Automatic transmission
US8147372B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2010 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Sep 8, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2048
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automatic transmission includes a first single-pinion planetary gear mechanism including a first sun gear, a first ring gear, and a first carrier that respectively correspond to first to third elements in a velocity diagram. A second single-pinion planetary gear mechanism includes a second sun gear, a second ring gear, and a second carrier that respectively correspond to fourth to sixth elements in a velocity diagram. The fourth element is connected to the first element to form a first connected body. A double-pinion third planetary gear mechanism includes a third sun gear, a third ring gear, and a third carrier that respectively correspond to seventh to ninth elements in a velocity diagram. The ninth element is connected to the third element to form a second connected body. The eighth element is connected to the fifth element to form a third connected body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.