Abstract: A cooking apparatus includes a housing and a cooking plate. Burners are located within the housing and below the cooking plate. A non-powered mechanical thermocouple probe is proximate to a pilot burner with a bi-metal element that produces an electrical signal when heated by the pilot burner. A pilot shutoff valve has an inlet connected to receive gaseous fuel from a gaseous fuel manifold, a pilot output connected to deliver gas to the pilot burner, a main burner output connected to deliver gas the burners, and a thermocouple probe input connected to receive the electrical signal produced by the bi-metal element. The pilot shutoff valve is biased to a default closed position where gas is prevented from flowing from the inlet to the pilot output and from the inlet to the main burner output. When the pilot shutoff valve is open, the pilot shut off valve permits gas to flow from the inlet to the pilot output and from the inlet to the main burner output.

Abstract: A stove burner safety system has an electromagnetic valve and a manual gas cock controlling the gas flow to the burner and a spark plug adjacent the burner which receives a spark pulse from the electric circuitry which also controls an electromagnetic valve. When the stem of the manual valve is actuated a switch turns on the electric module and when a flame failure is detected a train of a certain number of spark pulses is supplied to the spark plug and if reignition does not occur within a certain number of pulse or a certain time, the electromagnetic valve is turned off.

Abstract: A safety system for a gas burning device, such as a gas range having a plurality of burner assemblies. The safety system generally comprises a gas supply valve, a gas flow sensor, a gas leak warning circuit, a no-flame warning circuit, a gas supply valve controller for receiving warning signals from the warning circuits and for closing said gas supply valve in response thereto and a fan controller for activating the fan. Other warning circuits include a timer warning circuit and a smoke detection warning circuit. A display panel shows which warning circuit has issued a warning signal. A microprocessor may perform many system functions.

Abstract: Gas leakage protection apparatus includes a pressure-differential sealing device and a thermal electricity converting device installed at a burner head for converting the heat of the fire into electric energy which is supplied to a solenoid valve at a bottom of a body to ensure smooth flow of gas through an opening of a gas duct. When the fire is out, the temperature drops so that the converting device cannot supply energy to the solenoid valve, causing the opening to be blocked and gas cut off. The pressure-differential sealing device consists of two interlocking L-shaped connecting tubes. A control element having a small-diameter inner bore and a large-diameter inner bore is disposed in one of the connecting tubes. The wall of the large-diameter inner bore is circumferentially provided with multiple holes. A control rod having a bottom flange fitted with a washer is disposed inside the inner bores of the control element.

Abstract: A water heater is disclosed having a heat exchanger, a main burner means for heating the heat exchanger, a standing burner, a main fuel passage means for supplying fuel to the main burner, a manual valve on the main fuel passage means which is operable by a manual operation member, an automatic valve disposed on the main fuel passage means at a point downstream from the manual valve, the automatic valve adapted to open in response to the pressure of a supply of water at a water pressure sensitive member, and a standing burner fuel passage means for supplying fuel to the standing burner, the standing burner fuel passage means drawing fuel from the main fuel passage means at a point in between the manual valve and the automatic valve.

Abstract: Burner apparatus including fuel burners and a pilot light burner associated with each fuel burner. A solenoid-operated valve controls the supply of fuel to the fuel burners. Thermocouples heated by the pilot light burners energize electromagnetic coils that actuate reed switch units closing a circuit to the solenoid-operated valve. A magnet system actuates the reed switch units to close them during start up.

Abstract: The movable elements of two normally closed valves are actuated by a thermal element responsive to ignition at a pilot burner supplied fuel through one of the valves. The two valve elements form a mechanical train from the thermal element which simultaneously unseats the second valve controlling fuel to the main burner and releases a manually operable mechanism with which the pilot burner valve is initially unseated for ignition.