Electronic proximity switch
US7394368B2 · kind B2 · utility
2Cited by
7References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 26, 2006 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Oct 10, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/96072
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An electronic proximity switch employs two oscillators coupled through two electrical paths, one associated with an antenna serving as a proximity switch sensor. Absorption by an object near the antenna changes the coupling between the oscillators producing a dramatic phase shift that may be detected and used for switching purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.