Diaphragm air pump assembly

Details Diaphragm air pump assembly Diaphragm air pump assembly

1980-01-17

1982-06-15

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

91306, 91313, F04B 4306, F01L 2502

Patent

active

043348378

ABSTRACT:
A diaphragm air pump assembly pneumatically associated with a vacuum source and an atmospheric air source, comprises two diaphragms interconnected by a vertically extending rod to define two vacuum operational chambers and two pump chambers, two valves for controlling the alternative admission of vacuum to the vacuum operational chambers, and two normally closed valves operable in response to movement of the diaphragms in unison with the rod, each of two corresponding constituent parts being disposed and mounted in a symmetrical arrangement with respect to the central axis of the pump assembly. When the diaphragms are moved in one direction, one of two normally closed valves is opened to admit the vacuum into one of two vacuum operational chambers while admitting atmospheric air into the other vacuum operational chamber. When the diaphragms are moved in the other direction the other normally closed valve is opened to admit the vacuum into the other vacuum operational chamber while admitting atmospheric air into one of two vacuum operational chambers. Thus two pump chambers are alternatively compressed to effect the pumping operation.

REFERENCES:
patent: 1161787 (1915-11-01), Nickol
patent: 1920014 (1933-07-01), Horton et al.
patent: 3282167 (1966-11-01), McKenzie
patent: 3943823 (1976-03-01), Tammy

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