Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
November 13, 2007
Patent Application Number
11005187
Date Filed
December 6, 2004
Patent Citations Received
Patent Primary Examiner
Patent 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.
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