Abstract: The invention relates to a fire-extinguishing device and a valve block for a fire-extinguishing device. In order to create a fire-extinguishing device which has a short reaction time up to the quenching of sparks, there is provided, in a fire-extinguishing device which has an extinguishant pipe (14) which leads from an extinguishant reservoir to at least one quenching site and there terminates in an extinguishant outlet nozzle (16), an extinguishant container (20) in the region of the extinguishant outlet nozzle (16). From the container extinguishant flows into the extinguishant pipe upon a pressure drop in the extinguishant pipe (14). A valve block proposed according to the invention for a fire-extinguishing device facilitates the fitting of such an extinguishant container.

Abstract: A method for delivering a liquid fire suppression composition to a fire includes storing the fire suppression composition and a pressurized gas in separate containers, detecting the occurrence of a fire to be suppressed, within about 60 seconds of detecting the fire coupling the pressurized gas with the fire suppression composition to superpressurize the composition, and emitting the superpressurized fire suppression composition to the fire. The method is particularly adapted for use in a total flooding system.

Abstract: A method for extinguishing fires in aircraft cargo spaces includes two pressure chambers separated by an annular boss which houses a restricting orifice and a check valve assembly. A lower chamber acts as a high rate discharge fire extinguisher and the upper chamber acts as a metering fire extinguisher. Upon receipt of an activation command from the cockpit, all the agent contained in the high rate discharge chamber is emptied within seconds. At the same time, the pressurized agent contained in the upper chamber pushes the check valve to a closed position and allows the agent in the metering chamber to flow through the orifice of the restrictor at a predetermined rate. With the properly sized orifice, the agent in the upper chamber will be emptied at a rate that lasts for the needed duration of the aircraft fire protection system.

Abstract: Described is a limited-demand water supply system for use in residential homes wherein a supply of water is automatically provided to fire sprinklers by means of air pressure. Multiple tanks or vessels in a connected fluid system are partially filled with water and then pressurized with air pressure provided by an air compressor. There is maintained sufficient air pressure to empty the water in the vessel system through the fire sprinkler heads, when open. Preferably, to efficiently comply with most current fire system regulations, a set of vessels of less than about 200 gallons capacity each is filled about two-thirds with water and then air-pressurized to about 150 pounds per square inch.

Abstract: A fire extinguishing system having a high pressure liquid accumulator unit (1') and a pump unit (2'). The high pressure liquid accumulator unit has at least one liquid bottle (4a', 4b') for extinguishing liquid, the liquid bottle being connected to a gas source (6a', 6b') through a gas supply line (5') and having an inlet aperture for reception of gas from the gas source. The pump unit has a pump (10') and drive (11') for driving the pump. A line (15') for feeding extinguishing liquid extends from the liquid bottle in order to provide spray heads (3) with extinguishing liquid and the pump is connected to the liquid bottle through a supply line (12') in order to provide the liquid bottle with liquid. In order to enable an effective and, as to the time, relatively long delivery of extinguishing liquid at high pressure with an essentially decreased risk of ice formation, the supply line (12') of the pump is connected to the gas supply line (5') of the gas source by a connecting space (13a', 13b').

Abstract: An installation for fighting fire, having a hydraulic accumulator which has at least one pressure container with a space for extinguishing liquid and a space for propellant gas, a rising tube arranged in the pressure container and provided with a side opening and, at the lower part of the pressure container, a feed opening for feeding extinguishing liquid into the rising tube and further to at least one nozzle. In order to obtain an extremely small drop size of the extinguishing liquid at the final stage of the emptying of the pressure container and in order to manage with a very small amount of extinguishing liquid, the rising tube has a throttle in an area below the uppermost side opening.

