Patent ID: 6193171
Filing Date: 2001-02-27
Classification: B05B

Abstract:
An apparatus for dispensing pulses of a liquid to a selected location comprising: a liquid dispenser operable to discharge a liquid, a pulsator connected to the dispenser operable to receive liquid from the dispenser and discharge pulses of liquid, said pulsator having a case, said dispenser and case having releasable connection means mounting the case on the dispenser, said case having a first opening in communication with the liquid dispenser for receiving liquid from the dispenser and a cylindrical pocket open to the first opening, said pocket having an open end, a pulsator head assembly located in the pocket in the case, said head assembly having a cup-shaped housing located in the pocket having a base with a second opening located adjacent the first opening and an internal chamber, seal means between the base and case surrounding the second opening, a liquid diverter for directing separate streams of liquid into the internal chamber in the pulsator head assembly, an impeller located within the internal chamber, a head extended across and closing the open end of the pocket and engageable with the casing and housing, said head having orifices for discharging liquid to the selected location, a cylindrical tubular boss on the head extended into the chamber for mounting the impeller within the chamber for rotation around the boss by the separate streams of liquid directed into the chamber, liquid blocking means on the impeller located adjacent said orifices during rotation of the impeller to restrict the flow of liquid through said orifices to cause said liquid flow from the head to pulse, bolt means extended through the cylindrical boss, and anchor means mounted on the case cooperating with the bolt means to releasably hold the head in engagement with the case and housing and seal means in engagement with the case, said bolt means being removable from the anchor means to allow the pulsator head assembly to be removed from the case.