Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2006-07-19
2008-12-23
Pham, Toan N (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S661000, C340S662000, C340S654000, C007S164000
Reexamination Certificate
active
07468674
ABSTRACT:
A hand tool and an accessory which provide an alarm signal to a user as the tool or accessory approaches a live electrical wire are disclosed. The hand tool or accessory include a non-contact voltage sensing circuit. As the tool or accessory approaches a live electrical wire, the non-contact voltage sensing circuit detects the voltage, triggering an alarm circuit. The alarm circuit provides a visual or audio signal to the user. The hand tool can be selectively coupled to the tool head.
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Applicant's Exhibit A: 1997 Gardner Bender Catalog pages showing Circuit Tester and Screwdriver and Circuit Alert Non-Contact Voltage Tester.
Brockman Daryl C.
Luebke Thomas M.
Onachilla Michael D.
Radle Patrick J.
Steber George R.
Actuant Corporation
Pham Toan N
Quarles & Brady LLP
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