192 clutches and power-stop control – Transmission control and clutch control – Common control
Reexamination Certificate
2007-05-14
2011-10-18
Le, David D (Department: 3655)
192 clutches and power-stop control
Transmission control and clutch control
Common control
C192S084600, C074S337500
Reexamination Certificate
active
08037984
ABSTRACT:
A four-wheel-drive-vehicle driving force distribution apparatus has an auxiliary transmission mechanism for switching motive power transmitted to an input shaft at least between two levels, a high speed and a low speed, and transmitting the motive power to a main output shaft; a friction clutch for selectively transmitting the motive power of the main output shaft to an auxiliary output shaft; a ball cam mechanism for changing the pressing force of the friction clutch in a non-step manner; and a shift mechanism for shifting the auxiliary transmission mechanism. A clutch control mechanism is provided between a drive member fixed to an output shaft of a motor and a pinion gear and changes the clutch pressing force caused by the ball cam mechanism corresponding to clockwise rotation of the drive member performed by a motor starting from a control starting point. A shift control mechanism is provided between the drive member and a shifting cylindrical cam and alternately repeating switching between a H position and a L position of the auxiliary transmission mechanism in every counterclockwise reciprocating rotation of the drive member performed by the motor starting from the control starting point.
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European Search Report mailed Oct. 18, 2007 for European Application No. 07009952.8-1254.
Geshi Yuzo
Hirao Kiyonori
Nakano Hiroyuki
Suzuki Satoru
Suzuki Tsutomu
Dodd Ryan
Le David D
Univance Corporation
Wenderoth , Lind & Ponack, L.L.P.
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