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
September 21, 2010
Patent Application Number
11780645
Date Filed
July 20, 2007
Patent 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 having six torque-transmitting mechanisms, one fixed interconnection 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 mechanisms provide interconnections between various gear members, and the transmission housing, and are operated in combinations of three to establish eight forward speed ratios and one reverse speed ratio.
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