Valve construction

Details Valve construction Valve construction

1988-10-24

1990-09-04

Rolla, Joseph J.

Dispensing

With discharge assistant

With biasing means for discharge assistant and/or its casing

222383, 1376142, B65D 8854

Patent

active

049537580

ABSTRACT:
A valve for pumping fluid includes a valve body and a valve chamber in the valve body. The valve body has a first end with an entrance passage therethrough. The entrance passage communicates with the chamber to provide a passage for the flow of fluid through the container to the valve chamber. A plunger and a piston are provided. The piston is within the chamber and is connected to the plunger. The piston is moveable in the chamber in response to depression of the plunger. A seat is in the chamber as is a flexible washer. The flexible washer is adjacent to the piston and movable therewith. A biasing spring is provided in the valve body for biasing the washer against the seat. A spout is provided. An exit passage which extends between the spout and the chamber is provided and this exit passage is sealed by the washer when the washer is in the seated position. A normally closed check valve is between the chamber and the entrance passage. Depression of the plunger causes the seal to flex and permits passage of fluid to the exit passage. Release of the plunger creates a decreased pressure in the valve chamber to permit fluid to flow through the entrance passage and open the check valve to refill the chamber.

REFERENCES:
patent: 2534504 (1950-12-01), Engstrom
patent: 3006282 (1961-10-01), Sisson
patent: 3124080 (1964-03-01), Sisson
patent: 3240402 (1966-03-01), Russell
patent: 3907174 (1975-09-01), Steinman
patent: 4301826 (1981-11-01), Beckerer
patent: 4330071 (1982-05-01), Ohlson
patent: 4762475 (1988-08-01), Fuchs

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