Positionable control device for a variable delivery pump

Rotary expansible chamber devices – With changeable working chamber magnitude – Intermeshing rotary members

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Details

418 26, 418 27, 418171, F04C 210, F04C 1504

Patent

active

044139608

ABSTRACT:
A control device for a positionable pump has a body with inner and outer diameters eccentric to each other mounted in the pump housing bore and is actuated by hydraulic pressure in one angular direction. An opposing spring force acts in the opposite direction for controlling the angular position of the body. A controlled member is nested in the inside diameter of the body and a power rotated control member is nested within and drivingly engages the controlled member and is eccentric thereto, being a pair of pumping elements. The pump elements being gerotor or vane type elements utilized to pump fluids and which depend upon the eccentric position of their relative components for a fixed delivery of fluids. The body is controlled in infinitely angular positions relative to the pump housing to regulate the eccentric position of such pumping elements and thereby controlling the volume output of said pump elements relative to the demand of the external system increasing and diminishing needs.

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