Fluid pump

Details Fluid pump Fluid pump

2011-01-11

2011-01-11

Freay, Charles G (Department: 3746)

Pumps

Condition responsive control of pump drive motor

By controlling drive motor motive fluid

C417S053000, C417S228000, C417S395000

Reexamination Certificate

active

07866953

ABSTRACT:
A fluid pump for moving a fluid from a first fluid source of the fluid in a low pressure state to a second fluid source of the fluid in a high pressure state, includes a chamber; a partitioning member displaceable in the chamber and dividing the chamber into first and second sub-chambers of varying volumes; the first sub-chamber having an opening controllably communicable with either the second fluid source or a third fluid source; the second sub-chamber having inlet and outlet openings controllably communicable with the first and second fluid sources, respectively; and a cooling element for cooling a fluid in the first sub-chamber.

REFERENCES:
patent: 3513659 (1970-05-01), Martini
patent: 4502848 (1985-03-01), Robertson et al.
patent: 5615643 (1997-04-01), Hill
patent: 5720177 (1998-02-01), Derrick et al.
patent: 6302653 (2001-10-01), Bryant et al.
patent: 6505691 (2003-01-01), Judge et al.
patent: 7171810 (2007-02-01), Conrad

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