Multi-speed transmission
US-9217494-B2 · Dec 22, 2015 · US
Multi-speed transmission
US8968142B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8968142-B2 |
| Application number | US-201313897668-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 20, 2013 |
| Priority date | May 20, 2013 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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Abstract
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A transmission gearing arrangement produces nine forward speed ratios and one reverse speed ratio by selective engagement of three shift elements in various combinations. Some embodiment includes four simple planetary gear sets and six shift elements of which one is a brake. Another embodiment includes two axis transfer gear pairs in place of one of the planetary gear sets.
First claim
Opening claim text (preview).
What is claimed is: 1. A transmission comprising: a first gearing arrangement which continuously fixedly constrains a first shaft to rotate faster than an input shaft and in a same direction; a second gearing arrangement which selectively imposes a linear speed relationship in order of a second shaft, the input shaft, and an output shaft; and a third gearing arrangement which fixedly imposes a linear speed relationship in order of a third shaft, the output shaft, and a fourth…
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- F16H3/62Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8968142B2 cover?
- A transmission gearing arrangement produces nine forward speed ratios and one reverse speed ratio by selective engagement of three shift elements in various combinations. Some embodiment includes four simple planetary gear sets and six shift elements of which one is a brake. Another embodiment includes two axis transfer gear pairs in place of one of the planetary gear sets.
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification F16H3/62. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Mar 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).