Transmission, particularly automatic transmission, with several shifting elements
US6962549B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2003 |
| Grant date | Nov 8, 2005 |
| Priority date | — |
| Expiry date | Aug 28, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19223
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A transmission is described, in particular an automatic transmission, which has several shift control elements (A, B, C, D, E) and several gearwheels (2, 3) which can be engaged via the shift control elements (A to E) to form a power flow, in which, to establish a transmission ratio in each case at least one of the shift control elements (A to E) is closed. The shift control elements (B, C, E), which are engaged during an up-shift, are formed as frictional shift control elements, and the shift control elements (A, D), which during up-shifts respectively only constitute a shift control element to be disengaged, are made as positive-locking gear elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.