Abstract: Institutional sprinkler assemblies are provided that includes a sprinkler housing and protective cap arrangement to protect a thermally responsive shielding trigger. The sprinkler housing and trigger arrangement provide for an annular buffer to protect the trigger. The institutional sprinkler assemblies include configurations for installation in pendent and horizontal and orientations.

Abstract: A temperature-sensitive automatic rapid gas generation fire extinguishing device is provided, including a box body; a plurality of heat absorption fire extinguishing units are placed on an inner side wall of the box body, and a first trigger unit is arranged between one of the heat absorption fire extinguishing units close to the first baffle and the inner side wall of the box body; the one of the heat absorption fire extinguishing units triggers the first baffle to move down through the first trigger unit, and a relatively closed space is formed in the box body; a plurality of gas generation fire extinguishing units are placed on an inner side wall of the box body, and a second trigger unit is arranged between one of the gas generation fire extinguishing units close to the second baffle and the inner side wall of the box body.

Abstract: System and methods to provide ceiling-only suppression fire protection of up to fifty feet (50 ft.) of rack storage of cartoned unexpanded plastic commodities and less hazardous commodities, such as for example, Class 1, Class 2, Class 3, Class 4 and/or combinations thereof beneath a ceiling having a maximum ceiling height up to fifty-five feet (55 ft.). The systems and methods provide for hydraulic and system parameters that include a hydraulic design area based upon five to no more than twelve hydraulically most remote sprinklers spaced at a preferred sprinkler-to-sprinkler spacing of eight to ten feet (8-10 ft.) coupled to two to four branch lines tied to a common cross main supply pipe of firefighting fluid.

Abstract: A system for delivering a cooling agent to cooking appliance to aid in fire suppression is disclosed, which includes a fuel delivery path extending from a source of cooking fuel to a heating element of the cooking appliance, a source of cooling agent selectively in fluid communication with the fuel delivery path, and a valve assembly associated with the fuel delivery path and the source of cooling agent, wherein the valve assembly is configured to control the delivery of cooling agent to the heating element of the cooking appliance and shut off the heating element from the source of cooking fuel in the event of a fire.

Abstract: A system for delivering a fire suppression agent to an obstructed cooking appliance is disclosed, which includes a fuel delivery path extending from a source of cooking fuel to a burner of the cooking appliance, a source of fire suppression agent selectively in fluid communication with the fuel delivery path, and a valve assembly associated with the fuel delivery path and the source of fire suppression agent, wherein the valve assembly is configured to control the delivery of fire suppression agent to the burner of the cooking appliance and shut off the burner from the source of cooking fuel.

Abstract: An automatic stovetop fire suppressor with suppressor activation triggering an audible alert of a fire condition and method are provided herein. A plastic bottom lid is secured to a bottom of a can, forming a closed container. A fire suppressing agent and a sound board are housed within the closed container. As the fire suppressor actuator is triggered, the bottom lid lowers releasing the fire suppressing agent and tripping a sound board alert switch. A microcontroller generates a desired fire condition signal which is played across a low voltage magnetic transducer. The suppressor is user friendly, provides an automated release of fire suppressing agent in the presence of a stovetop fire, and emits a continuing audible alert signal until a user disables the same. The fire suppressing agent and battery powered sound board are stored in the closed from manufactured end to activation of the suppressor in a fire condition.

Abstract: The invention includes components and methodology for fixed and semi-fixed systems for extinguishing fire in large industrial flammable liquid storage tanks, including aerated foam projecting nozzles discharging substantially focused streams together with aeration chambers and risers.

Abstract: A trigger unit (1) for triggering an extinguishing-agent flow in the direction of a fire zone, connected to an energy supply, having a first actuating device (3) that can be switched between a release position in which the energy supply is released, and an interruption position in which the energy supply is interrupted, a second actuating device (5) that can be switched between a release position in which the extinguishing-agent flow is released, and a rest position, a coupling unit (7) that can be moved between an operating position and an extinguishing position and permanently couples together the switching of the first actuating device (3) and the second actuating device (5). A tensioning element is connected in a force-transmitting manner to the coupling unit (7) in such a manner that a change in the tensioning state of the tensioning element always results in a movement of the coupling unit (7).

Abstract: An apparatus for discharging a fire-extinguishing agent includes a detection mechanism and a triggering mechanism. The detection mechanism includes a temperature responsive element configured to detect the presence of a fire. The triggering mechanism is operatively connected to the detection mechanism and adapted to trigger the discharge of the fire-extinguishing agent from an agent container upon the detection of the presence of a fire by the detection mechanism.

