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Dual stage actuation system

  • US 5,984,351 A
  • Filed: 04/11/1997
  • Issued: 11/16/1999
  • Est. Priority Date: 04/11/1997
  • Status: Expired due to Fees
First Claim
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1. An inflator for use in an inflatable restraint system comprisinga pressure vessel having first and second chambers containing pressurized fluid that are separated by a common partition for containing the fluid within each of said chambers;

  • each chamber having a substantial source of inflationary fluid for venting by the inflator;

    discharge means communicating with the first chamber for the release of the fluid therein in response to a stimulus external of the vessel; and

    movable control means associated with said partition for regulating the passage of the fluid from the second chamber to the first chamber, said control means being activated in response to the pressure difference between said first and second chambers created by the activation of said discharge means for releasing the fluid within the first chamber said moveable control means comprisingchanneling means axially extending from the partition defining a path for passage of fluid between said chambers; and

    valve means slidingly engaged with the channeling means operably responsive to the pressure differential in said path for regulating the flow of fluid there through.

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