ES2362646T3 - DEPOSIT WITH ENTRY TO FILL FOR MANUAL SPRAY GUNS. - 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

Tank with filling in for guns manual sprayers.

Technical field

This invention relates to improvements in a tank for a spray gun for the purpose of spraying a liquid or related to said deposit. The invention has application particular, but not exclusive, in hand spray guns provided with a liquid reservoir to spray a substrate.

Background

Spray guns are widely used in vehicle body repair shops when A vehicle that has been repaired after an accident. In known spray guns, the liquid is contained in a tank attached to the gun from where it is fed to a spray nozzle. When it comes out of the mouthpiece sprayer, the liquid is atomized and forms a spray with the air tablet supplied to the nozzle. The liquid can be gravity fed, suction fed or, more recently, fed by pressure through an air purge from the source of compressed air to the tank.

A typical paint finish may require the application of a primer, a base coat and a final coat. The spray gun and tank must be thoroughly cleaned when the liquid in the paint can is changed to avoid cross contamination that may adversely affect the finish. This is especially important when spraying a part of a vehicle to match the color exactly with the color existing in the adjacent body.

Cleaning the spray gun and the deposit takes time and often requires the use of solvents that They are expensive and can present hazards to the health of the operator. To reduce the amount of cleaning and to facilitate the change of One liquid to another has been previously proposed in WO 98/32539 an arrangement in which the liquid is contained in a tank that is capable of crushing, that works like a liner disposable for a can of paint.

In a construction, the deposit comprises a open end container, which is a tight fit in the boat of paint, and an independent lid, which closes the open end of the container and has an outlet that can be connected to the gun sprayer During use, the container is crushed to as the liquid is removed and, after spraying, the container can be removed from the paint bucket with the lid fixed, and discarded. Then you can equip the boat with paint a new clean container to apply a liquid Different as the next layer. As a result, the amount of required cleaning is greatly reduced and the gun sprayer can be easily adapted to apply liquids Different in a simple way.

With this provision, the deposit has to be separated from the spray gun and the cap be removed if You want to fill up the tank with more liquid. For example, when painting a large area or applying several layers of it liquid to the same or to different vehicles, such as when Use a primer or lacquer finish. This takes time and It can be messy if the liquid spills. Also the separation of the spray gun tank and the cover removal to add more liquid to the tank increase the risk of contamination from other sources, for example dust or dirt. Be can remove unwanted solid particles by inclusion of a filter, but it can get blocked and does not prevent the finish color is adversely affected by some impurity that has been absorbed by the liquid.

In US-A-5,582,350, which describes the features of the preamble of claim 1, another arrangement for lining a can of paint is disclosed in order to reduce the amount of cleaning. In this arrangement, the paint is contained in a bag that is capable of being crushed, that is inside the paint can, and that can be connected to a spray gun through an outlet at one end of the can. The other end of the boat is closed by a lid that is removable to provide access to the bag inside the boat. The bag has a zip closure that can be closed again, by means of which paint can be added to the bag. The bag is initially connected to the outlet while it is empty. Next, paint is poured into the bag and the bag is sealed before securing the lid to close the canister. At the end of the spray, the bag can be removed for disposal and replaced by a new clean bag. With this arrangement, you run the risk of spillage if the bag is overfilled before adjusting the zipper. In addition, if it is desired to add paint to the bag during use, access to the zipper is only possible if the lid is removed to open the canister. In addition, you can have a crushed or partially crushed bag so that it extends before opening the zipper to add paint and the bag can be disconnected from the outlet. As a consequence, paint may leak from the bag, so cleaning of the canister is needed when the bag is removed at the end of spraying. Therefore, this arrangement is only suitable, in general, for a single use in which the bag is filled once at the initial setting of the spray gun and is not intended to refill the
bag.

Summary

The present invention is intended to improve plus our existing system and to provide benefits and advantages Additional for the manufacturer and / or the user.

More specifically, the present invention provides an apparatus for spraying a liquid contained in a tank, in which the liquid can be added to the tank without separate it from the device.

In addition, the present invention provides a tank that is able to crush to connect to a device spraying, in which the reservoir can be supplied empty or have been previously filled with liquid.

The present invention also provides a tank that is able to crush for use with a spraying device that can be easily refilled while attached to the device, and is disposable after use to reduce the amount of cleaning required.

Reference is made later in this report. to other objects, benefits and advantages of the invention. According to In the present invention, a deposit having all the features of claim 1. Other features Preferred are the subject of the dependent claims.

An apparatus is provided, such as a gun sprayer to spray a liquid, comprising a reservoir and a spray nozzle to distribute liquid supplied from the tank, the latter having a fluid outlet that is can connect to the device and a fluid inlet to add liquid to the reservoir, and the fluid inlet having a closure Detachable to open and close the fluid inlet, in which the closure is directly accessible when the tank is connected to the device

By the provision of an independent entrance of fluid with a detachable closure that is directly accessible when the tank is connected to the device, it can be added liquid to the tank without removing it from the device. This is an advantage particularly if the capacity of the deposit is less than the volume of paint required to paint a given area. This way when a large area is painted, the user can simply fill up top the tank with additional paint, as required, with the tank still attached to the device. As a result, the risk of Spill and / or contamination of the paint is reduced. It is like that beneficial when a clear coat of finish is applied, such like a lacquer, so it becomes considerably easier to adding solvent to the reservoir to reduce the viscosity of the transparent layer for "its discoloration or mixture".

Advantageously, the deposit is adapted to a releasable connection to the device. For example, the deposit and the apparatus may be provided with collaborating formations to securely release the deposit. The formations that collaborate with each other may be applicable with an action of thrust / torsion, such as bayonet type formations. In this way, the tank can be connected to the gun of the device and free of the same in a simple way, which requires minimal effort or a minimum manual dexterity by the user.

The deposit may comprise a portion that is capable of crushing for the liquid to be supplied to the apparatus and a fixing portion provided with the fluid outlet to connect the deposit to the device. For example, the portion that is capable of crush can comprise a flexible container for the liquid and the fixing portion may comprise a cover arranged for close an opening in the container. Preferably, the container and the lid is disposable and can be thrown away after utilization.

In one arrangement, the fluid outlet and the fluid inlet are arranged in the lid at one end of the reservoir, and the fluid inlet is constructed and arranged to be accessible when the tank is connected to the device through of the fluid outlet. Thus, the layout of the entrance of fluid does not interfere with tank crushing when It is removing the liquid. In addition, arranging the fluid inlet and the fluid outlet at the end of the tank, the apparatus will can be arranged to position the fluid inlet so as to allow that the tank be filled substantially completely. Further, the fluid outlet may be located above the level of the liquid in the tank. In addition, having the fluid inlet in the cap, it is possible to insert a rod or other tool to Stir the liquid in the tank, thereby ensuring a mixture of bottom of an added liquid with any amount of liquid that is kept in the tank for continuous spraying. it's possible also stirring to ensure thorough mixing.

