form a reservoir containing paint or other liquid that is supplied to the nozzle 4 through the connecting tube 15.

  The paint pot 6 is attached to the spray gun 1 by using an adapter 18 shown separately from the paint pot 6 in FIG. The adapter 18 is a tubular part formed inside at one end 19 together with the other part of the insertion connecting portion attached to the connecting tube 15 of the lid 10. At the other end 20, the adapter 18 is shaped to fit a standard attachment (typically a thread) of the spray gun paint pot.

  The container 8 of the paint pot 6 is made of a plastic material, such as polyethylene or polypropylene, is translucent (as shown in FIG. 2) or opaque and is of any suitable size. When used with a paint spray gun, a container 8 having a capacity of 250, 500 or 800 ml may normally be used, although other sizes may be used as required.

  In this embodiment, the container 8 has a substantially cylindrical shape closed at one end 8A. The other end is open and a side wall 8B is formed with an external thread 8C. The bottom surface 8A is flat and formed with a central air hole 8D so that the container 8 can stand on a plane. Inside, the side wall 8B tapers slightly inwardly from the open end to the bottom surface 8A.

  The inner container 9 is preferably transparent and is thermoformed from a single piece of plastic material, preferably polyethylene or polypropylene. The shape of the inner container 9 is defined by and matches the inner shape of the container 8. The inner container 9 is similar to the inside of the container 8 and has a substantially cylindrical shape closed at one end 9A, and the side wall 9B tapers slightly inward from the mouth toward the closed end 9A.

  The peripheral portion 12 and the bottom or closed end 9A are relatively stiff, but the side wall 9B is flexible and can be made foldable. Nevertheless, the inner container 9 can stand on its bottom surface 9A when the side wall 9B is extended as shown in FIGS.

  When the inner container 9 is folded, as shown in FIG. 5, the relatively stiff bottom surface 9A retains its shape but moves toward the peripheral portion 12 as a result of the folding of the side wall 9B. The side wall 9B folds in the same way as a plastic bag without breaking (eg, by breaking, tearing or cracking).

  In one form, the inner container 9 has a height of about 110 mm, a diameter of its bottom surface 9A of about 78 mm, and a diameter of its mouth (excluding the peripheral portion 12) of about 86 mm. The bottom surface 9A has a thickness of about 400 μm, the peripheral portion 12 has a thickness of about 900 μm, and the side wall 9B has a thickness of about 150 μm.

  In another form, the inner container 9 has the same height and its bottom surface 9A and the same diameter of the mouth, but the bottom surface 9A has a thickness of about 300 μm and the peripheral portion 12 has a thickness of about 200 μm. The side wall 9B has a thickness in the range of 50 to 250 μm.

  The lid 10 is also formed from a plastic material, such as polyethylene or polypropylene, and is formed by an injection molding process. The lid 10 is translucent or opaque and is colored. The collar 11 is a molded plastic part or it is a cutting metal (eg aluminum) part. The adapter 18 is a metal or plastic part, for example, formed from aluminum and anodized or plated.

  In order to use the paint pot 6, the adapter 18 is attached to the spray gun at the end 20 and left in place. Next, with respect to the paint pot 6 disassembled as shown in FIG. 2, the inner container 9 is pushed into the outer container 8. The paint is then placed in the inner container 9 and mixed with other pigments, curing agents, and thinner (solvent) as required. Then, the lid 10 is pushed into a predetermined position, and the collar 11 is firmly screwed downward to hold the lid 10 in a predetermined position.

  Then, the upper part of the inner container 9 is confined between the skirt 13 of the lid 10 and the side wall 8B of the container 8, and the peripheral edge 12 of the inner container 9 is formed with the upper edge of the container 8 and the collar 11 as shown in FIG. Trapped in between.

  The spray gun 1 is then reversed from its normal operating position shown in FIG. The end of the connecting tube 15 can then be attached to the adapter 18 by a simple push and twist actuation mechanism without spilling the paint contained in the reservoir and engage the cooperating plug structure. The spray gun 1 can then be returned to its normal operating position for use in the normal manner.

