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| Number | Title | Issue Date |
| 8147239 | Method of controlling gas type clothes dryer Disclosed herein is a method of controlling a gas type clothes dryer. The method control the dryer to continuously detect condition of a flame sensor even after ignition of the dryer, thereby preventing a drying operation from being performed when a flame has been e... | 04/03/2012 |
| 7568909 | Burner ignition and control system A battery powered ignition and control system for a gas burner includes circuits for controlling a pilot burner, a main burner, a flame sensor and an igniter. Mechanically latched valves, which require power only to switch between and open and closed state are used ... | 08/04/2009 |
| 7314370 | Automated operation check for standing valve A method of verifying proper operation of an electromagnetic valve. The method includes providing a mechanism to effect opening of the valve, verifying that the valve opened as a result of employing the mechanism to effect opening of the valve and after verifying th... | 01/01/2008 |
| 7044729 | Gas burner control for a bake oven The system (1) for controlling the combustion (7) of a cooking oven burner (2), comprises in combination a thermostat valve (3) with a rotary hand knob (4) and a non-electric temperature sensor (6) for modulating the burner ... | 05/16/2006 |
| 6776608 | Method and means for a security control of burners A method for a security control of a burner, provided with a body comprising a diffuser in which apertures for the flow of a mixture of air and fuel are made, comprises detecting a temperature representative of the temperature of said diffuser in at least one zone o... | 08/17/2004 |
| 6653790 | Automatic gas lamp with safety control circuit A gas lamp system and method for lighting the system which utilizes a sparkless flame starter in close proximity to the torch to create a flame. The system further includes a safety control circuit which activates the sparkless flame starter and subsequen... | 11/25/2003 |
| 6322352 | Gas burner system 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 val... | 11/27/2001 |
| 6099295 | Power phase regulator circuit improvement motor start switch self-adjusting preheat and ignition trial improvement and series-type voltage regulator improvement to hot surface ignition controller for fuel oil burner A fuel oil burner utilizing a hot surface ignition with an ignitor that is fully sintered and has essentially no porosity, a voltage phase regulator circuit for applying rectified half-wave AC line voltage, full-wave rectified AC, or either half-wave or f... | 08/08/2000 |
| 6059562 | Gas appliance with automatic gas shut-off device responsive to flame outage A gas appliance is provided for producing an open flame. The gas appliance includes an elongated gas tube, a gas inlet, a nozzle, a flame sensor, a gas shut-off valve, and a protective member. The gas tube has a proximal end and a distal end. The gas inle... | 05/09/2000 |
| 6033211 | Emitter apparatus An apparatus for drying a moving substrate containing a multiplicity of infrared emitters and a detection emitter and a device for supplying a mixture of air and gas to these emitters. The detection emitter contains an emitter body with a diffuser for dis... | 03/07/2000 |
| 5961311 | Burner re-ignition system having a plurality of flame sensors A gas burner system including a burner body having a flange providing an annular surface. A removable cap is disposed above the burner body and contacts the annular surface for forming an annular interface with the burner body for closing the burner body.... | 10/05/1999 |
| 5902098 | Method for controlling an ignition for a gas boiler A method for controlling an igniting operation for a gas boiler for preventing an explosive ignition is disclosed. The gas boiler is equipped with a burner for burning a gas, a fan for exhausting a burnt gas in the burner, and an ignition plug for perform... | 05/11/1999 |
| 5899684 | Power phase regulator circuit improvement, motor start switch, self-adjusting preheat and ignition trial improvement, and series-type voltage regulator improvement to hot surface ignition control for fuel oil burner A fuel oil burner utilizing a hot surface ignition with an ignitor that is fully sintered and has essentially no porosity, a voltage phase regulator circuit for applying rectified half-wave AC line voltage, full-wave rectified AC, or either half-wave or f... | 05/04/1999 |
| 5636978 | Combustion apparatus A gas burning power supply section 10 for igniting gas includes a secondary battery and a solar battery for charging the secondary battery, and the operating voltage from the power supply section 10 is supplied to a gas ignition circuit 30, a flame detect... | 06/10/1997 |
| 5567144 | Hot surface ignition controller for fuel oil burner A fuel oil burner utilizing a hot surface ignition with an ignitor that is fully sintered and has essentially no porosity, a circuit for applying AC line voltage to the ignitor and to a blower motor, an AC-to-DC converter for providing twelve volts DC for... | 10/22/1996 |
| 5435717 | Burner control system with continuous check of hot surface ignitor during run cycle A fuel valve and ignitor control system in which pull-in current for a fuel valve operating on rectified alternating current is supplied through a first normally open relay whose coil is connected in series with normally open contacts of a second relay an... | 07/25/1995 |
| 5347982 | Flame monitor safeguard system A gas burning fireplace having a burner for producing a flame. A rod in the vicinity of the burner. A gap between the burner and the rod and wherein a flame is produced in the gap. An apparatus for monitoring the presence of a flame including a battery fo... | 09/20/1994 |
| 5131837 | Backup trial for ignition timer A gas valve control system including a microprocessor, a first relay, a second relay, flame sensor and a timer. The timer is connected to the switch which is connected in the power supply path of the second relay. The second relay is connected to the valv... | 07/21/1992 |
| 5085573 | Hot surface ignition system for a gas furnace, control device therefor and methods of making the same A hot surface ignition system for a gas furnace or the like, control device therefor and methods of making the same are provided, the system comprising a burner, a settable thermostat, an electrically operable gas valve, a control unit, and an electricall... | 02/04/1992 |
