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Fire extinguisher for closed spaces

  • US 5,984,016 A
  • Filed: 01/22/1998
  • Issued: 11/16/1999
  • Est. Priority Date: 05/18/1995
  • Status: Expired due to Term
First Claim
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1. A fire extinguisher for closed spaces, said fire extinguisher comprising a pressure container having first and second fluid storage chambers therein, said first and second fluid storage chambers separated from each other and partially defined by a displaceable wall, an extinguishant liquid stored in said first chamber, said first chamber provided with a release valve, a pressurized driving gas stored in said second chamber, the extinguishant liquid stored in said first chamber discharged through said release valve by displacement of said displaceable wall into the first chamber at a high pressure in response to a driving force exerted on said displaceable wall by said pressurized driving gas stored in said second chamber upon actuation of said release valve, the fire extinguisher further comprising at least one nozzle connected with the release valve, the extinguishant liquid supplied to the nozzle from the release valve at a high pressure atomized by said nozzle, a liquid fog created by said atomized extinguishant liquid filling the closed space, wherein the displaceable wall is constituted by a piston displaceably positioned in the pressure container between the first chamber containing the extinguishant liquid and the second chamber containing the pressurized driving gas, the piston being adapted to discharge the whole amount of extinguishant liquid from the fire extinguisher.

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