Control unit for an automatic transmission
US5709134A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1996 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Oct 29, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2186
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A control unit for an automatic transmission in a motor vehicle includes a housing having an open bottom part with an interior. A carrier is disposed in the housing. Circuit components are disposed on the carrier. Valve coils for electromagnetic hydraulic valves are disposed in the housing and embedded in a flexible compound. A rotational-speed sensor disposed in the interior of the open bottom part is embedded in the flexible compound and thus fixed in its position in the housing. The rotational-speed sensor extends into the vicinity of a gearwheel or of some other rotating component of the transmission and detects or records its rotary motion by induction or the Hall effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.