Bizarre Patents
Behavior Modification Wristwatch
A wristwatch including a watch band and a watch body having an octagon shaped perimeter and being red in color and having the word STOP thereon to resemble a stop sign.
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| Number | Title | Issue Date |
| 7299769 | Condensing gas fired water heater A water heater is shown having a closed metal tank with an upwardly mounted combustion chamber and burner/blower assembly. Curved fire tubes convey the products of combustion from the chamber to an exterior mounted flue assembly. The closed tank is enclosed by a rot... | 11/27/2007 |
| 6951456 | Microcombustor and combustion-based thermoelectric microgenerator A generally toroidal counterflow heat exchanger is the main element of a combustor that operates at a micro scale. The combustor includes a central combustion region with openings to a reactant gas channel and an exhaust gas channel. The reactant channel and exhaust... | 10/04/2005 |
| 6718889 | Draft controlled boiler fuel nozzle A multi-fuel boiler having multiple, independent draft or combustion air sources and controls. A conventional oil/gas burner and nozzle assembly is fitted to an injector tube and isolated from a thermal transfer medium. A butterfly valve is supported in the injector... | 04/13/2004 |
| 5787846 | Variable flow volume control baffle for water heater Apparatus for improving the efficiency of a water heater having a tank, a burner and a flue, the flue being disposed within said tank for evacuation of burned combustion gases therethrough with resulting heating of water in the tank, generally including c... | 08/04/1998 |
| 5584269 | Engine block heater An engine block heater comprising a propane circulation heater in which engine coolant is heated in a jacket surrounding an inner chamber which is open at both ends to accommodate an industrial size portable propane torch. The jacket is inclined to the ho... | 12/17/1996 |
| 5579756 | Combination heater Heating apparatus for producing both central heat and tap water, specifically adapted for trailers and similar mobile houses with small spaces is provided. The heat source is a burner combusting LP-gas. Heat cartridges for electric heating optionally prov... | 12/03/1996 |
| 5429059 | Retrofitted coal-fired firetube boiler and method employed therewith A coal-fired firetube boiler and a method for converting a gas-fired firetube boiler to a coal-fired firetube boiler, the converted boiler including a plurality of combustion zones within the firetube and controlled stoichiometry within the combustion zon... | 07/04/1995 |
| 5385120 | Fluid heater A fluid heater or boiler is disclosed which has a fire tube or combustion chamber surrounded by a reservoir containing a fluid to be heated. The combustion chamber is defined by an inner shell and the reservoir is defined by an outer shell. The inner and ... | 01/31/1995 |
| 5313914 | Potable hot water storage vessel and direct-fired heat exchanger The inner surface of a hot water storage vessel is lined with a removable rigid plastic liner layer with injected foam insulation located between the liner and storage vessel. A heat exchanger is mounted through an integral first flange to a second flange... | 05/24/1994 |
| 5220888 | Cyclonic combustion A process for cyclonic combustion of fuel in a combustor comprising mixing the fuel and oxidant forming a fuel/oxidant mixture prior to injection into said combustor, tangentially injecting the fuel/oxidant mixture into a first combustor chamber, igniting... | 06/22/1993 |
| 5209187 | Low pollutant - emission, high efficiency cyclonic burner for firetube boilers and heaters A low pollutant emission, high efficiency cyclonic burner and cyclonic combustion process for firetube boilers and heaters in which the combustion air required for complete combustion is introduced into the cyclonic burner in stages. Fuel and primary comb... | 05/11/1993 |
| 5207212 | Submersible high-efficiency combustion chamber for a water heater An apparatus for heating water in a water tank includes a first tubular member and a second tubular member that has an input end and an exhaust end. The second tubular member is disposed at least in part within the first tubular member to form an annular ... | 05/04/1993 |
| 5029557 | Cyclone combustion apparatus A cyclone combustion apparatus includes a combustion chamber having a substantially cylindrical wall, a substantially cylindrical exit throat at the rear end of the combustion chamber, means for supplying fuel into the combustion chamber at a front end th... | 07/09/1991 |
