Patent ID: 6293429
Filing Date: 2001-09-25
Classification: B05B

Abstract:
A fluid metering device consisting essentially of:a fluid reservoir for containing a first fluid under pressure P1 with a floating ball within said reservoir,a means for restricting travel of said ball within said reservoir,an electronic pulsed signal generator operatively connected to an electronically controlled three-way valve,said electronically controlled three-way valve operatively connected to said reservoir and to a source of a second fluid under pressure P2 wherein said valve is controlled by said signal generator to provide variable flow rates of said first fluid in a series of pulses of known volume,a float check valve operatively connecting said three-way valve with said reservoir,a check valve operatively connecting said reservoir with a source of said first fluid under pressure P1,a pressure relief valve operatively connected to said reservoir and to an outlet end of said device, anda means for emitting operatively connected to the outlet end of said device.