Metal face inductive proximity sensor
US8154278B2 · kind B2 · utility
5Cited by
10References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 14, 2008 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Aug 20, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/9545
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Metal face inductive proximity sensors and methods are presented for sensing the presence or absence of a target object in a target sensing area in which a coil system is operated to generate a magnetic field extending outward from the sensing face at a frequency in a range that maximizes a relative target effect for the sensing face area, material, and thickness, and a target material from which the target object is made to allow the protective advantages of metal sensing face materials while enhancing sensing distance by optimizing the ratio of the target energy loss to the energy loss in the metal face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.