Invention Grant
- Patent Title: Transmission having at least eight speeds
- Patent Title (中): 传输速度至少为8档
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Application No.: US13468344Application Date: 2012-05-10
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Publication No.: US08414445B2Publication Date: 2013-04-09
- Inventor: Clinton E. Carey , James M. Hart , Andrew W. Phillips , Scott H. Wittkopp
- Applicant: Clinton E. Carey , James M. Hart , Andrew W. Phillips , Scott H. Wittkopp
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Main IPC: F16H3/62
- IPC: F16H3/62

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 eight forward speed ratios and at least one reverse speed ratio.
Public/Granted literature
- US20120225747A1 TRANSMISSION HAVING AT LEAST EIGHT SPEEDS Public/Granted day:2012-09-06
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