Electricity: electrical systems and devices – Igniting systems – For explosive devices
Reexamination Certificate
2011-02-01
2011-02-01
Fureman, Jared J (Department: 2836)
Electricity: electrical systems and devices
Igniting systems
For explosive devices
C307S010100
Reexamination Certificate
active
07881037
ABSTRACT:
An air bag device of the present invention includes squibs and a capacitor, an electric discharge circuit as well as a backup power supply, a voltage stabilizer and ignition circuits. The voltage stabilizer converts the voltage of the backup power supply to the predetermined target voltage, and the converted voltage is supplied for the ignition circuit. The capacitor removes a noise emitted by the ignition circuit. The electric discharge circuit discharges electricity accumulated in the capacitor right after the supply of an ignition current from the ignition circuit has ended. In this manner, a voltage rise of the capacitor occurring after the end of the supply of the ignition current can be resolved immediately, thereby enabling a supply of a stable ignition current for the squibs.
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Extended Search Report dated Nov. 2, 2010 from European Application No. 08007116.0.
Clark Christopher J
Denso Corporation
Fureman Jared J
Harness Dickey & Pierce PLC
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