  As the paint is removed from within the inner container 9, the side surface 9B of the inner container 9 is folded as a result of the pressure within the inner container 9 decreasing. The bottom surface 9A of the stiffer inner container 9 retains its shape so that the inner container 9 is more likely to fold in the longitudinal direction than in the lateral direction, thereby reducing the likelihood that a clump of paint will be trapped within the inner container 9. .

  Although not essential, the user can choose to evacuate the air from the inner container 9 before operating the spray gun 1. However, since there is no risk of air entering the spray gun 1 from the paint pot 6, it increases the range of angles that the spray gun 1 will function satisfactorily. In order to evacuate the air from the inner container 9, the trigger 5 of the spray gun 1 needs to be driven while the spray gun 1 is still in the reverse position.

  If the spray gun 1 is cleaned after use, the spray gun 1 can be reversed again from its operating position shown in FIG. The air line is removed and the trigger 5 is driven short to allow the paint in the spray gun 1 to return into the internal container 9 in the pot 6. The pot 6 is then removed from the spray gun 1 by separating the plug-in structure and removing the connecting tube 15 from the adapter 18 that remains attached to the spray gun 1.

  As will be appreciated, the plug-in structure allows the pot 6 to be quickly connected to and removed from the spray gun 1 with a simple push-twist actuation mechanism that requires less manual dexterity than a screw connection. It provides a linkage system that makes it possible to However, it will be appreciated that other types of connection systems may be used to removably connect the pot 6 to the spray gun 1.

  The collar 11 is removed from the outer container 8 and then the lid 10 is withdrawn, with it pulling out the folded inner container 9 as shown in FIG. Lid 10 (including filter 17) and inner container 9 are discarded, leaving outer container 8 and collar 11 clean and ready to be reused with new inner container 9 and lid 10. Since only the spray gun 1 itself needs to be cleaned, the result is a considerable reduction in the amount of solvent used.

  Since the inner container 9 is removed and discarded in a somewhat folded state with the lid 10 in place, the risk of spilling unused paint from the pot 6 is also considerably reduced. Furthermore, since the inner container 9 is discarded in a folded state, the size of the space required for collecting the used inner container 9 is minimized.

  As described above, since the inner container 9 fits inside the outer container 8 and has a smooth inner surface, the paint can be mixed in the inner container 9 in the outer container 8 instead of in a separate container. is there. As such, cleaning of a separate mixing vessel can also be omitted, thus achieving a further reduction in solvent usage.

  The overall shape of the outer container 8, and specifically the fact that it is flat and stable when it is oriented as shown in FIG. 2, makes it an inner container 9 supported in the container 8. Making it particularly suitable for mixing paints within.

  The possibility that the inner container 9 is punctured or damaged by the mixing tool is minimized. This is because, firstly, the inner container 9 fits snugly inside the outer container 8, and secondly, the self-supporting nature of the inner container 9 makes it pull around in the outer container 8 during the mixing process. This means that the possibility of being reduced is reduced.

  In order to facilitate use of the inner container 9 as a mixing container, the outer container 8 is transparent, and a mark 21 (FIG. 2) indicating the volume of the contents of the inner container 9 is provided on the side wall 8B. Alternatively, if the outer container 8 is opaque, it adds an elongated hole in the side wall 8B that allows the user of the spray gun 1 to look into the inner container 9 so that the amount of paint in the pot 6 can be calculated at any time. May be formed.

  When the paint is mixed in the inner container 9, including the filter mesh 17 in the lid 10 prevents unwanted particles in the paint from entering the spray gun 1. However, if the paint is rough, or if it is mixed in a separate container and filtered when it is transferred to the inner container 9, or if the presence of contaminants in the paint is not important, the mesh 17 Can be omitted.

  As will be apparent from the above description, disposing the disposable inner container 9 and the lid 10 to form a reservoir containing paint or other liquid to be sprayed may change the sprayed liquid, or The amount of cleaning required when the spray gun 1 is cleared at the end of the working day is considerably reduced.

