MULTI PART PLASTIC ASSEMBLY THAT SIMPLIFIES THE APPLICATION OF PRIMER SOLVENTS AND PLASTIC BONDING CEMENTS AND/OR AGENTS TO PLASTIC AND/OR PVC PIPING

Abstract

The present invention is a system and method facilitating the application of PVC primer/cement to the inner surfaces of PVC pipes, unions, joints, or connection sleeves, and to the outer surface of PVC pipes. The invention consists of a PVC primer/cement reservoir, a method of filing and pressurizing the reservoir, and forcing PVC primer or cement through a series of tubes and holes in the apparatus and into a foam applicator transferring PVC primer/cement onto the inner surface or onto the outer surface of a PVC union, sleeve, or pipe to a predetermined depth and thickness thus reducing waste of the PVC primer/cement and ensuring an even coating of PVC primer/cement and always applying the same consistent application of PVC primer/cement.

Claims

1. A system for applying PVC primer/cement to a PVC pipe, union, joint or connection sleeve such that the amount of PVC primer/cement applied to the outside or inside surfaces of said PVC pipe, union, joint or connection sleeve is of a uniform layer for the surface area to be covered by said PVC primer/cement, a PVC primer/cement reservoir container with an integral manually operated pump supplies said PVC primer/cement through a tube communicably coupling said integral manually operated pump to a handheld application applier containing a saturable foam filling, said system comprising the method steps of: a. said integral manually operated pump and said pump tube residing in said PVC reservoir container holding said PVC primer/cement communicably couples said PVC primer/cement reservoir container to said handheld application applier and pumps said PVC primer/cement from said PVC primer/cement reservoir container when said pump tube is manually depressed when said handheld application applier is pushed downward by a user, and b. said PVC primer/cement flows from said PVC primer/cement container through said pump tube into said handheld application applier and saturates said foam applicator with said PVC primer/cement, and c. if said foam applicator in said handheld application applier has a hole in its center whose inner diameter is the same as the outer diameter of said PVC pipe fitted into said hole in said foam applicator, and either said PVC pipe or said handheld application applier is twisted, said PVC primer/cement is applied to said outer surface of said PVC pipe, and d. if said foam applicator in said handheld application applier is a foam plug located in the center of said handheld applicator applier and said outer diameter of said foam plug is the same as the inner diameter of said PVC pipe, union, joint or connection sleeve fitted onto said foam plug, and either said PVC pipe, union, joint or connection sleeve or said handheld application applier is twisted, said PVC primer/cement is applied to said inner surface of said PVC pipe, union, joint or connection sleeve.

2. Any of the method steps of claim 1 where the thickness of said foam applicator with a hole in the center of said foam applicator contained in said handheld applicator is the same as the depth recommended by the manufacturer of said PVC pipe thus limiting the PVC primer/cement depth of the outer surface area of said PVC pipe receiving said PVC solvent/cement.

3. Any of the method steps of claim 1 where the thickness of said foam plug applicator in said handheld applicator is the same as the PVC primer/cement depth recommended by the manufacturer of said PVC pipe, union, joint or connection sleeve thus limiting the PVC primer/cement depth of the inner surface of said PVC pipe, joint, or union receiving said PVC solvent/cement.