Abstract: Disclosed is a fire suppression system, a valve for the system, and a movable valve member for the valve. The system includes a reservoir for a fire suppressant material. The reservoir has an outlet, at least one nozzle from which the suppressant is delivered, and a valve governing passage of the suppressant to the nozzles. The valve includes a movable valve member and first and second valve seats cooperating therewith. The valve member is movable from a first position seated with respect to the first valve seat preventing communication between the reservoir and the nozzles, to a second position seated with respect to the second valve seat permitting suppressant flow from the reservoir to the nozzles and preventing suppressant flow to an actuator operatively associated with the valve to selectively cause movement of the valve member from the first position to the second position.

Abstract: A sprinkler head adapted for a specific yield temperature. The sprinkler head uses a heat-sensitive material composed of Sn in an amount of 0.1-2.0% by mass, Bi in an amount of 31-37% by mass and In for balance for a temperature range around 70-75° C. or a heat-sensitive material composed of Zn in an amount of 0.05-0.4% by mass, Bi in an amount of 43-55% by mass and In for balance for a temperature range around 90-95° C.

Abstract: An electronic device having an exhaust opening configured to exhaust air outside, the electronic device includes a door part configured to close the exhaust opening when the electronic device has a predetermined temperature, wherein the door part is rotated based on the own weight of the door part and a wind pressure of the air taken in the electronic device and exhausted outside the electronic device, so that the exhaust opening is closed.

Abstract: A fire extinguisher includes a bracket, a housing, extinguisher containers and a directing member such as a ramp. The fire extinguisher is designed to be located above a stove and beneath structure, such as microwave oven and vent. Such structure typically has low clearance relative to the stovetop and the burners thereon. The housing and containers are suspended from the bracket. Each container has a fire extinguishing powder and an initiator for breaching a container wall. One of the containers is directly positioned over a burner on the stovetop. The other container is offset laterally from another burner on the stovetop. The ramp is used to direct the fire extinguishing powder of this container onto the burner. The ramp is maintained in a stowed position by a fusible link, which gives way when a fire is present on the second burner causing the ramp to fall to a deployed position before the respective container discharges its powder.

Abstract: A fire extinguisher has a container filled with a fire extinguisher material. One wall of the container has tear-open segments that breach the container when opened and allow the fire extinguisher material to exit the container. An initiator forces open the tear-open segments. The initiator has a cup that is coupled to the container wall. The cup contains combustible material and is closed by a cap. The cap is bonded to the cup to form a strong initiator housing. A fuse exits the initiator to the outside of the container wall.

Abstract: An actuator for releasing a pressurized fire extinguishing composition from the cylinder of a fire extinguisher has an elongated body made of a single piece. The body has a longitudinal chamber that extends through it for holding a ram that moves along the chamber and a spring for propelling the ram, a first transverse aperture for holding a trigger that releases the spring and a second transverse aperture for holding a member that moves due to movement of the ram, where both apertures join the chamber. Movement of the member releases the composition from cylinder. A microswitch or a cable, activated by the ram, may be attached to either or both ends of the chamber.

Abstract: A sprinkler head comprises: a locking unit locked inside a second housing for maintaining a sealing state between a deflector and a first housing; a heat responding unit exposed to outside of a ceiling for releasing the locked state of the locking unit by reacting to fire when fire breaks out; and a head cover mounted at a lower side of the heat responding unit and transmitting heat to the heat responding unit after collecting heat at the time of a fire occurrence. According to this, a fine appearance of the sprinkler head is provided, and the head cover performs a heat collecting function at the time of a fire occurrence thus to have a fast reaction speed, thereby enhancing a function of the sprinkler head.

Abstract: A fast response, upright sprinkler head includes a body having a central orifice through which fire extinguishing fluid is expelled through an outlet end. A yoke, attached to the exterior surface of the sprinkler body, extends beyond the outlet end of the sprinkler body and is connected at its apex to a deflector. A fusible trigger assembly is coupled to the yoke and the outlet end of the sprinkler head. The deflector is formed with a planar member having a skirt depending therefrom and an annular ledge extending horizontally from the skirt. The skirt depends from the planar member in an outward direction at a pre-selected angle from the vertical, and is formed with a plurality of through-holes. The fast response upright sprinkler head is configured to have a K value of at least 13.5, while the fusible trigger assembly has a fusing temperature between approximately 155° F. and 175° F.

