Patent ID: 6634570
Filing Date: 2003-10-21
Classification: B05B,B29B

Abstract:
A spray gun for spraying at least one of abrasive media and media to which abrasive material has been added, comprising a valve arranged in a gun head having a nozzle and an oval-shaped nozzle opening and operable by a nozzle needle, the nozzle having a nozzle channel ending in the nozzle opening, the nozzle needle being movably supported in the nozzle channel, the nozzle having at least one bore laterally entering said nozzle channel that is utilized for supplying the media, said at least one bore capable of being closed off by the nozzle needle, said nozzle needle having a diameter slightly less than the inner diameter of the nozzle channel, and the length of said nozzle needle being chosen such that when said nozzle needle is in a resting state, a first end of said nozzle needle ends at least to the nozzle opening of said spray gun;an insert for receiving said valve, wherein lines for supplying the media are connected to at least one of the valve and the insert, the insert having a leakage channel, wherein the nozzle needle is connected at a second end to an operating rod supported in a guideway of the insert and biased by a spring, the guideway being in alignment with the nozzle opening and the nozzle channel; and wherein an abutment is secured to a trigger, which abutment cooperates in combination with the operating rod, the guideway, the spring and the trigger to provide an operating and return device for the nozzle needle.