Fly-by-wire limp home and multi-plex system
USRE42131E1 · kind E1 · reissue
8Cited by
12References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2008 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | May 2, 2028 |
Classification
- Technology area (CPC —)General
Abstract
An electro-hydraulic control mechanism for use with a multi-speed transmission includes a pair of logic valves, which are manipulated during the ratio interchanges and the ratio establishment by aiding in the distribution of fluid pressure from a plurality of trim valves. The logic valves are retained in specific drive ranges in the event of electrical discontinuance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.