Back to results
US 5,275,243 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/liquid-foam, wherein the velocity of the powder stream can be adjusted.
Claims10
A liquid and powder method for the extinction of fires, comprising
- discharging from a mechanism to a fire simultaneously a stream of powder surrounded by a stream of liquid;
- and
- adjusting the velocity of the stream of powder to coordinate with the distance of the discharging mechanism from the fire so that the powder stream terminates at the fire while contained within the liquid stream.
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 powder conduit attached to the barrel, having an inlet for receiving powder and an outlet area through which the powder is discharged;
- means for locating the outlet area of the conduit within the outlet area of the barrel for discharging the powder in a path substantially surrounded by the path of the discharged liquid stream;
- and
- a sparger that is removably attached to the outlet area of the powder conduit.
2 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 powder conduit attached to the barrel, having an inlet for receiving powder and an outlet area through which the powder is discharged;
- a sparger attached to the outlet area of the conduit, having a sparger outlet area;
- means for locating the outlet area of the sparger within the outlet area of the barrel such that the powder is discharged in a path substantially surrounded by the path of the discharged liquid stream.
1 more element
Dependencies are inferred from the claim text.