Patent ID: 8127963

Claim:
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.