Fall away transmission shift shaft switch profile
US6683263B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2002 |
| Grant date | Jan 27, 2004 |
| Priority date | — |
| Expiry date | Dec 18, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2300/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A transmission gear position sensing assembly includes a transmission housing with a bore having a shift shaft disposed therein. The shift shaft has an axis about which the shaft translates as the transmission is shifted between gear positions. The housing includes a hole with a switch assembly received in the hole transverse to the shift shaft axis. The shift shaft includes a profile aligned with the switch assembly. The profile has first, second, and third surfaces respectively spaced radially from the axis a first, second and third distance. The third surface is arranged between the first and second surfaces. The third distance is larger than the first and the second distances, and the third surface corresponds to a neutral gear position. The switch assembly includes a member biased to engagement with the profile by a spring. The switch assembly senses the gear precision by the corresponding location along the profile. Since the third surface, which corresponds to the neutral position, is raised from the other surfaces the shift effort is reduced as the vehicle operator shifts from the neutral position to one of the other gear positions. In this manner, the switch assembly and s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.