Variable displacement hydraulic pump apparatus

Details Variable displacement hydraulic pump apparatus Variable displacement hydraulic pump apparatus

1976-05-10

1977-03-15

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Condition responsive control of motive fluid flow

60487, 60490, 417359, F15B 1518, F16H 3946

Patent

active

040117227

ABSTRACT:
A hydraulic pump apparatus including an outer housing having internal walls which are spherically configured, a hydraulically actuable variable position control ring which cooperates with the spherical housing walls to define the geometry of a hydraulic working cavity, and a rotor assembly having vanes which divide the working cavity into a plurality of working chambers and which follow the position of the control ring to vary the volume of the working chambers so as to move fluid into and out of inlet and outlet ports, respectively. The vanes are supported by a plurality of concentric rings which are attached in gimbal fashion to a rotor hub and pin assembly.

REFERENCES:
patent: 1571954 (1926-02-01), Lambert
patent: 2420806 (1947-05-01), Anderson
patent: 2685255 (1954-08-01), Carner
patent: 3044409 (1962-07-01), Harris

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