Valveless, positive displacement pump

Details Valveless, positive displacement pump Valveless, positive displacement pump

1982-05-13

1984-10-30

Smith, Leonard E.

Pumps

Expansible chamber type

Pumping member position controlled port

F04B 706

Patent

active

044797591

ABSTRACT:
A pump may be provided for valveless, positive-displacement, rotary operation having at least one piston operating within a cylinder and preferably describing a complex motion including both reciprocating and rotary motions whereby vacuum and pressure forces may be alternately created at ports into the cylinder.

REFERENCES:
patent: 837905 (1906-12-01), Knott
patent: 857221 (1907-06-01), Anderson et al.
patent: 2451390 (1948-10-01), Humphreys
patent: 2576175 (1951-11-01), Esley
patent: 3930762 (1976-01-01), Varga
patent: 3981688 (1976-09-01), Telang et al.
patent: 3994632 (1976-11-01), Schreiber
patent: 4180028 (1979-12-01), Richter

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