The fluid outlet may be arranged in a central longitudinal axis of the tank, but more preferably, the fluid outlet is displaced to one side of the longitudinal axis central. The displaced layout provides more space for accommodate the fluid inlet and allows the inlet to be enlarged of fluid In this way, it is easier to fill the tank with through the fluid inlet with less risk of spillage, and it you can place a detachable filter in the fluid inlet to filter the liquid as it is being introduced. How consequently, it may not be necessary to arrange a filter inside from the reservoir to filter the liquid as it is removed from the deposit through the fluid outlet, thereby reducing the risk of liquid flow being restricted by blockages during spraying. The fluid inlet may be located into the marginal edge of the lid or it can extend towards out beyond that edge.

The fluid outlet can be extended parallel to the longitudinal axis of the tank, but more preferably, the fluid outlet is inclined relative to said axis. The tilt of the fluid outlet provides greater clearance between the apparatus and the fluid inlet, so that access is improved to the fluid inlet when the reservoir is fixed to the apparatus.

The lid can be separated from the container flexible and of means provided to secure the cover for the purpose of Close the opening in the container. In a provision, the flexible container is a tight fit in an outer boat and provides a liner for it, and the lid is secured so releasable to the container through an application of a collar block with the outer boat. In this way, the outer boat supports the flexible container and improves the stability of the tank when It is connected to the device. In addition, after use, the flexible container and lid can be discarded and the outer canister can be retained for mounting with a flexible container and a New and clean lid. As a result, the amount of cleaning required.

In another arrangement, the lid and the container flexible can be bonded together by adhesive, welding or Similary. Alternatively or additionally, the lid and the container flexible can be mechanically secured to each other through the application of interlocking formations or similar. Of this mode, the tank can be supplied empty to fill the user through the fluid inlet or it may have been filled previously of a liquid, and is available for the user to attach to the device. A cage or other form of support can be provided external so that the flexible container improves the stability of the deposit when attached to the device.

In the event that the deposit is supplied empty, it can be crushed to a compact shape for your storage and transport Prefill can be used for liquids that can be packaged and stored without degrading until that are required. In this way, pre-filling can be especially useful for liquids that can be supplied prepared for use (that is, they do not require any modification to match the color with an existing color). For example, a base layer of standard colors of a hue specified and / or primers or lacquers that can be supply in a non-activated form and activate (if necessary) by suitable means such as by exposure to a light source (ultraviolet) or electric power, when required. Whichever provision is used, the deposit will be can be filled, during use, without separating it from the device by the use of the fluid inlet.

In another additional arrangement, the lid has a extreme wall and a side wall that extends from the wall extreme, the side wall being arranged to connect the cover to the flexible container releasable or permanent, as has been previously described. With this arrangement, the fluid outlet it can be arranged on the end wall, the fluid inlet in the side wall. In this way, you can improve access to the fluid inlet, and the inlet does not interfere with the crushing of the flexible container, during use of the deposit. A set of covers with walls sides of different length may be provided for assembly with a common flexible container, so they can be produce deposits of different volume by lid selection appropriate.

In an additional provision, the deposit includes a cover that extends between the lid and the container flexible, and that connects both. With this provision, the output of fluid may be arranged in the lid at the end of the reservoir, the fluid inlet in the sheath being arranged. A set of covers of different lengths can be provided for assembly with a common flexible container and lid, so that the Tank volume can be modified by case selection appropriate. Also, the tank can be mounted without the cover, if not a fluid inlet is required. Alternatively, the lid can be provided with a fluid inlet, as described previously.

The liquid can be filtered to remove unwanted solid particles when the tank is filling. Alternatively, the deposit may include a filter to remove unwanted solid particles of the liquid supplied to the apparatus a through the fluid outlet. In the event that a filter is arranged in the tank, the fluid inlet is intended for introduce liquid into the reservoir, on the opposite side of the filter regarding the fluid outlet. Thus, the fluid added to the reservoir through the fluid inlet must pass through the filter before reaching the fluid outlet. As a consequence, the unwanted solid particles, that is, impurities, introduced with the liquid added to the tank are retained inside of the tank and discarded with the container and the lid.

Preferably, the fluid inlet comprises an opening closed by a removable closure such as a stopper thread. The opening may be arranged in a tubular portion of the mouth protruding from the tank, with the screw cap secured releasable to it. In this way, the plug can be unscrew to open the fluid inlet so that you can add liquid to the tank when required and you can return to fix the cap to close the entrance in order to continue spraying without removing the tank from the device.

Alternatively, the deposit is planned in combination with the spray gun connected to the outlet of reservoir fluid, preferably releasably connected, so, after use, the deposit can be separated and discarded, the deposit also having an entry of fluid to add liquid to it arranged to be directly accessible when the tank is attached to the gun.

The spray gun can be of the type gravity fed or pressure fed.

In another embodiment, a deposit is provided to supply a liquid to a spray gun or the like, the reservoir having a fluid outlet and an inlet independent of fluid, the tank being adapted for a releasable connection of the fluid outlet to the spray gun so that the fluid inlet is directly accessible to introduce liquid into the tank while it is attached to the gun sprayer, so the tank can be crushed when it withdraws liquid from it while using the gun sprayer

The deposit may have been previously filled of liquid to be sprayed, allowing fluid to enter add liquid to the tank, during use, without separating the spray gun tank. Alternatively, the deposit can be supplied empty for the user to fill it with the liquid of your choice

A deposit is planned to fix one spray gun, the same having a fluid outlet for supply liquid to the spray gun and an inlet independent of fluid to introduce liquid into the tank, the fluid outlet being formed in an extreme wall of the reservoir and the fluid inlet being formed in a side wall of the reservoir to be accessible when the fluid outlet is fixed to the spray gun.

The end wall can be a tank lid and the side wall can be an integral skirt with the lid or a independent cover connected to the cover, so that the entrance of fluid is directly accessible when the reservoir is connected to the spray gun. Preferably, the side wall is extends between the extreme wall and connects it to a container flexible for liquid that is able to crush when the tank liquid during use. In this way, the fluid inlet does not interfere with vessel crushing during use

Alternatively, a deposit is planned to fix a spray gun, the same having an outlet of fluid to supply liquid to the spray gun and a independent fluid inlet to introduce liquid into the reservoir, the fluid outlet being formed in an extreme wall of the reservoir and the fluid inlet being formed in the wall extreme displaced with respect to the fluid outlet to be accessible when the fluid outlet is fixed to the gun sprayer

The fluid outlet may be arranged in the central longitudinal axis of the tank, but more preferably, the fluid outlet is displaced to one side of the longitudinal axis. The displaced arrangement provides more space to house the fluid inlet, which can be made larger to facilitate the filling of the tank through the fluid inlet.

The fluid outlet can be extended parallel to the longitudinal axis of the tank, but more preferably, the fluid outlet is inclined relative to said axis. The angled arrangement increases the clearance between the gun sprayer and fluid inlet, thereby improving access to said input when the tank is attached to the gun sprayer, so that it is easier to fill the tank to through the entrance.

