Patent ID: 7124961
Filing Date: 2006-10-24
Classification: A01M,B05B

Abstract:
1. A sprayer system with a tank containing a spray fluid, a pump for generating a spray pressure, a feed line, at least one spray nozzle system, a recirculation line and vacuum structure connected to the recirculation line and generating a partial vacuum in recirculation line, a throttle device located in the feed line, and a control valve located between at least one spray nozzle system and the recirculation line, the control valve having a closed position wherein the spray pressure generated by the pump is applied to at least one spray nozzle system, and the control valve having an open position wherein the partial vacuum generated in the recirculation line is applied to at least one spray nozzle system, wherein the vacuum structure comprises an injector, and including an injector line connected between the feed line and the injector and providing pressurized spray fluid to the injector to generate the partial vacuum.