The present invention is directed to a portable fan for the use in firefighting and other ventilation use-cases. The portable fan provides firefighters the ability to provide positive pressure ventilation in use for fighting fires which does not require power cables or combustible fuel powered motors, and provides increased portability, reduced risk, and reduced deployment time associated with managing and fighting a fire.

A device for fighting a fire by spreading material such as dirt onto the fire comprising including a rotating drum to collect material into a chamber and a rotating blade to move the material through the chamber and out through a directable chute. A fan assists the material through the chute. The rotating drum includes either mulching blades, hoeing blades or scoops to gather the material. The device is used in conjunction with a motive device such as a tractor or a remotely controlled drive unit.

The invention includes an air mover device used for fire mitigation and protection. The core component is an air mover unit whose discharge airstream can be positioned using air rudders to provide air flows in optimum directions and capacity to counter unwanted fire progression or to promote fires in cases of back-burns. Additional support components include a power supply, its fuel source, a speed control mechanism for the air mover, an air mover inlet protective screen, a sparger unit to impart suppressant or retardant into the airstream, and instrumentation and controls to ensure function and safety of equipment and personnel. This device can be on a static or mobile platform, towed or self-propelled and can be locally or remotely controlled.

An aerial jet engine fire extinguishing methodology includes: identifying an undesired fire; providing an airplane with at least one jet engine with an exhaust that may be directed toward the fire; flying the airplane in the proximity of the fire with the exhaust directed toward the fire, the flying being at an altitude sufficient to deliver carbon dioxide and other exhaust gases from the exhaust to the fire to at least partially deprive the fire of oxygen and to thereby snuff out at least a portion of the fire. The airplane may be manned or an unmanned drone.

There is described a fire-fighting apparatus comprising a housing comprising an upstream air inlet and a downstream fire-extinguishing stream outlet and a hollow body therebetween, wherein the housing houses an air stream traveling at high velocity; and a spray assembly concentrically mounted to the housing. The spray assembly comprises a fluid inlet connected to a source of fluid outside the housing; and a plurality of injecting assemblies fluidly connected to the fluid inlet and designed for breaking down an inflow of the fluid into droplets and projecting the droplets of the fluid within the air stream in a multiphase fire-extinguishing stream. The injecting assemblies each comprises a fluid outlet; a base plate through which extends the fluid outlet; a holding structure mounted to the base plate and extending downstream therefrom, and a unibody jet-fragmenting device mounted to the holding structure facing the stream of fluid exiting the fluid outlet.

A fire ventilation system. The fire ventilation system includes a frame having an open central area. The frame can removably secure within an opening of a building, such as a door or window. A flange extends away from the frame along an inner perimeter thereof. A tube having an inlet thereon, extends along an outer perimeter of the frame. A gap is disposed through the tube, wherein the gap can expel fluid received through the inlet therethrough, such that the gap expels the fluid towards the flange.

A device for ventilating a burning building that includes, a chassis; and a cutting assembly, mounted on the chassis. The cutting assembly is adapted to cut a ventilation hole in a roof or wall member of a building either autonomously or under remote control by an operator to allow smoke and/or hot gases to escape from the roof space.

A fluid-jet emitting machine, particularly a firefighting machine, comprises a fluid-jet emitting device, a transport vehicle, lifting members and a control device.

Each lifting member comprises an actuator constrained to the transport vehicle and at least one idler wheel adapted to engage a rail of a track.

The actuators are configured to move the respective wheels between a non-operative position, in which the wheels are distanced from the respective rail, and an operative position, in which the wheels are arranged in contact with the respective rail.

The control device is operatively associated with the actuators to activate the passage of the wheels from the non-operative position to the operative position so that during movement along a track and in said operative position, the wheels prove to be pressed against the respective rail, exerting a force such as to reduce only part of the pressure exerted by the movement means of the vehicle on the track.

A control system for use during a tunnel fire includes: measurement means 100.sub.1 to 100.sub.n installed in each of a plurality of management sections assigned in a tunnel, and for measuring one or both of a gas concentration and a smoke concentration in the management section using a light signal; and control means 102 for identifying a management section which includes a fire point, and controlling blowing means 101 capable of changing an air volume, based on one or both of the gas concentration and the smoke concentration measured by one or more measurement means installed in one or more management sections located downstream of the identified management section.

A fire suppression system encompassing a plurality of tubes, buried approximately vertically in the ground, each tube having at least one upper end in open contact with the atmosphere, and a lower end in contact with an underground chamber containing an electron-donating substance, wherein the upper end of the tubes has functionally associated therewith a suction system which sucks air from the local atmosphere into the tubes, and wherein the electron-donating substance reacts with atmospheric oxygen in the air to reduce it and convert it to a form that does not support combustion.