Motor vehicles – Having four wheels driven
Patent
1993-03-09
1994-07-19
Focarino, Margaret A.
Motor vehicles
Having four wheels driven
180247, 180249, B60K 1734
Patent
active
053300300
ABSTRACT:
The present invention provides a power transfer system for a four-wheel drive vehicle which permits the vehicle operator to choose between operation in conventional two-wheel drive and four-wheel drive modes or an "on-demand" four-wheel drive mode. The power transfer system is operable for disabling the on-demand four-wheel drive feature upon the vehicle operator subsequently shifting into either of the two-wheel drive and the four-wheel drive modes. The system includes a transfer mechanism having a first and second output members coupled to first and second sets of wheels, respectively. The transfer mechanism has a transfer clutch that is operable for transferring drive torque from the first output member to the second output member to establish the part-time four-wheel drive and on-demand modes. A coupling mechanism is provided for mechanically coupling the first and second output members under certain conditions.
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Adler Randy W.
Eastman Richard E.
Sperduti David
Wilson Robert J.
Focarino Margaret A.
Johnson Victor E.
New Venture Gear Inc.
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