Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1993-07-20
1995-02-14
Swann, Glen
Communications: electrical
Condition responsive indicating system
Specific condition
340539, 340693, G08B 2100
Patent
active
053899156
ABSTRACT:
A safety pin actuation mechanism is provided having an ornamental flat body with an electronic circuit to emit or receive a wireless signal. The actuating mechanism includes a shaft with a coil formed at one end coupled to a locating rod. The locating rod is secured by two holders fixed on a surface of the body. A hook is mounted on the surface of the body to capture an end of the shaft. The shaft and hook form a circuit path to turn on or off the electronic circuit. One safety pin emits signals and another safety pin may receive signals to initiate a buzzer in the event there is a lack of signal being received due to one of the persons being out of range of the signal being generated.
REFERENCES:
patent: 3508235 (1970-04-01), Baisden
patent: 4245218 (1981-01-01), Berkebile et al.
patent: 4675656 (1987-06-01), Narcisse
patent: 4785291 (1988-11-01), Hawthorne
patent: 4796014 (1989-01-01), Chia
patent: 5119072 (1992-06-01), Hemingway
All Ship Enterprise Co., Ltd.
Klein David I.
Rosenberg Morton J.
Swann Glen
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