HU226176B1 - Paint can - Google Patents

Description

FIELD OF THE INVENTION The present invention relates to a canister for the application of a brushable coating composition having a volume greater than 0.2 liters which, despite its large size, can be conveniently held in the hands of an adult. The can of the invention is large enough to hold any paint, varnish, varnish, wood stain or other coating composition that is usually applied with large (usually at least 20 mm wide and at least 5 mm thick) paint brushes at ambient temperature (e.g. -40 ° C) on surfaces in buildings. These preparations are often applied by amateurs, ie DIYers. For the sake of simplicity, these cans are generally referred to herein as "paint cans," even though they are also suitable for storing other brushable coating compositions.

Artistic paints, vehicle refinishes, nail polishes and other special purpose coatings, usually in relatively small volumes, are usually sold in small tubes or jars with screw caps; in these cases the lid is held lockable by the connection of the thread and the thread surrounding the opening of the tube or crucible. Such a tube is described, for example, in U.S. Patent No. 835,862 published in 1958. British Patent Specification, which also discloses a solution where a circular brush wiper is located inside the tube below the rim of the tube opening. Threaded lids on small tubes or small jars are easy to handle for amateurs as long as the tube or jar is small. Even larger size paint cans (e.g., larger than 0.2 liters) have been tried to be fitted with a screw cap, but these solutions have never worked in practice, because when the screw threads become clogged with dried paint, the cap can only be very difficult to unscrew or remove. when the kettle is difficult to hold. All building paint manufacturers who have attempted to introduce screw threaded covers for larger paint cans have always returned quickly to the use of tightly fitting push-on flange covers, despite the need for a relatively sharp tool such as a screwdriver to open these covers. However, less experienced DIYers are reluctant to search for and use a sharp tool just to open a paint can, especially if they have previously been injured by slipping an incorrectly installed sharp tool (such as a screwdriver).

The use of screw caps on traditional large paint cans has also been unsuccessful because the larger the can, the more likely it is that the DIYer will apply too much paint to the brush and the use of an over-filled paint brush will often cause clogs. Overfilling the brush with paint can be due to the fact that the larger volume and volume of paint used to paint the surface of the building, and more specifically the amount of paint applied by the brush, does not allow the diver to properly estimate the amount of paint that can be filled. Whatever the explanation, however, it is practical for DIYers to remove the brush from the can during painting and to remove the excess paint by wiping the brush to the rim of the can opening. At least a portion of the paint so removed flows from the flange into the space that holds the lid when the can is closed. This problem is disclosed in U.S. Patent No. 5,855,304. can be eliminated using the paint cans described in U.S. Pat. If the lid receptacle on the toner jug is equipped with a screw thread for attaching a screw cap, the ink enters into the gaps between the threads and hardens or "dries". If the ink dries before replacing the screw cover, the dried ink will break the threads and prevent or make it difficult to screw back the cover. Worse still, the paint dries after screwing the lid back on; the dried ink then glues the screw thread of the lid to the thread around the opening, which makes it very difficult or even impossible to reopen the can. Because of the above, threaded lids are not considered suitable for use on large paint cans, like those used for building paint containers.

Careful observation of the work of the DIYers also indicated that the DIYers, in addition to overfilling the brushes, prefer to keep the dipped brush that is not being used in the position of the brush opening, with the bristles bearing the paint resting on the rim of the opening. This greatly increases the likelihood of dye from the bristles entering the flange and then from there to areas of space that catch the lid when it is reclosed.

It is an object of the present invention to provide a large canister for storing a brushable coating composition that is more conveniently held than conventional canisters. This allows the user to more easily control the amount of coating composition applied to the brush, thereby reducing the chance of overfilling the brush.

The invention thus relates to a large canister (e.g., a paint can) for use in brushable compositions having a volume greater than 0.2 liters and having a side wall and an opening with a lid. A portion of the sidewall of the can according to the invention has an angularly driven concave groove formed by two mutually curved end faces extending towards the inside of the can, which faces meet along a substantially horizontally angled driving portion; and a belt portion running along the side wall is formed in an adjacent portion of the can wall sidewall, rising vertically from the edge portion. The concave groove and belt make the kettle comfortable to hold in the hands of an adult.

