Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Reexamination Certificate
2006-03-20
2008-08-05
Black, Thomas G. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
C280S735000
Reexamination Certificate
active
07409277
ABSTRACT:
A driving circuit for a crew protection device to be mounted in a vehicle includes a squib for operating the protection device when a preset amount of electric current is supplied thereto from the DC power source, a pair of first and second transistors connected between the squib and the DC power source, and a transistor control circuit. The transistor control circuit controls the first transistor to pass a first preset amount of electric current if output voltage of the DC power source is higher than a first threshold voltage and to pass an amount of electric current so that the voltage across the first transistor can be set to be lower than a second threshold voltage if output voltage of the DC power source becomes higher than the threshold voltage.
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Black Thomas G.
Chen Shelley
Denso Corporation
Harness Dickey & Pierce PLC
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