Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – And means to form or reshape preform
Patent
1993-12-02
1996-01-16
Nguyen, Khanh P.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
And means to form or reshape preform
425117, 425130, 425134, 425425, 425429, 425435, B29C 4104
Patent
active
054842735
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.
REFERENCES:
patent: 4610620 (1986-09-01), Gray
patent: 4865793 (1989-09-01), Suzuki et al.
patent: 5127818 (1992-07-01), Tibbetts et al.
patent: 5316715 (1994-05-01), Gray
Iannazzi Peter
Parker Thomas
Davidson Textron Inc.
Nguyen Khanh P.
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