Planetary gear transmission systems or components – Differential planetary gearing – Spur gear differential
Patent
1995-03-15
1997-02-04
Marmor, Charles A.
Planetary gear transmission systems or components
Differential planetary gearing
Spur gear differential
475248, 475252, F16H 4806
Patent
active
055992501
ABSTRACT:
In a differential gear system disclosed, a pair of sun gears and a plurality of pairs of planetary gears are received in a housing. The pair of sun gears are coaxial with a rotational axis of the housing. End portions of a pair of drive shafts extending through a pair of end walls of the housing are spline-engaged respectively with the pair of sun gears. The pair of sun gears have helical teeth, respectively. Each pair of intermeshing planetary gears are meshed respectively with the helical teeth of the pair of sun gears, respectively. A plurality of washers are interposed between the pair of sun gears. The plurality of washers have first washers and second washers, respectively, which first and second washers are alternately arranged. The first washers are engaged with end portions of reduced diameters of the sun gears such that the first washers are capable of moving axially but incapable of rotation. The second washers are engaged with the housing such that the second washers are capable of moving axially but incapable of rotation.
REFERENCES:
patent: 4781078 (1988-11-01), Blessing et al.
patent: 5362284 (1994-11-01), Brewer
patent: 5415599 (1995-05-01), Cilano
patent: 5433673 (1995-07-01), Cilano
patent: 5443431 (1995-08-01), Cilano
patent: 5458546 (1995-10-01), Teraoka
patent: 5464084 (1995-11-01), Aoki et al.
Nakajima Shinichiro
Nishiji Makoto
Sachettini Paolo
Sato Hideyuki
Kwon Peter
Marmor Charles A.
Zexel Corporation
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