Fluid dispensing valve mechanism and assembly

Details Fluid dispensing valve mechanism and assembly Fluid dispensing valve mechanism and assembly

1986-09-03

1988-02-09

Bartuska, F. J.

Dispensing

With resilient biasing means for outlet element

For elements reciprocable axially of discharge opening

2511491, 137903, B22D 3700

Patent

active

047236949

ABSTRACT:
A fluid dispensing valve mechanism including a valve body member having an annular seat portion which is contacted by the bushing portion of the shaft-bushing member to effect a seal. The shaft is interposed between the bushing and a contact point on a tower assembly, the latter held in fixed relationship to the valve body. The shaft, at least, is made from elastomeric material; and it is bowed off the axis between the center of the annular seat portion and the contact point on the tower assembly, when in position. This results in a positive seal between the bushing member and the annular seat. When the bushing member is displaced axially to dispense the fluid, the shaft member bows even further. The hysteresis effect inherent in the elastomeric shaft returns the bushing member to its contact position with the annular seat.

REFERENCES:
patent: 2212567 (1940-08-01), Kirmes
patent: 2714475 (1955-08-01), Roehrich
patent: 2957610 (1960-10-01), Michel
patent: 3035742 (1962-05-01), Cholet

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