Anti-theft electrical power cord

Details Anti-theft electrical power cord Anti-theft electrical power cord

1999-08-10

2000-11-21

Lee, Benjamin C.

Communications: electrical

Condition responsive indicating system

Specific condition

3405682, 340571, 340657, 340687, 200 6159, G08B 1314

Patent

active

06150940&

ABSTRACT:
An anti-theft power cord for use with electrical devices has sensors for detecting removal of the cord from an electrical receptacle and for detecting the removal of the cord from the device sought to be protected. Control systems associated with each of the sensors activate alarms when receiving signals from the sensors. The control systems, comprising microcontrollers, also communicate with one another along the power cord and will sound an alarm if the cord is cut. A battery backup system is provided to allow the power cord to function as an anti-theft device even during a power failure without sounding false alarms.

REFERENCES:
patent: 3537095 (1970-10-01), Cones
patent: 3618065 (1971-11-01), Trip et al.
patent: 4680574 (1987-07-01), Ruffner
patent: 4736195 (1988-04-01), McMurtry et al.
patent: 4945341 (1990-07-01), Buttimer
patent: 5059948 (1991-10-01), Desmeules
patent: 5243328 (1993-09-01), Lee et al.
patent: 5418521 (1995-05-01), Read
patent: 5525965 (1996-06-01), Liebenthal
patent: 5818345 (1998-10-01), Sjooquist

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