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Vented ignition cup in stored fluid inflator

  • US 5,582,426 A
  • Filed: 10/24/1995
  • Issued: 12/10/1996
  • Est. Priority Date: 10/24/1995
  • Status: Expired due to Fees
First Claim
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1. An apparatus for inflating an inflatable vehicle occupant protection device, said apparatus comprising:

  • a container defining a chamber for storing inflation fluid under pressure, said container having an opening through which inflation fluid flows to inflate the protection device;

    a rupturable closure extending across the opening in said container to block the flow of inflation fluid through the opening; and

    a flow initiator located in the chamber, said flow initiator comprising;

    an ignition cup having a base section fixed to said container and a movable section attached to said base section, said movable section being separable from said base section, said movable section having a vent which permits communication of the inflation fluid in the chamber with the interior of said ignition cup;

    an ignitable propellant located in said ignition cup; and

    an actuatable igniter to ignite, upon actuation, said propellant to produce combustion products including pressure which acts on interior surfaces of said movable section to separate said movable section from said base section and propel said movable section to engage and rupture said closure.

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