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Patent

Fire extinguishing system

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TLDR
An automatic fire extinguishing system for ranges having top burners, including a hood, mountable over the range, tanks containing fire extinguishers remotely located from the hood, solenoid operated valves connected in circuit with heat sensors and power lines to discharge fluid from the tanks when the heat sensors are operated as mentioned in this paper.
Abstract
An automatic fire extinguishing system for ranges having top burners, including a hood, mountable over the range, tanks containing fire extinguishing fluids remotely located from the hood, solenoid operated valves connected in circuit with heat sensors and power lines to discharge fluid from the tanks when the heat sensors are operated. The range may have electric or gas burners. A solenoid operated switch or solenoid operated valve is connected in circuit with the heat sensors to open the power line to the electrical burners or to open the gas main to the gas burners when the heat sensors operate. An automatically operated exhaust fan and audible alarms are also provided. The system includes manually operable set and reset switch means.

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Citations
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Patent

Fire extinguisher installation

TL;DR: In this paper, an automatically activated fire extinguishing device for a stove is presented, which is installable in a hood over the stove and has a compact design which substantially hides portions of the device from normal viewing.
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TL;DR: In this article, a fire extinguishing system for suppressing fires on cook stoves, fryers or other heating or heated devices with fire suppressant dispensed through nozzles is powered by batteries which provide current for both a detection circuit including a pair of heat sensors and control circuitry and current for a gas or electric house current shutoff.
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Automatic fire suppression apparatus and method

TL;DR: In this article, an automatic fire suppression unit and method for use in various fire exposures where the area in which a fire can occur is limited, manually operated portable extinguishment is either impractical or not recommended, the ability to provide additional suppression in the event of re-ignition is crucial to fire safety, or the ability of limit environmental impact of the fire suppressant is desired.
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Fire suppression system and method for its use

TL;DR: In this paper, 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, which includes a pressurized supply of fire retardant connected to a nozzle.
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Wire-sensored fire extinguisher with fault-monitoring control system

TL;DR: In this paper, a range hood positioned above a cooking range employs a continuous heat sensor system which includes twisted wires which are separated from one another by an insulator which is formed of a material which melts at a predetermined temperature.
References
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Patent

Water spray fire protection for hoods over cooking units

TL;DR: In this paper, a water spray system applied directly to cooking units in a kitchen rather than to the ventilating duct for the cooking units is described, and the system may be a wet system with water pressure maintained at spray nozzles which open in case of fire, or an open head, or dry, system controlled by thermostats and a solenoid water valve.
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Automatic fire extinguisher means

TL;DR: An automatic fire extinguishing system comprising a plurality of fire nozzles mounted on a tank containing an extinguishant under pressure, an electrically actuated valve associated with each nozzle, a heat and smoke detector for controlling each valve, and a communication circuit for sending out an alarm in response to a hazardous condition is described in this paper.
Patent

Fire extinguishing system for cook stoves and ranges

TL;DR: An automatic fire extinguishing system for a cooking range having top burners includes a hood mountable over the range. as mentioned in this paper The tank has a solenoid operated valve connected in circuit with a thermostat and power line.
Patent

Fire prevention system

TL;DR: In this paper, an automatic fire prevention system provides failsafe features as well as the capability of checking the operation of associated fire sensors, including thermal and optical types, are continually checked by a test circuit which simulates fire conditions.
Patent

Fire detection and extinguishing system

TL;DR: In this article, a fire extinguishing system in which an optical flame detector, on seeing radiation from a fire, causes energization of a solenoid valve to release an extinguishant.