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US 7,258,285 B1Granted
Adjustable smooth bore nozzle
AssigneeElkhart Brass Manufacturing Company, Inc.
InventorsEric Combs, Todd Lozier
Life of this patent
Estimating the term…
Abstract
An adjustable nozzle comprising a nozzle body with an inlet, an outlet, and a passageway having a smooth bore extending between the inlet and the outlet. The passageway has an inner dimension transverse to the central axis of the nozzle and a compressible wall wherein the inner dimension is adjustable to adjust the flow rate through the nozzle.
Claims14
An adjustable nozzle comprising:
- a nozzle body having a longitudinal central axis, an inlet, and an outlet;
- a passageway having a smooth bore extending between said inlet and said outlet;
- said inlet being adapted for coupling to a fire suppressant supply;
- and
- said passageway having a compressible wall and a flexible membrane interiorly of said compressible wall, said membrane forming a bladder with an inner dimension and an outer dimension transverse to said central axis, said inner dimension being adjustable to adjust the flow rate through the nozzle, said outer dimension being less than an inner diameter of said compressible wall when said bladder is in an unpressurized configuration and said compressible wall is in an uncompressed configuration wherein said bladder forms a chamber between said bladder and said compressible wall.
2 more elements
An adjustable nozzle comprising:
- a nozzle body having a longitudinal central axis, a first body portion, and a compressible second body portion in fluid communication with said first body portion, said first body portion forming an inlet and having a fixed inner diameter, said second body portion forming an outlet;
- a flexible membrane with an inner diameter, said inner diameter being less than an inner diameter of said second body portion when said second body portion is uncompressed and said membrane is in an unpressurized configuration and expanding in response to fluid pressure in said passageway into a pressurized configuration, when in said pressurized configuration said membrane is compressible and can maintain a smooth inner surface when compressed by said compressible second body portion;
- a nozzle couplet mounted to said nozzle body for mounting said nozzle body to a fire suppressant supply;
- and
- a tip mounted to said nozzle body extending along said second body portion, said tip being movably mounted on said nozzle body and being adjustable along said longitudinal axis and contacting a portion of said compressible second body portion with a tapered interface wherein said tip compresses said compressible second body portion at said tapered interface when said tip is retracted onto said nozzle body to thereby reduce said inner diameter of said compressible second body portion and said membrane.
2 more elements
Dependencies are inferred from the claim text.