초록 ▼

A spray gun configured with a roiling wall diaphragm piston and vented piston cylinder connecting the needle to the needle actuator and isolating the liquid chamber of the nozzle body from the actuator section. The flange of the rolling wall diaphragm is sealed between the mating faces of the nozzle

A spray gun configured with a roiling wall diaphragm piston and vented piston cylinder connecting the needle to the needle actuator and isolating the liquid chamber of the nozzle body from the actuator section. The flange of the rolling wall diaphragm is sealed between the mating faces of the nozzle body housing and the actuator housing. The actuator is a double action air operated piston and cylinder. Sanitary, non-threaded quick disconnect couplings are used between the several components of the spray gun for easy cleaning and servicing of the nozzle body, tip and needle, and easy replacement of the rolling wall diaphragm.

대표청구항 ▼

[ What is claim is:] [10.]10. A spray gun for application of liquids in an atomized spray pattern, comprising:a nozzle body housing with a mating face, a liquid chamber opening to said mating face, a spray liquid supply port connecting to said liquid chamber, a spray air port, an atomizing spray noz

[ What is claim is:] [10.]10. A spray gun for application of liquids in an atomized spray pattern, comprising:a nozzle body housing with a mating face, a liquid chamber opening to said mating face, a spray liquid supply port connecting to said liquid chamber, a spray air port, an atomizing spray nozzle with a fluid tip connecting to said liquid chamber and with spray air orifices connecting with said spray air port, and a needle, said needle being moveable forward for closing said fluid tip to outflow of said spray liquid and moveable aft for opening said fluid tip to said outflow of said spray liquid,an actuator housing with a mating face, a vented diaphragm cylinder with one end opening on said mating face, and a rolling wall diaphragm with a center section and a perimeter flange, said center section attached to a diaphragm piston, said diaphragm piston installed in said diaphragm cylinder and attached to a diaphragm piston actuator, said diaphragm piston actuator comprising a double action air operated piston and cylinder assembly with an opening air port and a closing air port, said perimeter flange of said diaphragm extending over said mating face, said needle having a threaded stem rotably engageable in a threaded centerbore in the face of said diaphragm piston, anda quick disconnect means for coupling said front housing to said rear housing.