Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1989-11-17
1991-07-23
Orsino, Joseph A.
Communications: electrical
Condition responsive indicating system
Specific condition
340687, 307 101, 439490, G08B 2100
Patent
active
050347276
ABSTRACT:
A connector has a male connecting member and a female connecting member. A monitor element comprising a resistor and a switch which are connected in series is provided in the male connecting member. The switch is provided to be opened when the connector is in a completely connected state. A monitoring circuit including the monitor element having a pair of output terminals at ends of the circuit is provided for detecting voltage across the output terminal. A change of the voltage upon the disconnection of the connector is signaled.
REFERENCES:
patent: 3697974 (1972-10-01), Harris et al.
patent: 4127855 (1978-11-01), Toner
patent: 4674814 (1987-06-01), Hoshino et al.
patent: 4915648 (1990-04-01), Takase et al.
patent: 4927382 (1990-05-01), Huber
Farber Martin A.
Fuji Jukogyo Kabushiki Kaisha
Jackson Jill
Orsino Joseph A.
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