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Most preferably, the present invention is capable of forming cans having a volume of 0.2 to 1.5 liters; cans of this size can be handled very comfortably by adults so they can better control the load on the paint brush, thus reducing the risk of overfilling.

The present invention also relates to a combination of a can and a screw threaded cap for sealing the can opening. This combination may particularly advantageously comprise a brushable coating composition such as paint, varnish, brush or wood stain.

The can according to the invention can also be formed with a brush towel fixed in the can. For example, the brush towel is disclosed in U.S. Patent No. 5,855,083. U.S. Patent 4,644,083; European Patent Publication or Publication No. 1,243,443. European Patent Specification.

The concave groove formed on the sidewall of the can according to the invention, in other words a recessed groove or recessed groove, provides the user with a good grip for holding the can and, in the case of brush wipes, allows the user to reach the edge of the brush wipe. A suitable groove comprises an angled fractured face formed by two faces facing each other, inclined at an angle to the inside of the can, and thus forming an angled edge. For brush wipes, if the distal edge of the brush wiper includes smaller and larger sections of curvature (e.g., elliptical), it is preferable that the angle of the angled edge portion at least partially follows the curvature of the greater curvature section. In particular, if the edge of the brushbrush is elliptical, it is preferable that the angle of the angled edge portion is substantially parallel to the tangent of the elliptical brushbrush edge at the ends of the smaller diameter of the brushbrush edge. When the groove is sized to accommodate a human thumb comfortably, the user automatically holds the brush breaker in a well-fitting position by holding the can between the fingers and the thumb inserted into the groove. This favorable fit results in deletion not by displacements perpendicular to the user's position, but by displacements towards and away from the user. These shifts make the deletion process very controllable. Preferably, the length of the angled edge portion is 30 to 75 mm. The angled edge portion may preferably be curved.

The top face of the top face plate also serves as a brush holder, so you don't have to place the overfilled but unused brush on the opening flange. For this purpose, it is advantageous for the top face plate to be inclined at an angle of 20-50 ° from the horizontal, which provides good support and at the same time allows the paint to flow back into the can.

To further facilitate gripping and moving of the can, the can has a circumferentially running belt portion which preferably extends over 40-75% of the circumference of the can. The waistband can be scaled so that it can comfortably accommodate human fingers. Alternatively, the waistband may be dimensioned to accommodate a thumb, and at the same time the groove may be dimensioned to accommodate other fingers. In a preferred embodiment, the waistband is formed around a curved line extending vertically in the can, allowing the gripping fingers to be placed slightly above the thumb. Preferably, the waist portion is formed to be connected to the angled portion of the can.

It is advantageous if the side wall of the can leads to an opening with a thread, which can be closed with a properly fitting lid with a thread. If the canister has such a thread and the canister is also provided with a brush wiper, it is advantageous for the brush wiper to end at a remote wiper edge. This reduces the risk of paint splashing on the opening flange, which could affect the threads. In a further preferred embodiment, the wipe edge of the brush wiper completely surrounds the entire circumference of the aperture so that, regardless of the relative position of the can and the user, a certain degree of wiping effect occurs in all cases.

In a preferred embodiment, the brush wiper blade should have sections of different curvature. The high curvature section is advantageous for erasing bristles at the corners of angular brushes, while the smaller curvature section is preferred for erasing side bristles. The shape of the brush wiper may generally be elliptical or semi-elliptical. The elliptical shape allows greater distance from the aperture in areas where the front and back sides of the overflow brush are most likely to be wiped. A further advantage of the elliptical shape is that it has a relatively sharp curve at the ends of the larger diameter, which is very suitable for wiping off the bristles on the corners of the brushes and can also serve as a flange for deflecting paint from the can. The semi-elliptical shape in the opening is less obtrusive, so wider brushes than this shape can be inserted into the opening.

Preferably, the brush wiper is provided on a downward slope of the can. This sloping design facilitates the return of the removed paint back to the can and, on the other hand, provides a clear path for the return paint from the sidewall. The angle of inclination is preferably 20-60 ° with respect to the horizontal.

