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Compact self-contained fire extinguisher

  • US 4,711,307 A
  • Filed: 02/05/1987
  • Issued: 12/08/1987
  • Est. Priority Date: 05/20/1985
  • Status: Expired due to Fees
First Claim
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1. In combination with electrical equipment including a housing of limited space having a knock-out aperture and an interior surface surrounding the knock-out aperture, a compact, self-contained fire extinguisher for installment in the electrical equipment by mounting within the knock-out aperture characterized by the extinguisher comprising an elongated cylindrical vessel having a relatively high aspect ratio and having a diameter which at any point along the length of the vessel is less than the diameter of the knock-out aperature whereby the vessel is configured for extending through the knock-out aperture, the vessel containing a quantity of fire extinguishing substance under pressure, a nozzle at one end of the extinguishing substance under pressure, a nozzle at one end of the elongated vessel, thermally activatable means carried by the nozzle for permitting discharge of the fire extinguishing substance through the nozzle when thermally activated, the vessel being inserted in the knock-out aperture by extension of its nozzle-remote end through the knock-out aperture by extension of its nozzle-remote end through the knock-out aperture, and adhesive securement means including flange-defining structure at a nozzle end of the vessel for providing a securement flange presenting a securement surface of annular configuration and adhesively affixed to the securement surface for adhesively removably mounting the vessel by adhesion to the interior surface of the electrical housing surrounding the knock-out aperture with the nozzle-remote end is extending exteriorly of the electrical housing and with only the nozzle, thermally activatable means and adhesive securement means extending interiorly of the electrical housing for causing discharge of the fire extinguishing substance within the electrical housing, whereby the fire extinguishing apparatus is installable and removable solely from interiorly of the electrical housing.

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