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Fluid supply for occupant restraint system

  • US 3,966,226 A
  • Filed: 01/25/1974
  • Issued: 06/29/1976
  • Est. Priority Date: 04/17/1972
  • Status: Expired due to Term
First Claim
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1. A fluid supply for an occupant restraint system having a confinement with a collapsed inoperative condition and an expanded operative condition for restraining movement of an occupant of a vehicle during a collision of the vehicle and means for directing gas into the confinement to effect expansion thereof, the fluid supply comprising:

  • a vessel defining an elongated storage chamber adapted to hold pressurized fluid and an exit passage at one end of the vessel adapted for communication with the directing means and being generally concentric with the primary axis of the elongated storage chamber;

    a tubular assembly passing through said exit passage and disposed concentrically within said elongated storage chamber substantially on said axis and defining a generating chamber concentric with said axis;

    gas generating material located in the generating chamber and adapted to generate gas upon actuation;

    means for providing fluid communication between the storage chamber, the gas generating chamber, and the exit passage, said means for providing fluid communication between the storage chamber and the gas generating chamber including means for providing continuous fluid communication therebetween;

    a shear disk located within and sealing the exit passage;

    a shear member having a cutting edge facing the shear disk for cutting an opening in the shear disk; and

    means for moving the shear member through the shear disk in response to the generation of gas to cut the opening in the shear disk to allow fluid to be released from the vessel.

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