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Fluid fueled air bag inflator

  • US 5,470,104 A
  • Filed: 05/31/1994
  • Issued: 11/28/1995
  • Est. Priority Date: 05/31/1994
  • Status: Expired due to Term
First Claim
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1. An apparatus for inflating an inflatable device, said apparatus comprising:

  • a pressurized first chamber wherein at least one fuel in the form of a fluid and at least one oxidant are burned to produce combustion products including hot combustion gas, said first chamber including at least one gas exit opening and having sealing means normally closing said gas exit opening, the combustion of said fluid fuel and said oxidant increasing the temperature and pressure within said first chamber, said first chamber sealing means adapted to open when a predetermined increase in pressure within said first chamber is realized,whereby at least a portion of said hot combustion gas is expelled from said first chamber,a second chamber containing a supply of pressurized stored gas, said second chamber in fluid communication with said first chamber upon the opening of said gas exit opening sealing means, said hot combustion gas expelled from said first chamber mixing with said pressurized stored gas to produce inflation gas, said second chamber including at least one gas exit port and having sealing means normally closing said gas exit port, the mixing of said hot combustion gas with said pressurized stored gas increasing the temperature and pressure within said second chamber, said second chamber sealing means adapted to open when a predetermined increase in pressure within said second chamber is realized after said hot combustion gas expelled from said first chamber mixes with said pressurized stored gas to produce said inflation gas,whereby at least a portion of said inflation gas is expelled from said second chamber to inflate said device, andinitiator means for initiating the burning of said at least one fluid fuel and said at least one oxidant.

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