Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1993-12-02
1995-06-06
Peng, John K.
Communications: electrical
Condition responsive indicating system
Specific condition
36137, 36139, 200 6145R, 335206, 362103, 446 26, 446130, G08B 2300, A43B 2300, H01H 3502
Patent
active
054226287
ABSTRACT:
An movable article carries a circuit including a normally OFF reed switch. In the ON state of the switch, the circuit is adapted to emit an audible or a visible signal. A magnet, mounted on the article to move during normal movement moves over a designed locus which include positions which will cause the reed switch to be ON and OFF.
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Mullen Jr. Thomas J.
Peng John K.
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