Liquid container system for a spray gun

• US 8,127,963 B2
• Filed: 12/14/2005
• Issued: 03/06/2012
• 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: Gerson, Ronald L., Brunell, Robert A., Anteski, David
• Primary Examiner(s): Stashick, Anthony
• Assistant Examiner(s): MCKINLEY, CHRISTOPHER BRIAN
• Application Number:
  US11/302,970
• Publication Number:
  US 20060196891A1
• Time in Patent Office: 2,274 Days
• Field of Search: 239/345, 239/376, 239/377, 220/784, 220/495.08, 220/495.02, 220/495.11, 222/386.5, 222/92, 222/105
• US Class Current: 220/495.02
• 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 having 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, the peripheral flange insertable into the cup lip recess;

a collapsible liner having a liner lip at an open end, the liner insertable through the mounting ring such that the bottom side of the liner lip is received and supported by the ring recess, wherein the liner is collapsible during use as liquid is removed from the liner; and

a removable lid for closing the top of the liner, wherein the ring recess includes rib segments on an inner wall of the ring recess and the lid includes a plurality of tabs, the tabs engageable with the rib segments to threadably attach the lid to the mounting ring, and the mounting ring peripheral flange and the cup lip recess are shaped such that relative rotation of the mounting ring and cup is prevented after insertion of the peripheral flange into the cup lip recess.

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 having a spray gun end and a cup end, the ends connected with a liquid-tight passageway, the spray gun end releasably engageable with a liquid inlet port of the spray gun, the cup end releasably engageable with the liquid outlet of the lid; and

a collar releasably securing 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 of the lid by mating with the at least one projection thread.

4. A container assembly according to claim 1, wherein the lid includes a locking mechanism to releasably clip the lid to the cup.

5. A container assembly according to claim 4, wherein the locking mechanism comprises hinges extending from the removable lid that lock with a flange of the cup.

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

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

8. A container assembly according to claim 1, wherein the liner and lid form a liquid tight seal when the lid is threaded into the mounting ring.

9. 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.

10. 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 withdrawn therefrom.

11. 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.

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

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

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

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

a cup having a bottom and an open top, the top including a cup lip, the cup lip including a cup lip recess formed on an inner periphery of the cup lip;

a mounting ring, the ring including a peripheral flange and a ring recess, the peripheral flange insertable into the cup lip recess;

a liner having an open top, for holding a liquid, wherein the liner is collapsible during use as the liquid is removed from the liner; and

a lid for closing the open top of the liner,

wherein the lid has at least one thread for threadable engagement with the mounting ring, and

the mounting ring peripheral flange and the cup lip recess are shaped such that relative rotation of the mounting ring and cup is prevented after insertion of the peripheral flange into the cup lip recess.

16. A container assembly according to claim 15, further including a locking mechanism to releasably attach the lid to the cup.

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

a cup having a bottom and an open top;

a mounting ring disposed within an interior of the cup proximate the open top;

a collapsible liner having an opening, the liner insertable through the mounting ring and supported thereby within the cup such that no portion of the liner contacts the cup, wherein the liner is collapsible during use as the liquid is removed from the liner; and

a lid removably covering the opening in the liner,

wherein the lid has at least one thread for threadable engagement with the mounting ring, and

the mounting ring and the cup are configured such that relative rotation of the mounting ring and the cup is prevented after insertion of the mounting ring into the cup.

18. A liquid container assembly for a gravity feed 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 releaseably engageable with a liquid inlet port of the spray gun, the lid end releaseably coupleable 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;

a liner forming an enclosure with the lid, and

a cup configured to receive the liner,

wherein the lid seals with the liner and wherein the lid has at least one thread for threadable engagement with a mounting ring disposed within an open top of the cup, and the mounting ring and the cup are configured such that rotation of the mounting ring with respect to the cup is prevented after insertion of the mounting ring into the cup and the liquid container assembly is adapted to allow liquid to flow therefrom in an inverted position such that the liquid container assembly is disposed above the spray gun during use.

19. A liquid container assembly according to claim 18, 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.

20. A liquid container assembly according to claim 18, wherein the collar is threaded.

21. A liquid-tight container assembly, comprising:

a collapsible liner having a liner body defined by an open top, a peripheral sidewall and a closed bottom, said open top defined by an outwardly projecting peripheral lip, wherein the liner is collapsible during use;

a lid covering said open top of said liner, said lid having a peripheral flange sized to extend over said peripheral lip of said liner, said lid further having outwardly projecting tabs, said lid further having an outlet;

a ring having an annular recess defining an opening, said liner body extending through said opening, said peripheral lip of said liner received and supported by said annular recess, said ring further having inwardly projecting threads cooperating with said outwardly projecting tabs of said lid to secure said lid, liner and ring together as a unitized lid-liner-ring assembly; and

an outer cup within which the unitized lid-liner-ring assembly is received,

wherein the ring and the outer cup are configured such that rotation of the ring with respect to the outer cup is prevented after insertion of the ring into the outer cup,

rotation of said lid with respect to said ring causes an underside of the peripheral flange of the lid to be forced downwardly against a top surface of the peripheral lip of the liner thereby creating a liquid tight seal between the lid and the liner, and

said lid includes a filter.

22. The liquid-tight container of claim 21 wherein said outer cup includes a cup lip recess upon which said ring is supported such that said liner is suspended within said outer cup from said ring.

23. The liquid-tight container assembly of claim 21 wherein said lid includes a locking mechanism for releasably securing said unitized lid-liner-ring assembly within said outer cup.

24. The liquid-tight container assembly of claim 21 wherein said unitized lid-liner-ring assembly is removable from said outer cup.

25. A liquid container assembly for a spray gun, comprising:

a generally cylindrical cup having 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, the

peripheral flange insertable into the cup lip recess;

a collapsible liner having a liner lip at an open end, the liner insertable through the mounting ring such that the bottom side of the liner lip is received and supported by the ring recess;

a removable lid for closing the top of the liner, wherein the ring recess includes rib segments on an inner wall of the ring recess and the lid includes a plurality of tabs, the tabs engageable with the rib segments to threadably attach the lid to the mounting ring, and the mounting ring peripheral flange and the cup lip recess are shaped such that relative rotation of the mounting ring and cup is prevented after insertion of the peripheral flange into the cup lip recess;

a generally cylindrical adapter, the adapter having a spray gun end and a cup end, the ends connected with a liquid-tight passageway, the spray gun end releasably engageable with a liquid inlet port of the spray gun, the cup end releasably engageable with the liquid outlet of the lid; and

a collar releasably securing the cup end of the adapter to the liquid outlet.

26. A container assembly according to claim 25, 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 of the lid by mating with the at least one projection thread.