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| Number | Title | Issue Date |
| 7252502 | Method and system for combined standing pilot safety and temperature setting The method and apparatus provides a controller (which might comprise a microprocessor) that can control gas flow to a pilot burner in fluid communication with a manual pilot valve and an automatic pilot valve. The exemplary embodiments can comprise a selectable inpu... | 08/07/2007 |
| 7252109 | Safety device for a lighting valve of a gas burner A safety device (61) for a lighting valve (23) of a gas burner, comprising a starting button (36), a return spring (57), a cutoff shutter (42) controlled by the starting button (36), a control shutter (41) for a pilot... | 08/07/2007 |
| 7170762 | Low voltage DC-DC converter A direct current to direct current voltage converter (DC-DC converter) in accordance with the invention comprises a transformer coupled with a voltage source and a self-starting oscillator that includes a secondary winding of the transformer, a capacitor; and a firs... | 01/30/2007 |
| 7097030 | Long, flexible conveyor belt modules in modular plastic conveyor belts A modular plastic conveyor belt constructed of flexible belt modules molded out of a material such as a flexible elastomeric compound that enables the belt to wrap closely around drive sprockets. Drive elements in the bottom of the belt are uniformly spaced in the d... | 08/29/2006 |
| 7047995 | Gas valve switch structure of gas stove A gas valve switch structure of a gas stove includes a top base, an aluminum plate, a sealing washer, two rubber washers, two fixing pieces, a female base, and a protective plate. The protective plate is used for sealing the rubber washer and the fixing piece in the... | 05/23/2006 |
| 6955301 | Water heater and control An improved heater and method of controlling the same is provided. The water heater has the combination of a tank for holding water, a heater for heating the water, a controller having logic to regulate the heater, and first and second sensors. Each of the sensors d... | 10/18/2005 |
| 6840261 | Gas valve switch structure of gas stove A gas valve switch structure of a gas stove includes a top base, an aluminum plate, a sealing washer, two rubber washers two fixing pieces, a female base, and a protective plate. The protective plate is used for sealing the rubber washer and the fixing piece in the ... | 01/11/2005 |
| 6536459 | Control valve structure of a gas burner A control valve structure of a gas burner includes a female base, a top base, and a coil base. The control panel energizes the coil base to generate a magnetic field, whereby the magnetic column is displaced upward by the magnetic force of the coil base, ... | 03/25/2003 |
| 5941699 | Shutoff system for gas fired appliances Shutoff system for a gas fired appliance includes a shutoff for increased carbon monoxide concentration. A proximity sensor is associated with a thermocouple and conventional solenoid shutoff valve. Slight changes in the current resulting from temperature... | 08/24/1999 |
| 5931655 | Temperature control system with thermoelectric and rechargeable energy sources A temperature control system for a gas-fired appliance which uses a thermoelectric device to develop power for recharging a primary energy source, such as a rechargeable battery. The present invention provides a reliable and efficient system for controlli... | 08/03/1999 |
| 5779466 | Gas flow controller A gas flow rate controller arranged between a gas burner and a flammable gas source and a combustion-assisting gas source includes a gas flow rate setting means for producing a flow rate setting signal corresponding to a preset flow rate of gas flowing to... | 07/14/1998 |
| 5752818 | Carbon monoxide detection and automatic deactivation system A carbon monoxide detection and automatic deactivation system including a fuel burner having a fuel supply conduit coupled thereto. A pilot igniter is situated adjacent to a pilot supply conduit and is adapted to provide a flame in an interior space of th... | 05/19/1998 |
| 5720604 | Flame detection system A flame sensor senses the intensity of a pilot flame to determine whether main burner ignition has occurred in a gas furnace. The sensor includes a computer which is operative to trigger the sensing of the flame intensity following the provision of gas to... | 02/24/1998 |
| 5538416 | Gas burner controller with main valve delay after pilot flame lightoff A controller for a gas burner system compensates for the tendency of a flame rod sensor in the burner system to on occasion provide a spike in its signal on first lightoff of a pilot flame, by delaying the signal which causes opening of the burner system'... | 07/23/1996 |
| 5281129 | Combustion apparatus and control method therefor To provide a combustion apparatus and a controlling method therefor which are capable of preventing the flame-out and backfire of the flame of a premix burner and the increase of the NOx concentration attributable to the change of the calorific value of t... | 01/25/1994 |
| 5222887 | Method and apparatus for fuel/air control of surface combustion burners A fuel/air control system for use in controlling the operation of a surface combustion burner includes a photodetector that provides electrical signal equivalents of burner flame emission to a controller. The controller simultaneously receives signals ind... | 06/29/1993 |
| 4975043 | Burner control device, system and method of making the same A control device for supplying fuel to a burner means, a system therefor and methods of making the same are provided, the device comprising a housing having an inlet for being interconnected to a source of fuel and having an outlet for being interconnecte... | 12/04/1990 |