Abstract: A fire extinguisher for closed spaces comprising a pressure container having at least two chambers separated from each other by means of a displaceable wall, one of the chambers containing an extinguishant liquid and being provided with a release valve and the other chamber containing a pressurized driving gas for discharging the extinguishant liquid from said one chamber through said release valve by displacing the displaceable wall into the first chamber at a high pressure when the release valve is actuated, the fire extinguisher further comprising at least one nozzle connected with the release valve for atomizing the extinguishant liquid supplied to the nozzle from the release valve at a high pressure in order to create a liquid fog filling the closed space, characterized in that the displaceable wall is constituted by a piston displaceably positioned in the pressure container between the chamber containing the extinguishant liquid and the chamber containing the pressurized driving gas, the piston being ad

Abstract: A new fire suppression device for suppressing a fire within a predetermined radius of the fire suppression device. The inventive device includes a housing having upper and lower housing portions. The housing portions are positionable between an opened position and a closed position. A tank that is disposed between the housing portions holds a flame retardant substance such as halon or a dry chemical. The outer perimeter of the tank is substantially exposed to the area outside the housing when the housing portions are in the opened position. A plurality of tubes outwardly extend from the outer perimeter of the tank. The flame retardant substance passes from the interior of the tank through the tubes when the housing portions are in the opened position.

Abstract: The invention relates to a drive source for a fire fighting apparatus comprising spray heads (4), the drive source comprising a hydraulic accumulator (5), which comprises a container (9, 10) with extinguishing liquid and a pressure gas source (14) for driving the extinguishing liquid out of the container via a channel (29) to the spray heads.

Abstract: Apparatus including two containers, two liquids or liquid mixtures pressued within the containers, a blending section for dispersing intimately one liquid into the other, and a nozzle providing sufficient flow resistance so that the moieties remain liquid in the blending section, and vaporization of the vaporizable moiety occurs within and/or beyond the nozzle.

Abstract: The fire extinguisher includes a container filled with a fire extinguishing liquid and having a normally closed main outlet and support structure extending through an opening of the container wall. A compressed gas cartridge located in the container is supported by the support structure. The support structure has an opening formed therethrough which leads to the end of the compressed gas cartridge. A plunger, an explosive charge, and a heat sensitive fuse, the latter of which has a portion is exposed to the exterior of the container, are located in the opening of the support structure. In the presence of high temperature, the fuse causes the explosive charge to explode and force the plunger to rupture the cartridge which release the gas into the liquid in the container by way of a normally closed gas outlet formed through the wall of the support structure. This causes the liquid to be forced out of the container by way of the normally closed main outlet.

Abstract: A method and apparatus for dispensing a liquid, such as a fire suppressing gent, with a gas wherein both the liquid and a combustible propellant for generating the gas are stored in separate sealed compartments at atmospheric pressure. The liquid is stored in a chamber between an annular piston and a central pedestal containing a gas generating canister. A portion of the gas generated drives the piston to expel the liquid into a mixing chamber in the pedestal, and another gas portion is fed into the mixing chamber so as to mix with and propel the liquid through a nozzle. The liquid may be atomized or vaporized depending on its composition. Mixing of the liquid with the gas may be enhanced by tangentially injecting the liquid into the mixing chamber.

Abstract: A fire-fighting installation has a liquid source (1) for providing a source of a fire-fighting liquid, an outlet line (2) for delivering the fire fighting liquid from the liquid source (1). There is at least one spray head (3) on the outlet line (2) for spraying the fire-fighting liquid delivered by the outlet line (2) at a fire and a gas source (4) connected by way of a line (10) to the outlet line (2) for mixing gas with the fire-fighting liquid delivered to the at least one spray head (3) and produces a finely divided mist of the fire-fighting liquid from the at least one spray head (3). The liquid source has a hydraulic accumulator with at least one liquid tank (1) and a compressed-gas container (1a) connected thereto for the delivering of the fire-fighting liquid.

Abstract: A method for fighting a fire sprays a liquid fog in a total action space (1; 21) about the fire by means of at least one spray head and sprays a non-combustible gas within a partial space (3; 3a; 23) which is within and small in relation to the volume of the total action space (1; 21). The non-combustible gas is used, in addition, as propellent gas for at least one hydraulic accumulator (10; 14; 30) for spraying of the liquid fog. The spraying of the non-combustible gas is initiated at least essentially simultaneously with the spraying of the liquid fog.

