Four wheel drive vehicle

Details Four wheel drive vehicle Four wheel drive vehicle

1987-04-13

1988-12-20

Mitchell, David M.

Motor vehicles

Having four wheels driven

180 531, 180247, 180248, 192 67A, 192 93A, B60K 1734, B60K 2308

Patent

active

047920106

ABSTRACT:
A four wheel drive vehicle comprising an engine, a transmission connected to the engine, a front wheel drive line, a rear wheel drive line, and an automatic switch mechanism for operatively connecting the front wheel and rear wheel drive lines to the transmission to selectively provides a two wheel drive mode and a four wheel drive mode. The front wheel drive line and the rear wheel drive lines are constructed such that front wheels are driven at a lower speed than rear wheels. The automatic switch mechanism includes an input portion connected to the transmission, a first output portion connected to the front wheel drive line, a second output portion connected to the rear wheel drive line, and a clutch for connecting the first and second output portions to the input portion. The clutch is operable to disconnect the first output portion from the input portion upon receipt of a torque exceeding a predetermined value.

REFERENCES:
patent: 4597467 (1986-07-01), Stockton
patent: 4650028 (1987-03-01), Eastman et al.
patent: 4650029 (1987-03-01), Foote et al.

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