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Airbag module diffuser

  • US 5,752,715 A
  • Filed: 02/14/1997
  • Issued: 05/19/1998
  • Est. Priority Date: 02/14/1997
  • Status: Expired due to Fees
First Claim
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1. A diffuser for substantially uniformly diffusing inflation gases into a mouth of an inflatable airbag cushion from an elongated inflator having inflation exhaust ports at only one end thereof, the diffuser comprising:

  • opposing first and second diffuser ends;

    a first end section extending from the first diffuser end, positionable over the inflation exhaust ports of the elongated inflator and defining at least one diffuser vent opening;

    an intermediate section extending from the first end section and defining a plurality of diffuser vent openings, each of the plurality of diffuser vent openings being equal or larger than a preceding diffuser vent opening closer to the first end section, with a diffuser vent opening of the plurality of diffuser vent openings of the intermediate section closest to the first end section being equal or larger than the at least one diffuser vent opening of the first end section;

    a second end section extending from the intermediate section to the second diffuser end and defining a single diffuser vent opening equal to or larger than a diffuser vent opening of the plurality of diffuser vent openings of the intermediate section closest to the second end section;

    the at least one diffuser vent opening of the first end section, the plurality of diffuser vent openings of the intermediate section, and the single diffuser vent opening of the second end section forming a total diffuser vent area of the diffuser;

    the at least one diffuser vent opening of the first end section having a diffuser vent area equal to between about eight and about seventeen percent of the total diffuser vent area;

    the plurality of diffuser vent openings of the intermediate section combined having a diffuser vent area equal to between about fifty-six and about seventy-nine percent of the total diffuser vent area; and

    the single diffuser vent opening of the second end section having a diffuser vent area equal to between about thirteen and about twenty-seven percent of the total diffuser vent area.

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