Automatic transmission
US6875149B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2003 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | Jul 17, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2025
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automatic transmission having seven gear speeds for forward driving is provided, in which a planetary gear P1 of a first planetary gear set 12 and an outer planetary gear P2out of a second planetary gear set 14 are integrally coupled, a first rotational element M1 is formed by a sun gear S1, a second rotational element M2 is formed by carriers CA1, CA2 coupled with each other, a third rotational element M3 is formed by a ring gear R2, a fourth rotational element is formed by a ring gear R1, and a fifth rotational element M5 is formed by a sun gear S2. The rotational elements M5, M3, M2 are connectable to an input shaft 16 via clutches C1, C2, C3, respectively, and the rotational elements M3, M2, M1 are connectable to a case 20 via brakes B1, B2, B3, respectively. The rotational element M4 is integrally coupled with an output gear 18.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.