Abstract: A connector system for attaching a liquid container to a spray gun. The connector system includes a lid with a liquid outlet and an adapter for releasably connecting the outlet with the liquid inlet port of a spray gun. The lid includes interlocking tab assemblies for releasably attaching the adapter to the lid. Each tab assembly includes two tabs, with one tab adapted to secure the adapter to the lid when the tabs are interlocked. The connector system combines with an outer cup, a ring for insertion into the mouth of the cup and a collapsible liner for insertion into the ring to form a liquid container system. The ring includes internal threads or segments that cooperate with a peripheral flange on the lid to lock the lid to the ring, securing the lip of the liner. The lid includes a flexible gasket to form a liquid tight seal with the liner. The lid-liner-ring thus forms a liquid tight unit that may be inserted into and removed from the outer cup while containing a fluid such as paint.

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.