Pumps – Expansible chamber type – Having pumping chamber pressure responsive distributor
Patent
1985-04-04
1986-03-04
Croyle, Carlton R.
Pumps
Expansible chamber type
Having pumping chamber pressure responsive distributor
417566, 1375124, 137855, F04B 2102
Patent
active
045738882
ABSTRACT:
This invention relates to an improved fluid pump. The pump is of the type, wherein a reciprocating motor acts in concert with supply and exhaust valves to pump fluid from a source to its destination. In the preferred embodiment, the motor comprises a reciprocating diaphragm and the supply and exhaust valves comprise a single resilient plate with individual valve members formed as cutouts therein. The valve plate is sandwiched between two plates which form the associated porting. The interaction between the various ports on the valve plates results in improved sealing effect for the valves.
REFERENCES:
patent: 249557 (1881-11-01), Truesdell
patent: 727069 (1903-05-01), Bomeisler
patent: 2725183 (1955-11-01), Hanson
patent: 3058140 (1962-10-01), Henss
patent: 3134125 (1964-05-01), Kaiser
patent: 3568712 (1971-03-01), Rinehart
patent: 3814552 (1974-06-01), Guggenheim et al.
patent: 4181477 (1980-01-01), Litt
Aspen Laboratories, Inc.
Croyle Carlton R.
Schoenle Paul David
Stout Donald E.
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