Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1997-06-20
1999-03-16
Elms, Richard T.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
3404571, B60L 100
Patent
active
058834419
ABSTRACT:
A simple discrete component logic circuit with transistors selectively connected through seat and belt switches to the battery. The transistors operate in either an off mode or a current saturation mode. The circuit includes a plurality of identical resistors and transistors for ease of assembly and reduced cost and can operate over a wide range of voltages without need for power regulation or filters. The circuit recognizes the proper logic sequence with the key switch in either the on or off position but an improper sequence warning signal is provided only after the key switch is turned on. The circuit prevents intermittent warnings or interruptions caused by the operator temporarily bouncing from the seat, but the proper sequence of operations must be preformed and the switches must be operational to prevent a warning signal.
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Deere & Company
Elms Richard T.
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