Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1999-10-10
2000-07-04
Hofsass, Jeffery A.
Communications: electrical
Condition responsive indicating system
Specific condition
3405456, 3405459, 340550, 340570, G08B 1314
Patent
active
060845112
ABSTRACT:
A notification device for use with a plurality of barriers corresponding to a plurality of openings in a container having an interior space accessible through said openings. Each barrier having a closed position in which it closes a corresponding opening and an open position to provide access to said interior space. The notification device providing a notification signal when one or more of said barriers has been moved from the closed position toward said open position. The notification device comprises: a power supply; a sensor mounted adjacent each barrier and corresponding opening for sensing when that barrier is not in a closed position; and a signal generator having multiple signal generation modes for generating a unique notification signal in each mode in response to each sensor. Each sensor for a corresponding barrier: (1) electrically connects the signal generator to the power supply when that barrier is not in the closed position, and (2) electrically disconnects the signal generator from the power supply when the barrier is in the closed position. As such, when electrically connected to the power supply, the signal generator generates a unique notification signal for each barrier not in a closed position.
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Hofsass Jeffery A.
Nguyen Hung
Park John K.
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