Multi-speed transmission
US9175748B2 · kind B2 · utility
47Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2013 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Feb 6, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2082
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A transmission gearing arrangement produces eleven forward speed ratios and one reverse speed ratio by selective engagement of three shift elements in various combinations. One embodiment includes four simple planetary gear sets, four clutches, and two brakes. Another embodiment includes two axis transfer gear pairs, three simple planetary gear sets, four clutches, and two brakes. Each of these embodiments may include a one way brake such that the first shift is non-synchronous. A third embodiment includes four simple planetary gear sets, four brakes, and two clutches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.