Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1976-11-30
1978-02-14
Strecker, Gerard R.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 66, 324 73R, G01R 3102
Patent
active
040741877
ABSTRACT:
Apparatus is described for detecting the presence of a variety of electrical faults in a multi-pair shielded cable from a junction box connected to the cable at one end and to a socket connected to the cable at the other end. The apparatus includes a first module which is adapted to be connected to the appropriate set of terminals of a main junction box connected to one end of the cable and a second module which is adapted to be connected to the socket at the other end of the cable. To use the apparatus each module is connected to its respective termination. The first module includes a battery, a termination and a plurality of light emitting diodes, resistors and switches arranged to give a visual indication of faults in the form of shorts between two wires in the cable, shorts between one wire in the cable and the grounding shield and continuity between a pair of wires in the cable. The second module includes a termination and a plurality of light emitting diodes connected to the terminals of the termination in a manner so as to give a visual indication of the polarity of a pair of companion wires in the cable and cable identification of the pairs of wires in the cable.
REFERENCES:
patent: 2964701 (1960-12-01), Argabright
patent: 3131347 (1964-04-01), Brooks et al.
patent: 3217244 (1965-11-01), Glover
patent: 3375334 (1968-03-01), Robinson
patent: 3609538 (1971-09-01), Schag
patent: 3867692 (1975-02-01), Esch
patent: 3982180 (1976-09-01), Vaiden
patent: 3986106 (1976-10-01), Shuck et al.
Mena Peter M.
Miller David H.
Kriegsman Irving M.
Strecker Gerard R.
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