Portable anti-theft device

Details Portable anti-theft device Portable anti-theft device

1993-01-05

1993-06-29

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular coupling link

340531, 340571, 340572, 340573, 455 9, 455229, G08B 108, G08B 2508

Patent

active

052238156

ABSTRACT:
A portable anti-theft system and method for sounding an alarm which is a speech synthesizer when a first portable unit and a second portable unit become separated by a predetermined distance is disclosed herein. The system comprises transmitter means in the first portable unit for transmitting a signal, receiver means in said second portable unit for receiving the signal transmitted by the transmitter means, signal strength determination means in communication with the receiver means for comparing the strength of the received signal with a predetermined signal comprising speech synthesizing means for making an announcement when the signal strength determination means has determined that the strength of the received signal is less that the predetermined signal strength value.

REFERENCES:
patent: 4593273 (1986-06-01), Narcisse
patent: 4598272 (1986-07-01), Cox
patent: 4785291 (1988-11-01), Hawthorne
patent: 4871997 (1989-10-01), Adriaenssens et al.
patent: 4897630 (1990-01-01), Nykerk

Affiliated with

Also associated with

Rating

Portable anti-theft device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Portable anti-theft device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable anti-theft device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1758525