Abstract: A modular fire detection and extinguishing system is disclosed that is inexpensive, compact, and modular to allow easy aftermarket installation in a variety of vehicles. The system may include a detector, a trigger coupled to the detector and a gas generant fire extinguisher, a modular distribution line in fluid communication with the extinguisher and a nozzle. The system allows exhaust gas from the gas generant fire extinguisher to carry dry powdered fire suppressant from the fire extinguisher and through the nozzle to disperse the fire suppressant substantially uniformly throughout a fire hazard zone. The extinguisher is installed such that exhaust gas must aerate substantially all the fire suppressant before exiting the extinguisher.

Abstract: A fire suppression system for a substantially enclosed area comprises: a plurality of solid propellant aerosol generators disposed about the enclosed area for exhausting a fire suppressant aerosol that is substantially void of an ozone depleting material into the enclosed area. Each aerosol generator including an ignition element for igniting the solid propellant thereof. Each ignition element of the aerosol generators being coupled to a fire control unit which is operative to ignite the solid propellant of at least one aerosol generator utilizing the ignition element thereof to exhaust fire suppressant aerosol into the enclosed area.

Abstract: A system and method for extinguishing or controlling a fire. The system has a source of a substance which is usable to extinguish a fire in a prescribed area, a control system, and an activation system. The control system has (a) a first state in which the substance from the source is prevented from being released to the prescribed area and (b) a second state wherein the substance from the source is permitted to be released to the prescribed area to extinguish or control a fire at or adjacent to the prescribed area. The activation system has a first ignition element which ignites in response to exposure to at least one of (a) a flame, (b) heat above a predetermined temperature, and (c) a product of combustion. The control system is changeable from the first state into the second state an incident of the first ignition element being ignited.

Abstract: A fast response, upright sprinkler head includes a body having a central orifice through which fire extinguishing fluid is expelled through an outlet end. A yoke, attached to the exterior surface of the sprinkler body, extends beyond the outlet end of the sprinkler body and is connected at its apex to a deflector. A fusible trigger assembly is coupled to the yoke and the outlet end of the sprinkler head. The deflector is formed with a planar member having a skirt depending therefrom and an annular ledge extending horizontally from the skirt. The skirt depends from the planar member in an outward direction at a pre-selected angle from the vertical, and is formed with a plurality of through-holes. The fast response upright sprinkler head is configured to have a K value of at least 13.5, while the fusible trigger assembly has a fusing temperature between approximately 155° F. and 175° F.

Abstract: A fire suppression system for a substantially enclosed area comprises: a plurality of solid propellant aerosol generators disposed about the enclosed area for exhausting a fire suppressant aerosol that is substantially void of an ozone depleting material into the enclosed area. Each aerosol generator including an ignition element for igniting the solid propellant thereof. Each ignition element of the aerosol generators being coupled to a fire control unit which is operative to ignite the solid propellant of at least one aerosol generator utilizing the ignition element thereof to exhaust fire suppressant aerosol into the enclosed area.

Abstract: An automatic sidewall sprinkler includes a body, a deflector, a closure member, and a trigger. The deflector is movably mounted between a retracted position wherein at least a portion of the deflector is recessed within the body and an extended position for dispersing pressurized fluid. The deflector includes at least two horizontal deflecting surfaces for directing the fluid outwardly and downwardly from the sprinkler. The trigger applies a biasing force to urge the deflector in the retracted position and to urge the closure member to close the outlet. Upon detecting a temperature associated with a fire, the trigger releases the biasing force whereby the pressurized fluid moves the closure member off the outlet and moves the deflector to the extended position. Preferably, the trigger includes an ejector member which urges the trigger to eject outwardly from the body to improve release of the trigger from the sprinkler.

Abstract: A sprinkler head includes a body having one end adapted for connection to a supply of pressurized fluid and the other end closed by a valve element, and a thermally responsive assembly for normally holding the valve element in a closed position and opening the valve element at a preset temperature to cause the pressurized fluid to flow out of the other end of the body. The thermally responsive assembly includes a holder and a fusible alloy contained within the holder and held in place by a plunger. The fusible alloy is free of lead and/or cadmium and includes at least two materials selected from the group consisting of tin, bismuth, indium, zinc, gallium and silver.

