US 6,668,939 B2 · Piercing nozzle

Abstract

The invention is a piece of firefighting equipment called a piercing nozzle. The piercing nozzle comprises a hollow tube connected to a hose and adapted for conveying water or other fire suppressant fluid near a pointed head adapted to penetrate a barrier and to release the water or fire suppressant fluid in an adjoining room. The pointed head contains a plurality of holes angled in various directions so as to spray the fire suppressant fluid over a wide area in the adjoining room so as to protect firefighters from flames or superheated air when they enter the adjoining room. The pointed head may be shaped like a cone attached to which is a plurality of sharp blades designed to facilitate penetration of the barrier. Attached to the hollow tube is a sliding weight with handles used for pounding the pointed head through the barrier.

Claims20

Dependent claims

A piercing nozzle used by an operator for penetrating a door, wall or similar barrier and injecting fluid beyond the barrier, comprising;

a. an elongated tube having a longitudinal axis with a source of pressurized fluid at one end,
b. a pointed head having a hollow central cavity and attached to an opposite end of said tube,
c. a sliding weight containing a hole through which said tube passes, and adapted to slide back and forth along the tube,
d. at least one weight stop positioned on the tube between said sliding weight and the end of said tube nearest to the pointed head,
e. a handle on said sliding weight, whereby the operator can move said sliding weight away from said weight stop, and then toward said weight stop, whereby the momentum and impact of said sliding weight against the weight stop gives a force to the pointed head and tube to penetrate a door, wall, or barrier;
and
f. a means for spraying a fluid in proximity to the pointed head.

4 more elements

Dependencies are inferred from the claim text.

Piercing nozzle

Life of this patent

Piercing nozzle

Life of this patent

Abstract

Claims20