Patent ID: 7337990

Claim:
An attachment for coupling an inlet of an air spray gun to an outlet of a compressed air supply hose, said attachment comprising: an attachment body having a main air passage therein extending along a main air passage axis; a control valve disposed in said main air passage to adjust an air flow rate through said main air passage; a gun coupling configured to be coupled to the inlet of the air spray gun, said gun coupling being mounted to said attachment body and having an outlet air passage therein connected to said main air passage and arranged to allow passage of air from said main air passage to the inlet of the air spray gun; a hose coupling configured to be coupled to the outlet of the compressed air supply hose, said hose coupling being mounted to said attachment body and having an inlet air passage therein connected to said main air passage and arranged to allow passage of air from the compressed air supply hose to said main air passage; a pressure gauge mounted to said attachment body and fluidically coupled via a fluid coupling to said main air passage; and a rotary joint rotatably mounting said hose coupling to said attachment body such that an angle between an inlet air passage axis of said inlet air passage of said hose coupling and an outlet air passage axis of said outlet air passage of said gun coupling is variable; wherein said pressure gauge has a display surface, and said pressure gauge is fixedly mounted to said attachment body in such a manner as to form an obtuse angle between said display surface and said outlet air passage axis and so that said display surface is generally parallel with a radiating direction in which said fluid coupling of said pressure gauge extends from said main air passage; said control valve includes a valve body disposed in said main air passage and a valve knob exposed to an outside of said attachment body and coupled to said valve body for adjusting a position of said valve body in said main air passage of said attachment body; wherein said valve knob is rotatable about said main air passage axis; wherein said pressure gauge is coupled to said main air passage in a radiating manner with respect to said main air passage axis; and wherein said outlet air passage axis and said inlet air passage axis extend in a radiating direction from said main air passage axis.