Invention Grant
- Patent Title: Eight to thirteen speed automatic transmission
- Patent Title (中): 八到十三速自动变速器
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Application No.: US12685532Application Date: 2010-01-11
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Publication No.: US08152683B2Publication Date: 2012-04-10
- Inventor: Andrew W. Phillips
- Applicant: Andrew W. Phillips
- 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:
An eight, nine, eleven or thirteen speed automatic transmission has an input and output, four planetary gear assemblies, four connecting members for coupling certain elements of the planetary gear assemblies to other elements, four brakes for selectively connecting certain elements of the planetary gear assemblies to ground and three friction clutches for selectively connecting certain elements of the planetary gear assemblies to other elements. Sequenced operation of the brakes and clutches provides, eight, nine, eleven or thirteen forward speeds or gear ratios and reverse.
Public/Granted literature
- US20100331138A1 EIGHT TO THIRTEEN SPEED AUTOMATIC TRANSMISSION Public/Granted day:2010-12-30
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