Rotary position displacement pump or motor

Details Rotary position displacement pump or motor Rotary position displacement pump or motor

1989-07-11

1991-07-16

Smith, Leonard E.

Rotary expansible chamber devices

Pressure fluid radially balances working or rotating...

418159, 418170, F01C 210, F04C 210

Patent

active

050320696

ABSTRACT:
A hydraulic device has an inner rotor of cylindrical section mounted eccentrically within an outer rotor of tubular section. Angularly spaced axially extending ribs of part-circular cross-section are provided on the inner rotor and correspondingly spaced axial recesses of part-circular cross-section are provided on the opposed surface of the outer rotor, the ribs meshing with the recesses over an arcuate working zone in which a plurality of adjacent ribs engage corresponding recesses, the ribs moving relative to but in engagement with the recesses as they progress through the working zone. A baffle is located between the rotors to provide a seal therebetween outside the working zone and an inlet port is provided to the working zone adjacent the termination thereof relative to the direction of rotation of the rotors while an outlet port is provided adjacent the center of the working zone, the inlet and outlet ports being separated by at least the pitch of the ribs on the rotor.

REFERENCES:
patent: 1769047 (1930-07-01), Weeden
patent: 3406631 (1966-07-01), Brown
patent: 3679334 (1972-07-01), Keldrauk
patent: 4392799 (1983-07-01), Shikamo

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