Patent ID: 8640976

Claim:
A system, comprising: a spray gun, comprising: a body having a handle; an air inlet extending from the handle; a trigger coupled to the body by a pivot joint, wherein a distal end of the trigger is disposed in front of the handle; a liquid inlet extending from the body and disposed in front of the trigger; a needle valve coupled to the trigger and having a generally frusto-conical abutment surface, wherein the needle valve is configured to translate in response to movement of the trigger; a spray tip assembly, comprising: a fluid delivery tip section comprising a passage that receives a tip of the needle valve, wherein the passage is configured to seal with the generally frusto-conical abutment surface of the needle valve, and the passage is downstream from the liquid inlet; a fluid breakup section disposed within the fluid delivery tip section downstream from the passage, wherein the fluid breakup section comprises a plurality of internal passages tunneling directly from respective inlets disposed on a first side to respective outlets disposed on a second side of the fluid breakup section, the plurality of internal passages generally converge toward one another at a first angle and generally twist at a second angle, and the plurality of internal passages are configured to impart a swirling motion to a liquid flow; a region downstream from the plurality of internal passages and configured to receive swirling liquid from the plurality of passages; a liquid exit downstream from the region; and an air atomization cap having a plurality of air atomization orifices in fluid communication with the air inlet, wherein at least part of the air atomization cap is disposed downstream from the liquid exit.