Preferably, the fluid inlet is directly accessible when the tank is connected to the spray gun Preferably, the deposit includes a container that is able to crush for liquid and wall end is provided with a lid arranged to close one end Open container.

A deposit is planned to fix one spray gun, said reservoir having a container for a liquid, a lid to close the container, said lid having a fluid outlet that can be connected to a spray gun and a volumetric adapter between the container and the lid.

The volumetric adapter can be a part integral of the lid, for example a hanging skirt, or can be separated from the lid and the container, for example a cover that It can be inserted between the lid and the container. In this way, a The same container can be adapted to provide the tank with any desired volume by selecting and adjusting the appropriate adapter.

The adapter may include a fluid inlet to add liquid to the tank while it is attached to the gun sprayer For example, the adapter may be provided with a Detachable closure for fluid inlet.

Brief description of the drawings

Next, the invention will be described with more detail, by way of example only, with reference to the drawings that are accompanied, in which:

Figure 1 is a perspective view of a prior art spray gun;

Figure 2 is an exploded isometric view ordered, of the component parts of the paint deposit shown in figure 1;

Figure 3 is a perspective view of the paint tank, mounted, shown in figure 2;

Figure 4 is a longitudinal section through of the paint reservoir shown in figure 3;

Figure 5 shows the separation of the parts components of the paint tank of figure 3 after its utilization;

Figure 6 is a perspective view of a adapter to connect the paint tank to the gun sprayer;

Figure 7 is a longitudinal section through of the adapter shown in figure 6;

Figure 8 is an exploded isometric view ordered, similar to figure 2, which shows the component parts of a paint reservoir according to a first embodiment of the invention;

Figure 9 is a similar perspective view to figure 3, which shows the mounted paint tank of the figure 8;

Figure 10 is a longitudinal section a through the paint reservoir of figure 9;

Figure 11 is a perspective view that shows the reservoir of figures 8 to 10, attached to the gun sprayer of figure 1, with the spray gun shown inverted and the closure cap removed to add paint to the Deposit;

Figure 12 is a perspective view of the spray gun shown in figure 11, which has been returned to invest and that is ready for use;

Figure 13 is a longitudinal section of a alternative cover and filter for the tank shown in the Figures 8 to 12;

Figure 14 is a longitudinal section that shows an alternative position of the fluid inlet and the plug closure for the tank shown in figures 8 to 12;

Figure 15 is a longitudinal section that shows another additional position of the fluid inlet and the plug closure for the tank shown in figures 8 to 12;

Figure 16 is a perspective view of a paint tank according to a second embodiment of the invention;

Figure 17 shows the paint tank of Figure 16 in a crushed state;

Figure 18 shows a modification of the paint tank shown in figure 16, which includes a cage of support;

Figure 19 shows a support cage alternative for the paint tank shown in the figure 16;

Figure 20 shows a modification of the paint reservoir shown in figure 16;

Figure 21 is a longitudinal section of a paint tank according to a third embodiment of the invention;

Figure 22 is a perspective view of the paint tank of figure 21, with the closure cap retired;

Figure 23 is a plan view of the tank of painting of figure 21;

Figure 24 is a perspective view that shows the paint tank of figures 21 to 23 connected to the spray gun of figure 1, with spray gun shown inverted and the closure cap removed to add paint to the deposit;

Figure 25 is a longitudinal section of a alternative cover for the paint tank shown in the figure twenty-one;

Figure 26 is a perspective view of the cover shown in figure 25, with the closure cap removed;

Figure 27 is a plan view of the lid shown in figure 25;

Figure 28 is a longitudinal section of a paint tank according to a fourth embodiment of the invention;

Figure 29 is a longitudinal section of the paint tank cover shown in figure 28;

Figure 30 is a perspective view of the paint reservoir shown in figure 28;

Figure 31 is a perspective view that shows the cover of figure 29, attached to a spray gun to form a paint deposit;

Figure 32 is a longitudinal section that shows a modification of the paint tank of the figure 28;

Figure 33 is a perspective view of the paint reservoir shown in figure 32; Y

Figure 34 is a perspective view, similar to figure 33, which shows an alternative arrangement for fluid inlet

Detailed description

Figure 1 of the drawings illustrates a gun prior art paint sprayer 1 of the type fed by gravity described in our patent application, in processing together with this, published with the number: WO 98/32539.

The gun 1 comprises a body 2, a handle 3 extending downward from the rear end of the body and a spray nozzle 4 at the front end of the body. The gun 1 is manually operated by a trigger 5 that is pivotally mounted on the sides of the same.

A paint tank 6, which contains paint (or similar material) to be unloaded using the gun, it is located over the upper body 2 and is in communication with a internal passage (not visible) that extends through the gun to nozzle 4.

During use, gun 1 is connected through a connector 7 at the lower end of the handle 3 to a source of compressed air (not shown) so that, when the user presses the trigger 5, air is supplied compressed through the gun to the nozzle 4. As consequently, the paint supplied by gravity from the canister paint 6 until the nozzle 4 is atomized when leaving said nozzle 4 and forms a spray with the compressed air leaving the nozzle 4.

Referring below to the figures 2 to 4 of the drawings, the paint can 6 includes a container outer 8, a disposable inner container 9, a lid 10 disposable and a collar 11. The inner container 9 corresponds fit to the inside (and it's a tight fit in it) of the outer container 8 and has a narrow flange 12 in the open end that sits on the upper edge of said container 8.

The cover 10 has a hanging skirt 13 which is a push fit on the open end of the inner container 9 and a central opening 14 from which a tube 15 of the connector that forms a fluid outlet. The tube 15 is provided, at its free end, outward extensions 16 that form part of a bayonet connection. The opening 14 is covered by a filter mesh 17 that can be adjusted by pushing within the opening 14 or can be an integral part of the lid 10.

The skirt 13 is hooked from the edge outside of lid 10 and flange 12 of inner container 9 is trapped between the end of the outer container 8 and the edge exterior of said lid 10. The lid 10 is firmly held in its site on the container 8 by means of the annular collar 11 which is screw into said container 8 on the top of said lid 10. In the assembled state, inner container 9 and lid 10 they form a reservoir to hold the paint or other liquid to supply the nozzle 4 through the tube 15 of the connector.

Paint can 6 is attached to the gun sprayer 1 via an adapter 18, shown separately of the paint can 6 in figure 6. The adapter 18 is a tubular component that is formed internally, at one end 19, with the other part of the bayonet connection for fixing to the tube 15 of the cover 10 connector. On the other end 20, the adapter 18 is shaped to match the standard element of fixing the paint can of the spray gun (typically a screw thread).

The container 8 of the paint can 6 is formed from a plastic material, for example polyethylene or polypropylene, and can be translucent (as shown in the figure 2) or opaque, and of any suitable size. For use with a paint spray gun, could be used typically 8 containers with a capacity of 250, 500 or 800 ml, although other sizes could be used, as required.

