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Piston driven cold gas air bag inflator

  • US 5,301,979 A
  • Filed: 07/23/1993
  • Issued: 04/12/1994
  • Est. Priority Date: 07/23/1993
  • Status: Expired due to Fees
First Claim
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1. An inflator for delivering pure inert cold gas to an air bag comprising,a container in which a pressurized cold pure inert gas is stored, said container having a first end and a second end, said container including a cylindrical section positioned between said first end and said second end and having an outlet conduit positioned at said second end, said outlet conduit being sealed by a burst disk that ruptures upon a predetermined increase of pressure in said container,a piston in sealed, slidable relation over substantially the full length of said cylindrical section of said container, said piston during storage of said cold pure inert gas in said container being positioned at the end of said cylindrical section that is adjacent to the first end of said container,pyrotechnic means positioned between said piston and the first end of said container with both sides of said piston being at the same pressure during storage of said pure inert gas in said container, andmeans for activating said pyrotechnic means.

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