Motor vehicles – Having four wheels driven – With manually operated means for disengaging drive to one or...
Patent
1988-04-27
1989-08-08
Marmor, Charles A.
Motor vehicles
Having four wheels driven
With manually operated means for disengaging drive to one or...
180248, 74665GE, B60K 1734
Patent
active
048544132
ABSTRACT:
A transfer case operating apparatus for shifting a part-time four-wheel transfer case of a vehicle having a transfer gear assembly and a center-differential gear assembly, with their associated gear shift devices. The operating apparatus comprises a power drive actuator coupled to one of the shift devices; a mechanical actuator directly coupled to the other; a shift control device operated by a driver in the driver's compartment of the vehicle shift the transfer case between at least two-wheel high-speed drive mode; four-wheel, differential-free drive mode; and four wheel, differential-locked, low-speed drive mode; and a mechanism for, when the shift control device is operated to shift one gear assembly associated to the power drive actuator, disconnecting the mechanical actuator from the shift control device so as not to shift the other gear assembly. The mechanism works with different operating forces for causing the power drive and mechanical actuators.
REFERENCES:
patent: 4562541 (1985-12-01), Sakakiyama
patent: 4644822 (1987-02-01), Batchelor
Kameda Osamu
Tabata Shigeo
Marmor Charles A.
Mazda Motor Corporation
McGiehan Donn
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