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Air bag inflator having circumferentially disposed auto ignition material

  • US 5,299,828 A
  • Filed: 12/07/1992
  • Issued: 04/05/1994
  • Est. Priority Date: 01/10/1992
  • Status: Expired due to Term
First Claim
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1. An inflator of an air bag device comprising:

  • a cylindrical vessel having an inner surface and gas releasing openings disposed in said inner surface about the circumference thereof,a gas generating agent disposed in said vessel for inflating an air bag,a boosting agent for starting a gas generating reaction of said gas generating agent, said boosting agent being located in a middle of said gas generating agent,an igniting agent having a pyrolytic temperature lower than that of said boosting agent, said igniting agent being disposed outside the gas generating agent and distributed over almost the entire inner surface of the cylindrical vessel so that the igniting agent reacts first when the vessel is heated, andmeans for igniting said boosting agent actuated only when said air bag is to be inflated for protecting a user.

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