Rechargeable sprayer with improved valve system and charge cycle

Details Rechargeable sprayer with improved valve system and charge cycle Rechargeable sprayer with improved valve system and charge cycle

1973-12-13

1976-02-24

Hoffman, Drayton E.

Dispensing

With discharge assistant

With biasing means for discharge assistant and/or its casing

239333, B67D 532, G01F 1104

Patent

active

039400298

ABSTRACT:
A manually operated, hand-held, rechargeable, liquid spraying device having a non-pressurized, refillable or non-refillable container, is disclosed. The sprayer, a completely contained device, comprises a charging mechanism whereby, upon rotation of one part relative to another part, a movable piston is displaced vacating a charge chamber which, simultaneously, is charged with liquid. Displacement of the piston compresses a responsor or spring which, in turn, causes the piston to exert a hydraulic pressure on the liquid now in the chamber vacated by the piston. Hydraulic pressure on the charge chamber liquid is maintained by the closing of a one-way, elastomeric resilient valve in the entrance in the chamber, which closing occurs when the piston halts in its movement. A push botton flow control valve, when operated, permits liquid to flow from the charge chamber to an outlet nozzle through associated conduit means, being urged therethrough by the piston which is moved back into the charge chamber under the urging of the responsor or spring.

REFERENCES:
patent: 2328863 (1943-09-01), Threm
patent: 3187960 (1965-06-01), Gorman
patent: 3406909 (1968-10-01), Pfeiffer
patent: 3790034 (1974-02-01), Horvath

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