  On the other hand, it can happen that the sprayed area requires a larger amount of paint than the reservoir can accommodate. In such a case, the user needs to remove the pot 6 from the spray gun 1, remove the collar 11, and remove the lid 10 so that the reservoir can be replenished. The lid 10 must then be repositioned at the open end of the inner container 9, the collar 11 is re-fitted, and the pot 6 needs to be reattached to the spray gun 1 so that the user can continue spraying. . This is time consuming and can cause the paint to spill and / or become contaminated if the lid 10 is removed.

  As an alternative to refilling reservoirs, some users fill two or more reservoirs with the same liquid that can be adapted to a spray gun in turn when spraying a large area. Although the user can change the reservoir and continue spraying with the same liquid, filling and assembling several reservoirs is time consuming and increases operating costs. Thus, each reservoir has a disposable inner container and lid that is discarded after spraying, and using several reservoirs for the same liquid is a waste of such disposable items and the user can It is necessary to have a sufficient number of pots and collars available for assembly.

  Referring now to FIGS. 8-12 of the drawings, a first embodiment of the present invention is shown that allows a user to add paint to a reservoir while attached to a spray gun. For convenience, similar reference numbers in the 100s are used throughout to indicate parts corresponding to FIGS. 1-7, the structure and operation of similar parts will be understood from the above description, and more Will not be explained.

  As shown in FIGS. 8 to 10, the paint pot 106 includes an outer container 108, an inner container 109, a lid 110, and a collar 111. In accordance with the present invention, an opening 130 that is offset from the central connecting tube 115 is provided in the lid 110. Opening 130 is defined by an outer tubular spout portion 131. The tubular spout portion 131 provides a fluid inlet that is closed by a removable cap 132 that is screwed into the tubular spout portion 131.

  The tubular spout portion 131 is formed integrally with the lid 110 and has an external thread 133 that engages the internal thread 134 of the cap 132. In this manner, the cap 132 is removed to allow access to the reservoir through the opening 130 in the lid 110 and reattached to close the opening 130. The screw cap 132 provides a simple way to open and close the fluid inlet and allow liquid to be introduced into the reservoir. On the other hand, it will be understood that any arrangement for introducing liquid into the reservoir that allows the fluid inlet to be opened and closed when needed is used.

  Referring now to FIGS. 11 and 12, when the pot 106 is attached to the spray gun 101 and the spray gun 101 is reversed from its normal operating position, the fluid inlet is at the top of the reservoir (FIG. 11 ), The tubular spout portion 131 is arranged. In this manner, the cap 132 can be removed and paint or other liquid can be added to the reservoir through the fluid inlet without removing the pot 106 from the spray gun 101. The cap 132 is then reinstalled and the spray gun 101 is inverted again to its normal operating position, allowing the user to continue spraying (FIG. 12). The addition of liquid to the reservoir is facilitated by using a funnel to reduce the risk of spillage, for example when the paint is poured from another container. Alternatively, the spout portion 131 is extended by attaching a flexible tube to facilitate the addition of liquid to the reservoir via the fluid inlet.

  If it is necessary to change the liquid in the reservoir, the pot 106 is removed from the spray gun 101 and the inner container 109 and lid 110 are removed as a complete assembly and discarded as described above. A new clean inner container 109 can then be fitted into the pot 106 and filled with fresh liquid before or after the lid 110 is attached and the collar 111 is secured. The pot 106 is then attached to the spray gun 101 and, in use, if the reservoir needs to be refilled, this can be done via the fluid inlet by removing the cap 132 as described above.

  Referring now to FIG. 13, this shows an alternative form of lid 110 'and filter 117' for use with inner container 109 of the previous embodiment. The lid 110 ′ has a conical shape, and the filter 117 ′ includes a flat mesh screen that is pushed into the skirt 113 ′ and crosses the open end of the inner container 109 when the skirt 113 ′ is inserted into the inner container 109. So as to extend in a predetermined position by compression. This arrangement increases the surface area of the filter 117 ′ compared to the previous embodiment where the filter 117 fits over the end of the connecting tube 115. As a result, paint flow is improved. In a variation (not shown), the mesh screen is mechanically held in place by engagement of the perimeter of the screen with ribs, grooves or similar positioning structures inside the skirt 113 '.

