Diaphragm pump

Details Diaphragm pump Diaphragm pump

1978-10-12

1980-11-04

Freeh, William L.

Pumps

Motor driven

Electric or magnetic motor

74 56, 1525002, F04B 4304

Patent

active

042317215

ABSTRACT:
A diaphragm pump comprises a diaphragm peripherally mounted in a housing to define a pump chamber and a gear chamber. A cam follower is reciprocably mounted in the gear chamber and secured to the diaphragm. A rotary cam-gear rotatably mounted in the gear chamber has an annular cam face engaging the cam follower to reciprocate the diaphragm when driven by an electric motor through a single stage reduction gear set. A compression spring located in the pump chamber expands the pump chamber and maintains the cam follower in engagement with the cam face.

REFERENCES:
patent: 1588832 (1926-06-01), Young
patent: 2819678 (1958-01-01), Nordell
patent: 3134125 (1964-05-01), Kaiser
patent: 3152726 (1964-10-01), Chivers
patent: 3153347 (1964-10-01), Schulze
patent: 3164024 (1965-01-01), Tarry et al.

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