05323871 is referenced by 85 patents and cites 16 patents.

The present invention is directed to an improved "on-demand" power transfer system of the type having a transfer mechanism incorporated into the driveline of a four-wheel drive vehicle. The transfer mechanism is arranged to deliver drive torque to the driven wheels so as to establish a two-wheel drive mode of operation. In addition, the transfer mechanism is equipped with a clutch assembly for selectively delivering drive torque to the non-driven wheels for establishing a four-wheel drive mode of operation. The transfer mechanism is further equipped with a rotary actuator mechanism for actuating the clutch assembly. The rotary actuator mechanism is preferably mounted directly to the transfer mechanism to substantially minimize the packaging requirements associated with the on-demand power transfer system while concomitantly enhancing in-service reliability and allowing pre-assembly of the transfer mechanism prior to final installation into the vehicle driveline. The power transfer system further includes sensors for detecting various dynamic and operational characteristics of the vehicle and generating sensor input signals indicative thereof, and a controller for controlling actuation of the rotary actuator means in response to the sensor input signals.

Title
Rotary actuation mechanism for torque modulated transfer case
Application Number
8/28952
Publication Number
5323871
Application Date
March 10, 1993
Publication Date
June 28, 1994
Inventor
Joseph A Winks
West Monroe
NY, US
Neville K Divecha
Camillus
NY, US
Richard E Eastman
Central Square
NY, US
David Sperduti
Auburn
NY, US
Robert J Wilson
Warners
NY, US
Agent
Harness Dickey & Pierce
Assignee
New Venture Gear
MI, US
IPC
B60K 17/34
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