Abstract: The object of the invention is to provide a new fire protection system for hotels, office buildings, industrial plants or whole communities. The unit which is to be protected is provided with an automatic fire fighting installation preferably operated by high pressure hydraulic accumulators, for initial fighting of a fire in order to at least suppress the fire. The fire is finally extinguished with the help of a fire truck with a water tank connectable via a high pressure pump (3) in the truck to the said fire fighting installation. The drive shaft of the pump is connected to the cardan shaft (6) of the truck engine (1) for utilizing the total power of the engine. The fire truck can be made small and the system, operating with a small amount of water, is in particular of advantage for warm regions with limited or scarce water resources.

Abstract: A method for fighting fire uses a source of fire-extinguishing liquid, a source of gas at an available pressure, and interconnected hydraulic accumulators including at least one gas container and at least one liquid container. The hydraulic accumulators are charged by interconnecting the hydraulic accumulators into fluid communication with each other, initially filling the hydraulic accumulators with the gas at the available pressure from the source of the gas, and subsequently filling the liquid container with the fire-extinguishing liquid from the source of the fire-extinguishing liquid so that the fire-extinguishing liquid drives the gas from the liquid container into the gas container and compresses the gas in the gas container to a desired initial charging pressure and directs the fire-extinguishing liquid toward the fire upon occurrence of the fire. For the directing the gas presses the fire-extinguishing liquid out of the liquid container at the charging pressure toward the fire.

Abstract: The object of the invention is to provide a new method for extinguishing fires. The method is advantageously used for fighting fires in engine rooms and similar spaces. According to the method, the fire is extinguished or at least suppressed by means of concentrated fog sprays with strong penetrating power, by utilizing high operating pressure, which is gradually decreased for the provision of spread fog-like liquid spraying providing for effective heat absorption and control of fire. The extinguishing liquid is preferably delivered to spray heads (43, 44, 45) by using hydraulic accumulators (41, 41a).

Abstract: Fire-fighting equipment has a hydraulic accumulator which contains fire-fighting liquid and a space for a pressure gas, a source of the pressure gas, a connection for connecting the pressure gas of the source to the hydraulic accumulator, and an outgoing tube from the hydraulic accumulator for discharging the fire-fighting liquid from the hydraulic accumulator for fire-fighting use. A gas inlet in the hydraulic accumulator receives the pressure gas from the connection. The tube supplies a portion of the pressure gas to the space for the pressure gas in the hydraulic accumulator. A rising tube in the hydraulic accumulator supplies the fire-fighting liquid from the hydraulic accumulator to the outgoing tube when the pressure gas is supplied to the space for the pressure gas in the hydraulic accumulator. A throttle connected to the connection mixes another portion of the pressure gas into the fire-fighting liquid supplied to the outgoing tube.

Abstract: A fire extinction device uses water which is driven by compressed air. Upon passing the water through a dosing apparatus, where the water is mixed with a foaming liquid, the air foam is generated and then expelled through a foam spout. The device includes, among other elements, an air compressor, a first tank containing the water, a second tank containing the foaming liquid, and a fire hose through which the water and foaming liquid mixture passes.

Abstract: A fire fighting system has a liquid source, a pump connected to the liquid source having an outlet line with spray heads for providing a high liquid pressure and a comparatively small flow, and a gas source of propellant gas connected by way of a line to the outlet line for mixing gas with the liquid into a flow of an extinguishing fluid delivered to the spray heads. The gas source is connected to the outlet line of the pump for producing a finely divided liquid mist, an initial charge pressure of the gas source being at least as high as the high liquid pressure provided by the pump. At least one liquid tank is between the gas source and the outlet line.

Abstract: A method for fighting a fire in a narrow space fog-form sprays an extinguishing medium in a direction along the narrow space from a first nozzle and fog-form sprays the extinguishing medium in the direction along the narrow space from a second nozzle that is spaced from the first nozzle in the direction along the narrow space for the fog-form sprayings to strengthen each other in capacity and penetration from availability of air behind and close to each of the nozzles.

Abstract: A method of fighting a fire drives a first fire-extinguishing liquid from at least one spray head or sprinkler at a fire with a low-pressure pump. Thereafter it drives a second fire-extinguishing liquid from a liquid container and the spray head or sprinkler at the fire with a first propellant gas from at least one gas container, at least some of the first propellent gas remaining in the gas container after all of the second fire-extinguishing liquid has been driven from the liquid container. Still thereafter it again drives the first fire-extinguishing liquid from the spray head or sprinkler at the fire with the low-pressure pump, the low-pressure pump being driven by the first propellant gas that was remaining in the gas container.

