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Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 7204688 | Gas burner for dryer Gas burner for a dryer including a gas nozzle for receiving, and injecting gas, a mixing tube for mixing the gas injected from the gas nozzle and primary air, igniter fitted to an outlet of the mixing tube for igniting the gas mixed with the primary air coming out o... | 04/17/2007 |
| 7118613 | Method and apparatus for cooling the components of a control unit of an emission abatement assembly A control unit for controlling operation of a fuel-fired burner includes a housing having an air inlet which is open to an interior chamber of the housing. An air pump is positioned in the interior chamber of the housing and has an air inlet which is open to the int... | 10/10/2006 |
| 7025810 | Method and apparatus for shutting down a fuel-fired burner of an emission abatement assembly A method of operating a fuel-fired burner of an emission abatement assembly includes supplying a reduced amount of fuel to the fuel-fired burner in response to detection of a burner shutdown request. Such a reduced fuel supply continues for a predetermined time peri... | 04/11/2006 |
| 7018200 | Combustion detection device with a thermoelectric generator The apparatus (1,1′) for the detection of gas combustion in an domestic gas heater or a water heater is designed as an independent installation unit mounted on a shared support bracket (8,8′), provided with a thermoelectric generator assembly (4... | 03/28/2006 |
| 6964248 | Fuel-fired heating appliance with temperature-based fuel shutoff system A gas-fired water heater is provided with a combustion shutoff system which precludes further combustion within the water heater's combustion chamber in response to a combustion temperature therein reaching a predetermined level correlated to and indicative of a pre... | 11/15/2005 |
| 6957628 | Fuel-fired heating appliance with temperature-based fuel shutoff system A gas-fired water heater is provided with a combustion shutoff system which precludes further combustion within the water heater's combustion chamber in response to a combustion temperature therein reaching a predetermined level correlated to and indicative of a pre... | 10/25/2005 |
| 6948929 | Combustion type waste gas treatment system A combustion type waste gas treatment system is capable of oxidatively decomposing a hazardous combustible waste gas while heating efficiently with a structure which allows the waste gas to mix with an auxiliary burning gas efficiently without the occurrence of back... | 09/27/2005 |
| 6893253 | Fuel-fired heating appliance with temperature-based fuel shutoff system A gas-fired water heater is provided with a combustion shutoff system which precludes further combustion within the water heater's combustion chamber in response to a combustion temperature therein reaching a predetermined level correlated to and indicative of a pre... | 05/17/2005 |
| 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 |
| 6776125 | Methods of operating a fuel-fired heating apparatus A gas-fired water heater has a combustion chamber with a bottom wall defined by a perforated flame arrestor plate forming a portion of a flow path through which combustion air may be supplied to a burner structure within the combustion chamber. During firing of the ... | 08/17/2004 |
| 6769907 | Open fire display apparatus with thermal expansion feature A fire display apparatus comprises a structural base plate supported in a horizontal attitude within a clay, or other fire resistant bowl. The base plate supports an annular burner tube on a outer, upwardly facing surface, the burner tube providing outwardly directe... | 08/03/2004 |
| 6766820 | Field adjustable pilot guard An improved pilot guard for controlling the flow of gaseous fuel to both a pilot burner and a main burner, the pilot valve comprising a housing having an inlet port, a pilot port and a main burner port; a bore extending through the housing between the pilot port and... | 07/27/2004 |
| 6766771 | Fuel-fired water heater with dual function combustion cutoff switch in its draft structure A fuel-fired power vented heating appliance, representatively a water heater, has, in its draft structure, a single thermal or other type of cutoff switch which serves the dual function of preventing (1) the creation of an unacceptably high level of carbon monoxide ... | 07/27/2004 |
| 6743012 | Heater apparatus for a motor vehicle A heating apparatus for a motor vehicle including a heat exchanger having a wall for separating a heated exhaust gas from a heat exchange medium, a conveyor mechanism for conveying the heat exchange medium along the wall, and a protective mechanism for protecting th... | 06/01/2004 |
| 6540504 | Combustion appliance with flame blocking device A main burner 22, a pilot burner 25, and a lead-in pipe 29 supplying combustion exhaust to the pilot burner 25 are arranged in a combustion chamber R2. A flame arrester 27 with small holes 27a is provided at a bottom plate 13. Furthermore, a primary therm... | 04/01/2003 |
| 6164958 | Safety system for gas range 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 ... | 12/26/2000 |
| 6139311 | Pilot burner apparatus and method for operating An apparatus and method for operating a pilot burner apparatus and a main burner apparatus of a gas-fired appliance. The pilot burner apparatus draws combustion air from a first environment. The main combustion apparatus draws air from a second environmen... | 10/31/2000 |
