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US 5,167,285 AGranted
Dry powder and liquid method and apparatus for extinguishing fire
AssigneeCCA Inc.
InventorsLeslie P. Williams, Dwight Williams
Life of this patent
Estimating the term…
Abstract
A method and apparatus for extinguishing fires by simultaneously applying a spray of dry powder and liquid/liquid-foam, including a nozzle for the simultaneous spray of powder and liquid.
Claims15
A liquid and powder method for the extinction of three dimensional fires, comprising
- applying to the fire simultaneously a stream of powder surrounded by a stream of liquid.
A liquid and powder nozzle for fire extinction, comprising
- a barrel having an axial bore with an inlet portion for receiving a liquid stream under pressure and an outlet area through which a liquid stream is discharged;
- a conduit attached to the barrel, having an inlet for receiving powder and an outlet area;
- means for supplying liquid to the axial inlet portion;
- means for supplying powder to the powder conduit inlet;
- and
- barrel-outlet/conduit-outlet relative location means for discharging a powder from the conduit in a path substantially surrounded by a path of a liquid stream discharged from the barrel.
3 more elements
A liquid and powder nozzle for fire extinction, comprising
- a barrel having an axial bore with an inlet portion for receiving a liquid stream under pressure and an outlet area through which a liquid stream is discharged;
- a conduit attached to the barrel, having an inlet for receiving powder and an outlet area;
- barrel-outlet/conduit-outlet relative location means for discharging a powder from the conduit in a path substantially surrounded by a path of a liquid stream discharged from the barrel;
- eductor means attached within the axial bore for educting a foam composite into the nozzle, the eductor means having a first inlet to receive a portion of the liquid stream to create reduced pressure in the eductor and a second inlet to receive the foam forming composite;
- and
- a mixing chamber communicating with the eductor means and located in and discharging into the barrel outlet area.
3 more elements
Dependencies are inferred from the claim text.