Precompression valve for trigger sprayer

Details Precompression valve for trigger sprayer Precompression valve for trigger sprayer

1994-03-16

1995-11-21

Kashnikow, Andres

Dispensing

With discharge assistant

With biasing means for discharge assistant and/or its casing

222380, 2223833, 239333, G01F 1136

Patent

active

054679001

ABSTRACT:
The trigger sprayer comprises: a body having a cylinder therein; a liquid inlet in communication with the cylinder; an outlet waterway in communication with the cylinder; an outlet nozzle which has an outlet orifice and which is movable to and from a position in communication with the waterway; a piston having an inner and an outer end and being received in said cylinder and being movable between an outer at rest position and an inner pumping stroke position during the pumping strokes of the piston in the cylinder; a trigger operatively coupled to the body and acting on the outer end of the piston; a precompression valve in the cylinder, the valve being operable to allow liquid in the cylinder to enter the waterway only after a predetermined pressure is established in the cylinder and to stop liquid from entering the waterway when the pressure in the cylinder falls below the predetermined pressure; and, biasing structure for biasing the piston away from the valve.

REFERENCES:
patent: Re33235 (1990-06-01), Corsette
patent: 3768734 (1973-10-01), Anderson, Jr. et al.
patent: 4046292 (1977-09-01), Corsette
patent: 4191313 (1980-03-01), Blake et al.
patent: 4225060 (1980-09-01), Kutik et al.
patent: 4606480 (1986-08-01), Gazulla
patent: 4618077 (1986-10-01), Corsette
patent: 4669664 (1987-06-01), Garneau
patent: 4728009 (1988-03-01), Schmidt
patent: 4872596 (1989-10-01), Corsette
patent: 4958754 (1990-09-01), Dennis
patent: 5299717 (1994-04-01), Geier
patent: 5318206 (1994-06-01), Maas et al.

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