Fluid pump with dual diaphragm check valves

Details Fluid pump with dual diaphragm check valves Fluid pump with dual diaphragm check valves

1980-01-04

1983-04-12

Gluck, Richard E.

Pumps

Expansible chamber type

Having pumping chamber pressure responsive distributor

417566, 417413, 13751215, 1375124, F04B 2102, F04B 3910, F04B 4304

Patent

active

043796818

ABSTRACT:
A fluid pump has an inlet, an outlet, a pumping chamber, pumping means, and inlet and outlet check valves. In one embodiment each check valve is formed by a flexible member positioned between a pair of relatively rigid members, the latter each having an opening bounded by a surface portion thereof with such surface portions cooperating with the flexible member to provide a fluid-tight seal therewith. The flexible member includes a movable means which moves upon flexure of such member in response to a pressure differential across the same and being operative when moved substantially to the respective extreme positions to block fluid flow between respective passages or to pass fluid flow between such passages. Moreover, a contact carrier is provided for repeatably intermittently closing contacts and opening the same. Such carrier is formed by a curved arm having a tendency to assume a natural condition, e.g. in a flat plane, when unstressed, a resilient characteristic operative generally perpendicularly to that in which the radius of curvature is taken, and a pair of ends, one being relatively fixed and the other relatively movable. A contact is affixed to the movable end. Force applied to the movable end in a direction parallel to that in which the resilient characteristic is operative causes resilient deformation of the curved arm to move the contact; and the natural resiliency of the curved arm moves the contact back to its original position when the force has been removed.

REFERENCES:
patent: 2980032 (1961-04-01), Schneider
patent: 3496872 (1970-02-01), Reister et al.
patent: 3547561 (1970-12-01), Lavon
patent: 3814552 (1974-06-01), Guggenheim et al.
patent: 4152098 (1979-05-01), Moody
patent: 4181477 (1980-01-01), Litt

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