Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1988-10-13
1989-11-28
Bonck, Rodney H.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74710, 74711, F16H 144
Patent
active
048829498
ABSTRACT:
A differential for a motor vehicle is locked in straight-ahead driving. The differential has a pair of output shafts rotatably supported and inserted into a cylindrical differential case, and a pair of carriers provided in the differential case and secured to the output shafts respectively. A pair of annular side gears are securely provided in the differential case, and an annular center gear is rotatably mounted in the differential case between the side gears. A pair of planetary gears are rotatably supported in the corresponding carrier. Each planetary gear comprises a pair of planetary pinions, one of which is engaged with the side gear and the other is engaged with the center gear. The gear ratio between one of the planetary pinion and the center gear is different from the gear ratio of the other planetary pinion and the center gear. For example if the numbers of teeth of both side gears are S.sub.1 and S.sub.2, the numbers of teeth of gears of the center gears are C.sub.1 and C.sub.2, the numbers of teeth of the planetary pinions for one of the output shafts are P.sub.1 and P'.sub. 1 and the numbers of teeth of the planetary pinions for the other output shaft are P.sub.2 and P'.sub.2. (S.sub.1 .multidot.P'.sub.1 /C.sub.1 .multidot.P.sub.1)+(S.sub.2 .multidot.P'.sub.2 /C.sub.2 .multidot.P.sub.2).apprxeq.2.
REFERENCES:
patent: 2788679 (1957-04-01), Mott
patent: 2791919 (1957-05-01), Wildhaber
patent: 3420121 (1969-01-01), Stieg
patent: 3494226 (1970-02-01), Biddle
patent: 4535651 (1985-08-01), Chambers
Bonck Rodney H.
Farber Martin A.
Fuji Jukogyo Kabushiki Kaisha
Gehris William
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