Unitary check valve

Details Unitary check valve Unitary check valve

1994-08-01

1995-08-22

Kashnikow, Andres

Dispensing

Plural sources, compartment, containers and/or spaced jacket

With common discharge

222494, B67D 560

Patent

active

054431832

ABSTRACT:
A check valve disposed to fit between paired outlet nozzles of adjacent cartridges of a multiple component reactive fluid system and a mixing tube sealed over the nozzles and having a single outlet for discharging the mixed reactive material. The check valve has a flat portion and an upstanding wall formed therefrom, each sized and shaped to seat over the nozzles and against the mixing tube. Openings formed in the flat portion commumicate with the nozzles and provide separate flow paths of the respective materials to the mixing tube. Check structure as separate flaps integral with the wall cover and close the openings. The internal flap resilience normally holds the check valve closed, but allows flap flexture to open the outlet nozzle when the cartridge pressures exceed the closing forces. The check valve restricts back flow of either material into either outlet nozzle.

REFERENCES:
patent: 2826339 (1958-03-01), Maillard
patent: 2876935 (1959-03-01), Lindberg
patent: 3228418 (1966-01-01), Rosbach et al.
patent: 4677447 (1987-06-01), Nielsen
patent: 4753536 (1988-06-01), Spehar et al.
patent: 4798311 (1989-01-01), Workum
patent: 5263614 (1993-11-01), Jacobsen et al.
patent: 5314092 (1994-05-01), Jacobsen et al.

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