Electricity: measuring and testing – Conductor identification or location – Inaccessible
Patent
1998-07-20
2000-12-19
Strecker, Gerard
Electricity: measuring and testing
Conductor identification or location
Inaccessible
324133, 324529, G01R 1908, G01R 19145, G01R 3102
Patent
active
061631442
ABSTRACT:
An electrical circuit finder has a transmitter which is plugged into one of the circuits of a building's electrical system and a receiver which is used to identify other elements of the circuit such as a circuit breaker, fuse, switch, electrical device or outlet. The transmitter induces in the circuit a high frequency current signal which is modulated at a lower frequency. The receiver, including a sensor wand and a receiver housing, is tuned to inductively detect the high frequency when placed in the magnetic field of the circuit and to produce visual and audible signals to the user which vary in intensity according to the detected signal. The user can thereby use his or her visual and/or audio senses to associate a circuit element proximate to the receiver with the circuit element connected to the transmitter.
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Applicant's Exhibit A--Ad page entitled "Positive I.D. With Ideal E-Z Check.RTM. Plus Circuit Identifier" of Ideal Industries, Inc., Sycamore, IL 60178, admitted prior art. (No Date).
Applicant's Exhibit B--Copy of both sides of packaging backing card of "Circuit Detective" of Northern Continental Technologies and copy of instructions for same. (No Date).
Applicant's Exhibit C--Cover, back, and p. 49 of Amprobe Test & Measurement catalog AC96, dated Feb. 1996, showing Amprobe BT-100 Breaker Tracer.
Applicant's Exhibit D--p. 2 of A.W. Sperry Instruments Inc. catalog showing Model CS-500A Circuit Breaker Finder, and front and back of packaging backing card for same, admitted prior art. No Date.
Applicant's Exhibit E--Copy of Instruction and Safety Manual for Greenlee 2007 Power Finder Circuit Tracer of Greenlee Textron Inc., Rockford, IL, dated Aug. 1992.
Luebke Thomas M.
Steber George R.
Wiesemann David L.
Applied Power Inc.
Strecker Gerard
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