4. A method for applying PVC primer/cement to a PVC pipe, union, joint, or connection sleeve such that the amount of PVC primer/cement applied to the outside or inside surfaces of said PVC pipe, union, joint, or connection sleeve is of a uniform layer for the surface area to be covered by said PVC primer/cement comprising: a PVC primer/cement reservoir container with an integral manually operated pump supplies said PVC primer/cement through a tube communicably coupling said integral manually operated pump to a handheld application applier containing a saturable foam filling, said method comprising: a. activating said manually operated pump to pump said PVC primer/cement from said PVC primer/cement reservoir container to said handheld application applier by depressing said handheld application applier and in turn said pump tube, and b. said PVC primer/cement flows from said activated manually operated pump through said pump tube into said handheld application applier saturating said saturable foam filling, and c. if said saturable foam filling contains a hole in the center of said saturable foam filling whose diameter is the same as the outer diameter of said PVC pipe fitted into said hole in said foam applicator, and either said PVC pipe or said handheld application applier containing said saturable foam filling is twisted, said PVC primer/cement is applied to said outer surface of said PVC pipe, and d. if said saturable foam filling is a circular foam plug in the center of said handheld application applier and if said circular foam plug diameter is the same as the inner diameter of said PVC pipe, union, joint, or connection sleeve, and said PVC pipe, union, joint, or connection sleeve is fitted over said circular foam plug, and either said PVC pipe, union, joint, or connection sleeve or said handheld application applier containing said saturable foam plug is twisted, said PVC primer/cement is applied to said inner surface of said PVC pipe, union, joint, or connection sleeve.

5. Any of the method steps of claim 4 where the thickness of said saturable foam filling with a hole in the said center of said saturable foam filling contained in said handheld applicator is the same as the depth recommended by the manufacturer of said PVC pipe thus limiting the PVC primer/cement depth of the outer surface area of said PVC pipe receiving said PVC solvent/cement.

6. Any of the method steps of claim 4 where the thickness of said circular foam plug in said handheld applicator is the same as the PVC primer/cement depth recommended by the manufacturer of said PVC pipe, union, joint, or connection sleeve thus limiting the PVC primer/cement depth of the inner surface of said PVC pipe, joint, or union receiving said PVC solvent/cement.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG. 1 is a side view depiction of the invention

[0018] FIG. 2 is a top view depiction of a foam disk with a center cavity for applying PVC primer or PVC cement to the outside of a PVC pipe.

[0019] FIG. 3 is a top view depiction of a foam plug applying PVC primer or PVC cement to the inside of a PVC joint sleeve.

[0020] FIG. 4 is a side view depiction of a liquid pump prior art.

[0021] FIG. 5 is a side view depiction of a liquid pump inside a PVC primer or PVC cement can or similar reservoir.

[0022] FIG. 6, is a side view depiction of the invention mounted on top of a PVC primer or PVC cement can with a liquid pump

[0023] FIG. 7, is a side view of the invention with a liquid pump inserted into the invention and a top view of a foam disk with a center cavity

[0024] FIG. 8 is a side view of the invention with a liquid pump inserted into the invention and a top view of a foam plug for applying PVC primer or PVC cement to the inside of a PVC joint sleeve

DETAILED DESCRIPTION OF THE INVENTION

[0025] Objects and advantages of the present invention will become apparent to those skilled in the art upon reading this description in conjunction with the accompanying drawings, in which like reference numerals have been used to designate like or analogous elements.

[0026] Now referencing FIG. 1 where 10 depicts and external view of the reservoir and pump assembly of the invention. In this depiction, reservoir body 12 holds a volume of primer or cement. Reservoir cap 14 is screwed onto a threaded fixture of reservoir body 12 (see FIG. 5). Spring loaded assembly top 16 and spring loaded assembly bottom 18 contain a coil spring keeping the top and bottom portions of the assembly separated. Lift tube holder 20, when pressed moves life tube 52 downward into pump mechanism 54 (see FIGS. 4, 5, and 6). A check value (not shown) in the body of pump mechanism 54 allows lift tube 52 to partly fill with whatever fluid is in reservoir body. The action of compressing spring loaded assembly top compresses the spring and when the user releases pressure on lift tube holder 20, life tube 52 raises releasing pressure on lift tube pump which closes the check value (not shown) in the body of pump mechanism 54 allowing pump mechanism 54 to refill with primer or cement.

[0027] Now referencing FIG. 2 where 36 depicts a foam outside dimension applicator 32. Foam outside dimension applicator 32 contains a hole into which a plastic pipe is inserted. Foam outside dimension applicator 32 will be saturated with primer or cement and a pipe inserted into hole 36 will have its outside surface coated with primer or cement from the saturated foam outside dimension applicator. Foam applicator 32 is contained within foam applicator 34.

