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US 7,082,999 B2Granted
Pressurization system for fire extinguishers
AssigneeAerojet-General Corporation
InventorNicholas R. Arnot
Life of this patent
Estimating the term…
Abstract
A fire extinguisher includes a gas generator for pressurizing a suppressant. The generator includes an ignition cord within a flexible tube extending within an interior of an extinguisher bottle. Advantageously, there is additional generant between the tube and the ignition cord. The extinguisher may be manufactured as a retrofit of an existing hand-held supercharged extinguisher.
Claims21
A method for remanufacturing a discharged vaporizing-liquid fire extinguisher comprising:
- removing a first discharge assembly from an extinguisher bottle;
- removing a dip tube from the bottle;
- cleaning the bottle;
- filling the bottle with a liquid suppressant;
- inserting a gas generator into the bottle;
- and
- either reinstalling the first discharge assembly or installing a second discharge assembly.
4 more elements
A method of manufacturing a fire extinguisher fire extinguisher comprising:
- providing a bottle having an interior and at least an outlet;
- introducing a fire suppressant into the bottle when the extinguisher is in a pre-discharge condition;
- and
- securing and extending though a gas generant and discharge assembly to the bottle outlet;
- wherein the gas generant and discharge assembly comprises:
- a source of gas for pressurizing the suppressant at least when the bottle is in a discharging condition comprising:
- an ignition cord having a sheath and a pyrotechnic charge contained within the sheath and extending from a proximal end to a distal end;
- a flexible tube surrounding the sheath at least along a major portion of a length thereof and extending from a proximal end to a distal end;
- a gas generant charge contained between the tube and sheath;
- and
- means for igniting the ignition cord;
- and
- an outlet, through which the suppressant is discharged when the extinguisher is in the discharging condition.
10 more elements
Dependencies are inferred from the claim text.