Gear transmission for automatic transmissions
US5525117A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1994 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Nov 8, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2186
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gear transmission which is enabled to set six forward gear stages by spraying a Ravigneaux planetary gear mechanism and a double-pinion planetary gear mechanism coaxially with an input shaft. The double-pinion planetary gear mechanism and its associated frictional engagement elements are arranged at the side of the input shaft across a partition protruded from the inner face of a casing, whereas tile Ravigneaux planetary gear mechanism is arranged at the opposite side to the double-pinion planetary gear mechanism. Moreover, the Ravigneaux planetary gear mechanism has a ring gear acting as an output element, and a counter gear is connected to the ring gear and arranged adjacent to the partition while being supported by the partition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.