Low speed hydraulic motor with counter balanced planetating driv

Details Low speed hydraulic motor with counter balanced planetating driv Low speed hydraulic motor with counter balanced planetating driv

1979-04-13

1981-03-03

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

418 73, 418186, 418267, F03C 200

Patent

active

042538068

ABSTRACT:
A drive ring for a rotary expansible chamber hydraulic motor has driving gear teeth on its inner periphery and is constrained against other than planetating motion by a series of angularly spaced eccentric bearings rotatably mounted in fixed port plates between which the drive ring is sandwiched. The eccentric bearings are hydorstatically balanced against peak loads with high pressure fluid. Vanes sliding in radial slots in the drive ring are maintained in engagement against a surrounding cylindrical chamber wall by leaf springs whose opposite ends slide in grooves in the port plates.

REFERENCES:
patent: 60995 (1867-01-01), Butterfield
patent: 3918857 (1975-11-01), Fitzgerald
patent: 3981641 (1976-09-01), D'Amato

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