Power transfer device for four-wheel drive

Details Power transfer device for four-wheel drive Power transfer device for four-wheel drive

1987-05-22

1989-02-07

Braun, Leslie A.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74701, 180249, F16H 144

Patent

active

048023833

ABSTRACT:
A power transfer device for four-wheel drive includes a center differential of the bevel gear type arranged to split the driving torque from a power transmission into two torque delivery paths respectively for front-wheel drive and rear-wheel drive, a front-drive differential of the bevel gear type arranged coaxially with the center differential at one side thereof to transfer the split driving torque from a side gear of the center differential to front-wheel axles, an output gear for rear-wheel drive arranged coaxially with the center differential at the other side thereof to transfer the split driving torque from another side gear of the center differential to rear-wheel axles, and a limited-slip differential in the form of a viscous coupling assembled with a mounting case for the output gear to effect limited-slip torque proportional to the difference in rotational speed between the side gears. In the transfer device, a clutch mechanism is arranged between the center differential and the mounting case for the output gear to selectively render the limited-slip differential inoperative.

REFERENCES:
patent: 4215593 (1980-08-01), Shono et al.
patent: 4237745 (1980-12-01), Katayama et al.
patent: 4520690 (1985-06-01), Dangel
patent: 4582160 (1986-04-01), Weismann et al.
patent: 4601359 (1986-07-01), Weismann et al.
patent: 4643045 (1987-02-01), Katayama
patent: 4645029 (1987-02-01), Sasaki et al.
patent: 4671135 (1987-06-01), Dangel
patent: 4671136 (1987-06-01), Katayama
patent: 4697470 (1987-10-01), Sasaki et al.

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