In this embodiment, the container 8 is shaped generally cylindrical closed at one end 8A. The other end is open, and a side wall 8B is formed with a thread of external screw 8C. The base 8A is flat, so that the container 8 may be straight, without support, on a surface flat, and is formed with a central hole 8D for air. Internally, the side wall 8B tilts inwards slightly from the open end to the base 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 imposed by the inner shape of the container 8 and agrees with it. The inner container 9, similar to the inner part of the container 8, is generally cylindrical in shape closed at one end 9A, and a side wall 9B inclines slightly from the mouth towards the closed end
9A.

The flange portion 12 and the base or end closed 9A are relatively rigid, but the side walls 9B They are flexible and can be made to crush. Do not However, the inner container 9 is capable of being straight, without support, on the base 9A, with the side walls 9B extended and vertical as shown in figures 2 to 4.

When the inner container 9 is crushed, the relatively rigid 9A base retains its shape but approaches the portion of the flange 12 as a result of the crushing of the side walls 9B, as illustrated in figure 5. The walls 9B sides are crushed, similar to a plastic bag, without breaking (for example by separation, tearing or cracking).

In one form, the inner container 9 has a height of approximately 110 mm, a diameter at its base 9A of approximately 78 mm and a diameter in its mouth (excluding flange portion 12) of approximately 86 mm. The 9A base has a thickness of about 400 µm, the flange portion 12 It has a thickness of approximately 900 µm and the walls 9B sides have a thickness of approximately 150 µm.

In another form, the inner container 9 has the same height and the same diameters at its base 9A and its mouth, but the base 9A has a thickness of approximately 300 µm, the portion of the flange 12 has a thickness of approximately 200 µm and the side walls 9B have a thickness in the range from 50 to 250 µm.

The lid 10 is also formed from a plastic material, for example, polyethylene or polypropylene, and can be formed by an injection molding process. Cover 10 may be translucent or opaque and may be colored. He collar 11 can be a molded plastic component or it can be a machined metal component (for example, aluminum). He adapter 18 can be a metal or plastic component and can be formed, for example, from aluminum, and be anodized or plated

To use paint can 6, the adapter 18 is fixed at the end 20 to the spray gun and left on position. Then, with the paint can 6 removed as shown in figure 2, the inner container 9 is pushed into the outer container 8. Then, it introduce paint into the inner container 9 and, if necessary, mixes with other dyes, hardeners and diluents (solvents). Next, the cover 10 is pushed into place and the collar 11 is fixed with screws tightly to maintain the cover 10 in position.

Then the upper portion of the inner container 9 is caught between the skirt 13 of the lid 10 and the side wall 8B of the container 8, and the flange 12 of the container inner 9 is caught between the upper edge of the container 8 and the collar 11, as shown in figure 4.

Then the spray gun 1 is invests from its normal operating position illustrated in the Figure 1. Next, the end of the tube 15 of the connector is you can attach to the adapter 18 without spilling the paint contained in the tank, by a simple push / torsion action to apply to bayonet formations that collaborate with each other. TO then the spray gun 1 can be returned to its normal operating position for mode use usual.

As the paint is removed from the inside of the inner container 9, the sides 9B of the inner container 9 are they crush as a result of the lowest pressure within the inner container 9. The base 9A of the inner container 9, being more rigid, retains its shape so that the inner container 9 tends to crush in the longitudinal direction instead of in the transverse, thereby reducing the possibility of bags remaining of paint trapped in the inner container 9.

The user can choose to evacuate the air from inside the inner container 9 before operating the gun sprayer 1, although this is not essential. However, what above increases the range of angles in which it will work the spray gun 1 successfully, since it does not exist no risk of air entering said gun 1 from the canister paint 6. To evacuate the air from inside the inner container 9, trigger 5 of spray gun 1 should be operated while said gun 1 is still in the inverted position.

After use, when cleaning the spray gun 1, said gun 1 can be returned to be reversed from its operating position shown in the figure 1. The compressed air line is disconnected and operated briefly the trigger 5 to allow the paint inside the spray gun 1 drain back into the container inner 9 in the boat 6. Next, the boat 6 is removed from the spray gun 1 decoupling bayonet formations and separating the tube 15 from the adapter connector 18 that is maintained on the spray gun 1.

As will be appreciated, bayonet formations they provide a connection system that allows boat 6 to be quickly connected to spray gun 1 and removed from the same with a simple push-torsion action, which requires less manual dexterity than a threaded connection. Be understand, however, that any other type of connection system for releasably connecting boat 6 to the spray gun 1.

The collar 11 is removed from the outer container 8 and then the cover 10 is removed, carrying with it the crushed inner container 9, as shown in figure 5. The lid 10 (including filter 17) and inner container 9 are discard, leaving the outer container 8 and collar 11 clean and prepared for reuse with an inner container 9 and a cover 10 new. You only have to clean the gun itself sprayer 1, resulting in a substantial reduction in Amount of solvent used.

The risk of spilling unused paint from boat 6 it is also substantially reduced, since the inner container 9 is removed and discarded in a somewhat folded state with lid 10 in place. In addition, since the container inside 9 is discarded in a crushed state, the amount of space required to collect inner containers 9 used.

Since the inner container 9, as has been described above, it is a precise fit inside the container exterior 8 and has a uniform internal surface, it is possible mix paint in the inner container 9 inside the container exterior 8, instead of in a separate receptacle. Of this mode, cleaning of a receptacle can also be eliminated independent mixing to achieve an additional reduction in Amount of solvent used.

The general shape of the outer container 8 and, in particular, the fact that it is flat and stable when it is in the orientation shown in figure 2, it does so particularly suitable for mixing paint in the inner container 9 supported inside the container 8.

The possibility of the utensil being minimized mixing puncture or damage the inner container 9. First, since the inner container 9 fits inside the container exterior 8 exactly and, secondly, since the self-supporting nature of the inner container 9 means that it is less likely to be dragged spinning inside the outer container 8 during the mixing process.

To facilitate the use of the container inner 9 as a mixing receptacle, outer receptacle 8 It is translucent and the 8B side wall is provided with 21 marks (figure 2) to indicate the volume of the contents of said container inner 9. Alternatively, if the outer container 8 is opaque, could be formed with grooves in the side wall 8B through which the inner container 9 could be seen to allow the user of the spray gun 1 can evaluate in all moment the amount of paint in the can 6.

When paint is mixed in the container interior 9, the inclusion of the filter mesh 17 in the lid 10 prevents unwanted particles in the paint from entering the gun sprayer 1. Mesh 17 can be omitted, however, if the paint is textured, or if mixed in a receptacle independent and filtered when transferred to the container interior 9, or if the presence of impurities in the paint is not important.

As will be apparent from the description. above, the disposition of the disposable inner container 9 and of the lid 10 to form a reservoir containing the paint or other liquid to be sprayed, considerably reduces the amount of cleaning required when changing the liquid to be sprayed or when spray gun 1 is stored at the end of the workday job.

