Transmission with mixed planetary layshaft structure

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8439787
APP PUB NO 20110230298A1
SERIAL NO

12954931

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A transmission includes an input member, an output member, a first and a second intermediate member, and a planetary gear set, all of which are coaxial and define a first axis of rotation. A first and a second layshaft are arranged to define a second axis of rotation and a third axis of rotation, respectively. Each of five sets of intermeshing gears transfer torque from a respective one of the intermediate members to a respective one of the layshafts via engagement of different respective ones of nine torque-transmitting mechanisms. A set of transfer gears transfers torque from the layshafts to the output member. One of the torque-transmitting mechanisms grounds a member of the planetary gear set to a stationary member. The nine torque-transmitting mechanisms are engagable in different combinations to establish up to eight forward speed ratios and at least one reverse speed ratio.

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Patent Owner(s)

Patent OwnerAddress
GM GLOBAL TECHNOLOGY OPERATIONS LLCP O BOX 300 DETROIT MI 48265-3000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Oreshkin, Vadim Evgenievich Moscow, RU 1 15
Raghavan, Madhusudan West Bloomfield, US 303 3855
Salamandra, Konstantin Borisovich Moscow, RU 11 81

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