Apparatus and method for position encoding
US6140916A · kind A · utility
6Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1994 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Feb 7, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19279
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A transfer case motor controls the rotation of a cam. The cam actuates various gear states of a transfer case of a four-wheel-drive vehicle. A contact plate rotates with the cam and encodes the position of the cam as a four-bit binary code. The code is such that when the cam travels between any two gear states, one bit of the four-bit code stays constant from the initial gear state until the final gear state is reached. The single bit can thus be observed to determine that the final gear state has been reached. The encoding scheme is also such that the bit which stays constant always assumes the same state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.