It may happen, however, that the area to be painted require a volume of paint greater than that which can be contained in Deposit. In these circumstances, the user has to remove the canister 6 of spray gun 1, release collar 11 and remove lid 10 to allow the tank to fill up above. Then the cover 10 has to be replaced on the open end of the inner container 9, the collar 11 readjust and canister 6 reattach to spray gun 1 to allow the user to continue spraying. This takes time and there is a risk that the paint will spill and / or become contaminated when cover 10 is removed.

As an alternative to refilling the deposit, some users fill two or more deposits with the same liquid as can be adjusted to the spray gun, in turn, when They pulverize large areas. However, the user can change the deposits and continue spraying with the same liquid, as you fill and setting up several warehouses consumes time and adds costs of functioning. In this way, each deposit has a container disposable interior and a lid that is discarded after spraying, and the use of several tanks for the same liquid is a waste of such disposable items and requires that the user have at their disposal a sufficient number of boats and collars for the assembly of the tanks.

Referring below to the figures 8 to 12 of the drawings, a first embodiment of the present invention that allows the user to add paint to the tank while attached to the spray gun.

For convenience, reference numbers similar in the 100 series are used in all figures to indicate parts corresponding to figures 1 to 7, and the construction and operation of similar parts will be understood as from the above description and will not be described further detail.

As shown in figures 8 to 10, the boat of paint 106 comprises an outer container 108, a container interior 109, a cover 110 and a collar 111. According to the present invention, the cover 110 is provided with an opening 130 offset from the central tube 115 of the connector. The opening 130 is limited by an external tubular portion of the mouth 131, which provides a fluid inlet that is closed by a plug detachable 132 screwed into said tubular portion of the mouth 131.

The tubular portion of the mouth 131 is formed integrally with cover 110 and has an external screw thread 133 for application to an internal screw thread 134 of the cap 132. In this way, the plug 132 can be removed to allow access to the tank through opening 130 in lid 110 and be secured again to close the opening 130. The stopper thread 132 provides a simple method to open and close the fluid inlet and allow liquid to enter the Deposit. It will be understood, however, that any disposition to introduce liquid into the tank that allows fluid inlet can be opened and closed when required.

Referring below to the figures 11 and 12, the tubular portion of the mouth 131 is arranged so that, when the canister 106 is secured to the spray gun 101 and the spray gun 101 is inverted with respect to its normal operating position, the fluid inlet is in the upper end of the tank (figure 11). In this way, the plug 132 can be removed and paint or other liquid added to the reservoir through the fluid inlet, without removing the canister 106 from the spray gun 101. Next, the plug 132 can be reattach and spray gun 101 revert to its normal operating position, to allow the user continue spraying (figure 12). The addition of liquid to Deposit can be facilitated by the use of a funnel to reduce the risk of spillage, for example when paint is poured from another container. Alternatively, the mouth portion 131 can be prolong fixing a flexible tube to facilitate the addition of liquid to the reservoir through the fluid inlet.

When you want to change the liquid in the tank, canister 106 is separated from spray gun 101, and the inner container 109 and the lid 110 removed as a set complete and discarded as described above. TO then a new clean inner container 109 can be adjust in canister 106 and fill with the new liquid before or after to adjust the cover 110 and secure the collar 111. Then, canister 106 can be fixed to spray gun 101 and, during its use, if the deposit has to be filled to the top, This can be done through the fluid inlet by removing the plug 132 as described above.

Referring below to the figure 13, an alternative form of cap 110 'and filter 117' is shown for its use with the inner container 109 of the embodiment previous. The lid 110 'has a conical shape and the filter 117' comprises a flat mesh sieve that adjusts by pushing inside the skirt 113 'and is held in place by compression to extending through the open end of the inner container 109 when the skirt 113 'is inserted into the inner container 109. This arrangement increases the surface area of the filter 117 ' compared to the previous embodiment, in which the filter 117 fits over the end of tube 115 of the connector. How Consequently, the flow of paint is improved. In a modification (no shown), the mesh sieve is mechanically held in place by application of the marginal edge of said sieve with a nerve, a grooving or similar formation of placement on the inside of the skirt 113 '.

In accordance with the present invention, the lid 110 'is provided with an opening 130' in the conical wall offset from the tube 115 'of the connector. The opening 130 'is limited by an external tubular portion of the mouth 131 ', on the which is releasably secured a closure cap 132 '. The tubular portion 131 'extends at an angle away from the tube 115 'of the connector towards the peripheral edge of the cover 110'. How Consequently, access to add paint is improved.

In this modification, the opening 130 'is by above the filter 117 'and the cover 110' is formed with a portion internal integral tubular mouth 135 ', which extends from the opening 130 'to an aligned opening 136' in filter 117 '. From this way, the paint added to the reservoir through the opening 130 'passes directly into the tank without having to pass through the 117 'filter. As a consequence, if the paint contains any particle or similar, is removed by filter 117 'and they cannot pass through the 115 'tube of the connector during the use of the spray gun 101.

Referring below to the figure 14, an alternative position of the opening 130 '' is shown for add paint to the tank with the 106 '' canister attached to the gun sprayer 101. The opening 130 '' is arranged in the wall side 109B '' of inner container 109 '' and container exterior 108 '' is provided with an opening 137 '' through the which extends a tubular portion of the mouth 131 '' to be fixed to the closure cap 132 ''. The inner container 109 '' can be crushed to allow the tubular portion of the mouth 131 '' to be introduced through opening 137 '' from within the 108 '' container. Then, the cap 132 '' or the opening can be large enough to allow the mouth portion 131 '' be inserted with cap 132 '' already set.

This arrangement of the fluid inlet in the boat side 106 '' provides relatively free access to the cap 132 '' when you want to add paint to the tank. Preferably As shown, the fluid inlet is arranged at the end top of inner container 109 ''. In this way, it does not interfere significantly with the crushing of the deposit when it Remove paint during spraying. In addition, when desired add paint to the tank with the 106 '' canister attached to the gun sprayer 101, said reservoir can be filled to the level of the opening 130 '' without spilling.

Referring below to the figure 15, another possible additional position of the opening 130 '' 'is shown to add paint to the tank with the canister 106 '' 'fixed to the spray gun 101. The opening 130 '' 'is arranged in the base 109A '' 'of inner container 109' '' and outer container 108 '' 'is provided with an opening 138' '' in the base through which can extend a tubular portion of the mouth 131 '' '. In in this case, the opening 138 '' 'must be large enough to that the cap 132 '' 'pass freely through it in order not to interfere with the crushing of the inner container 109 '' ' when paint is removed from the tank.

With this arrangement, paint can be added to the tank with the canister 106 '' 'fixed to the spray gun 101, and said gun 101 being in its normal operating position, that is, spray gun 101 does not have to be inverted. When the tank is refilled, the inner container 109 '' ' crushed or partially crushed may have to be extended manually.

The side walls 108B '' 'of the container 108 '' 'can extend below base 108A' '' to allow boat 106 '' 'to stand straight on a flat surface, with the inner bowl 109 '' 'inserted and the tubular portion 131 '' 'extending through opening 138' '' in the base 108A '' '. Alternatively, the outer container 108 '' 'can comprise only 108B side walls' '', without any wall of base.

