Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1990-03-01
1991-07-23
Swann, III, Glen R.
Communications: electrical
Condition responsive indicating system
Specific condition
340652, 340687, 439489, G08B 2100
Patent
active
050347233
ABSTRACT:
A cable for supplying power to electrical equipment is adapted to also provide security for the equipment by being formed to have a first state when it is connected to the equipment and a second state when it is disconnected from the equipment, whereby detection of the states of the cable permit detection of removal of the equipment which can then be communicated through repair AC power lines to a central station.
REFERENCES:
patent: 4121201 (1978-10-01), Weathers
patent: 4390868 (1983-06-01), Garwin
patent: 4584570 (1986-04-01), Dotson
No affiliations
Kirk Douglas
Nynex Corporation
Swann III Glen R.
Torrente John J.
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