Airbag cover and apparatus for producing an invisible tear seam therein
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United States of America Patent
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-
Jan 16, 1996
Issued Date -
N/A
app pub date -
Dec 2, 1993
filing date -
Sep 28, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A cover for an air bag unit is disclosed having a patterned tear seam therein defined by an integrally bonded, thermoplastic filler strip as the cover material and comprising a material having properties different than that of the cover material, Apparatus for forming the cover includes a thin shell mold having an inner surface that is heated to melt thermoplastic material cast thereon, A powder box adapted to contain thermoplastic material therein for distribution onto the thin shell mold carries a gasket having a shape corresponding to the tear seam shape. The powder box and gasket are adapted to be connected to the thin shell mold for forming a sealed footprint on the inner surface during distribution of the cast material against heated surface portions of the thin shell mold to form a thermoplastic cover with an opening therein that have the tear seam pattern, The opening is later filled with the lesser strength thermoplastic material to form an integrally bonded thermoplastic filler strip.
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