[0028] Now referencing FIG. 3 where 40 depicts a foam inside dimension applicator 44. When Foam ID applicator 44 is inserted into a plastic pipe, its inner wall be coated with primer or cement from the saturated foam ID applicator 44. Foam ID applicator 44 is contained within foam applicator 34.

[0029] Now referencing FIG. 4 where 50 depicts the lift tube pump mechanism, and intake tube assembly consisting of lift tube 52, pump mechanism 54, and pump intake tube 56. When lift tube 52 is pressed downward it moves into pump mechanism 54 (see FIGS. 4, 5, and 6). A check value (not shown) in the outside dimension of pump mechanism 54 allows lift tube 52 to partly fill with fluid in its reservoir body 12. When life tube 52 raises, pressure on lift tube pump mechanism 54 closes the check value (not shown) in the body of pump mechanism 54 allowing pump mechanism 54 to refill with primer or cement via pump mechanism intake tube 56.

[0030] Now referencing FIG. 5 where 60 depicts a cutaway view of reservoir body 12 with a threaded top 62 which secures reservoir cap 14 (FIG. 6). Lift tube 52 is shown connected to pump mechanism 54 which is connected to pump mechanism intake tube 56. The reciprocating action of lift tube 52, pump mechanism 54, and pump mechanism intake tube 56 is described above for FIGS. 1 and 4.

[0031] Now referencing FIG. 6 where 70 depicts a side cut away view of the lift tube 52, and pump mechanism 54 and pump mechanism intake tube 56. In this depiction, reservoir body 12 holds a volume of primer or cement. Reservoir cap 14 is screwed onto a threaded fixture of reservoir body 12 (see FIG. 5). Spring loaded assembly top 16 and spring loaded assembly bottom 18 contain a coil spring keeping the top and bottom portions of the assembly separated. Lift tube holder 20, when pressed moves lift tube 52 downward into pump mechanism 54 (see FIGS. 4, 5, and 6). A check value (not shown) in the body of pump mechanism 54 allows lift tube 52 to partly fill with PVC primer or PVC cement from reservoir body 12. The action of compressing spring loaded assembly top compresses the spring and when the user releases pressure on lift tube holder 20, lift tube 52 raises releasing pressure on lift tube pump which closes the check value (not shown) in the body of pump mechanism 54 allowing pump mechanism 54 to refill with primer or cement.

[0032] Now referencing FIG. 7 where 80 depicts a view of the lift tube 52 and pump mechanism 54 and pump mechanism intake tube 56. This assembly is shown connected to the assembly containing foam outside dimension applicator 32 and inside foam applicator housing 34. As foam applicator housing 34 is repeatedly pressed downward and allowed to return upward, PVC primer or cement will be pumped via pumping mechanism 54 to reservoir 84 and into foam applicator housing 34 via holes 86 saturating foam outside dimension applicator 32.

[0033] Now referencing FIG. 8 where 90 depicts a view of the lift tube 52 and pump mechanism 54 and pump mechanism intake tube 56. This assembly is shown connected to the assembly containing the foam inside diameter applicator 44 inside foam applicator housing 34. As foam applicator housing 34 is repeatedly pressed downward and allowed to return upward, primer or cement will be pumped via pumping mechanism 54 to reservoir 84 and into foam applicator 34 via hole 86 saturating foam ID applicator 44.

[0034] The inventor intends that only those claims which use the words “means for” are intended to be interpreted under 35 USC 112, sixth paragraph. Moreover, no limitations from the specification are intended to be read into any claims, unless those limitations are expressly included in the claims.

[0035] Where a specific numerical value is mentioned herein, it should be considered that the value may be increased or decreased by 20%, while still staying within the teachings of the present application, unless some different range is specifically mentioned. Where a specified logical sense is used, the opposite logical sense is also intended to be encompassed.

[0036] The previous description of the disclosed exemplary embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these exemplary embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.