| 5020479 | Watertube boiler and its method of combustion A watertube boiler for all types of boilers including natural circulation, forced circulation and one-through types. The boiler includes a plurality of heat absorption water tubes forming a heat absorption watertube unit in the furnace. The heat absorptio... | 06/04/1991 |
| 4989549 | Ultra-low NOx combustion apparatus A combustion apparatus for staged combustion inside the Morison tube of a firetube boiler for lowering the concentration of NOx in the exhaust gases. Combustion occurs in a first and second stage, the first stage being sub-stoichiometric combus... | 02/05/1991 |
| 4920925 | Boiler with cyclonic combustion A boiler with a cyclonic combustor includes a first chamber which is substantially uncooled and refractory lined, a second chamber in fluid communication with the first chamber, ducts for supplying air and fuel directly into the first chamber and for form... | 05/01/1990 |
| 4869208 | Compact modular fluid storage and heating system A modular fluid storage and heating system is provided which includes a plurality of different, interconnectable tank components of standardized dimensions such as fluid storage tanks, closure caps, and heater assemblies. Each of the tank components is su... | 09/26/1989 |
| 4860695 | Cyclone combustion apparatus A cyclone combustion apparatus includes a combustion chamber having a substantially cylindrical wall, a substantially cylindrical exit throat at the rear end of the combustion chamber, means for supplying partially preburned fuel into the combustion chamb... | 08/29/1989 |
| 4825813 | Multi-pipe once-through type boiler A multi-pipe once-through boiler having at least one row of a plurality of circumferentially arranged pipes on which a plurality of fins are arranged in such a manner that the fins are in contact with the flow of the combustion gas in a substantially para... | 05/02/1989 |
| 4790268 | Submersible chamber water heater A water heater having improved efficiency. The water heater includes a tubular member that is mounted in an opening in the side of the tank and extends generally horizontally across the tank. The tubular member defines a combustion chamber and a fuel burn... | 12/13/1988 |
| 4742800 | Submersible chamber water heater A water heater having improved efficiency. The water heater includes a tubular member that is mounted in an opening in the side of the tank and extends generally horizontally across the tank. The tubular member defines a combustion chamber and a fuel burn... | 05/10/1988 |
| 4730578 | Method for operating a heating boiler plant and apparatus suitable therefor A method for operating a heating plant having a boiler with a heat exchanger following the combustion chamber, such that it can be operated continuously and the exhaust gas temperature maintained at a predetermined value, in which a continuously controlla... | 03/15/1988 |
| 4714050 | Pre-heater An industrial oven, including the combination of a steam generating tank having a water inlet and a steam outlet; walls depending from said tank for defining a combustion chamber therebelow; a preheater associated with one of the said walls exteriorially ... | 12/22/1987 |
| 4714052 | Industrial gas operated liquid heater An industrial gas operated liquid heater is provided comprising a tubular hearth or furnace a front end face of which is provided with a gas burner and a heat exchanger in which the liquid to be heated and the combustion fumes flow concurrently, the excha... | 12/22/1987 |
| 4685425 | Submersible chamber water heater A water heater having improved efficiency. The water heater includes a tubular member that is mounted in an opening in the side of the tank and extends generally horizontally across the tank. The tubular member defines a combustion chamber and a fuel burn... | 08/11/1987 |
| 4671213 | Structural improvement in the burning chamber of a horizontal boiler The present disclosure is related to a structural improvement in the burning chamber of a horizontal boiler, adopting a hollow flame-conducting element therein, which is attached with a pair of parallelly spirally fixed heat-convecting fins for either inc... | 06/09/1987 |
