Magnetically linked theft sensing system

Details Magnetically linked theft sensing system Magnetically linked theft sensing system

1989-10-10

1990-11-27

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340687, G08B 1314

Patent

active

049739450

ABSTRACT:
A theft sensing system which provides an output signal and actuation of an alarm upon cut off of its electrical power source. The system includes an oscillator which provides an output signal. The amplitude of the oscillator signal is modulated responsive to disconnection of an appliance from its power source. A signal level detector provides an output signal when the modulation amplitude varies beyond a predetermined level. The output signal from the level detector indicates disconnection of the appliance from a AC power source and is used to provide an alarm and permanently disable the appliance.

REFERENCES:
patent: 3423747 (1969-01-01), Hogencamp
patent: 3425050 (1969-01-01), Tellerman et al.
patent: 3633199 (1972-01-01), Curry et al.
patent: 4121201 (1978-10-01), Weathers
patent: 4284983 (1981-08-01), Lent
patent: 4327360 (1982-04-01), Brown
patent: 4409590 (1983-10-01), Baker
patent: 4658242 (1987-04-01), Zeder
patent: 4680574 (1987-07-01), Ruffner
patent: 4736195 (1988-04-01), McMurtry et al.

Affiliated with

Also associated with

Rating

Magnetically linked theft sensing system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetically linked theft sensing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetically linked theft sensing system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1034405