Alarm system for preventing loss of personal property

Details Alarm system for preventing loss of personal property Alarm system for preventing loss of personal property

1996-09-05

1998-07-14

Swann, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

340539, 340571, 340693, G08B 1314

Patent

active

057811091

ABSTRACT:
An alarm system for preventing loss of personal property, comprises a pair of radio signal transmission/alarm units that each include a sending component having a signal oscillator, and a receiving/alarm component comprising a tuner for selecting a signal from the sending component and receiving the signal as an electrical current, an amplifier for amplifying the signal current, an alarm, and a switcher that switches off the alarm when the amplified signal current is above a prescribed level and switches on the alarm when the amplified signal current does not exceed a prescribed level. The signal transmitted by one sending component is tuned to the receiving/alarm component tuner frequency of the other transmission/alarm unit, and each receiving/alarm component is tuned to the signal frequency of the sending component in the other transmission/alarm unit.

REFERENCES:
patent: 5396218 (1995-03-01), Olah
patent: 5461365 (1995-10-01), Schlager et al.

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