Bi-rotational pump/hydraulic actuator

Details Bi-rotational pump/hydraulic actuator Bi-rotational pump/hydraulic actuator

2005-12-27

2005-12-27

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

With mechanical sealing

Axially movable end wall or end wall portion

C418S133000, C418S206100, C418S206400, C060S475000, C060S476000

Reexamination Certificate

active

06979185

ABSTRACT:
A novel bi-rotational pump adapted to pump fluid in either of two directions by reason of construction inclusive of passageways and an array of check valves and pilot pistons which cooperate in one direction and in another way in the other direction.

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patent: 4127365 (1978-11-01), Martin et al.
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patent: 4606713 (1986-08-01), Lipscombe
patent: 5144801 (1992-09-01), Scanderbeg et al.
patent: 6152715 (2000-11-01), Kaempe et al.
patent: 350877 (1961-01-01), None
patent: 60-75783 (1985-04-01), None

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