Abstract: The object of the invention is to provide a new method and a new equipment for extinguishing fires especially in engine rooms and similar spaces. The fire is extinguished or at least pressed down by means of concentrated fog sprays with strong penetrating power, by utilizing high operating pressure, which is gradually decreased for the provision of spread fog-like liquid spraying. The extinguishing liquid is preferably delivered to spray heads (43, 44, 45) by using hydraulic accumulators (41, 41a).

Abstract: The object of the invention is to provide a new method and a new installation for fighting fire, including difficult smouldering fires, such as cable fires e.g. in the upper region of a room where the walls meet the ceiling. The fire is initially, in a first step, fought by means of at least one fog-like liquid spray having comparatively large droplets and a good penetration power, in order to at least suppress the fire, and thereafter, in a second step, the initially utilized fog-like liquid spray is scattered, by mixing a pressurized non-combustible gas into the liquid, to form a turbulent liquid fog for filling the fire room at least essentially evenly and for extinguishing smouldering fire seats.

Abstract: The invention relates to an apparatus for impulse fire extinguishing which includes an ejection tube for storing fire fighting powder or liquid and a container for storing gaseous propellant. The container is connected to the ejection tube. A quick action closing element is located between the container and the ejection tube and is arranged in the container to move freely therein for separating the container into two parts: a propellant chamber and an equalizing chamber. The ejection end of the ejection tube extends into the atmosphere, and the input end thereof is arranged in the propellant chamber in a way that it is open in a first position of the quick action closing element and closed in another position thereof.

Abstract: A drive unit for a fire fighting installation operating with a high drive pressure has at least one drive gas container charged to a high pressure and at least first and second groups of hydraulic accumulators selectively connectable to the at least one drive gas container and connections which initially connect only the first group of the hydraulic accumulators to the at least one drive gas container and subsequently connect the second group of hydraulic accumulators to the at least one drive gas container.

Abstract: A low pressure, self-contained fire suppression system comprising a source of pressurized gas, a water reservoir tank containing water, a foam concentrate tank containing foam concentrate, and a water driven volumetric metering pump. The source of gas under pressure communicates with the water reservoir tank to provide a source of water under pressure. A conduit communicates the pressurized water tank with a first inlet port of the metering pump. The foam concentrate tank communicates with the metering pump via a second inlet port. Concentrate is supplied to the metering pump at a predetermined volumetric flow rate in response to water flowing through the metering pump. The source of pressurized gas also communicates via a conduit with the outlet port of said metering pump to thereby introduce gas under pressure to the water/foam concentrate mixture as it exits the metering pump. The water, foam concentrate and gas mixture is passed through a conduit, such as a hose, wherein a foam is generated.

Abstract: In fire-fighting equipment having a drive unit for supplying extinguishing liquid, the drive unit is at least one hydraulic accumulator in which a high initial drive pressure falls to a reduced drive pressure in use. The hydraulic accumulator supplies only the extinguishing liquid at the high initial drive pressure and a mixture of the extinguishing liquid and a gas at the reduced drive pressure. For this, the hydraulic accumulator has a liquid space for the extinguishing liquid and a gas space for the gas that each communicate through an outlet valve with an outlet line for the use. The outlet valve responds to the high initial drive pressure and reduced drive pressure for opening only a liquid outlet connection at the high initial drive pressure and opening also a gas outlet connection at the reduced drive pressure.

Abstract: The object of the invention is to provide new equipment for fighting fire, in particular for restaurant kitchens and similar spaces. A number of automatically releasable spray heads (1) are arranged in the space, and at least one high pressure hydraulic accumulator works as drive unit. When one spray head is released because of a fire broken out, the pressure in the accumulator (2) falls as liquid is sprayed. A pressure gard (4) is arranged to at e.g. 75% of the initial pressure of the accumulator produce a signal to release all spray heads, e.g. by connecting an electric current to heat coils (6) laid around respective release ampoules (5).

