Motor vehicles – Having four wheels driven – With manually operated means for disengaging drive to one or...
Patent
1984-12-24
1987-05-12
Love, John J.
Motor vehicles
Having four wheels driven
With manually operated means for disengaging drive to one or...
743375, 192 0092, 192 355, B60K 2308
Patent
active
046642170
ABSTRACT:
A shift actuator for a vehicle transfer case includes a bidirectional electric motor for positioning gearing in the transfer case. An indicator mechanism associated with the drive train between the motor and the transfer case provides electrical signals indicative of the actual position in, and thus operating state, of the gearing in the transfer case. A selector switch provides electrical signals indicative of a desired operating state of the transfer case gearing. An electronic control is responsive to an input from the selector switch and to the indicator mechanism for effecting rotation of the motor in a predetermined one or other direction to attain the desired operating state. The indicator mechanism includes a contact plate, which rotates with the drive train, and a set of stationary contacts. A conductive pattern on the contact plate identifies the positioning of the operating states of the transfer case gearing. Signals indicating the condition of the vehicle, as its speed and the state of its transmission, serve to allow or to inhibit certain responses to certain selected states of the transfer case gearing.
REFERENCES:
patent: 2823345 (1958-02-01), Ragland
patent: 3089571 (1963-05-01), Schick
patent: 3280946 (1966-10-01), Guibeaud
patent: 3283298 (1966-11-01), Kaiser
patent: 4421335 (1983-12-01), Makishima
Czarnecki Carl G.
DiTucci Joseph
Welch David W.
Diederiks, Jr. Everett G.
Love John J.
Schneeberger Stephen A.
United Technologies Electro Systems Inc.
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