Abstract: The invention relates to a sprinkler comprising a holder body (3), at least one nozzle (2), a heat-activated release means (18) and a cover (13) which in a protective position is arranged in front of said nozzle when the sprinkler is in an inactive mode, the sprinkler comprising means (6, 10) for providing a displacement of the cover from the protective position to a free position in which the cover keeps clear of the nozzle so that it can spray extinguishing medium when the sprinkler is in an active mode, the holder body comprising an inlet (5) for incoming extinguishing medium.

Abstract: The invention relates to a spray head comprising a holder body (3′), at least one nozzle (2′, 2c′) and a cover (13′) which in a protective position is arranged in front of said nozzle when the spray head is in an inactive mode, the spray head comprising means (6′, 10′) for providing a displacement of the cover from the protective position to a free position in which the cover keeps clear of the nozzle so that it can spray extinguishing medium when the spray head is in an active mode, the holder body comprising an inlet (5′) for incoming extinguishing medium.

Abstract: Fires in kitchen appliances are detected and controlled by a detection and control system that activates a fire extinguishing system when the fire is detected, terminates the supply of electricity and/or gas to the appliances, and initiates audible and visual alarms. The audible alarm can be terminated, while the visual alarm continues until the system is restored to a pre-detection state. The system includes a control circuit, and a fire detection means with a moveable member that engages a normally closed microswitch in the control circuit to open the control circuit. Relays in the control circuit change state upon opening of the control circuit to de-energize the appliance, and audible and visual alarms are activated. The audible alarm can be manually terminated. However, the visual alarm remains activated until the system is recharged and returned to the ready state.

Abstract: A device and a method for explosive quenching of fires are indicated, for example forest and area fires. The quenching device contains two flexible hoses (1, 2) disposed next to one another and transversely to the direction of risk (5), and closable at both ends, for accommodating quenching agents, and in each case an explosive (3, 4) in or on the hoses (1, 2) atomizes the quenching agent by its ignition to form a mist, which is applied to the fire. In order to achieve a directed ejection of the quenching agent in the direction of the area of risk, the pulse (I.sub.1) which emerges from the first hose (1) facing way from the area of risk is greater than the pulse (I2) emerging from the second hose (2) facing the area of risk. For differing hose diameters, dimensioning of the quantities of explosive in relation to the diameter of the associated hose is effected taking into account the density (of the quenching agent according to a formula according to the invention.

Abstract: The fire extinguisher particularly useful on a cooking stove, is formed by a container having a fire extinguishing powder, an explosive charge and a heat sensitive fuse. The fuse actuator the charge for forming an opening in the container through which the powder passes. A screen is located across the opening formed to meter the flow of fire extinguishing powder. A vent is provided to release the pressure in the container resulting form actuation of the explosive charge. A tiltable hanging assembly is provided as well as an extension fuse. For use on a gas stove, a system including an acoustic detector and circuity is provided for turning off the gas upon detection of the sound produced upon actuation of the explosive charge.

Abstract: A fire suppression system for use with a cookstove or range operates in several modes or stages to warn of, prevent, and extinguish stovetop fires. The system includes a pressurized supply of fire retardant connected to a nozzle. A fusible link releases the fire retardant through the nozzle. Several sensors are attached to a circuit so that increasing ambient temperature can be monitored. The supply of fire retardant is provided with a low pressure sensor which may be overridden. On sensing a first temperature increase, a fan is switched on. At a second temperature, an alarm is activated. At a third temperature, the stove is shut down. The fusible link is designed to melt at a temperature higher than the third temperature so that provisional measures may be activated prior to dispensing the fire retardant. Methods related to the fire suppression system are also disclosed.

Abstract: An apparatus arranged to orient a closure cap over an entrance opening of a chimney stack to prevent a fire from projecting through the stack with the apparatus to include a spring-biased member and a fusible link permitting release of a plug member to secure the plug member within the chimney stack upon release of the fusible link.

Abstract: A fire extinguishing system for a residential cookstove or range includes a fire extinguisher mounted above a hood in a cabinet positioned over the cookstove or range. The fire extinguisher is connected by flexible hoses and/or adjustable pipes to a pair of nozzles within the hood to dispense fire suppressant over the cookstove or range. The fire extinguisher includes an operator normally biased to the operable position, but held in the inoperable position by a cable system having a plurality of fusible or reusable, heat-activated links distributed therein. The cable system is held in tension adjacent the inner periphery of the hood and includes a section of chain to facilitate installation. Upon the occurrence of a fire, at least one of the links separates, releasing the cable system and allowing the operator to move to the operating position whereby the fire extinguisher releases the fire suppressant.