  In accordance with the present invention, an opening 130 'is provided in the lid 110' in a conical wall offset from the connecting tube 115 '. Opening 130 'is bounded by an outer tubular spout portion 131' to which a closure cap 132 'is removably secured. The tubular portion 131 ′ extends away from the connecting tube 115 ′ and bends toward the periphery of the lid 110 ′. As a result, access for adding paint is improved.

  In this variation, the opening 130 ′ is above the filter 117 ′ and the lid 110 ′ includes an internal tubular spout portion 135 ′ extending from the opening 130 ′ to the opening 136 ′ aligned with the filter 117 ′. It is integrally formed. In this way, paint added to the reservoir via opening 130 'passes directly into the reservoir without having to pass through filter 117'. As a result, if the paint contains any particles or the like, these are removed by the filter 117 ′ and cannot pass through the connecting tube 115 ′ during use of the spray gun 101.

  Referring now to FIG. 14, this shows an alternative location for the opening 130 "for adding paint to the reservoir with the pot 106" attached to the spray gun 101. An opening 130 "is provided in the side wall 109B" of the inner container 109 ", and an opening 137" is provided in the outer container 108 "through which the tubular spout portion 131" extends to attach the closure cap 132 ". The container 109 "can be folded so that the tubular spout portion 131" can be inserted from within the container 108 "through the opening 137". A cap 132 "is then attached or the opening is poured into the pour. The mouth portion 131 "is large enough to be able to be inserted with the cap 132" already attached.

  This arrangement, with the fluid inlet on the side of the pot 106 ", provides relatively free access to the cap 132" when paint is required to be added to the reservoir. A fluid inlet is preferably provided at the upper end of the inner container 109 "as shown. In this way, it does not significantly interfere with the folding of the reservoir when paint is drawn out during spraying. If it is necessary to add paint to the reservoir while attached to the gun 101, the reservoir can be filled to the level of the opening 130 "without spilling.

  Referring now to FIG. 15, this shows yet another possible position of the opening 130 ″ for adding paint to the reservoir with the pot 106 ″ ″ attached to the spray gun 101. An opening 130 "'is provided in the bottom 109A"' of the inner container 109 "'and an opening 138"' is provided in the outer container 108 "'at the bottom through which the tubular spout portion 131"' can extend. . In this case, the opening 138 "" must be large enough to allow the cap 132 "" to pass freely so as not to prevent folding of the inner container 109 "" when paint is withdrawn from the reservoir.

  In this arrangement, paint is added to the reservoir with the pot 106 "'attached to the spray gun 101 and the spray gun 101 in its normal operating position, i.e. the spray gun 101 is inverted. When refilling the reservoir, the folded or partially folded inner container 109 "'may have to be extended by hand.

  The side wall 108B "'of the container 108"' extends under the bottom 108A "', the pot 106"' is inserted into the inner container 109 "', and the tubular portion 131"' is an opening in the bottom 108A "' It allows standing on a plane, extending through 138 "'. Alternatively, the outer container 108 "" includes a side wall 108B "" that has no bottom wall.

  Referring now to FIGS. 16 and 17, a second embodiment of the present invention is shown in which paint or other liquid is added to the reservoir while attached to a spray gun. For convenience, similar reference numbers in the 200s range will be used throughout to indicate parts corresponding to the previous embodiment, and the structure and operation of similar parts will be understood from the foregoing description, in detail. It will not be explained above.

  In this embodiment, an inner container 209 is permanently attached to a lid 210 having a fluid outlet connectable to a spray gun and a fluid inlet for adding paint to the reservoir. For example, the lid 210 is coupled to the inner container 209 by adhesive or welding.

  This arrangement allows the reservoir structure to be simplified compared to the previous embodiment. In particular, the outer container that houses the inner container 209 and the collar that secures the lid 210 are no longer needed to assemble the reservoir, and are in time.

