Diaphragm pump

Details Diaphragm pump Diaphragm pump

1976-10-04

1978-04-25

Freeh, William L.

Pumps

Expansible chamber type

Having pumping chamber pressure responsive distributor

F04B 4304, F04B 3910

Patent

active

040860370

ABSTRACT:
A diaphragm pump is described having a pump chamber fitted with an insert. The insert defines a concave end face positioned closely adjacent the diaphragm of the pump. The concave face of the insert and the diaphragm together define an effective portion of the pump chamber which is swept by the diaphragm when the pump is in use. The insert is formed with inlet and outlet passageways through which fluid flows to and from said effective portion of the pump chamber.

REFERENCES:
patent: 2253206 (1941-08-01), Farrow, Jr. et al.
patent: 2285215 (1942-06-01), Lotz
patent: 2935248 (1960-05-01), Gerters
patent: 3049284 (1962-08-01), Alamprese
patent: 3539276 (1970-11-01), Matsura
patent: 3671151 (1972-06-01), Duke et al.
patent: 3776666 (1973-12-01), Ludwig
patent: 3825374 (1974-07-01), Konda

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