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Igniter for vehicle airbag inflator

  • US 6,164,208 A
  • Filed: 07/14/1998
  • Issued: 12/26/2000
  • Est. Priority Date: 07/14/1998
  • Status: Expired due to Term
First Claim
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1. An igniter used in a vehicle air bag system, comprising:

  • a stainless steel casing defining a receiving chamber;

    an ignition unit mounted in said receiving chamber within said stainless steel casing, said ignition unit comprising a pair of electrodes, a nickel chrome wire connected between said electrodes at one end, and an electrically insulative packing block fastened to said electrodes to fix said electrodes in place and to insulate said electrodes from each other;

    a pyrotechnic powder holder covered on said ignition unit and holding a high burning rate pyrotechnic powder;

    a stainless steel shell mounted around the periphery of said pyrotechnic powder holder; and

    wherein said electrodes each are comprised of an upper metal rod and a bottom metal rod longitudinally connected together, said upper metal rod comprising a top end, a bottom end welded to said bottom metal rod, a first rod body connected between said top end and said bottom end, and a second rod body obliquely connected between said first rod body and said bottom end, said bottom metal rod having an expanded head at a top end thereof welded to the bottom end of said top metal rod.

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