Diaphragm pump

Details Diaphragm pump Diaphragm pump

1978-04-13

1980-02-12

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

417308, F04B 910

Patent

active

041881702

ABSTRACT:
A diaphragm pump includes a pump chamber, a pressure fluid chamber, a diaphragm partitioning the interior of the pump into the pump chamber and the pressure fluid chamber, a cylinder communicating with the pressure fluid chamber, and a plunger reciprocable within the cylinder. The pressure fluid chamber or the cylinder communicates with a pressure fluid reservoir via a pressure regulating valve adapted to open when the pressure in the pressure fluid chamber is too high, and a valve adapted to open before the pressure in the pressure fluid chamber is too low, and to close when the pressure is restored to a given pressure level.

REFERENCES:
patent: 1961602 (1934-06-01), Squires
patent: 2620629 (1952-12-01), Gauldie
patent: 2975599 (1961-03-01), Bennett

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