Abstract: An automatically activated fire extinguishing apparatus mounted within a stove hood. The apparatus has a plastic bag liner enclosing a composition of fire extinguishing materials under pressure within a metal necked container. A pressure gauge housing having an interior channel containing an end of the plastic liner separates the necked container from an actuating header. A plastic nipple, located in a channel of the actuating header, closes an open end of an insert connected to the plastic liner. A fire sensitive device actuates a trigger which causes a cutting ram to sever the end of the nipple to permit exit of the fire extinguishing composition.

Abstract: A fire extinguishing system for a cookstove or range includes a fire extiisher mounted above a hood positioned over the cookstove or range. The fire extinguisher is connected to a pair of nozzles within the hood to dispense fire suppressant over the cookstove or range. The fire extinguisher includes an operator normally biased to the operable position, but held in the inoperable position by a cable having a plurality of fusible links distributed therein. The cable is held in tension adjacent the inner periphery of the hood. Upon the occurrence of a fire, at least one of the links separates, releasing the cable and allowing the operator to move to the operating position whereby the fire extinguisher releases the fire suppressant. A low-voltage control circuit is used to cut off the flow of electricity or gas to the stove and to sound an alarm. A battery is provided with the low-voltage control circuit so that the system will still operate if house current is interrupted.

Abstract: A fire extinguishing system for a cookstove or range includes a fire extinguisher mounted above a hood positioned over the cookstove or range. The fire extinguisher is connected to a pair of nozzles within the hood to dispense fire suppressant over the cookstove or range. The fire extinguisher includes an operator normally biased to the operable position but held in the inoperable position by a cable having a plurality of fusible links distributed therein. The cable is held in tension adjacent the inner periphery of the hood. Upon the occurrence of a fire, at least one of the links separates, releasing the cable and allowing the operator to move to the operating position whereby the fire extinguisher releases the fire suppressant.

Abstract: A system for detecting fire in a powder spray booth having a spray gun for depositing powder onto products moving through the booth includes a switch mounted to the spray gun which is operatively connected to a control system which operates the booth and controls the supply of powder to the spray guns. A spring biases the switch toward an open, operating position in which a signal is sent to the control system to shut down the booth operation and powder supply. Under normal operating conditions, the spring force is overcome by a switch closure mechanism which comprises a fixed rod, and a movable rod mounted to the switch which is pulled toward the fixed rod to close the switch by a burnable filament extending between the rods and positioned in the path of the powder discharged from the spray gun. If a fire starts in the booth, the burnable filament is immediately destroyed and releases the movable rod so that the spring is permitted to move the switch to the open position.

Abstract: Apparatus capable of fitting over the upper exposed end of a chimney liner and operable in the event of a chimney fire to extinguish the fire, the invention can be fitted to existing chimney structures without alteration of the chimney or liner structure. The present apparatus includes an air flow restriction plate which is held in a position allowing free flow through the chimney in normal use situations, the plate being held in place by a heat fusible element. The extremely high temperatures existing during even the first moments of a chimney fire cause melting of the fusible element and therefore closing of the air flow restriction plate to restrict air flow through the chimney and thereby quickly extinguish combustion.

Abstract: An installation for contacting a fluid with a gas is disclosed and comprises an enclosure provided in the lower part of its periphery with at least one gas inlet opening and in its upper part with at least one gas discharge opening. The contact unit is composed of a combustible material, and the unit is disposed in the enclosure above the gas inlet opening and is suspended from a framework by cables and the cables are connected by temperature responsive means adapted to cause release of the cables in response to the detection of a predetermined temperature at the most equal to the flame temperature of the contact unit.

Abstract: A fire suppression and control system for a commercial cooking unit having a conventional chemical fire retardant discharge system has a flexible fire curtain supported by a hood and adapted to enclose the cooking unit from the room between the hood and the floor. A housing for storing the curtain in folded condition is positioned on the hood and includes a release mechanism for releasing the curtain from the housing when a fire occurs. A heat-responsive control for discharge of the fire-resistant chemical is coupled to the release mechanism for the curtain to release the curtain at the time the fire-retardant chemical is delivered to the cooking unit. The fire-retardant chemical is preferably a Halon 1211 gas. The release mechanism includes an electromagnetic coupling which is connected through an electrical circuit to a switch at a mechanical actuator for the valve in the chemical fire-retardant delivery system.