Planetary gear motor having fixed and rotating sun gears

Details Planetary gear motor having fixed and rotating sun gears Planetary gear motor having fixed and rotating sun gears

1974-09-10

1976-08-03

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

418133, 418151, 74802, F01C 108, F01C 1908, F01C 2100, F03C 300

Patent

active

039726592

ABSTRACT:
An external gear type fluid power motor wherein a rotor receives two groups of gears each including a sun gear and one or more planet pinions. The sun gears are coaxial with each other; one thereof is fixed and the other drives an output shaft. Each planet pinion of one group is integral with a planet pinion of the other group or is nonrotatably coupled to it by an oldham coupling. Pressurized fluid is admitted by way of passages machined into a supporting member which is rigid with the housing and rotatably supports one end of the rotor. Such fluid flows through passages in the rotor and rotates the planet pinion or pinions of one or both groups whereby the planet pinion or pinions of one group roll along the fixed sun gear to drive the rotor and to cause the planet pinion or pinions of the other group to roll about the other sun gear which thereby rotates the output shaft. The stubs of the gears can be mounted in discrete bearing members or in covers which form part of the rotor.

REFERENCES:
patent: 1575987 (1926-03-01), Gilman
patent: 1689587 (1928-10-01), Holmes
patent: 2240874 (1941-05-01), Thomas et al.
patent: 2500458 (1950-03-01), Hinckley
patent: 3137238 (1964-06-01), Gordon

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