Multi-speed automatic transmission
US8951160B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2013 |
| Grant date | Feb 10, 2015 |
| Priority date | — |
| Expiry date | Jun 7, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2046
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An multi-speed automatic transmission providing at least nine forward speeds and one reverse speed, includes four planetary gear sets, six shift control elements, an input shaft, an output shaft, and a transmission case. Each planetary gear set includes a sun gear, a pinion gear set, a carrier that rotatably supports the pinion gear set, and a ring gear. A carrier of a first planetary gear set is connected to the ring gear of a second planetary gear set and a carrier of the second planetary gear set is connected to the ring gear of the first planetary gear set. The first and second planetary gear sets are concentrically arranged in a common plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.