Airbag apparatus for automobile
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United States of America Patent
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-
Jan 23, 2007
Issued Date -
N/A
app pub date -
Jan 27, 2005
filing date -
Feb 19, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
An airbag apparatus utilizes an interior panel of a vehicle. The interior panel has a rectangular fracture-opening section defined by at least one hinge groove and one fracture groove formed on an inside surface of the interior panel through irradiation with laser pulses. The fracture groove includes bridge portions and continuous hole portions provided alternately. Each of the bridge portions includes no laser-formed hole and has a thickness equal to the interior panel. Each of the continuous hole portions is composed of first holes for fracture which have a first depth and are successively formed between adjacent bridge portions through irradiation with laser pulses, and second holes which have a second depth smaller than the first depth and are each formed between adjacent first holes, through irradiation with laser pulses, so as to remove an original-thickness portion between the adjacent first holes.
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Family
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