Voltage sensing hand tool
US7295130B2 · kind B2 · utility
6Cited by
12References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2004 |
| Grant date | Nov 13, 2007 |
| Priority date | — |
| Expiry date | Nov 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R1/06788
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A hand tool which provides an alarm signal to a user as the tool approaches a live electrical wire is disclosed. The hand tool comprises a tool head and coupled to a handle. A non-contact voltage sensing circuit is provided in the handle of the tool. As the tool approaches a live electrical wire, the non-contact voltage sensing circuit detects the voltage across the air gap between the tool head and the electrical wire, triggering an alarm circuit. The alarm circuit provides a visual or audio signal to the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.