Liquid container system for a spray gun

• US 20060196891A1
• Filed: 12/14/2005
• Published: 09/07/2006
• Est. Priority Date: 12/16/2004
• Status: Active Grant

• Current Assignee: Saint-Gobain Abrasives Incorporated (Compagnie De Saint-Gobain), Saint-Gobain Abrasifs (Compagnie de Saint-Gobain SA)
• Original Assignee: Saint-Gobain Abrasives Incorporated (Compagnie De Saint-Gobain), Saint-Gobain Abrasifs (Compagnie de Saint-Gobain SA)
• Inventors: Anteski, David, Brunell, Robert A., Gerson, Ronald L.
• Granted Patent: US 8,127,963 B2
• Time in Patent Office: Days
• US Class Current: 222/386.5
• CPC Class Codes: B05B 15/40 Filters located upstream of the spraying outlets
• CPC Class Codes: B05B 7/2408 characterised by the container or its attachment means to the spray apparatus
• CPC Class Codes: B05B 7/2481 with a flexible container for liquid or other fluent material

Abstract

A liquid container system for a spray gun. The container system includes an outer cup, a collapsible liner for holding a liquid to be sprayed, and a lid for closing the liner. A mounting ring may be used in the cup to make locking engagement with the lid. A lip at the open end of the liner is supported by the mounting ring. A removable lid with a liquid outlet is inserted into the mounting ring, clamping the liner lip to the mounting ring and providing for leak-free operation of the system. Alternatively, the lid may include a cylindrical portion for making sealing engagement with the open end of the liner and projection threads for locking the cup. An adapter connects the liquid outlet of the lid to the spray gun. A collar may facilitate locking engagement of the adapter with the lid.

Claims

1. A liquid container assembly for a spray gun comprising:

a generally cylindrical cup including a bottom and an open top, the top including a cup lip, the cup lip including a cup lip recess;

a mounting ring, the ring including a peripheral flange and a ring recess in the flange, the peripheral flange for insertion into the cup lip recess;

a collapsible liner including a liner lip at an open end, the liner inserted through the mounting ring into the cup, the bottom side of the liner lip adapted for insertion into the ring recess; and

a removable lid for closing the top of the liner.

2. A container assembly according to claim 1, wherein the lid includes a liquid outlet and wherein the assembly further includes:

a generally cylindrical adapter, the adapter including a spray gun end and a cup end, the ends connected with a liquid-tight passageway, the spray gun end adapted for releasable engagement with a liquid inlet port of the spray gun, the cup end adapted for releasable engagement with the liquid outlet; and

a collar, the collar adapted to secure the cup end of the adapter to the liquid outlet.

3. A container assembly according to claim 2, wherein the lid includes at least one projection thread extending radially outwardly from the outlet and the collar includes collar threads on an interior face such that the collar secures the cup end of the adapter to the liquid outlet by mating with the at least one projection thread.

4. A container assembly according to claim 1 wherein the mounting ring peripheral flange and the cup lip recess are shaped such that mutual rotation is prevented after insertion of peripheral flange into the cup lip recess.

5. A container assembly according to claim 1 wherein the ring recess includes rib segments on an inner wall of the recess and the lid includes a plurality of tabs for cooperating with the ribs segments, attaching the lid to the mounting ring.

6. A container assembly according to claim 1, further including locking means for hindering removal of the lid from the outer cup.

7. A container assembly according to claim 1, wherein the locking means comprises hinges extending from the removable lid for making locking engagement with a flange extending out from the cup.

8. A container assembly according to claim 1, wherein the liner includes a rounded bottom.

9. A container assembly according to claim 1, wherein the liner includes generally vertically oriented pleats.

10. A container assembly according to claim 1, wherein the mounting ring, liner and lid form a liquid tight seal when assembled.

11. A container assembly according to claim 1, wherein the lid further comprises a bottom cylindrical projection and wherein an inner diameter of the mounting ring cooperates with the bottom cylindrical projection to compress against a sidewall of the liner when assembled for providing a liquid tight seal.

12. A container assembly according to claim 1, wherein the liner bottom is thinner than the liner side walls to promote inward collapse of the liner as fluid is expelled therefrom.

13. A container assembly according to claim 1, wherein the ratio of the thickness of the liner bottom to the liner sidewalls is approximately 1:

1.

14. A container assembly according to claim 1 wherein the sidewall of the cup includes at least one facet.

15. A container assembly according to claim 1, further including means for removably attaching the lid to the liner.

16. A container assembly according to claim 1, further including means for removably attaching the lid to the mounting ring.

18. A container assembly according to claim 16, further including locking means for hindering removal of the lid means from the cup.

20. A liquid container assembly according to claim 18, wherein the lid further includes a ribbed cylindrical portion and the liner attaches to the lid by sliding the open end of the liner over the ribbed cylindrical end of the lid.

21. A liquid container assembly according to claim 18, wherein the lid further includes a grooved cylindrical portion and the liner attaches to the lid by sliding the open end of the liner onto the grooved cylindrical portion.

23. A liquid container assembly according to claim 21, the assembly further including:

a cup for receiving the lid and liner, the cup including an open top, the lid releasably attached to the open top of the cup.

17. A liquid container assembly for a spray gun comprising:

a cup including a bottom and an open top, the top including a cup lip, the cup lip including a cup lip recess;

a mounting ring, the ring including a peripheral flange and a ring recess in the flange, the peripheral flange for insertion into the cup;

liner means, open at the top, for holding a liquid; and

lid means for closing the liner means.

19. A liquid container assembly for a spray gun comprising:

a cup including a bottom and an open top;

a removable lid for closing the top of the cup, the lid including a liquid outlet and at least one projection thread extending radially outwardly from the outlet; and

a collapsible liner for insertion into the cup, the liner including an open end releasably attached to the lid.

22. A liquid container assembly for a spray gun comprising:

a lid including a liquid outlet;

a generally cylindrical adapter, the adapter including a spray gun end and a lid end, the ends connected with a liquid-tight passageway, the spray gun end adapted for releasable engagement with a liquid inlet port of the spray gun, the lid end adapted for releasable engagement with the liquid outlet;

a collar, the collar releasably attaching the adapter to the lid by rotation of the collar with respect to the lid; and

a liner forming an enclosure with the lid.

24. A liquid container assembly according to claim 22, wherein the lid has a cylindrical portion in sealing engagement with the liner and has at least one thread for screwed engagement with the cup.

25. A liquid container assembly according to claim 22, further comprising a mounting ring for insertion into the open top of the cup and wherein the lid securely engages the mounting ring.

26. A liquid container assembly according to claim 22, wherein the collar is threaded.