Referring now to Figures 16 and 17, a second embodiment of the present invention is shown to add paint or other liquid to the reservoir while it is attached to the spray gun. For convenience, similar reference numbers in the 200 series are used in all figures to indicate parts corresponding to the previous embodiment, and the construction and operation of similar parts will be understood from the above description and will not be further described with
detail.

In this embodiment, the inner container 209 is permanently attached to the lid 210, which has an outlet of fluid that can be connected to the spray gun and a fluid inlet to add paint to the reservoir. For example, the lid 210 may be attached to inner container 209 by Adhesive or welding.

This arrangement allows the construction of the Deposit is simplified compared to the previous embodiment. In particular, the outer container to receive the container 209 inside and the collar to secure the lid 210 is no longer required for mounting the tank and can be dispensed with same.

In this embodiment, the materials used for container 209 and lid 210 are similar to those of the previous embodiment. It will be understood, however, that this is not essential. In this way, the container 209 can be constructed to from any material that is tear resistant, to shatter or break, and crush it when it is extracting paint. For example, container 209 may be made of sheet metal and / or sheet metal can be incorporated in a plastic laminate to provide the characteristics required to container 209.

The lid assembly 210 and container 209 can having been previously filled with a liquid, and supplied to the user to fix it to the spray gun 1 through the tube 215 of the connector on the cover 210. Next, the tank is you can fill, removing plug 232, while still attached to the spray gun 1 through the fluid inlet. It can use pre-filling for liquids that can be packaged and Store without degrading until required. In this way, the pre-filling can be especially useful for liquids that are they can supply preparations for use (i.e. not require any modification to match the color with a existing color). For example, base layers of standard colors and / or primers or lacquers that can be supplied in a form not activated and activate (if necessary) by means suitable such as by exposure to a light source (ultraviolet) or electric power, when required.

Alternatively, the lid assembly 210 and container 209 can be supplied empty for the user to fill with liquid through the fluid inlet with plug 232 retired. This allows the user to use standard liquids or liquids that have been mixed especially to match a particular color Again, the deposit can be refilled, during its use, while it is fixed to the spray gun one.

In case the container assembly 209 and lid 210 is supplied empty, the container 209 can be crushed thereby reducing the space required for packaging and transport of the set by the manufacturer, and the space required to store the set until the end user requires it. In the event that the assembly is supplied and stored in a state crushed, container 209 can be returned to its original form before adding the chosen liquid.

In this embodiment, lid 210 and the container 209 are permanently insured with each other and the deposit is stable enough to fix it to the spray gun without No additional support. For some applications, however, it may be desirable or necessary, depending on the size and / or the Materials used for container 209, provide a support for container 209 when the reservoir is attached to the gun sprayer

Figures 18 and 19 show two cages of support 280 and 281 that can be used to support the tank when the container 209 is crushed. The cages 280, 281 are made of plastic material that combines the necessary resistance with lightness to facilitate the handling of the gun sprayer to which the tank with cage 280 is attached, 281. It will be understood, however, that others may be used materials.

In Figure 18, cage 280 provides support for the entire length of the container 209 'and has the shape of an open mesh that allows visual inspection of the tank when the container 209 'is crushed. In figure 19, cage 281 provides support for part of vessel length 209 'and It has the shape of a short tube that can be transparent to allow visual inspection of the tank when the container. It will be understood, however, that it can be used any suitable cage design that adequately supports the 209 'container. For example, the cage may comprise a plurality of leg portions extending down guiding the container to be crushed in the longitudinal direction.

In figures 18 and 19, cage 280, 281 is separated from lid 210 'and container 209' and is secured by means of an annular collar 282 that fits on said cover 210 '. Be understand, however, that the cage could be formed as a integral part of the lid 210 '.

It will also be understood that cage 280, 281 and the collar 282 are not limited to provisions in which the lid 210 'and container 209' are permanently fixed between yes. In this way, cage 280, 281 and collar 282 can be use in any of the provisions according to the first embodiment, in which the lid and the container are components independent to secure each other and provide support for the tank when the container is crushed.

Referring below to the figure 20, an alternative arrangement for permanently joining is shown the lid 210 '' and the container 209 '', in which a groove annular 240 is arranged on the underside of the lid 210 '' for receive flange 212 '' from container 209 ''. The 212 '' flange and the groove 240 are provided with interlocking formations complementary to seal lid 210 '' on container 209 '' and prevent container 209 '' from separating from lid 210 ''. This set can be carried out during manufacturing to supply of lid 210 '' and container 209 '' filled previously of liquid or voids, as described above. Alternatively, lid 210 '' and container 209 '' can be Supply separately for assembly by the user. This arrangement may be provided with a support cage for the container, as described above. The cage can be a independent component or be integrally formed with the lid 210``. For example, the outer wall of the groove 240 can extend axially to surround container 209 '' all or part of the length of the container 209 ''.

Referring to figures 21 to 24, shows a third embodiment of the present invention to add paint to a reservoir while attached to a gun sprayer For convenience, similar reference numbers in 300 series are used in all figures to indicate parts corresponding to previous embodiments, and construction and operation of similar parts will be understood from the description above and will not be described further with detail.

In this embodiment, the end wall of the lid 310 has a conical shape, and the connector tube 315 is offset with respect to the center of the lid 310 and extends at an angle with respect to the central longitudinal axis of the lid 310. This displaced arrangement allows to increase the size of the opening 330 if compared to the previous embodiments. As shown, the opening 330 has a diameter slightly smaller than half of the diameter of the lid 310. It will be understood, however, that the size of opening 330 can be modified with respect to that shown.

As will be appreciated, increase the size of the opening 330 allows faster filling / refilling of the tank formed by attaching lid 310 to container 309. In addition, it can be use a removable sock filter "by fall" along with opening 330 to filter paint Poured into the tank. As a consequence, there is no need to use a filter over the opening 314 of the tube 315 of the connector when the tank is connected to a spray gun.

In addition, as shown in Figure 24, it improves access to opening 330 when the reservoir is fixed to the spray gun 301, and the spray gun 310 is inverted to add paint to the tank by arrangement offset from tube 315 of the connector that extends at an angle with respect to the longitudinal axis of the opening 330. As a consequence, the opening 330 is far from the spray gun 301 and is You can put paint more easily into the tank through said opening 330 with the reservoir fixed to the gun sprayer This also contributes to faster filling of the deposit, with little risk of spillage.

Depending on the start / end positions
tion of the bayonet formations 316 to secure the deposit to the spray gun 301, the displaced arrangement of the tube 315 of the connector may result in the tank protruding from one side of the spray gun 301. This could have a detrimental effect on the Handling of the spray gun 301. In particular, the spray gun 301 may be unbalanced making its handling more uncomfortable and making access to spray more difficult, since the available space is restricted.

