Multi-speed transmission with compound and simple planetary gear sets and with layshafts

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United States of America Patent

PATENT NO 8360925
APP PUB NO 20110212807A1
SERIAL NO

12954939

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A transmission is provided that includes a first compound planetary gear set and a second simple planetary gear set. An input member, an output member and the planetary gear sets are arranged coaxially with one another to define a first axis of rotation. A first and a second layshaft are arranged coaxially with one another to define a second axis of rotation. A first set of intermeshing gears transfer torque from the input member to the first layshaft. A second set of intermeshing gears transfer torque from the second layshaft to the second planetary gear set. Seven torque-transmitting mechanisms are engagable in different combinations to establish multiple forward speed ratios and a reverse speed ratio between the input member and the output member.

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Patent Owner(s)

Patent OwnerAddress
GM GLOBAL TECHNOLOGY OPERATIONS LLCP O BOX 300 MAIL CODE 482-C23-B21 DETROIT MI 48265-3000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Astashev, Vladimir Konstantinovich Moscow, RU 10 132
Kraynev, Alexander Filippovich Moscow, RU 10 132
Raghavan, Madhusudan West Bloomfield, US 303 7710
Salamandra, Konstantin Borisovich Moscow, RU 11 162

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