Invention Grant
- Patent Title: Multiple speed automatic transmission
- Patent Title (中): 多速自动变速器
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Application No.: US11728448Application Date: 2007-03-26
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Publication No.: US07670249B2Publication Date: 2010-03-02
- Inventor: Steven G. Thomas , Donald E. Hoffman , Gregory D. Goleski
- Applicant: Steven G. Thomas , Donald E. Hoffman , Gregory D. Goleski
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies, LLC
- Current Assignee: Ford Global Technologies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: MacMillan, Sobanski & Todd, LLC
- Agent David B. Kelley
- Main IPC: F16H3/62
- IPC: F16H3/62

Abstract:
A multi-speed automatic transmission includes an input, an output, a first gear unit drivable connected to the input and including a component rotating at the speed of the input and a first gear unit output, the first gear unit producing a gear ratio of a speed of the input and a speed of the first gear unit output, a planetary gear unit including a modified Simpson gearset, the gear unit being secured to first, second, third, fourth and fifth rotating members, the fifth member being secured to the output for rotation therewith, a first clutch being operable to connect the first rotating member and the first gear unit output, a second clutch being operable to connect the second rotating member and the first gear unit output, a third clutch being operable to connect the third rotating member and an element rotating at a speed of the input, a fourth clutch being operable to connect the fourth rotating member and said element rotating at the speed of the input, a first brake being operable to hold the fourth rotating member against rotation, and a second brake being operable to hold the third rotating member against rotation.
Public/Granted literature
- US20080242470A1 Multiple speed automatic transmission Public/Granted day:2008-10-02
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