Consequently, bayonet formations 316 are arranged so that when the tank is connected to the spray gun 301 is aligned along the axis of spraying the spray gun 301. Thus, it will prevents imbalance because the tank protrudes by a side. Additionally, the inclination of the connector tube 315 with respect to the longitudinal axis of the tank, it can be chosen so that the tank is arranged at an optimum angle to the spray gun, to better meet the requirements of the job. In this way, you overcome or at least mitigate any detrimental effect, which results from the displaced disposition of the tube 315 of the connector, on the manipulation of the gun sprayer 301.

In this embodiment, the container 309 is permanently attached to cover 310 by adhesive, welding or any other suitable method, as described above in relationship with the second embodiment of the invention. It will be understood, however, that the advantages of displacing the tube 315 from the connector and increase the size of the filling opening 330 can be applied to any of the other lid / container combinations described in this memory. For example, the lid can be separated from container and secured by a collar as described in relationship with the first embodiment. In addition, it will be appreciated that the displaced arrangement of connector tube 315 and size Increased filling opening 330 can be applied to Any form of lid. For example, the lid can have a wall flat end, as shown in figures 8 to 17, or a wall extreme conical, as shown in figures 18 to 24.

Referring below to the figures 25 to 27, an alternative arrangement is shown to increase the filling opening size 330 'in lid 310' for the purpose of facilitate filling / refilling the tank according to the third embodiment of the invention. The tube 315 'of the connector is located at the apex of the conical end wall of the lid 310 ', aligned with the central longitudinal axis of said lid 310 '. How Consequently, the tank does not protrude from the side of the gun sprayer, regardless of the initial / final position of the 316 'bayonet formations to secure the deposit to the gun sprayer To adapt to the increased size of the opening of filled 330 'without restricting access when the tank is fixed to the spray gun, the mouth 331 'is arranged to make protruding the flange of the lid 310 'on one side. The wall of the mouth 331 'which makes the flange of the cover 310' protrude is formed with an angled portion 361 'that directs paint towards a 360 'substantially D-shaped opening and through it, leading into the tank at the base of the opening 330 '.

The lid 310 'can be permanently fixed to container 309 ', as described above, or it may be separated from container 309 'and secured by a collar properly shaped, as described previously.

Referring below to the figures 28 to 30, a fourth embodiment of the present invention is shown to add paint to a reservoir while attached to a gun sprayer For convenience, similar reference numbers in 400 series are used in all figures to indicate parts corresponding to previous embodiments and construction and operation of similar parts will be understood from the description above and will not be described further with detail.

In this embodiment, the inner container 409 it is housed in an inner container 408 to place the portion of the flange 412 on the outer end of said container 408. Cap 410 has an elongated skirt 413, cylindrical in shape, integral with the end wall of the lid 410. The free end of the skirt 413 is a push fit at the open end of the inner container 409 to catch the flange portion 412 of said container 409 between the end of the container 408 and a lip exterior 413A integral with said skirt 413.

The end wall of the lid 410 is shaped conical and is provided with tube 415 of the connector and the opening of Filling 430 to fill / refill the tank while it is connected to the spray gun, as described for the embodiment previous. In this embodiment, the mouth 415 of the connector is arranged on the central longitudinal axis of the lid 410, but it understand that the cover 410 may be provided with any of the provisions of the 416 mouth of the connector and the filling opening 430 described above.

As will be appreciated, the elongated skirt 413 Increase the volume of the tank and allow the gun sprayer be used for large paint jobs without having You repeatedly fill the tank with paint. In addition, the same combination of outer container 408 and inner container 409 se can be mounted with caps 410 that have different lengths of skirt 413, to produce deposits that have a range of different volumes Thus, the required volume deposit for a particular job it can be easily assembled by selecting the cover 410 having the appropriate skirt size 413 and mounting the selected lid 410 with the same container combination outer 408 and inner container 409. As a result, it is reduced the number of components required to produce a range of Deposits of different volume. More particularly, the use of 409 inner containers of different sizes than 408 outer containers of different sizes are required, so that manufacturing, supply, storage and the assembly of components to mount tanks of different volume.

In a modification (not shown), the opening filling 430 can be relocated relative to the end wall of the cover 410 and place on the skirt 413, in case the skirt length 413 allow. This may allow a easier access to filling opening 430 when the tank It is connected to the spray gun.

Referring below to the figure 31, the cover 410 with the elongated skirt 413 can be used by itself to provide a low volume tank for small repair work, for example repairs on the spot. This it can result in cost savings by reducing time necessary to carry out a repair and by reducing from two to one the number of disposable components required for the repair, in case the cover 410 can be used without the inner bowl 409.

A bored cover (not shown) can be use to close the open end of lid 410 with the elongated skirt 413.

Referring below to the figures 32 and 33, an alternative arrangement is shown to vary the volume of the tank, in which an independent cover 450 of cylindrical shape is disposed between the lid 410 'and the container 409 'interior.

As shown, the skirt cuts 413 'in the bottom side of cap 410 'is a push fit at one end of the cover 450 to place the outer edge of said cover 410 'in said end of the sheath 450. The other end of the sheath 450 is a thrust adjustment at the open end of inner container 409 ' to trap the flange portion 412 'of said container 409' between the end of the container 408 'and an outer lip 450A of the sheath 450. Lock collar 411 'can be applied so threaded with outer container 408 to secure cover 450 in relation to the inner container 410 '. Lock collar 411 'is connected through axially extending bands 451 to a retaining collar 452 that holds the independent cover 410 'to the sheath 450 when the locking collar is tightened 411 '.

As will be appreciated, the ends of the sheath 450 are shaped to collaborate with the inner 409 'container and the lid 410 ', so that the inner container 410' and the lid 409 'can be mounted with or without the cover 450 between them. Thus, the same combination of inner container 409 'and cover 410 'can be mounted with or without covers 450 of different length to provide deposits that have a range of different volumes

More particularly, the lid 410 'may be mounted directly to inner container 409 'in the event that the deposit only has to contain a small volume of painting. The same lid 410 'and the same inner container 409' they can also be mounted with a 450 sized sheath properly between them to provide a capable deposit of containing a larger volume of paint, as required.

As a result, a container size inside 409 ', lid 410' and outer container 408 'se can be used for mounting with different sheath sizes 450 to effects of producing any desired volume of the deposit. Of this mode, the volume of the deposit can be altered as desired using common components, which simplifies manufacturing, the supply, storage and assembly of the paint tank for a variety of different uses.

In the arrangement shown in figures 32 and 33, the cap 410 'is provided with the tube 415' of the connector and the filling opening 430 '. A modification of this provision is shown in figure 34, in which the filling opening 430 '' is has been placed again from the cover 410 '' to the wall of the cover 450 '' of the extension. This may allow easier access to the filling opening 430 '' when you want to add paint to the Deposit. Likewise, the manufacture of the lid is simplified 410``.

As will be seen below, this invention provides an apparatus for spraying a liquid that it has a tank that is able to crush connected to a gun sprayer, in which liquid can be added to the tank while attached to the spray gun. Other provisions of the fluid inlet to add liquid to the reservoir while is attached to the spray gun will be apparent to those experts in the art and are considered within the scope of this invention.

