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Gas generator for air bag

  • US 20040207188A1
  • Filed: 12/08/2003
  • Published: 10/21/2004
  • Est. Priority Date: 12/09/2002
  • Status: Active Grant
First Claim
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1. A gas generator for an air bag comprising a housing having a gas discharge port, an ignition means chamber accommodating therein ignition means which is activated by the impact, and a combustion chamber accommodating therein a gas generating agent which is ignited and burnt to generate a combustion gas, a cylindrical filter disposed between the combustion chamber and the gas discharge port, in which the combustion gas passes through the filter and is discharged from the gas discharge port, wherein an inner cylindrical shielding plate is disposed inside the cylindrical filter, the inner cylindrical shielding plate is disposed such that its lower end opening peripheral edge comes into contact with a housing bottom surface and a space is formed between an upper end opening peripheral edge of the inner cylindrical shielding plate and a housing ceiling surface, a portion having excellent air permeability is provided between an inner peripheral surface of the cylindrical filter and the inner cylindrical shielding plate.

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