Planetary gear transmission systems or components – Differential planetary gearing – With universal joint in drive train
Reexamination Certificate
2011-04-19
2011-04-19
Wright, Dirk (Department: 3655)
Planetary gear transmission systems or components
Differential planetary gearing
With universal joint in drive train
Reexamination Certificate
active
07927246
ABSTRACT:
The rotation of a first rotating element is shifted in speed by a speed shift device, and is transmitted to a second rotating element or a third rotating element of a differential device via a first clutch or a second clutch. In this manner, the torque of right and left driving wheels can be controlled. Furthermore, in conjunction with limitation of the differential motion, the amount of torque transmitted to a fourth rotating element is eliminated by allowing the speed shift device to freely rotate, and the accumulated amount of sliding of friction engagement elements at the time of differential motion limitation can be reduced by completely engaging the first clutch and the second clutch without allowing them to slide. Thus, the differential motion limitation control can be realized without a need to increase the size of the first clutch and the second clutch.
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Ando Koji
Ikushima Yoshihiro
Miyazaki Akifumi
Suzuki Hirokazu
Tamoto Hideki
Oliff & Berridg,e PLC
Toyota Jidosha & Kabushiki Kaisha
Wright Dirk
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