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Lightweight non-welded gas generator with rolled spun lip

  • US 4,907,819 A
  • Filed: 09/16/1988
  • Issued: 03/13/1990
  • Est. Priority Date: 09/16/1988
  • Status: Expired due to Term
First Claim
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1. A lightweight, non-welded inflator apparatus which comprises:

  • (a) a domed diffuser member, having a first open end and a second closed end;

    (b) a closure plate member sealing the open end of said diffuser member, thereby forming an inflator housing;

    (c) a sufficient amount of a combustible gas generant material within an interior portion of said housing to produce, upon ignition thereof, a volume of a gaseous product sufficient to substantially inflate an automobile air bag within about 30-60 milliseconds;

    (d) means for initiating combustion of said gas generant material, said initiating means positioned within said housing adjacent said gas generant;

    (e) means within said housing for filtering said gaseous combustion product prior to its discharge from the inflator housing, said filtering means circumferentially surrounding said gas generant material adjacent an inner wall portion of said housing, and adapted for cooling said gas and removing substantially all particulate matter therefrom,said closure plate member and said domed diffuser member being sealed together without welding either of said members to form an inflator housing capable of withstanding elevated pressures produced by combustion of said gas generant material, and(f) means outside said housing for locking a peripheral circumferential skirt portion of said diffuser member at said open end against a bottom surface of said closure plate member to reinforce said non-welded seal between said closure plate member and said diffuser member.

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