Electric field whistle
US7944361B2 · kind B2 · utility
2Cited by
3References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 2008 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Nov 11, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D45/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In one embodiment, an electric field sensor is provided including an elongated conductor; a circuit including an input and an output connected across the elongated conductor wherein said circuit includes a DC to AC signal converter; wherein said elongated conductor is operative to impose a DC signal on said circuit input in response to being exposed to an electric field and broadcast an AC signal converted from said DC signal in response to said electric field being greater than a threshold level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.