Pumps – Expansible chamber type – Having pumping chamber pressure responsive distributor
Patent
1992-03-02
1993-09-14
Bertsch, Richard A.
Pumps
Expansible chamber type
Having pumping chamber pressure responsive distributor
417313, 417 61, 2102423, 210923, F04B 2102, F04B 3910
Patent
active
052443655
ABSTRACT:
A cleanup apparatus for pumping oil and/or debris laden liquid from remote areas comprises an elongated tubular barrel having a distal end and a proximal end, an elongated plunger having a piston thereon reciprocably mounted in said barrel, a valving assembly detachably mounted on the distal end of said barrel and comprising an inlet conduit defining an inlet port and an outlet conduit defining an outlet port, a one-way inlet valve in the inlet port, and a one-way outlet valve in the outlet port, and a remote positionable floating intake assembly.
REFERENCES:
patent: 157760 (1874-12-01), Reamy
patent: 2399245 (1946-04-01), Parker
patent: 3549015 (1970-12-01), Willinger
patent: 3802802 (1974-04-01), Greer
patent: 4906366 (1990-03-01), Moore
patent: 4974674 (1990-12-01), Wells
patent: 5108591 (1992-04-01), Hagan
Bertsch Richard A.
Freay Charles G.
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