| 4624218 | Heater, particularly an auxiliary vehicle heater A vehicle auxiliary heating device of the type which has a burner aggregate, a burner pipe forming a combustion chamber and a heat transfer arrangement that contains an inner jacket with ribs and an outer jacket is improved by having the outer jacket and ... | 11/25/1986 |
| 4590888 | Water heater A water heater having a burner unit and a combustion chamber from which the combustion gases are discharged and deflected into an annular out-flow space through which they flow along a heat exchanger to an exhaust outlet in the area of the burner unit. Th... | 05/27/1986 |
| 4584969 | Dirty water heat exchanger A dirty water heat exchanger keeps solids from settling out while passing through the heat exchanger and includes a cylindrical furnace duct, connected at a first end to a conventional burner, having a spiral liquid heating duct along which the dirty wate... | 04/29/1986 |
| 4488514 | Solid fuel boiler of the radiating furnace tube type, method for converting a boiler and means for carrying out said method The boiler comprises a primary furnace in which the combustion reactions are initiated, a secondary furnace extended by a radiating tube in which the combustion reactions are terminated, a heating surface disposed around the radiating tube and means for c... | 12/18/1984 |
| 4473351 | Vertical feed stick wood fuel burning furnace system A new and improved stove or furnace for efficient combustion of wood fuel including a vertical feed combustion chamber for receiving and supporting wood fuel in a vertical attitude or stack, a major upper portion of the combustion chamber column comprisin... | 09/25/1984 |
| 4453498 | Gas- or oil-burning warm water, hot water or steam boiler The invention relates to gas-, or oil-burning warm water, hot water or steam boilers, mainly for the supply of households, communal institutions, and industrial plants, the surfaces of which surrounding the furnace are formed as membrane walls having annu... | 06/12/1984 |
| 4433645 | Heat exchanger A heat exchanger includes elongated inner and outer tubular members defining an elongated generally annular passage therebetween. A burner mounted adjacent one end of the tubular members discharges hot gases into the inner tubular member for axial flow th... | 02/28/1984 |
| 4421065 | Heating equipment for an installation using steam and heated gas Heating equipment for supplying steam and heated gas, including a combustion chamber from which come flue gases which flow through an enclosure, heating on the way at least one bundle of tubes in which water flows and gives off steam, and which further in... | 12/20/1983 |
| 4418649 | Boiler structure A boiler comprising a long tank lying on its side and having a fire box at one end which is adjacent to a recessed bulkhead that is spaced from a partition in the end of the tank. The top of the tank and two sides thereof extend beyond the bulkhead around... | 12/06/1983 |
| 4412509 | Energy conversion system and components thereof The energy conversion system disclosed is especially adapted for use with hydrocarbon or fossil fuels, for instance natural gas, with which substantial quantities of water vapor are developed when the fuel is burned, for instance in an engine, such as a t... | 11/01/1983 |
| 4409926 | Horizontal sheel boiler A horizontal shell boiler has a horizontal furnace section which communicates with a flue gas transfer section at its end which transfers the flue gases from the furnace section to flue tubes extending horizontally through the space between the furnace se... | 10/18/1983 |
| 4407353 | Waste heat recovery device for preventing corrosion by sulfur oxides In a boiler or an industrial furnace, a temperature detecting sensor is mounted at the heat absorbing side of a heat pipe of a waste heat recovery device which is disposed in part of the path of exhaust gas. With an output signal of the temperature detect... | 10/04/1983 |
| 4377133 | Cryogenic heater An apparatus for heating a confined liquid medium having a closed vessel with a heat transfer liquid therein, a burner housing within the vessel submerged in the heat transfer liquid, a burner having a fuel inlet and combustion air inlet, the burner havin... | 03/22/1983 |
| 4327672 | Fuel burning boiler A fuel burning boiler comprises a water holding shell of sheet steel having front and rear walls defining axially aligned openings. An insert body passes through the openings and is affixed thereto, the water being held between the shell and insert body. ... | 05/04/1982 |
