Voltage sensing hand tool

Details Voltage sensing hand tool Voltage sensing hand tool

2005-01-18

2005-01-18

Pham, Toan N. (Department: 2632)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S661000, C340S662000, C340S654000

Reexamination Certificate

active

06844819

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 conductive tool head and a non-conductive handle. A non-contact voltage sensing circuit is provided in the handle of the tool. As the tool head 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.

REFERENCES:
patent: 4716371 (1987-12-01), Blitshteyn et al.
patent: 4724382 (1988-02-01), Schauerte
patent: 5103165 (1992-04-01), Sirattz
patent: 5363045 (1994-11-01), Martin et al.
patent: 5877618 (1999-03-01), Luebke et al.
patent: 6100679 (2000-08-01), McCasland
patent: 6118270 (2000-09-01), Singer et al.
patent: 6278952 (2001-08-01), Swain
patent: 6424139 (2002-07-01), Bystrom et al.
Applicant's Exhibit A: 1997 Gardner Bender Catalog pages showing Circuit Tesler and Screwdriver and Circuit Alert Non-Contact Voltage Tester.

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