  In this embodiment, the materials used for container 209 and lid 210 are similar to the previous embodiment. However, it will be understood that this is not essential. Thus, the container 209 can be composed of any material that tears, tears, or resists bursting and that folds as the paint is withdrawn. For example, the container 209 is made from a metal foil and / or the metal foil is incorporated into a plastic laminate to provide the properties required for the container 209.

  The lid 210 and container 209 assembly is pre-filled with liquid and supplied to the user for attachment to the spray gun 1 via the connecting tube 215 of the lid 210. The reservoir can then be refilled via the fluid inlet by removing the cap 232 while still attached to the spray gun 1. Pre-filling is used for liquids that can be packaged and stored without degradation until needed. Thus, pre-filling is particularly useful for liquids that can be supplied ready to use (ie, without having to change colors to match existing colors). For example, a standard color primer that is supplied in an unactivated form and can be activated (if necessary) by appropriate means, such as by exposure to (ultraviolet) light sources or electrical energy, if necessary And / or primer or lacquer.

  Alternatively, the lid 210 and container 209 assembly is supplied empty and the user fills with liquid via the fluid inlet with the cap 232 removed. This allows the user to use standard liquids or liquids that are specially mixed to match a particular color. Again, the reservoir can be refilled during use with the spray gun 1 attached.

  If the container 209 and lid 210 assembly is supplied empty, the container 209 is folded so that the space required for packaging and transport of the assembly by the manufacturer and the assembly until the end user needs it. Reduce the space required to store If the assembly is supplied and stored in a folded state, the container 209 can be returned to its original shape prior to adding the selected liquid.

  In this embodiment, the lid 210 and the container 209 are permanently secured to each other and the reservoir is sufficiently stable to attach to the spray gun without any support. However, for some applications, it may be desirable or necessary to provide support for the container 209 when the reservoir is attached to the spray gun, depending on the size of the container 209 and / or the material used. is there.

  18 and 19 show two support baskets 280 and 281 that can be used to support the reservoir when the container 209 is folded. The cages 280, 281 are made of a plastic material that combines the necessary strength and lightness to facilitate handling of the spray gun to which the reservoir with the cages 280, 281 is attached. However, it will be understood that other materials may be used.

  In FIG. 18, the cage 280 is in the form of a coarse mesh that provides support throughout the length of the container 209 'and allows visual inspection of the reservoir when the container 209' is folded. In FIG. 19, the cage 281 is in the form of a short cylinder that provides support over the length of the container 209 'and is transparent to allow visual inspection of the reservoir when the container is folded. On the other hand, it will be understood that any suitable design of a cage that properly supports the container 209 'may be used. For example, the car includes a plurality of lower extending leg portions that guide the container to fold longitudinally.

  18 and 19, the cages 280, 281 are separate from the lid 210 'and the container 209' and are secured by an annular collar 282 that fits into the lid 210 '. However, it will be appreciated that the car may be formed as an integral part of the lid 210 '.

  It will also be appreciated that the cages 280, 281 and the collar 282 are not limited to the arrangement in which the lid 210 'and the container 209' are permanently attached together. Thus, the cages 280, 281 and the collar 282 are separate parts for the lid and container to secure the lid and container together and to provide support for the reservoir when the container is folded. Used in all.

  Referring now to FIG. 20, an annular groove 240 is provided on the underside of the lid 210 ″ to receive the peripheral edge 212 ″ of the container 209 ″, an alternative to permanently integrate the lid 210 ″ and the container 209 ″ The arrangement is shown. Complementary interlocking structures are provided in the perimeter 212 "and groove 240 to securely close the container 209" with the lid 210 "and prevent the container 209" from separating from the lid 210 ". This assembly is performed during manufacture to provide a pre-filled liquid as described above or to provide an empty lid 210 "and container 209". Alternatively, lid 210 "and container 209" are supplied separately for assembly by the user. A support basket for the container as described above is provided in this arrangement. The cage is a separate part or is formed integrally with the lid 210 ". For example, the outer wall of the groove 240 extends axially to enclose the container 209" over all or part of the length of the container 209 ". .

