Differential gear drive having two output shafts between which t

Details Differential gear drive having two output shafts between which t Differential gear drive having two output shafts between which t

1986-04-09

1987-11-10

Braun, Leslie

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74711, 192 93A, F16H 142, F16H 144

Patent

active

047049219

ABSTRACT:
A differential gear drive having two output shafts each coupled through a differential gear train to a common input gear. The differential gear train comprises an annulus gear engaging the input gear, planet gears and a sun wheel. The output shaft is connected to a planet carrier and the output shaft is connected to the sun wheel. A pair of cam rings are rotatably coupled to the respective output shafts and are respectively coupled via clutch teeth to clutch rings respectively, which are engageable separately with a pair of meshing reference gears. The reference gear is rotatably fixed by a countershaft to the input gear. When both output shafts are driving against substantially equal torques the clutch rings are both disengaged from the reference gear and so the drive to each shaft is via the differential gear train. However when one of the output shafts commences to loose resistance torque, the respective clutch ring engages the reference gear and so a reaction via the reference gears is provided for the other output shaft, thereby maintaining traction in the case of a motor vehicle.

REFERENCES:
patent: 1336643 (1920-04-01), Lowry
patent: 3572165 (1971-03-01), Roper
patent: 4022308 (1977-05-01), Hurst
patent: 4189038 (1980-02-01), Hurst
patent: 4535651 (1985-08-01), Chambers

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