Invention Grant
- Patent Title: Multi-speed transmission
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Application No.: US12372309Application Date: 2009-02-17
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Publication No.: US07985159B2Publication Date: 2011-07-26
- Inventor: Andrew W. Phillips , Clinton E. Carey , Scott H. Wittkopp , James M. Hart
- Applicant: Andrew W. Phillips , Clinton E. Carey , Scott H. Wittkopp , James M. Hart
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Main IPC: F16H3/44
- IPC: F16H3/44

Abstract:
A transmission of the present invention has an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes. The torque transmitting devices are selectively engageable in combinations of at least three to establish at least nine forward speed ratios and at least one reverse speed ratio.
Public/Granted literature
- US20100210401A1 MULTI-SPEED TRANSMISSION Public/Granted day:2010-08-19
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