Fluid driven pump

Details Fluid driven pump Fluid driven pump

1993-02-17

1994-07-05

Casaregola, Louis J.

Pumps

Motor driven

Fluid motor

417395, F04B 3500

Patent

active

053262344

ABSTRACT:
A fluid driven pump includes an inlet, at least one expansion chamber for expanding upon introduction of fluid thereinto and contracting upon removal of fluid therefrom, a pumping chamber adjacent the expansion chamber for pumping in response to the expansion chamber's expansion and contraction, and an outlet for outletting pressurized fluid from the expansion chamber. A control system controls a flow of fluid from the inlet to the expansion chamber and a flow of pressurized fluid from the expansion chamber to the outlet. The outlet includes structure for gradually reducing the pressure of the fluid within a portion of the outlet to reduce blockage of the outlet due to freezing.

REFERENCES:
patent: 2944528 (1960-07-01), Phinney
patent: 3071118 (1963-01-01), Wilden
patent: 3176719 (1965-04-01), Nord et al.
patent: 3454214 (1969-07-01), Milleron
patent: 3635125 (1972-01-01), Rosen et al.
patent: 3791768 (1974-02-01), Wanner
patent: 3838946 (1974-10-01), Schall
patent: 4406596 (1983-09-01), Budde
patent: 4496294 (1985-01-01), Frikker
patent: 4566867 (1986-01-01), Bazan et al.
patent: 4817503 (1989-04-01), Yamada
patent: 4854832 (1989-08-01), Gardner et al.
patent: 4921408 (1990-05-01), Kvinge et al.

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