Automatic transmission
US7582035B2 · kind B2 · utility
2Cited by
7References
9Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 29, 2006 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Sep 30, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2306/50
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automatic transmission is capable of shifting between multiple speeds by engaging and disengaging multiple frictional engagement devices including at least one clutch and one brake, and is capable of switching between a driving range and a non-driving range with operation of a shift lever, wherein a first brake is engaged to fix an intermediate rotary member to a transmission case in a non-driving range such as neutral range. Thus, rotation of a clutch from drag torque can be stopped and shock due to engagement of a brake can be prevented by engagement of the first brake in the non-driving range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.