Disclosed is a spray gun having a gas nozzle and a fluid nozzle, each of the nozzles being in cooperative spatial relationship with the other to cause a fluid stream issuing from the fluid nozzle to be atomized and sprayed as fluid particles by gas issuing from the gas nozzle. In a preferred embodiment...http://www.google.fr/patents/US4266721?utm_source=gb-gplus-shareBrevet US4266721 - Spray application of coating compositions utilizing induction and corona charging means
Spray application of coating compositions utilizing induction and corona ...