Valve assembly

Details Valve assembly Valve assembly

1996-11-13

1998-02-17

Gluck, Richard E.

Pumps

Expansible chamber type

Having pumping chamber pressure responsive distributor

417571, 1375124, F04B 3910

Patent

active

057185719

ABSTRACT:
A valve assembly for a pumping apparatus includes a cylinder sleeve having a head end with inlet and outlet ports surrounded by a recess. An elastomer seal element is received in the recess and includes a peripheral portion that encircles the ports and a bridge portion that extends across the space between the ports. Integral flapper valves extend into the spaces between the peripheral portion and the bridge portion. A valve head with inlet and exhaust chambers has a flat surface that seats against the seal element. The cross-section of the peripheral and bridge portions are compressible, such as that of an O-ring.

REFERENCES:
patent: 3058140 (1962-10-01), Henss
patent: 4275999 (1981-06-01), Hetzel et al.
patent: 4437490 (1984-03-01), Demers et al.
patent: 4573888 (1986-03-01), Kitchin
patent: 5022833 (1991-06-01), Kandpal et al.
patent: 5213025 (1993-05-01), Rozek
patent: 5213125 (1993-05-01), Leu
patent: 5385140 (1995-01-01), Smith
patent: 5456287 (1995-10-01), Leu
patent: 5476367 (1995-12-01), Zimmermann et al.

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