Planetary gear transmission systems or components – Variable speed or direction transmission combined with... – Variable speed or direction is planetary transmission
Patent
1994-07-12
1996-04-02
Ta, Khoi Q.
Planetary gear transmission systems or components
Variable speed or direction transmission combined with...
Variable speed or direction is planetary transmission
475150, 475205, 192 35, 192 94, F16D 1304, F16D 4100, F16H 4830, F16H 3708
Patent
active
055036023
ABSTRACT:
A clutch actuating device for use in a vehicle drivetrain subassembly having a clutch and a rotatable drive member, including first and second rotating members which are rotatably mounted to the drive member and are free to rotate relative to one another and relative to the drive member. The first and second rotating members engage one another so as to cause axial translation relative to one another in response to relative rotation between one another due to the engagement of ramp surfaces included on each member or, alternatively, due to the engagement of screw threads formed on each member. A gear system is connected to the first and second rotating members for differentially driving them and for controlling a direction of rotation of the rotating members relative to the drive member. First and second pilot clutches, are connected to the gear system and the pilot clutches are selectively activated, and selectively grounded. Activation of one of the pilot clutches causes relative rotation between the first and second rotating members which results in engagement of the drivetrain subassembly clutch, and activating the other of the pilot clutches causes relative rotation between the first and second rotating members which results in disengagement of the drivetrain subassembly clutch. In a preferred embodiment, the first and second rotating members are attached to, and may be integrally formed with, first and second ring gears of a planetary gear set.
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U.S. Patent Application by Dick et al., in its entirety, having S/N 08/273,722, filed Jul. 12, 1994 entitled "Clutch Actuating Device For Use In A Vehicle Drivetrain Subassembly".
U.S. Patent Application by Dick, in its entirety, having S/N 08/273,868, filed Jul. 12, 1994 entitled "ClutchActuating Device For Use In A Vehicle Drivetrain Subassembly".
Dana Corporation
Ta Khoi Q.
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