The brush wiper can also be formed as a separate component which can be inserted into the opening, for example, by squeezing, snaping or imprinting and then glued if necessary. Alternatively, the brush wiper may be formed in an injection / blow molding sequence for forming the rest of the can. In this case, the injection molding step can be used to precisely form the opening and the threads, while the adherent blow molding can then be used to form the lower part of the can. If the lid and its threads are made by precision injection molding, a very good fluid-tight fit can be achieved by screwing the lid onto the can. Precision injection molding also allows for precise control of the thickness of the blow molding, so that the thickness can be adjusted according to

EN 226 176 mas1 The extent to which the various parts of the blowing mass will be subjected to stretching during subsequent blowing.

The opening, once formed by injection molding, can be cooled together with the corresponding threads until the shape is achieved. This part of the permanent shape is then no longer reheated because it is not involved in the blasting operation. This means that if the opening is formed together with a contiguous, inwardly extending shoulder, during cooling, the shoulder may form a defining surface for a portion of the blow molding. At this point, a portion of the blower mass can be blown back onto the shoulder to form a brush towel.

Cans can be molded from a wide range of thermoplastic materials. Various plastics have been found to be preferred, including polyamides, polyethylenes, polypropylenes, butadiene-styrene polyesters and polyethylene terephthalate. Particularly preferred are crystalline thermoplastic materials which can be arranged during the blasting operation.

Further details and preferred embodiments of the invention will now be described in more detail with reference to the drawings, with reference to embodiments. Referring to the drawings, Figure 1 is a perspective view of an embodiment of the can according to the invention; Figure 2 is a rear view of the can of Figure 1;

Figure 3 is a front view of the can of Figure 1;

Figure 4 is a side view of the can of Figure 1;

Figure 5 is a perspective view of a can of the same type as that shown in Figure 1, but with a brush towel, without its lid, on a slightly smaller scale than the one used in Figure 1, in a tilted position to illustrate the concave portion;

Figure 6 is a plan view of the can of Figure 5 for a better illustration of the brush towel in the can;

Figure 7 is a perspective view of a lid for use with the cans of the invention;

Figure 8 is a cross-sectional view of the cover shown in Figure 7 in line B-B;

Figure 9 is a plan view of a brush towel other than that shown in Figure 6;

Figure 10 is a sectional view of a brush towel other than that shown in Figure 6.

1-5. Fig. 3A illustrates a paint can 31 for receiving 0.5 liters of paint. As shown in Figure 5, the can has an opening 2 defined by a cylindrical inner surface 3 and a cylindrical outer surface 4. On the outer surface 4 there are threaded threads 5, which are dimensioned so that they can be connected to the threads 6 formed on the inside of the threaded cover 7 shown in FIG. By attaching the threads 5 and 6, the threaded cover 7 can be secured to the can 31 to seal the opening 2. The can 31 also has a circumferential rib 8 which serves as a stop to stop the lid and prevent the risk of clogging from being overstretched.

In the embodiment shown in Fig. 5, the brush wiper 9 is located circumferentially inside the opening 2, inwardly of the opening 2, and extends at an angle of 50 ° to the horizontal and terminates at the distal edge of the brush wiper 10. The brush edge 10 is spaced apart inwardly from the inner surface 3 of the opening 2. This spacing ensures that the brush erasure operation performed by the brush wiper 10 is always carried out away from the inner surface 3 and further away from the outer surface 4 and the threads 5 receiving the cover 7 during closing. This remote arrangement apparently eliminates any risk of contamination of the exterior surface 4 and the threads 5 with the paint wiped off by the brush brush edge 10. Therefore, the lid 7 can be easily screwed onto and unscrewed from the can 31; the risk of clogging is low.

As shown in Fig. 6, the elliptical brush wiper edge 10 has a small curvature portion 10a useful for wiping the front and back surfaces formed by rows of angular brushes; it also has a sharply angled section 10b, which is useful for wiping off the bristles at the corners and edges of the brush. The highly curved section 10b also has an edge-like effect when paint is poured from the canister 31 so that the flow of paint can be diverted during casting.

The inward and downwardly extending design of the brush wiper 9 facilitates the return of the paint wiped from the brush to the can 31.

The can 31 is typically made by combining injection molding and blow molding; the course of which is described in U.S. Patent No. 1,243,443. European Patent Specification.

