A nozzle assembly includes a nozzle body and a flow straightener. The nozzle body defines an inlet configured to be fluidly coupled to fluid source, an outlet, and a nozzle body passage extending between the inlet and the outlet. The flow straightener is coupled to the nozzle body and extends at least partially across the nozzle body passage. The flow straightener defines a primary passage and a secondary passage extending through the flow straightener to fluidly couple the inlet and the outlet of the nozzle body. The primary passage defines a primary passage outlet having a cross-sectional area, and the secondary passage defines a secondary passage outlet having a cross-sectional area that is less than the cross-sectional area of the at least one primary passage. At least one of the primary passage outlet and the secondary passage outlet has a circular cross-section.

A nozzle for dispensing a fluid having a barrel having a proximal end and a distal end, the barrel having a passage defined by a first internal surface extending between the distal end and the proximal end, and an orifice defined by a second internal surface at the distal end of the barrel, a stem located at least partially in the barrel, the barrel is movable in relation to the stem to switch between a low pressure mode and a high pressure mode, a shaper located around an outer surface of the distal end of the barrel, the shaper being movable in relation to the barrel to switch between a low pressure fog mode and a low pressure stream mode. The nozzle is configured to dispense the fluid in a straight stream or fog in both the low pressure mode and the ultra-high pressure mode. The orifice is also configured to provide flushing capability for the ultra-high pressure mode while operating in the low pressure mode.

A nozzle for dispensing a fluid having a barrel having a proximal end and a distal end, the barrel having a passage defined by a first internal surface extending between the distal end and the proximal end, and an orifice defined by a second internal surface at the distal end of the barrel, a stem located at least partially in the barrel, the barrel is movable in relation to the stem to switch between a low pressure mode and a high pressure mode, a shaper located around an outer surface of the distal end of the barrel, the shaper being movable in relation to the barrel to switch between a low pressure fog mode and a low pressure stream mode. The nozzle is configured to dispense the fluid in a straight stream or fog in both the low pressure mode and the ultra-high pressure mode. The orifice is also configured to provide flushing capability for the ultra-high pressure mode while operating in the low pressure mode.

A nozzle including a nozzle body having a flow path therein, the nozzle further including a face plate coupled to or positioned in the nozzle body and having an engagement surface. The nozzle includes an arm coupled to or positioned in the nozzle body, the arm including an engagement surface engaging the engagement surface of the face plate. At least one of the engagement surface of the face plate or the engagement surface of the arm has at least part of a spherical surface. The face plate and the arm are configured such that relative rotation between the face plate and the nozzle body causes at least part of the arm to move toward or away from a center of the flow path.

A nozzle including a nozzle body having a flow path therein, the nozzle further including a face plate coupled to or positioned in the nozzle body and having an engagement surface. The nozzle includes an arm coupled to or positioned in the nozzle body, the arm including an engagement surface engaging the engagement surface of the face plate. At least one of the engagement surface of the face plate or the engagement surface of the arm has at least part of a spherical surface. The face plate and the arm are configured such that relative rotation between the face plate and the nozzle body causes at least part of the arm to move toward or away from a center of the flow path.

A fire-hose nozzle includes a cylindrical housing having an inlet, an outlet and a water passageway therebetween. Centrally disposed within the passageway is an elongated, rocket-shaped stem having a larger-diameter end near the inlet and a pointed, tapered end near the outlet. Proximal the inlet are circumferentially disposed apertures for injecting ambient air into incoming water to widen the spray pattern through the outlet. Attached to the inlet is a pistol-grip controller for coupling with a conventional fire hose. Therefore, when water is delivered to the housing, the stem disrupts and separates the water stream to decrease hose back pressure, recoil and oscillation.

A fire-hose nozzle includes a cylindrical housing having an inlet, an outlet and a water passageway therebetween. Centrally disposed within the passageway is an elongated, rocket-shaped stem having a larger-diameter end near the inlet and a pointed, tapered end near the outlet. Proximal the inlet are circumferentially disposed apertures for injecting ambient air into incoming water to widen the spray pattern through the outlet. Attached to the inlet is a pistol-grip controller for coupling with a conventional fire hose. Therefore, when water is delivered to the housing, the stem disrupts and separates the water stream to decrease hose back pressure, recoil and oscillation.

A helipad fire suppression system includes a helipad having an outer boundary that defines an impervious deck area for at least one of landing or storing one or more helicopters, with at least a portion of the impervious deck area being designated a fire suppression target area. The system includes a nozzle assembly having a spray-type nozzle for spraying a fire suppression fluid in a radial pattern. The nozzle assembly can include a nozzle enclosure for enclosing the spray-type nozzle and can be configured for installation in a surface made of an impervious material. The nozzle assembly is disposed in an interior portion of the impervious deck area so as to provide the fire suppression fluid to the fire suppression target area.

A helipad fire suppression system includes a helipad having an outer boundary that defines an impervious deck area for at least one of landing or storing one or more helicopters, with at least a portion of the impervious deck area being designated a fire suppression target area. The system includes a nozzle assembly having a spray-type nozzle for spraying a fire suppression fluid in a radial pattern. The nozzle assembly can include a nozzle enclosure for enclosing the spray-type nozzle and can be configured for installation in a surface made of an impervious material. The nozzle assembly is disposed in an interior portion of the impervious deck area so as to provide the fire suppression fluid to the fire suppression target area.

A hydraulically propelled drone is provided for delivering firefighting fluid to an elevated location. The drone comprises a housing having a primary inlet configured to receive the distal end of a fire hose, a primary outlet configured to receive the inlet end of a primary nozzle, a central passageway configured to conduct fluid from the primary inlet to the primary outlet, and at least one secondary outlet communicating with the central passageway. At least one lift nozzle communicates with the secondary outlet and is configured to direct fluid in a generally downward direction so as to produce an upward thrust on the drone housing, and at least one valve is contained within the housing and configured to control the flow of said fluid through the primary nozzle and the at least one lift nozzle nozzle.