Fluid sprinkling – spraying – and diffusing – Motor or spray fluid operated continuously moving discharge... – Spray fluid operated
Reexamination Certificate
1999-02-09
2001-02-27
Kashnikow, Andres (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Motor or spray fluid operated continuously moving discharge...
Spray fluid operated
Reexamination Certificate
active
06193171
ABSTRACT:
FIELD OF THE INVENTION
The invention is in the art of fluid dispensers for directing fluid to a selected location. The fluid dispenser is a pistol grip hose nozzle having a pulsator for sequentially pulsing the liquid discharged from the nozzle.
BACKGROUND OF THE INVENTION
Pistol grip nozzles coupled to hoses and tubes carrying liquids, such as water, are used to control the dispensing of the liquids. The modes of operation of pistol grip nozzles have been adjusted to offer no flow, solid cone sprays and solid jet sprays. These liquid sprays are continuous patterns to achieve the waste of water. H. Chow and S. J. Goodman in U.S. Pat. No. 4,534,512 describe a pistol grip nozzle having a turret rotatable on a barrel to change the continuous spray patterns of water discharged from the nozzle. The discharged water does not change velocity or pulse as it exits from the nozzle.
SUMMARY OF THE INVENTION
The invention resides in a liquid pulsator useable with a pistol grip nozzle to discharge pulses of liquid, such as water, to a selected location. The pistol grip nozzle has a hand operated lever that is manually moved to control the flow of liquid to the pulsator attached to the nozzle. The pulsator has a case adapted to be mounted on the nozzle. Located within the case is a pulsator head that sequentially blocks the flow of liquid through orifices in the head to alter the flow velocity of the liquid exiting from the head thereby creating liquid pulses. The pulsator head includes a diverter that directs several streams of liquid toward an impeller. The moving streams of liquid rotate the impeller. The impeller has a member that intermittently blocks the flow of liquid through liquid discharge orifices in the head and allows liquid to flow through the orifices. This causes liquid pulses having different liquid flow rates. The pulsating liquid conserves liquid and increase cleaning effectiveness of the liquid discharged on a surface.
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Kashnikow Andres
Kim Christopher S.
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