| 4866363 | Fail-safe potentiometer feedback system A fail-safe electronic position monitoring system for a motor is specifically described in a flame safeguard system. The same fail-safe system could be used more generally in any type of positional monitoring system using a potentiometer. The potentiomete... | 09/12/1989 |
| 4832070 | Flame failure devices The invention provides a flame failure device in which the reservoir exposed to the flame is charged with air and is communicated via a capillary tube to displace a membrane and hold the main valve in an open position, and the valve is closed by a spring ... | 05/23/1989 |
| 4802841 | Operation apparatus An apparatus which is operated for opening and maintaining the flow of a gaseous fuel to a burner only after the fuel is ignited in a gas appliance, such as a gas room heater. More specifically, the apparatus has a lever with three operating positions, a ... | 02/07/1989 |
| 4770629 | Status indicator for self-energizing burner control system A self-energizing burner control system for a fuel burner is accomplished by heat from a pilot flame energizing a thermoelectric generator. The thermoelectric generator supplies power to an oscillator. The oscillator has an output that is stepped up in vo... | 09/13/1988 |
| 4696639 | Self-energizing burner control system for a fuel burner A self-energizing burner control system for a fuel burner is accomplished by heat from a standing pilot energizing a thermoelectric generator. The thermoelectric generator supplies power to an oscillator. The oscillator has an output that is stepped up in... | 09/29/1987 |
| 4613300 | Burner safety system 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 th... | 09/23/1986 |
| 4565519 | Burner ignition system An electronic ignition system for a gas burner is battery operated. The battery voltage is applied through a DC-DC chopper to a step-up transformer to charge a capacitor which provides the ignition spark. The step-up transformer has a significant leakage ... | 01/21/1986 |
| 4543974 | Gas valve with combined manual and automatic operation A gas valve assembly has a safety valve and two controlled valves connected in series. A first of the controlled valves is electromatic and a second is a conventional pressure controlled valve. A control knob provides for manual control of the safety valv... | 10/01/1985 |
| 4533315 | Integrated control system for induced draft combustion An integrated, closed loop system for controlling the fuel to air ratio in an induced draft combustion chamber which has a control pilot through which a draft is induced so that the fuel to air ratio in the control pilot chamber has a predetermined ratio ... | 08/06/1985 |
| 4529373 | Burner safety ignition system allowing for electrical and manual operation A system is provided for igniting and monitoring a fuel burning heat source which comprises a thermoelectric safety burner valve, a thermocouple to be heated by a pilot burner, a fuel source feeding fuel to a pilot feed valve and to a main burner feed val... | 07/16/1985 |
| 4318687 | Gas burner control system A burner system of the type in which a thermocouple or like EMF-generating sensor detects the presence of a pilot flame and controls a main fuel valve to hold the latter open as long as the pilot flame remains lit. According to the invention, the main val... | 03/09/1982 |
| 4239480 | Fluid bed furnace and pilot light assembly An improved fluid bed furnace which includes a new and improved pilot light assembly and which is of the type having a fluid bed comprising material which fluidizes upon being subjected to a flow of gas mixture therethrough and a burner for burning a fuel... | 12/16/1980 |
| 4238184 | Flame detection system using a voltage clipper means A fuel ignition system that uses a high voltage spark generator and a flame rectification detecting circuit is disclosed. The system utilizes a voltage clipping means in the form of a neon tube to prevent the high voltage of the ignition system from inter... | 12/09/1980 |
| 4207053 | Igniter and flame sensor assembly for gas burning appliance An igniter and flame sensor electrode assembly which is suitable for mounting in a conventional thermocouple bracket in close proximity to a fuel burner so that the assembly can be employed in an ignition system to ignite the burner and sense a flame due ... | 06/10/1980 |
| 4087231 | Slow-opening gas valve A gas valve having first and second redundant valve members, disposed in a passageway between an inlet and an outlet of the valve which are individually operable to open and close respective inlet and outlet valve ports, and a pressure regulating apparatu... | 05/02/1978 |
| 4087230 | Fuel ignition system providing fuel shutoff under simultaneous failure conditions A control arrangement for a fuel ignition system including redundant pilot and main valves, includes a thermal heat sensor mounted on a heat exchanger or in an exhaust stack of main burner apparatus and having a heating element which is energized in respo... | 05/02/1978 |
| 4059386 | Combustion heating apparatus to improve operation of gas pilot burners A gas pilot burner arrangement in which only air from the blower discharge plenum connected to the main gas burner is initially supplied to the pilot burner to mix with gas being supplied to the pilot burner through the pilot gas conduit and when a flame ... | 11/22/1977 |
| 3992137 | Gas burner A gas burner for a water heater provides a unitary bracket removably connected to a gas supplying tube and supporting both a pilot burner and a main burner. The unitary support bracket includes a U-shaped portion surrounding an air-gas mixing area communi... | 11/16/1976 |
| 3963410 | Control system for domestic gas oven burners An oven burner control system having a manual rotary valve controlling gas flow to main and pilot burners and a solenoid operated valve controlling flow to the main burner, control circuit means embodying spark ignition means to ignite the pilot, means re... | 06/15/1976 |
