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| Number | Title | Issue Date |
| 7568908 | Low fire start control A direct gas-fired industrial air heater low fire start control, includes circuitry for simulating a resistant circuit which bypasses the discharge temperature sensors, the remote temperature selector, and a space temperature controls, that has the effect of driving... | 08/04/2009 |
| 7553151 | Timer relay control board A heater (12) includes a burner (16), a valve (20), and an inducer (18). A thermostat (24) is electrically coupled to the heater (12) and a control board (44) is disposed in the heater (12) and electrically con... | 06/30/2009 |
| 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 |
| 7190132 | Method and apparatus for motor control using relays An apparatus and method for controlling motors using relays is disclosed. The invention includes causing rotation of the motor in a first rotation direction if a first control signal is asserted and causing rotation of the motor in a second rotation direction if a s... | 03/13/2007 |
| 7133763 | Control apparatus for controlling a plant by using a delta-sigma modulation algorithm The invention provides a control apparatus comprising a controller for determining a manipulated variable for manipulating a controlled object so that an output of the controlled object converges to a desired value and a modulator for modulating the manipulated vari... | 11/07/2006 |
| 7082933 | Fuel valve operated by nitrous oxide pressure This invention is a fuel valve used with a nitrous oxide delivery system to control supplemental fuel flow to an engine. This valve is typically a normally closed valve which is opened by application of nitrous oxide under pressure when the nitrous oxide delivery sy... | 08/01/2006 |
| 7066169 | Grilling surface for gas grill providing flame control and grease diversion A grilling surface, and a grease diverter, within a standard gas grill having a cover, base, and a gas burner. The grilling surface is formed of a series of integrally structured inverted and truncated pyramids, or cones, connected together, and having an aperture p... | 06/27/2006 |
| 6981865 | Catalyst combustion system, fuel reforming system, and fuel cell system A catalyst combustor (11) includes an inner catalyst combustion portion (20) connected to a substitute fuel supply line (LS21, 12, 16) and a substitute oxidizer supply line (LS22, 13), an outer catalyst combustion portion (40) conn... | 01/03/2006 |
| 6951637 | Method and device for producing globular grains of high-puroty silicon having a diameter of between 50 μm and 300 μm and use of the same The invention relates to a method and a device for producing globular grains of high-purity silicon by atomising a silicon melt (6) in an ultrasonic field (10). Globular grains having a grain size of 50 μm can be produced by means of said method and d... | 10/04/2005 |
| 6918757 | Combustion apparatus A combustion apparatus 2 has an anti-spreading member 65 disposed below a combustion chamber 10. This anti-spreading member 65 is composed of a generally cylindrical main body 65a, an outer flange 65b and an in... | 07/19/2005 |
| 6915778 | Throttle modulation device for combustion engine The present invention relates generally to combustion engines, and more specifically, to an apparatus for controlling the power of combustion engines which have electrically-modulated throttle systems (also known as drive-by-wire throttle systems). There many applic... | 07/12/2005 |
| 6908301 | Control for catalytic combustor A fuel injector (11) supplies liquid fuel to a catalytic combustor (9) of a fuel reforming device during startup of a fuel reforming device. A controller sets the injection amount (Qf) for liquid fuel to a first injection amount (Qf1) during a p... | 06/21/2005 |
| 6835062 | Fuel oil supply circuit for an oil burner having a solenoid valve in parallel circuit with diaphragm valve for controlling oil flow at start up A fuel oil supply circuit that includes two bypass mechanisms for burner startup including an electrical valve bypass in parallel circuit with a mechanical valve bypass. The fuel oil supply circuit includes an oil pump that is adapted to pressurize fuel oil and a do... | 12/28/2004 |
| 6786225 | Three-stage relay control A three-stage relay control is provided for regulating the flow of gas through, for example, gas valves. The relay control includes a control arm for providing three levels of gas flow and having three adjustment screws, one for controlling the flow at each stage of... | 09/07/2004 |
| 6652265 | Burner apparatus and method A burner apparatus is operated in a plurality of distinct modes. In a startup mode, flows of oxidant and primary fuel are ignited by an igniter and are provided simultaneously with a flow of secondary fuel until a process chamber reaches the auto-ignition... | 11/25/2003 |
| 6604938 | Device for gas burners The invention relates to a device for gas burners, comprising at least two air nozzles 10, 11 for combustion air. The air nozzles 10, 11 are arranged in parallel. According to the invention, a flow restrictor 15 is assigned to one or more of the air nozzl... | 08/12/2003 |
| 6595199 | Stove for solid fuel A stove for solid fuel, with sensor controlled, motor driven adjustment means for respective different types of intake air and with a control unit which is programmable for selective control of the adjustment means in order to optimise the combustion unde... | 07/22/2003 |
| 6488495 | Lantern with improved choke A gas operated lantern includes a control mechanism whereby a user may start gas flow through the lantern, operate a choke, and ignite the lantern. The user may perform these operations using the same control in an easy, simple series of motions. The user... | 12/03/2002 |
| 6478574 | Pump purge for oil primary An oil burner control system is disclosed in which an extended time may be temporarily selected, in situations such as initial set up or periodic maintenance, for priming the pipes, filters and pumps, before a safety lockout of system operation occurs, wh... | 11/12/2002 |
| 6206687 | High turndown modulating gas burner A gas burner and method of controlling burning, the gas burner including a controller disposed in a control cabinet, a burner cabinet, an actuator and a blower, the blower being fluidly coupled to the burner cabinet. The gas burner has an air valve that i... | 03/27/2001 |
| 6077068 | Pulsated combustion apparatus and a method for controlling such a pulsated combustion apparatus A direct ignition type pulsated combustion apparatus including a burner provided in a combustion furnace, a combustion air line connected to the burner for feeding combustion air to the burner, a fuel gas line connected to the burner for feeding a fuel ga... | 06/20/2000 |
