Planetary gear train of automatic transmission for vehicle
US9850985B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2016 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Jun 9, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2097
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving torque of an engine, an output shaft outputting changed torque of the engine, a first planetary gear set including first, second, and third rotation elements, a second planetary gear set including fourth, fifth, and sixth rotation elements, a third planetary gear set including seventh, eighth, and ninth rotation elements, a fourth planetary gear set including tenth, eleventh, and twelfth rotation elements, and six friction elements selectively connecting the rotation elements, or selectively connecting at least one rotation element and a transmission housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.