One-piece check valve for use in a fluid dispenser

Details One-piece check valve for use in a fluid dispenser One-piece check valve for use in a fluid dispenser

1977-08-01

1979-12-18

Bartuska, Francis J.

Dispensing

Outlet element operated by pressure of contents

Spring form, resilient or compressible flow controller or...

1374542, 137855, B65D 3900, F16K 1514

Patent

active

041790510

ABSTRACT:
There is disclosed herein a one-piece check valve for use in an applicator tip for fluid substances, or the like, comprises a reed portion and a valve seat portion and an interconnecting integral hinge section, permitting the respective portions to be folded over and engaged in superposed relation. Further, the valve includes a flange segment also preferably formed in halves adjacent the inlet sections of the reed and seat portions. The respective portions are molded as an integral unit, and upon assembly, the respective reed and valve seat portions are folded over at the hinge portion so that the reed portion seats on the seat provided by the valve seat portion, and the flange segment halves abut to form a valve inlet and an abutment shoulder extending outwardly of the inlet for engaging complimentary retaining shoulders, flanges or the like of the applicator or other fluid carrying device. As such, fluid entering the applicator will pass through the check valve, and can exit the valve quite easily; however, any back-flow through the applicator is prevented by the engagement of the reed on the shoulder portion.

REFERENCES:
patent: 1992067 (1935-02-01), Gunn
patent: 2012950 (1935-09-01), Block
patent: 2105695 (1938-01-01), Lateur
patent: 3128785 (1964-04-01), Krummel
patent: 3360169 (1967-12-01), Susuki et al.
patent: 3365138 (1968-01-01), Green
patent: 3814124 (1974-06-01), Bell

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