  Referring to FIGS. 21-24, a third embodiment of the present invention is shown in which paint is added to a reservoir while attached to a spray gun. For convenience, similar reference numbers in the 300s are used throughout to indicate parts corresponding to the previous embodiment, and the structure and operation of similar parts will be understood from the above description in detail. Will not be further explained.

  In this embodiment, the end wall of the lid 310 is conical and the connecting tube 315 is offset from the center of the lid 310 and extends at an angle with respect to the central longitudinal axis of the lid 310. This offset arrangement allows the size of the opening 330 to be increased compared to the previous embodiment. As shown, the opening 330 has a diameter that is slightly less than half the diameter of the lid 310. On the other hand, it will be understood that the size of the opening 330 may be varied from what is shown.

  As will be appreciated, increasing the size of the opening 330 allows for faster filling / refilling of the reservoir formed by attaching the lid 310 to the container 309. In addition, a removable “drop in” sock filter can be used with the aperture 330 to filter the paint poured into the reservoir. As a result, when the reservoir is connected to the spray gun, it is not necessary to use a filter that covers the hole 314 of the connecting tube 315.

In addition, as shown in FIG. 24, when the reservoir is attached to the spray gun 301 and the spray gun 301 is inverted to add paint to the reservoir, access to the opening 330 is reduced in the longitudinal direction of the opening 330. This is improved by the misalignment of the connecting tube 315 extending at an angle to the axis. As a result, the opening 330 is remote from the spray gun 301 and paint can be easily introduced into the reservoir through the opening 330 with the reservoir attached to the spray gun. This further contributes to faster filling of the reservoir, reducing the risk of spillage.

  Depending on the start / end position of the plug-in structure 316 that secures the reservoir to the spray gun 301, the reservoir may protrude to one side of the spray gun 301 due to the offset placement of the connecting tube 315. This can adversely affect the handling of the spray gun 301. Specifically, the spray gun 301 is unstable and difficult to operate, and access for spraying is difficult when the available space is limited.

  Accordingly, the bayonet structure 316 is positioned such that when the reservoir is coupled to the spray gun 301, it is aligned along the spray axis of the spray gun 301. In this way, instability due to the reservoir protruding to one side is avoided. In addition, the inclination of the reservoir 315 to the longitudinal axis of the reservoir is selected so that the reservoir is positioned at an optimum angle with respect to the spray gun to best meet the working requirements. In this way, any adverse effects caused by the misaligned connection tube 315 when handling the spray gun 301 are overcome or at least reduced.

  In this embodiment, the container 309 is permanently attached to the lid 310 by adhesive, welding, or any other suitable method as described above in connection with the second embodiment of the present invention. On the other hand, it will be appreciated that the benefits of shifting the connecting tube 315 and increasing the size of the filter opening 330 apply to any of the other lid / container combinations described herein. Will. For example, the lid is separate from the container and is secured by a collar as described in connection with the first embodiment. Furthermore, it will be appreciated that the offset arrangement of the connecting tube 315 and the increased size of the filter opening 330 apply to any shape lid. For example, the lid has a flat end wall as shown in FIGS. 8-17 or a conical end wall as shown in FIGS.

  Referring now to FIGS. 25-27, there is shown an alternative arrangement that increases the size of the filter opening 330 'of the lid 310' to facilitate filling / refilling of the reservoir according to a third embodiment of the present invention. A connecting tube 315 'is positioned at the apex of the conical end wall of the lid 310' that is aligned with the central longitudinal axis of the lid 310 '. As a result, the reservoir does not protrude to one side of the spray gun regardless of the start / end position of the bayonet structure 316 'that secures the reservoir to the spray gun. When the reservoir is attached to the spray gun, the spout 331 ′ is arranged to protrude on one side over the periphery of the lid 310 ′ to accept the increased size of the filter opening 330 ′ without restricting access. The The wall of the spout 331 ′ protruding above the periphery of the lid 310 ′ guides the paint towards and through the generally D-shaped hole 360 ′ and enters the reservoir at the bottom of the opening 330 ′. The portion 361 ′ is formed.