1 and 3-5. As shown in FIGS. 1 to 4, a concave groove 32 is provided on the side wall 37 of the can 31, which includes two partially elliptical front panels 33 and 34 connected at an angle to one another along the line 35 of the drive portion. In the embodiment shown in Fig. 5, the angular drive portion 35 has a line approximately parallel to the tang at the end of the smaller diameter of the elliptical brush blade 10,

Figure 5 is a line depicted with C-C. The angled drive portion 35 is 60 mm long and is dimensioned to fit snugly on the human thumb.

The special design of the side wall 37 allows the user to position the can 31 so that the small curvature portion 10a of the brush wiper 10 is as close as possible to the square paint brushes when wiping the smooth surfaces. This favorable fit facilitates the effective removal of excess paint from the brush, thereby reducing the risk of the paint being dropped from the brush into the threads 5 when the brush is pulled out of the can.

The cans 31 also have a partially circular belt portion 36 extending 75% of the circumference of the cans 31.

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The waistband portion 36 is also dimensioned to fit snugly on human fingers when the user 31 holds the canister between the fingers and thumb. The angled edge 35 (and consequently the section 10a of the brush wiper 10) in the natural holding position of the can 31 thus reaches a position parallel to the user of the can 31 so that the most convenient brush wipe is not moving perpendicular to the user movements that make the deletion operation more controllable.

Figures 1 and 2 illustrate an embodiment where the line of descent of the waist 36 is curved in a vertical plane, i.e., the line of descent of the waist 36 wraps around the sidewall 37 starting at two points starting at two points meeting the angled edge 35 and vertically with the horizontal line of the edge 35 rising upwards. This is consistent with the fact that users usually prefer the grip when the middle part of their gripping fingers is slightly above the thumb.

Figure 7 illustrates a precision injection molding lid 7 for canister 31. Figure 8 illustrates the threads 6 formed inside the cover 7.

The upper portion 38 of the inner surface 32 of the concave butter 32 formed on the side wall 37 also serves as a brush holder, i.e., with the bristles of the brush that is not being used, can be turned on the inside of the can 31. This further reduces the likelihood of paint contamination of the threads 5 and 6 by providing a possibility to place unused paint-filled brushes other than the flange of the opening 2. The top face 34 deflects 45 ° from the horizontal.

Figure 9 illustrates another embodiment of the brush wiper 9 of Figure 6. In the case presented here, the brush edge 10c is concentric with the inner surface 3 of the opening 2, which gives the brush 9 a semi-elliptical shape. This semi-elliptical shape also allows for wider brushes to be inserted into the slot 2.

Figure 10 illustrates another embodiment of the brush wiper 9 shown in Figure 9. In the case described here, the brush wiper 9 is formed as a separate part from the rest of the can 31, which can be inserted into the opening 2 so that its outer surface 9a lies on the inner surface 3 of the opening 2.

Claims (9)

PATENT CLAIMS A large can for brush application coating compositions, preferably paint, varnish, lubricant or wood putty, having a volume greater than 0.2 liters and having a sidewall (37) and an opening (2) which can be closed by a lid (7), characterized in that: the can (31) having a concave groove (32) and a belt portion (36) for comfortably holding the can (31) in the hands of an adult, wherein the concave groove (32) extends over a portion of the sidewall (37) of the can (31) ), two mutually curved end faces (33, 34) that meet one another and which are substantially horizontally disposed along an angularly curved edge portion (35), and the belt portion (36) is adjacent a portion of the sidewall (37). rising upwardly from the edge portion (35) and running along the side wall (37). The can according to claim 1, characterized in that the waist portion (36) is formed on the can (31) in a circumferentially upwardly curved line, allowing the gripping fingers to be placed slightly above the thumb. The can according to claim 1 or 2, characterized in that the belt portion (36) runs along 40-75% of the circumference of the can (31). A can according to any one of the preceding claims, characterized in that the waist portion (36) is formed in connection with an angled portion of the can (31). Jug according to any one of the preceding claims, characterized in that the mutually bent front faces (33, 34) are partially elliptical. Cans according to any one of the preceding claims, characterized in that the angled edge portion (35) is curved. Cans according to any one of the preceding claims, characterized in that the angled edge portion (35) has a length of 30 to 75 mm. Cans according to any one of the preceding claims, characterized in that the opening (2) connected to the side wall (37) of the cans (31) is provided with a thread (5) which is lockable by a cover (7) with a suitable thread (6). The can according to claim 8, characterized in that it is combined with a lid (7) with a thread (6).