Non-contact capacitive sensor and cable with dual layer active shield
US6989679B2 · kind B2 · utility
16Cited by
14References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2004 |
| Grant date | Jan 24, 2006 |
| Priority date | — |
| Expiry date | Jun 3, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A non-contact capacitive sensor probe including a metallic sensor having a first surface opposite a dielectric medium to be sensed; a plurality of active metallic shields adjacent to the metallic sensor, each of the active metallic shields having a pattern of grooves inhibiting eddy currents on a surface of the shield, wherein the pattern on one shield does not overlap with the pattern on a second shield, and a passive metallic shield adjacent the active metallic shields, such that active metallic shields are sandwiched between the metallic sensor and the passive metallic shield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.