  The lid 310 'is permanently attached to the container 309' as described above, or it is separate from the container 309 'and is secured by a suitably shaped collar as described above.

  Referring now to FIGS. 28-30, there is shown a fourth embodiment of the present invention where paint is added to the reservoir while attached to the spray gun. For convenience, similar reference numbers in the 400s are used throughout to indicate parts corresponding to the previous embodiment, and the structure and operation of similar parts will be understood from the above description in detail. Will not be further explained.

  In this embodiment, the inner container 409 is housed in the outer container 408 and the peripheral portion 412 is placed on the outer end of the container 408. The lid 410 has a long cylindrical skirt 413 integral with the end wall of the lid 410. The free end of the skirt 413 is pushed into the open end of the inner container 409 to confine the peripheral portion 412 of the inner container 409 between the end of the container 408 and the outer lip 413A integral with the skirt 413.

  The end wall of the lid 410 is conical and is provided with a connecting tube 415 and a filter opening 430 that fills / refills the reservoir while connected to a spray gun, as described for the previous embodiment. In this embodiment, the connecting spout 415 is disposed on the central longitudinal axis of the lid 410, but it will be understood that the lid 410 is provided with both the connecting spout 415 and the filter opening 430 described above. Let's go.

  As will be appreciated, the long skirt 413 increases the volume of the reservoir, allowing the spray gun to be used for large painting operations without having to refill the reservoir with paint repeatedly. Furthermore, the same combination of outer container 408 and inner container 409 is assembled with a lid 410 having a skirt 413 of various lengths to provide a reservoir having a variety of different volumes. In this way, the reservoir of the required volume for a special construction selects the lid 410 with the appropriate size skirt 413 and assembles the selected lid 410 with the same combination of outer container 408 and inner container 409. Can be easily assembled. As a result, the number of parts required to produce a variety of different volume reservoirs is reduced. More specifically, the use of differently sized inner containers 409 requiring differently sized outer containers 408 facilitates the manufacture, supply, storage and assembly of parts for the assembly of various volume reservoirs. Avoided for ease.

  In a modified embodiment (not shown), the filter opening 430 is repositioned from the end wall of the lid 410 and placed in the skirt 413 when allowed by the length of the skirt 413. This allows easy access to the filter opening 430 when the reservoir is connected to the spray gun.

  Referring now to FIG. 31, a lid 410 having a long skirt 413 is used alone to provide a small volume reservoir for small repair work, eg, small area repair. This is by reducing the time required to perform the repair and, if the lid 410 can be used without the inner container 409, by reducing the number of disposable parts required for repair from two to one, Reduce costs.

  A vented cover (not shown) can be used to close the open end of the lid 410 having a long skirt 413.

  Referring now to FIGS. 32 and 33, an alternative arrangement for changing the volume of the reservoir is shown in which a separate cylindrical sleeve 450 is provided between the lid 410 'and the inner container 409'.

As shown, a short skirt 413 ′ on the underside of the lid 410 ′ is pushed into one end of the sleeve 450 to place the outer end of the lid 410 ′ at the end of the sleeve 450. The other end of the sleeve 450 is pushed into the open end of the inner container 409 ′ to confine the peripheral portion 412 ′ of the inner container 409 ′ between the end of the container 408 ′ and the outer lip 450 A of the sleeve 450. A locking collar 411 'can be screwed into engagement with the outer container 408 ' to secure the sleeve 450 relative to the inner container 409 ' . The locking collar 411 ′ is connected via an axially extending web 451 to a holding collar 452 that presses a separate lid 410 ′ against the sleeve 450 when the locking collar 411 ′ is tightened.

As will be appreciated, as the inner container 409 'and lid 410' is assembled et or without the sleeve 450 during which the end of the sleeve 450 cooperates with inner container 409 'and lid 410' It is formed as follows. In this way, the same inner container 409 'and lid 410' combination can be assembled with or without sleeves 450 of various lengths to provide reservoirs having a variety of different volumes.

