Planetary gear drive train

Details Planetary gear drive train Planetary gear drive train

1999-02-15

2000-06-27

Estremsky, Sherry L.

Planetary gear transmission systems or components

Planetary gearing or element

Coaxial teeth around planet pinion engage axially spaced...

475149, 180372, F16H 5708

Patent

active

060800771

ABSTRACT:
A differential drive train for driving two laterally opposite axially aligned driven units, for example wheel hubs, in the same rotational direction has a motor with a motor housing and motor shaft, with a shaft affixed to the housing so as to rotate in a direction opposite from the motor shaft. A planetary gear cluster is mounted adjacent an outer end of each of the shafts so as to provide a gear reduction between the shaft and an output gear. One of the planetary gear clusters drives its output gear, which is fixed to the driven unit, in a direction opposite from its input shaft. The input shafts extend through their respective planetary gear clusters so as to mount their respective driven units on bearings on the input shaft and drive the planetary gear cage. Between the motor and the planetary gear clusters, the input shafts extend through stationary tubes to which the stationary gears are affixed.

REFERENCES:
patent: 1808748 (1931-06-01), Apple
patent: 1998891 (1935-04-01), Benson
patent: 4043326 (1977-08-01), Buuck
patent: 4380274 (1983-04-01), Abraham et al.
patent: 5472387 (1995-12-01), Kamlukin
patent: 5692989 (1997-12-01), Kamlukin
patent: 5759128 (1998-06-01), Mizutani et al.
Applicant's Exhibit B--"R-factors quickly give speed ratios of Planetary gear systems", article in Product Engineering, Jan. 6, 1994, pp. 59-68.
Applicant's Exhibit A--Page describing "Planetary Epicyclic Drive", admitted prior art.

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