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Weather protected portable security system for in-field use

  • US 5,200,735 A
  • Filed: 03/20/1991
  • Issued: 04/06/1993
  • Est. Priority Date: 07/11/1989
  • Status: Expired due to Fees
First Claim
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1. A weather-protected portable security system comprising:

  • an alarm condition sensor including at least one of an intruder detector (including at least one of a microwave emitter/detector and an infrared sensor) for sensing the presence of a moving object, thing or being;

    a motion/vibration sensor;

    a contact sensor to sense a gap opened between two objects and a fire/smoke sensor; and

    a loop sensor having a weatherproof housing and a pair of electrified wire loops adapted to be connected between a fixed object and an item to be protected and to generate an alarm condition signal if either loop is cut, broken or pulled from said housing;

    said alarm condition sensor also including a first radio transmitter in a first weather-protected housing, said transmitter for sending a signal representative of an alarm condition to a remote receiver;

    a second weather-protected housing containing;

    a radio receiver for receiving the signal from said first transmitter;

    a controller for responding to the received signal;

    a second ratio transmitter activated by said signal from said controller for sending a signal to a remote alarm device; and

    a remote alarm device in a third weather-protected housing including a radio receiver for receiving said activating signal from said second transmitter and for sounding an audible alarm is response to said signal, said remote alarm device being located at the same site as said alarm condition sensor.

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