| 5077550 | Burner flame sensing system and method The presence of a flame from a burner is determined by analyzing the signal produced by a radiation sensor aimed at a burner. Specifically, a Fourier transformation is applied to the signal producing amplitude values for a spectrum of component frequencie... | 12/31/1991 |
| 5026270 | Microcontroller and system for controlling trial times in a furnace system A microcontroller and system allowing for more than one trial time in a furnace system, while using only one pin of the microcontroller. An alternating current signal at an input port of the microcontroller causes the microcontroller to allow a first long... | 06/25/1991 |
| 5009588 | Time-delay circuit for automatic shutdown of furnace systems Time-delay circuit for automatic shutdown of furnace systems has an induced draft blower motor and a first circuit for providing energy to the blower motor from an energy source. A second circuit for energizing the primary control system of the furnace, i... | 04/23/1991 |
| 4997361 | Hot surface direct ignition system for gas furnaces A low cost hot surface ignition system particularly adapted for use in gas furnaces and the like, the system including low voltage control and timing circuitry effective to control a gas valve and high voltage ignition circuitry incorporating a hot surfac... | 03/05/1991 |
| 4976605 | Hot surface ignition system for a gas furnace, control device therefor and methods of making the same A hot surface ignition system for a gas furnace or the like, control device therefor and methods of making the same are provided, the system comprising a burner, a settable thermostat, an electrically operable gas valve, a control unit, and an electricall... | 12/11/1990 |
| 4955806 | Integrated furnace control having ignition switch diagnostics An integrated electronic control arrangement is disclosed in the illustrative environment of burner such as in a gas-fired furnace. The control incorporates a self-test feature which shuts down the furnace in the event of any one of a number of possible s... | 09/11/1990 |
| 4856984 | Time-delay for automatic reset of furnace Automatic reset for an unattended gas furnace has an induced draft blower motor energized by an electrical power source and with a first, normally "open", relay switch in circuit to control the operation of the blower motor. A burner control circuit, ener... | 08/15/1989 |
| 4783600 | Automatic controller of the master gas switch An automatic controller for a master gas switch includes a timer for keeping the switch opened for a selectable time. The controller includes an electrical motor for rapidly closing the switch. The motor is responsive to two conditions: When the timer rea... | 11/08/1988 |
| 4717333 | 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 ... | 01/05/1988 |
| 4695246 | Ignition control system for a gas appliance An ignition control system for a direct ignition gas appliance, such as a furnace. A main gas valve, spark generator, flame sensor, and purge blower are all interconnected to a single controller. The controller issues a purge signal to the blower for a fi... | 09/22/1987 |
| 4662838 | Fuel burner control system A control system including a valve for controlling the flow of fuel to a burner, a resistive heater element connected between first and second terminals and disposed for igniting fuel emanating from the burner, an isolation transformer comprising a heater... | 05/05/1987 |
| 4655705 | Power gas burner for wood stove A power burner adaptable for use in conjunction with a wood burning stove employs a blower to produce a forced flow of air and a fuel valve which provides selective fuel communication with a fuel nozzle. Forced air and fuel is mixed in the nozzle and prop... | 04/07/1987 |
| 4652231 | Gas control circuit An improved electrical circuit for controlling the operation of a gas solenoid valve which regulates the flow of gas to a burner. Field effect transistors, whose operation is controlled by a flame rectification circuit and/or a timing circuit, directly co... | 03/24/1987 |
| 4604046 | Direct ignition gas burner control system A direct ignition gas burner control system includes a microcomputer for controlling energizing of an electrical resistance igniter, for subsequently effecting flow of gas to the burner when the igniter is at gas ignition temperature, and for effecting co... | 08/05/1986 |
| 4575333 | Flame monitor time delay control Apparatus for monitoring flames is provided with means for sampling both the value of a flame and the period of time during which a flame remains above a given intensity level during start-up. Flame-off delay means is also provided in combination with mea... | 03/11/1986 |
| 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 |
| 4565520 | Recycling pilot ignition system An improved system including a circuit for igniting a pilot burner each time heat is called for by a thermostat. The main burner is ignited by the standing pilot upon detection of pilot ignition. Trial ignition over a limited period of time is provided. M... | 01/21/1986 |
| 4522337 | Digital control circuit In a digital control circuit, a clock pulse is counted so that when a predetermined timing is reached the driving of a load is controlled. The digital control circuit may preferably be an integrated circuit for controlling the combustion of a burner for a... | 06/11/1985 |
| 4496305 | Ignition control circuit for a boiler system An ignition system for a furnace or boiler where a predetermined number of firing pulses are generated between timing intervals to allow purging of the combustion chamber. If combustion occurs, the firing pulses are terminated. If combustion does not occu... | 01/29/1985 |
| 4459097 | Fuel burner control apparatus A fuel burner control system including a valve for controlling the flow of fuel to a burner, a resistive heater element for igniting fuel, a power supply for supplying current to the heater element, a flame sensing circuit comprising an ac source for supp... | 07/10/1984 |
| 4451226 | Flame safeguard sequencer having safe start check A purge time hold circuit is provided in a flame safeguard sequencer to in turn provide a safe start check of a burner control system. If a flame is indicated during a prepurge period, the purge time hold means will reset to a zero status and the timer wi... | 05/29/1984 |