Abstract: A portable, pallet-mountable, remotely controlled deluge system provides a means for rapidly delivering a large quantity of a liquid to a region of hazardous materials or a fire. An accumulator, mounted, for example, on a pallet is charged with a quantity of water, aqueous film-forming foam, or other liquid quenching agent. The liquid is pressurized with an inert gas and the liquid is held in the accumulator by an electric/hydraulic valve. The valve is connected to a control panel which is wired to a remote control. The control panel also includes an antenna to receive a remote control signal by electromagnetic communication. The system provides a method of quickly getting a fire-fighting liquid or a deluging liquid to a scene of a fire or a hazardous waste spill without subjecting personnel to the hazard.

Abstract: A valve for a fire fighting installation has an inlet into a valve body for connection to a primary source of a first liquid under a first pressure, a liquid space in the valve body for connection to a secondary source of a second liquid under a second pressure, an outlet from the valve body for connection to an out-going line for the first and second liquids, and a connection from the inlet to the outlet and a movable spindle in the valve body for closing the connection with one end of the spindle when the spindle is in a stand-by position and opening the connection when the spindle is in an activated position.

Abstract: An apparatus for suppressing a fire comprises a gas generator in communication with a vaporizable liquid by means of a first conduit. When activated, the gas generator generates an elevated temperature burst of a first gas containing carbon dioxide, nitrogen, and/or water vapor. This first gas vaporizes substantially all of the vaporizable liquid, generating a second gas having flame suppressing capabilities. The second gas is directed at the fire to suppress and extinguish it.

Abstract: An airborne foam delivery apparatus is adapted to be carried as a slung bucket beneath a helicopter to deliver a high volume of fire suppressant foam for wildland firefighting. The delivery apparatus comprises a liquid tank for holding a foamable liquid. A support frame extends downward from the liquid tank to support the liquid tank above the ground during ground operations. Three nozzles are directed generally downwardly from beneath the liquid tank within a protective apron. A liquid valve is positioned between the liquid tank and the each nozzle. Each liquid valve is remotely operable to allow passage of the foamable liquid through the corresponding nozzle. A pressure regulator is connected to receive compressed air from gas containers mounted within the liquid tank, and to controllably discharge the compressed air into the liquid tank to maintain a positive regulated pressure within the liquid tank.

Abstract: A process and apparatus for the fine dispersion of liquid or powder in a gaseous medium, preferably in air. The liquid or powder is placed into an ejection tube (2) and pressurized gaseous propellant (4) is conducted at explosion-like speed behind the charge (1). The apparatus has an ejection tube (2) containing the liquid or powder charge (1), a propellant container (3) connected with one end of the ejection tube (2). The ejection tube (2) and propellant container (3) are interconnected by at least one transfer port (8) closed by a quick-action locking element.

Abstract: An improved method and apparatus for delivering compressed particulate solid fire fighting agent includes a pneumatic system for entraining particulate fire fighting agent in a high pressure gas stream, compressing the agent into quasi-discrete quasi-solid slugs, and delivering the compressed slugs in a constant stream at a high rate of speed to the center of the fire being fought from a safe distance. The system includes a high pressure gas supply, a pressure regulator, a pressure compensator, a pressure sink, an agent storage vessel, and a multi-stage delivery nozzle including a pressure imbalance mechanism. Particulate agent is sequentially compressed in the multiple nozzle stages by virtue of a pulsating gas supply effect, and ejected in a constant stream of solid slugs at speeds near or above Mach 1.

Abstract: In the fighting of fires or protection of objects from fire by applying thereto water, the improvement which comprises dispersing in the water particles of a cross-linked water-insoluble but hightly water-swellable acrylic acid derivative polymer in an amount insufficient to bring the viscosity above 100 mPa's. Advantageously, the particles are present in an amount such that after swelling the swollen particles hold 60 to 70% by weight of the total water, the particles are from 0.1 to 3 mm in diameter and are present in from 0.1 to 0.6% by weight of the water, the polymer being a copolymer of an acrylic acid, the water containing silicic acid and/or a silicate as well as sodium, potassium or ammonium ions. The water is freely pumpable but the swollen particles adhere to surfaces they contact rather than running off rapidly.

