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Gas supply device for an air-bag

  • US 5,582,425 A
  • Filed: 10/18/1995
  • Issued: 12/10/1996
  • Est. Priority Date: 02/08/1993
  • Status: Expired due to Fees
First Claim
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1. A gas supply device for supplying gas to an airbag, the gas supply device comprising a bottle containing compressed gas and a valve mechanism operable to permit the compressed gas to flow from the bottle to inflate the airbag, the valve mechanism comprising a valve member which is movable in response to a change in pressure in a specific region within the bottle to increase, in a controlled manner, the flow passage area for gas flowing from the bottle, retaining means being provided to retain the valve member in a first position until the change in pressure reaches a predetermined limit, the retaining means then releasing the valve member to permit the valve member to move wherein the bottle containing compressed gas defines at least two regions separated by a partition wall, the partition wall being movable in response to a fall in pressure in one of the two regions, the valve member moving in response to movement of the partition wall.

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