Automatic transmission device
US9062746B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 27, 2013 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Feb 27, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2064
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automatic transmission device that changes a relative speed between an input and output member. The transmission configured with a first planetary gear mechanism including first to third rotary elements, a second planetary gear mechanism including fourth to sixth rotary elements, a third planetary gear mechanism including seventh to ninth rotary elements, and a fourth planetary gear mechanism including tenth to twelfth rotary elements. A first coupling between the third and eighth rotary element, a second coupling between the fifth and eleventh rotary element, a third coupling between the sixth and twelfth rotary element, a fourth coupling between the seventh and tenth rotary element. A first clutch between the first and third coupling, a second clutch between the first rotary element and the third coupling element, a third clutch between the first and fourth rotary element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.