  More specifically, lid 410 'can be assembled directly to inner container 409' when the reservoir only needs to hold a small amount of paint. The same lid 410 'and inner container 409' can also be assembled with a suitably sized sleeve 450 therebetween to provide a reservoir capable of holding a large amount of paint as needed.

  As a result, one size inner container 409 ', lid 410', and outer container 408 'can be used to assemble with various sized sleeves 450 to arbitrarily form a desired amount of reservoir. In this way, the volume of the reservoir can be varied as desired, with shared components that simplify the manufacture, supply, storage, and assembly of the paint reservoir for a variety of different uses.

  32 and 33, a connecting tube 415 'and a filter opening 430' are provided in the lid 410 '. A variation of this arrangement in which the filter opening 430 ″ is repositioned from the lid 410 ″ to the wall of the extension sleeve 450 ″ is shown in FIG. 34. This may be necessary if paint is required to be added to the reservoir. Allows easier access to the opening 430 ". Also, the manufacture of the lid 410 "is simplified.

  As will be appreciated, the present invention provides a liquid spraying device having a folding reservoir coupled to a spray gun, where the reservoir is attached to the spray gun when Liquid can be added to the reservoir. Other arrangements of fluid inlets that add liquid to the reservoir while attached to the spray gun will be apparent to those skilled in the art and are considered to be within the scope of the present invention.

  The exemplary embodiments described herein are intended to illustrate various scopes and applications of the present invention, whose features of the embodiments are individually or in combination with other features of the same or different embodiments. It will also be appreciated that it will be used.

  Further, while the exemplary embodiments described and shown are believed to represent the best means presently known to the applicant, the invention is not so limited and various changes and improvements may occur to the present invention. It will be understood that this can be done within the spirit and scope of the invention as generally described in the specification.

  Finally, as used herein, the term “liquid” refers to materials such as paints, primeres, primer coats, lacquers, varnishes, and similar paints, as well as other materials such as material properties and Adhesives, sealers, fillers, putties, powder coatings, blasting powders, abrasive slurries that are / are nebulized or applied in a non-nebulized form depending on the intended application All types of fluidity that can be applied to the surface using a spray gun (whether or not intended to color the surface), including, without limitation, mold release agents and casting finishes The term “liquid” should be received accordingly.

Claims (4)

A device, such as a spray gun for spraying liquid, comprising a foldable reservoir for sprayed liquid and a spray nozzle for dispensing the liquid supplied from the reservoir, the reservoir being connectable to the device A fluid inlet and a fluid inlet for adding liquid to the reservoir, the fluid inlet having a removable closure for opening and closing the fluid inlet, the reservoir being coupled to the device Sometimes direct access to the closure is possible,
The reservoir comprises a foldable portion for liquid supplied to the spray gun and a mounting portion with the fluid outlet connecting the reservoir to the spray gun;
The apparatus wherein the foldable portion comprises a flexible container for liquid and the attachment portion comprises a lid configured to close the opening of the flexible container.   The apparatus of claim 1, wherein the attachment portion is configured to removably couple the fluid outlet to the apparatus.   The device of claim 2, wherein a plurality of cooperating structures are provided on the attachment portion and the device to removably secure the reservoir to the device. A spray gun for spraying material such as paint comprising a spray nozzle for spraying liquid and a foldable reservoir for liquid, the reservoir having a fluid outlet detachably connected to the spray gun The reservoir can be separated and discarded after use, the reservoir further having a fluid inlet that allows liquid to be drained into the reservoir when the reservoir is attached to the spray gun. Is configured to allow direct access to the fluid inlet,
The reservoir comprises a foldable portion for liquid supplied to the spray gun and a mounting portion with the fluid outlet connecting the reservoir to the spray gun;
The foldable portion comprises a flexible container for liquid, and the attachment portion comprises a lid configured to close the opening of the flexible container;
Spray gun.

Images