Personal locator transmitter

Details Personal locator transmitter Personal locator transmitter

1989-10-16

1991-05-07

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340539, 340573, G08B 1314

Patent

active

050140400

ABSTRACT:
A personal locator transmitter adapted to be worn on the wrist and having the size and appearance of a conventional wrist-watch. This transmitter is provided with a programmable memory, a transmitter controlled by the memory, an antenna for reliably radiating signals from the transmitter regardless of orientation of the wrist of a user and including both a manually operable alarm activated by pressing a button, and an automatic alarm actuated by an attempt to remove the unit from the wrist of the wearer. The unit is controlled by a control memory comprised of an EEPROM encoded with unique identification codes and other information as required in the specific application.

REFERENCES:
patent: 3972320 (1976-08-01), Kalman
patent: 4063410 (1977-12-01), Welling
patent: 4694284 (1987-09-01), Leveille et al.
patent: 4736196 (1988-04-01), McMahon et al.
patent: 4812823 (1989-03-01), Dickerson
patent: 4819860 (1989-04-01), Hargrove

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