Method and apparatus for capacitive sensing of door position
US7538672B2 · kind B2 · utility
52Cited by
67References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2006 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Feb 18, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/08
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An apparatus has a sensor with an electrically conductive ground member, electrically conductive first and second parts spaced from and proximate to each other and the ground member, and an insulator disposed between the ground member and the first and second parts. A different configuration involves a tag having circuitry, and a sensor supported on the tag and having electrically conductive first and second parts that are spaced from and proximate to each other, the first and second parts each being electrically coupled to the circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.