Abstract: A device and a method for fire extinguishing, particularly but not exclusively useful as a fire-extinguisher for vehicles, comprises a rigid tank containing an expansible water chamber for receiving a quantity of water to be used for extinguishing a fire, and an expansible air chamber for receiving pressurized air in order to pressurize the water in the water chamber; a water inlet into the water chamber for introducing water thereinto; an air inlet into the air chamber for introducing pressurized air thereinto for pressurizing the water in the water chamber; a discharge nozzle from said water chamber for discharging water therefrom in the form of a fog jet; and a control valve for controlling the discharge of water from the water chamber through the discharge nozzle.

Abstract: A fire and smoke suppression system suitable for passenger aircraft capable of `surviving` a crash consists of a plurality of individually and independently operable unit (17) each including its own self-contained supply of fire/smoke suppressant, such as water, as well as its own self-contained supply of a pressurizing device, such as CO.sub.2 bottle (23) which, on activation, expels the suppressant under pressure. Each unit (17) is an integrated assembly including a spray head (18) terminating in a nozzle (20) in flow communication with a flexible bag tank (25) containing water and accommodated in a rigid outer shell (24).

Abstract: A device and a method for fire extinguishing, particularly but not exclusively useful as a fire-extinguisher for vehicles, comprises a rigid tank containing an expansible water chamber for receiving a quantity of water to be used for extinguishing a fire, and an expansible air chamber for receiving pressurized air in order to pressurize the water in the water chamber; a water inlet into the water chamber for introducing water thereinto; an air inlet into the air chamber for introducing pressurized air thereinto for pressurizing the water in the water chamber; a discharge nozzle from said water chamber for discharging water therefrom in the form of a fog jet; and a control valve for controlling the discharge of water from the water chamber through the discharge nozzle.

Abstract: An electronic fire protection system is disclosed which includes a central control circuit that operates a sprinkler, or other extinguishing system in responsive to a sensed overtemperature condition. The trigger temperature of the system is adjustable, and the control circuit automatically resets after the sensed temperature has been reduced substantially below the trigger temperature. An audible alarm is also actuated by the control circuit that must be manually reset to ensure that the occurrence of a fire when the protected area is vacant will not go unnoticed. A visual temperature display is provided that can be operated in a power saving mode when external power for the circuit is lost, and a battery backup is actuated. A combination valve/nozzle is utilized in the controlled extinguishing system which is normally spring biased closed, and opened in response to extinguishate pressure.

Abstract: Fire fighting foam discharge is produced by introducing water, surfactant, and compressed air into a single mixing chamber from separate sources. A power source includes an internal combustion engine coupled by operator-controlled clutch to an output shaft for driving concurrently a water pump and air compressor.

Abstract: A fire control composition in particulate form and containing no water, which is particularly effective for fighting metal fires, i.e., Class D fires, and which comprises particles of crushed glass bearing a hydrophobic coating thereon so that agglomeration of the fire control composition due to adsorption of moisture during storage and use is substantially prevented and so that when applied to fire, the fire control composition forms a blanket over the fire which deprives the fire of oxygen and thereby smothers it. The composition additionally contains one or more particulate adjuvants selected from salts and/or spherulized vitreous beads, which adjuvants also bear a hydrophobic coating. Useful adjuvants include graphite particles and salts. The median grain size of the crushed glass is below 200 micrometers, preferably below 120 micrometers, for example, in the range of from 25 to 35 micrometers.

Abstract: Fire extinguishing plant for three extinguishing agents, water, powder-mixed water and heavy foam, comprising water supply conduits (4, 5, 6) from a source of pressurized water to a number of spraying nozzles (2, 3), and wherein there to the water supply conduits (4, 5, 6) being provided an inlet (7) for admixing foam agent. Moreover, to each nozzle (2, 3) therein being provided supply conduits (9, 10, 11) for a non-combustible gas, siad conduits having a device (13) for admixing fire extinguishing powder into the gas. The supply conduits for the non-combustible gas have a non-return valve (28) adjacent the outlet; there being provided a bypass conduit (14) in the gas supply conduit past the device (13) for the admixing of powder.An arrangement in spraying nozzles for use in the plant comprises a preferably circular housing (15), on end of which is closed, the other end thereof being open and having a radially extending annular flange (32).