| 6129542 | Dual mode pilot burner A dual mode pilot burner having a control flame mode of operation and a pilot flame mode of operation, which dual mode pilot burner is suitable for controlling the fuel/air ratio of a main burner when operating in the control flame mode of operation. The ... | 10/10/2000 |
| 5997278 | Apparatus for providing an air/fuel mixture to a fully premixed burner Apparatus provides an air/fuel mixture to a fully premixed burner and comprises means for providing fuel at a variable flow rate to the burner, means for supplying air at a variable flow rate to the fuel to form the mixture, means for sensing aeration of ... | 12/07/1999 |
| 5722822 | Flame sensor verification Method and apparatus are disclosed for checking the responsiveness of a circuit which senses the presence of a flame produced by a burner within a furnace. A programmed processor associated with the circuit measures the time the circuit takes to indicate ... | 03/03/1998 |
| 5645411 | Radiation gas burner with safety device A gas radiation burner has a burner plate, and a safety element providing an ignition safety for non-burnt discharging gas for igniting gas or interrupting a gas supply. The safety element is formed as a temperature measuring resistance which contacts the... | 07/08/1997 |
| 5575274 | Gas log fireplace system A gas-fired, simulated log fireplace insert incorporating an automatic flue damper for controlling the operational state of a chimney vent (open/closed) in response to gas combustion, an externally mounted carbon monoxide detector for terminating or inhib... | 11/19/1996 |
| 5455390 | Microelectronics unit mounting with multiple lead bonding A component for mounting semiconductor chips or other microelectronic units includes a flexible top sheet with an array of terminals on it, and with flexible leads extending downwardly from the terminals. A compliant dielectric support layer surrounds the... | 10/03/1995 |
| 5295818 | Control unit for burner assembly A control system controls a combustion burner. The system has an ignition electrode to create a flame in a burner, and a first temperature sensor to sense the temperature of the flame. A control terminates the operation of the ignition electrode when a pr... | 03/22/1994 |
| 5139413 | Pilot burner safety device with methods of ambient air flow regulation into a flame nozzle A pilot burner safety device of a gas combustion apparatus for shutting down a gas supply valve automatically at poor oxygen condition, includes an air intaking air means for intaking into a gas supplying passage, a heat detecting means mounted adjacent t... | 08/18/1992 |
| 5080578 | Liquid fuel burning heater having flame stopping means An apparatus for extinguishing undesired flames in liquid fuel-burning heaters having a wick partially disposed in a fuel supply reservoir in fluid communication with a fuel tank said apparatus comprising fuel flow cut-off means for interrupting said flui... | 01/14/1992 |
| 4993401 | Control system for glass-top cooking unit A cooking unit has a ceramic cooking surface, a gas burner underneath the surface, a gas supply including a solenoid valve for feeding a combustible gas to the burner, and an electric igniter juxtaposed with the burner and electrically energizable to igni... | 02/19/1991 |
| 4624632 | Flame failure device A flame failure device for a gas-fired appliance has a heat sensitive device (24') in the form of fine bore tube (25). The tube is connected to one chamber (10) of a pressure sensitive gas flow control valve assembly. The chamber is pressurized and the ra... | 11/25/1986 |
| 4591332 | Control device of a combustion apparatus The feature of the present invention is that in the control device of the combustion apparatus, comprising an operational amplifier which compares a capacitor voltage charged by a flame rod current, with a reference voltage, thereby to issue an unusual si... | 05/27/1986 |
| 4460328 | Process and apparatus for utilizing waste oil A heating system comprising the combination of storage vessels (10, 12) for conventional heating oil and waste oil, respectively, and in which the two storage vessels (10, 12) are effectively sealed apart, one from the other. At the initial stage of heati... | 07/17/1984 |
| 4457692 | Dual firing rate flame sensing system A flame rod inserted in a flame created by the secondary air supplied to a burner is used to generate a flame signal voltage. This flame signal voltage fluctuates with the amount of secondary air available and with the fuel supplied. These fluctuations ar... | 07/03/1984 |
| 4389184 | Combustion control apparatus A combustion control apparatus which controls combustion in a combustor which is a heat source of a hot-water boiler or a hot-air heater includes a memory circuit which generates an alarm signal and also a signal for stopping the operation of the apparatu... | 06/21/1983 |
| 4355970 | Pressure responsive safety valve for gas burner A safety device for a gas burner comprises a first ignition nozzle 31 in a pilot burner 3, an inflammable gas guide tube 32 facing the first ignition nozzle, a second ignition nozzle 33 at the end of the guide tube oriented toward a main burner 2, a press... | 10/26/1982 |
| 4052136 | Marine stove safety controls A thermostat is arranged to be responsive to the temperature of flue gases from an oil burning heater and actuates switches when the temperature of the flue gases reaches either a predetermined high value or a predetermined low value. The switches are eff... | 10/04/1977 |