It will also be appreciated that the embodiments copies described herein are intended to illustrate the diverse range and application of the invention, and that they can use the characteristics of the embodiments so separately or in combination with any other characteristics of the same or different embodiments.

In addition, while considering that exemplary embodiments described and illustrated represent the best means currently known to the applicant, are will understand that the invention is not limited thereto and that They can make various modifications and improvements within reach of the invention as defined by the claims attached.

Finally, as used herein, The term "liquid" refers to all forms of materials that can flow applicable to a surface using a spray gun (whether or not intended to color the surface) including (without limitation) paints, primers, base layers, lacquers, varnishes and similar materials similar to paint, as well as other materials such as adhesives, caps, charges, plastes, powder coatings, explosive powders, abrasive mortars, mold release agents and cast iron trim applicable in atomized or non-atomized form depending on the properties and / or the intended application of the material, and the term "liquid" must be interpreted accordingly.

Claims (17)

1. A reservoir for a spray gun for the purpose of spraying a liquid, the reservoir having a fluid outlet (115; 215; 315; 415) adapted for a releasable connection to a spray gun (101; 301; 401) and an inlet of fluid (130; 230; 330; 430) to introduce liquid into the reservoir, the fluid outlet (115; 215; 315; 415) and the fluid inlet (130; 230; 330; 430) being arranged so that the fluid inlet (130; 230; 330; 430) is directly accessible when the fluid outlet (115; 215; 315; 415) is connected to the spray gun (101; 301; 401), in which the inlet of fluid (130; 230; 330; 430) has a removable seal (131; 231; 331; 431) that allows liquid to be added to the tank during use of the spray gun (101; 301; 401) without separating the gun tank sprayer (101; 301; 401), and the reservoir can be crushed when liquid is removed from it during use of the gun p ulverizadora (101; 301; 401), characterized in that the tank comprises a cover (110; 210; 310; 410) provided with the fluid outlet (115; 215; 315; 415) for connecting the tank to the spray gun (101; 301; 401). 2. The reservoir according to claim 1, characterized in that the fluid outlet (115; 215; 315; 415) and the fluid inlet (130; 230; 330; 430) are displaced from each other and are preferably directed towards a end of the tank 3. The reservoir according to claim 1 or claim 2, characterized in that the reservoir further comprises a portion that is capable of being crushed (109; 209; 309; 409) for the liquid to be supplied to the spray gun (101; 301; 401 ), wherein the portion that is capable of being crushed (109; 209; 309; 409) comprises a flexible container (109; 209; 309; 409) and the lid (110; 210; 310; 410) is arranged to close an opening in the container (109; 209; 309; 409), and in which the container (109; 209; 309; 409) and the lid are optionally disposable, and the lid can be removed from the container (109; 209; 309; 409) or permanently insure it. 4. The tank according to any one of claims 1 to 3, characterized in that the cover (110; 210; 310; 410) is adapted to releasably connect the fluid outlet (115; 215; 315; 415) to the spray gun . 5. The reservoir according to claim 3 or claim 4, characterized in that the fluid inlet (130; 230; 330 '; 430) and the fluid outlet (115; 215; 315'; 415) are arranged at one end of the reservoir, with the fluid outlet (115; 215; 315 '; 415) arranged in a central longitudinal axis of the reservoir, optionally at an angle to said axis, and the fluid inlet (130; 230; 330'; 430) displaced in relation thereto, for example located inwardly from a flange portion of the lid (110; 210; 410) or protruding outwardly from a flange portion of the lid (310 '). 6. The reservoir according to claim 3 or claim 4, characterized in that the fluid inlet (330) and the fluid outlet (315) are arranged at one end of the reservoir, with the fluid outlet (315) disposed offset relative to a central longitudinal axis of the reservoir, optionally at an angle with respect to said axis, and the fluid inlet (330) displaced relative thereto, for example located within a flange portion of the lid (310) or protruding outward of a flange portion of the lid. 7. The deposit according to claim 5 or the claim 6, wherein the fluid inlet (130; 204; 330 '; It is arranged on the cover (110; 210; 310; 410). 8. The tank according to any of claims 3 to 7, characterized in that means (108; 408; 280; 281) are provided for supporting the flexible container (109; 209; 409), for example a canister (108; 408) in which houses the flexible container (109; 409) or a cage (280; 281) arranged to surround the flexible container (209) at least part of its length. 9. The tank according to any of claims 3 to 8, characterized in that the cover (110; 410) has an end wall and a side wall (113; 413) extending from the end wall, the side wall (113) being arranged ; 413) to connect the lid (110; 410) to the flexible container (109; 409), with the fluid outlet (115; 415) formed in the end wall and the fluid inlet (130; 430) optionally formed in the extreme wall or side wall (413). 10. The tank according to any one of claims 3 to 8, characterized in that the tank includes a sheath (450) that extends between the lid (410) and the container (409) and connects both, with the fluid outlet (415 ) arranged in the cover (410) and the fluid inlet (430) arranged in the cover (410) or the sheath (450), and a set of covers (450) of different axial length is optionally provided, whereby the Tank volume can be altered by selecting and adjusting a selected case (450). 11. The tank according to any of the preceding claims, characterized in that the tank includes a filter (117; 217 '') for removing solid particles of the liquid supplied to the apparatus through the fluid outlet (115; 215), and the inlet of fluid (130; 230) is arranged to introduce liquid into the reservoir on the opposite side of the filter (117; 217 '') with respect to the fluid outlet (115; 215), for example the fluid inlet (130; 230 ; 330; 430) may comprise a mouth (131; 231; 331; 431) and the closure may comprise a removable screw cap (132; 232; 332; 432) applicable with the mouth (131; 231; 331; 431) to close the fluid inlet (130; 230; 330; 430). 12. The tank according to claim 1, characterized in that the tank includes a flexible container (109; 209; 309; 409) that is capable of being crushed when liquid is removed from the tank during operation of the spray gun (101; 301; 401 ). 13. The reservoir according to claim 12, characterized in that the fluid inlet (130; 230; 330; 430) is formed in the end wall or a side wall of the reservoir, for example the side wall may comprise an independent member (450) of the cover that extends between the lid (410 ';410'') and the flexible container (409'; 409 ''), or a skirt (113; 413) integral with the lid (110; 410) and which extends between the lid (110; 410) and the flexible container (109; 409). 14. The reservoir according to any of claims 1, 12 or 13, characterized in that the reservoir is a removable liner for a paint can (108; 408) and is optionally disposable after use. 15. The deposit according to any of the preceding claims, in combination with the gun sprayer connected to the fluid outlet (115; 215; 315; 415) of the deposit. 16. A combination according to claim 15, characterized in that the lid (110; 210; 310; 410) and the spray gun are provided with collaborative formations (116; 216; 316; 416), optionally applicable with a pushing / torsion, to securely release the tank to the spray gun. 17. The combination according to claim 15 or claim 16, characterized in that the spray gun is a gravity-fed or pressure-fed spray gun.