Shift control system for a multiple ratio automatic transmission with manual ratio ranges
US5586029A · kind A · utility
13Cited by
13References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1995 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Sep 11, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S477/908
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A multiple ratio transmission for an automotive vehicle comprising a main gear unit with at least three ratios and an overdrive gear unit with a direct drive ratio and an overdrive ratio, and a control valve system that will permit upshifting and downshifting of the overdrive gear unit while inhibiting ratio changes in said main gear unit from either a second ratio manual drive mode or from a third ratio manual drive mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.