Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Scott H. Wittkopp0
Clinton E. Carey0
James M. Hart0
Madhusudan Raghavan0
Andrew W. Phillips0
Date of Patent
May 24, 2011
0Patent Application Number
118323550
Date Filed
August 1, 2007
0Patent Primary Examiner
Patent abstract
The transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The transmission includes three planetary gear sets, six torque-transmitting devices, two fixed interconnections and a grounded member. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting devices provide interconnections between various gear members, and the transmission housing, and are operated in combinations of two to establish eight forward speed ratios and one reverse speed ratio.
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