Fluid operated pump

Details Fluid operated pump Fluid operated pump

1984-06-12

1987-11-10

Smith, Leonard E.

Pumps

Condition responsive control of pump drive motor

By controlling drive motor motive fluid

91346, 92 98D, 92103SD, 417393, F04B 4306

Patent

active

047054581

ABSTRACT:
A fluid operated pump comprising a housing including first and second cylinders. First and second pistons are rigidly fixed to each other and situated in their respective cylinders, the cylinders alternately receiving pressurized fluid for operating the pump. The pump includes novel valving means and novel seals.

REFERENCES:
patent: 740892 (1903-10-01), Meyer
patent: 1839540 (1932-01-01), Farr
patent: 2765743 (1956-10-01), Hollinshead
patent: 3192865 (1965-07-01), Klempay
patent: 3730217 (1973-05-01), Gute
patent: 3823739 (1974-07-01), McMullan
patent: 4035107 (1977-07-01), Kesten et al.
patent: 4381180 (1983-04-01), Sell
patent: 4540349 (1985-09-01), Du
patent: 4544328 (1985-10-01), Credlee, Jr.

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