Rotor for hydraulic pump or motor

Details Rotor for hydraulic pump or motor Rotor for hydraulic pump or motor

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F04C 2/00 (2006.01) F01C 21/08 (2006.01) F03C 2/30 (2006.01)

Patent

CA 1072818

TITLE ROTOR FOR HYDRAULIC PUMP OR MOTOR ABSTRACT OF DISCLOSURE A hydraulic vane-type pump or motor comprising a housing and a stator defining a rotor chamber, and a rotor for rotation in said chamber on a shaft extending axially through said housing. To prevent gouging of the walls of the rotor chamber by the sharp peripheral edges of the rotor, the rotor sidewalls are ground or offset in the area of the peripheral edges to provide sufficient clearance between the rotor side- walls and the chamber walls. The rotor is offset to a lesser depth beginning at a point radially inwardly from the outer peripheral edge toward the center thereof to minimize excessive oil leakage normally associated with rotors which are milled to prevent gouging.

296040

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