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Gas generator for inflating an inflatable article

  • US 5,003,887 A
  • Filed: 12/13/1989
  • Issued: 04/02/1991
  • Est. Priority Date: 12/15/1988
  • Status: Expired due to Fees
First Claim
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1. A gas generator for inflating an inflatable article, comprising a housing, a reaction chamber in said housing for generating gas, a filter chamber arranged for receiving gas from said reaction chamber, first gas exit opening means (10 to 15) in said reaction chamber for a gas flow from said reaction chamber into said filter chamber, second gas exit opening means (22) in said filter chamber for a gas flow from said filter chamber into said inflatable article, temperature responsive flow control means arranged in said gas generator for influencing a gas flow from said reaction chamber into said inflatable article in such a way that an inflation duration and an inflation pressure are substantially independent of a gas generator temperature, and wherein said reaction chamber (4) has a circular cross-section, wherein said filter chamber has a ring configuration surrounding said reaction chamber, said temperature responsive flow control means comprising a baffle ring (16) extending around said reaction chamber with a radial spacing for guiding a flow of generated gas, a ring slide (28) rotatably surrounding said reaction chamber in said radial spacing, said a temperature responsive drive member (40) connected to said ring slide for driving said ring slide (28) between closing and opening positions in response to temperature changes, said baffle ring (28) having flow ports (24, 25, 26) therein, said ring slide (28) having flow port closing wall sections (32 to 34) for cooperation with said flow ports (24, 25, 26) of said baffle ring (16), said temperature responsive drive member (40) driving said ring slide (28) to close said flow ports (24, 25, 26) in said baffle ring in response to a higher gas generator temperature and to open said flow ports (24, 25, 26) in said baffle ring in response to a lower gas generator temperature.

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