Abstract: This invention relates to novel compositions and methods for neutralization and solidification of hazardous alkali spills. A dry particulate composition containing an organic neutralizing acid and, materials having varying adsorption rates may be used to neutralize alkaline spills, and solidify the spills to render them harmless. These compositions may be applied to the spills by fire-extinguisher-like delivery devices which spread the compositions on the spills from a relatively safe distance without splattering the hazardous materials.

Abstract: An elevator cab fire extinguishing system is carried by an elevator cab and is arranged to discharge a non-toxic fire extinguishing agent into the interior of the elevator cab in response to a fire in the elevator cab to extinguish the fire quickly and without harm to passengers and property present in the elevator cab, and includes controls responsive to the discharge of the fire extinguishing agent for automatically shutting down the ventilation fan of the elevator cab, sounding an audible alarm, and delivering the elevator cab to a designated egress level in the building within which the elevator cab travels.

Abstract: This invention relates to novel composition and methods for neutralization and solidification of hazardous acidic spills. A dry particulate composition of varying reaction grades of alkaline compounds and varying grades of absorptive materials may be used to neutralize and solidify acidic spills, solidify the spills and render them harmless. These compositions may be applied to the spills by fire-extinguisher-like delivery devices which spread the compositions on the spills from a relatively safe distance without splattering the hazardous material.

Abstract: Aerosol solutions for use in treating consumer goods to render them fire-proof are formulated for packaging under pressure in a valved container, and comprise a mixture of ammonium salts and an alkali metal silicate. The solution may further comprise one or more of urea, ammonium bromide, a low molecular weight alcohol, an aromatic oil, a surfactant, an acid, fragrance, etc. A method for making the solution is also disclosed.

Abstract: A portable fire fighting apparatus has a plurality of tanks containing a variety of fire fighting agents, a piping arrangement for selectively connecting the tanks to respective discharge nozzles, and a central control panel which is provided with a plurality of control valves and elements for selectively controlling the discharge of the fire extinguishing agents through the nozzles. In a preferred embodiment, the apparatus has three tanks containing water, a chemical fire extinguishing agent, and a foam concentrate, respectively. Water only or a water/foam concentrate mixture is controllably discharged through a first nozzle, while the chemical fire extinguishing agent may be separately or simultaneously discharged through a second nozzle. A piping arrangement for purging the nozzles following discharge is provided and is controllable from the central control panel. The apparatus may be adapted for mounting on a truck, a forklift, or other vehicle.

Abstract: There is disclosed, in one aspect, a dispensable flame-extinguishing composition comprising approximately 5 to approximately 20 percent by weight bromotrifluoromethane and approximately 95 to approximately 80 percent by weight bromochlorodifluoromethane and a residual air weight at 70.degree. F. which varies inversely to the degree of vacuum pulled under constant volume. For vessels ranging in size from 127 mls. to 325 mls. at a temperature of 70.degree. F. the amount and weight of residual air will vary from approximately 0.047 grams to 0.390 grams for a 22" Hg vacuum to no vacuum being pulled. The composition utilizes residual air to dispense the extinguishing agents in the temperature range of -40.degree. F. to room temperatures. In another aspect, there is disclosed a method for extinguishing fires. This method comprises applying to the fire the above-described composition. This composition is particularly useful in hand-held fire extinguishers.

Abstract: The danger of explosion due to decomposition of high-pressure industrial process gases, such as ethylene, is reduced by beginning to cool the decomposition gases with a delay of no more than 25 milliseconds from the onset of flow of the gases out of a high-pressure vessel.The process may be implemented by using apparatus comprising:(1) means containing an inert gas at a pressure P between about 5 and 50 bars and an inert liquid of high heat of vaporization; and(2) a valve located upstream of an inert-liquid dispersing-means, of which the opening is operated by a means detecting the opening of a safety means of the high-pressure vessel and operating the working of the dispersing means.The apparatus is useful for the recovery of decomposition gases in order to avoid atmospheric pollution, as well as for reducing the risk of explosion.