| 6048198 | Catalytic combustion type heater A catalytic combustion type heater set so as to reduce the exhaust emission at the time of ignition and the time of extinguishment by, at the time of ignition, providing a precombustion period and making the amounts of the fuel and air fed larger than the... | 04/11/2000 |
| 6009840 | Method for operating a boiler plant When a boiler plant (100), which is equipped with an air plenum (104), is in operation, during the startup phase the admission pressure in this air plenum (104) is lowered in terms of time and amount via a blowoff device (106) with respect to combustion a... | 01/04/2000 |
| 5938425 | Method and device for control of the flame size of gas-fired cooking or baking appliances A device and a method for the controlled reduction of the gas flow Q fed to a burner nozzle of a gas-fired cooking or baking appliance via a gas supply pipe. The gas supply pipe is branched into a number n of partial gas pipes connected in parallel, throu... | 08/17/1999 |
| 5749327 | Method for controlling gas supply of a gas boiler A method for gas supply pressure control is disclosed. Gas is supplied to a gas burner at a gas supply pressure which is higher than an ignition pressure, and after the ignition of the gas burner, the gas supply pressure increases during a predetermined t... | 05/12/1998 |
| 5716203 | Injection apparatus for an atmospheric burner in a gas heating apparatus, especially of the infrared type, and heating apparatus provided with such an injection device The invention relates to an injection device for burner heating apparatus provided with an air/gas mixture conduit including a Venturi element. This injection device comprises an injector holding tube (14), secured to a valve body (15) divided internally ... | 02/10/1998 |
| 5685707 | Integrated burner assembly An integrated burner system is disclosed having a fuel supply assembly including a fuel control for variably limiting the flow of fuel into the burner along with a discrete air control for generating a variable flow of air into the burner. The respective ... | 11/11/1997 |
| 5379752 | Low speed interlock for a two stage two speed furnace A two-stage induced draft furnace is operated at either high heat or low heat with the gas valve switched to high-fire or low-fire. High-fire and low-fire combustion pressure switches sense the collector box flue gas pressure and actuate respective soleno... | 01/10/1995 |
| 5240405 | Waste oil heater system An improved system to control the flame, efficiency and flow rate in a waste oil feed system and burner. The system controller comprises a positive displacement waste oil pump, a variable speed motor connected to and driving said pump, and a motor speed c... | 08/31/1993 |
| 5207569 | Method for adjusting a burner during the start-up phase in a furnace operated by means of flue gas recirculation A method for adjusting a burner during the start-up phase in a furnace operated with recirculated flue gas (3), the furnace is subjected to a pre-flushing period prior to start-up. The furnace is started with a constant fuel amount (5), the fresh air (2) ... | 05/04/1993 |
| 5149265 | Method for firing direct-fired burner A method for providing uniform temperature in a furnace, such as a soaking pit or a reheat furnace is disclosed. Temperatures at a front wall and a burner wall within the heating chamber are constantly monitored by a computer, and the computer operates a ... | 09/22/1992 |
| 5046943 | Air throttle control for a two-stage blower burner A blower burner capable of operating in two burner steps comprises a drive for an air throttle capable of running in a first direction from closed to open and in a second direction from open to closed, an auxiliary switch connected to the drive of the air... | 09/10/1991 |
| 5024209 | Gas cooking appliance with at least one radiant gas burner arranged underneath a glass ceramic plate, as well as process for reducing the heating-up time of such a gas cooking appliance In order to accelerate the heating of a burner plate of a cooking appliance with a glass ceramic cooking surface and a radiant gas burner, the radiant gas burner is operated during the heating-up phase with an increased quantity of gas. The gas quantity i... | 06/18/1991 |
| 4982721 | Restricted intake compensation method for a two stage furnace The present invention discloses a method of compensating for a restricted intake in a two stage furnace. The furnace includes low and high pressure switches for determining if sufficient air is present to support low and high combustion. When the furnace ... | 01/08/1991 |
| 4944098 | High velocity running web dryer having hot air supply means A high velocity web dryer which has a series of upper and lower air bars for floatingly suspending a running web as the web moves through the dryer. A hot air supplying system provides hot air to the bars for drying the web. The system includes a gas fire... | 07/31/1990 |
| 4887767 | Limit switch control method for a two-stage furnace A two-stage gas furnace control system automatically shifts into a high fire only mode if, in two consecutive low fire heating cycles a limit switch is tripped to indicate that a gas valve is stuck in a high fire condition. In this way, continued operatio... | 12/19/1989 |
| 4875851 | Steady state fuel burner assembly for a heat exchanger and method of operating same An improved steady state fuel burner assembly and method of operation for a space heater wherein fuel and combustion air are initially ignited within a burner assembly with the resulting higher pressure in the burner assembly causing throttling of combust... | 10/24/1989 |
| 4850530 | Gas valve using modular construction A gas valve for controlling the flow of a combustible, gaseous fuel to a burner employs a modular construction and is configurable to be fast or slow opening, to be step opening or to provide two firing rates in accordance with external signals applied th... | 07/25/1989 |
| 4802334 | Augmentor fuel system An optical sensor (40) located in the manifold area (20) of an augmentor senses the presence of liquid. The engine control provides a high fuel flow rate from remotely located augmentor fuel control (58) until liquid is sensed. Flow is then reduced to the... | 02/07/1989 |
| 4747771 | Operation of a pulse-fired burner A pulse-fired burner is operated by modulating a fuel supply rate between a pilot level and a main level to provide a flame the level of which modulates respectively between a pilot level during a non-firing phase and a main flame level during a firing ph... | 05/31/1988 |
