×

Alarm system for preventing loss of personal property

  • US 5,781,109 A
  • Filed: 09/05/1996
  • Issued: 07/14/1998
  • Est. Priority Date: 09/05/1996
  • Status: Expired due to Fees
First Claim
Patent Images

1. An alarm system for preventing loss of personal property, comprising:

  • a pair of radio signal transmission/alarm units that each includes 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;

    wherein the signal of each sending component is tuned to the receiving/alarm component tuner of the other transmission/alarm unit, and each receiving/alarm component is tuned to the signal of the sending component of the other transmission/alarm unit.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×