Apparatus and method for quickly disconnecting a wetted parts subassembly from a paint spray gun wherein the wetted parts subassembly includes a spray tip, pump cylinder and piston and paint cup components including a pump housing cylinder support carrying the pump cylinder and having a pair of protrusions...http://www.google.com.au/patents/US7891588?utm_source=gb-gplus-sharePatent US7891588 - Quick disconnect for wetted parts in a paint spray gun
