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Inflatable impact protection cushion

  • US 4,186,941 A
  • Filed: 05/03/1978
  • Issued: 02/05/1980
  • Est. Priority Date: 05/18/1977
  • Status: Expired due to Term
First Claim
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1. An inflatable impact protection cushion for a passenger of a motor vehicle, said cushion comprising a bag expandable to a maximum volume and separating means separating a portion of the bag from the remainder thereof for limiting the degree of expansion of said bag to a volume less than said maximum volume when an internally supplied gas exerts an expansion pressure below a predetermined value, said separating means being constructed for being rendered inoperative when said gas exerts an expansion pressure greater than said predetermined value to enable said bag to be expanded to said maximum volume, and inflation means for initially supplying said gas in a manner exerting said pressure less than said predetermined value to initially expand said bag to said lesser volume and for subsequently supplying an additional amount of gas in a manner exerting a pressure greater than said predetermined value to expand said bag to said maximum volume.

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