William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7372696 | Cooling device and method for electronic apparatus The present invention relates to a cooling device for an electronic apparatus comprising: a cooling element to be connected to an electronic component for receiving the heat load generated by the electronic component, an inlet port, an outlet port and a fan for brin... | 05/13/2008 |
| 7341007 | Balancing damper An apparatus for use in a furnace system to facilitate efficient and complete combustion of coal streams in a carrier gas. The apparatus, capable of being positioned horizontally or vertically in the coal pipes between the grinding mills and the furnace burner, cont... | 03/11/2008 |
| 7017501 | Riffle distributor assembly for a fossil fuel fired combustion arrangement A riffle distributor assembly for influencing the travel properties of a material feed stream 42 moving between a pulverizer 14 and a furnace 12 is part of a feed path 36 having one duct 44A having a branch entry 66A and ano... | 03/28/2006 |
| 7013815 | Adjustable air foils for balancing pulverized coal flow at a coal pipe splitter junction An adjustable device installed at the inlet of conventional junctions/splitters (116) for on-line control of the distribution of coal among the outlet pipes is herein disclosed. The device includes a plurality of wake inducing airfoils (60) each positi... | 03/21/2006 |
| 6988452 | Tower distributor assembly A furnace system for solid fuel includes a tower distributor for addressing flow imbalance in a heterogeneous stream. The tower distributor comprises four sections: an inlet section, a mixer section, a recovery section and an outlet section. Illustratively, the inle... | 01/24/2006 |
| 6976440 | Fuel distribution device for fuel feed ducts and method of operating distribution device A fuel supply duct, which supplies a mixed fluid of a solid fuel and carrier gas to one or more burners provided on the walls of a furnace, is provided with a branching part, and each of a plurality of branch ducts, which branch out from the branching part, is conne... | 12/20/2005 |
| 6899041 | Multi-spin mixer for particulate coal supply conduit A mixer having two or more concentric cylindrical flow channels is placed in a supply conduit for a combustion chamber to mix airborne particulate coal prior to entering a manifold supplying four parallel branch conduits. Vanes are mounted in the mixer channels for ... | 05/31/2005 |
| 6840183 | Diffuser insert for coal fired burners A diffuser for a pulverized coal delivery pipe near an elbow connection to a burner nozzle. A diffuser structure is located in the pipe adjacent the elbow outlet, with both radial and axial diffuser elements for diffusing radial and axial components of coal concentr... | 01/11/2005 |
| 6799525 | Automatic coal damper Apparatus for controlling primary air flow and pulverized coal flow to a plurality of burners in a coal-fired boiler includes a plurality of coal dampers arranged to supply a mixture of air and pulverized coal to respective burners in the coal-fired boiler, each dam... | 10/05/2004 |
| 6789488 | Adjustable flow control elements for balancing pulverized coal flow at coal pipe splitter junctions An adjustable device installed at the inlet of conventional junctions/splitters (116) for on-line control of the distribution of coal among the outlet pipes is herein disclosed. The device includes a plurality of flow control elements (60) each positio... | 09/14/2004 |
| 6615749 | System for destroying documents The invention relates to a system for completely destroying documents having been shredded by document shredders, wherein the system comprises: collecting means for shredded documents, burning means being arranged together with collecting means, and the... | 09/09/2003 |
| 6293208 | Method of installation of supply of air of solid and pulverized fuel burner In a method of supplying air to a pulverized solid fuel burner passing through the burner cowl of a furnace, the fuel is dried and then conveyed by means of a given large quantity of hot air, which may or may not be depleted in oxygen in a separator in wh... | 09/25/2001 |
| 6260490 | Burner isolation valve for pulverized fuel systems A burner isolation valve or gate for use in the coal-delivery pipes of coal-fired power plants. Safety regulations often require that two valves be placed in the coal delivery line between a combustion chamber and an exhauster or pulverizer type deliver s... | 07/17/2001 |
| 6234090 | Linear diffuser for balancing coal flow In a delivery pipe for pulverized coal fines from a coal mill to a combustion chamber, a device for diffusing unevenly distributed coal flow evenly across the pipe. In a first form, the invention comprises a plurality of static, lateral, linear diffuser e... | 05/22/2001 |
| 6202572 | Exhauster for a solid fuel pulverizing and firing system having an improved fan assembly An exhauster is provided having an improved fan assembly for exhausting coal through an exhauster fan housing, the exhauster fan assembly being mountable within the housing on a shaft for rotation about a shaft rotational axis. The housing has an inlet ge... | 03/20/2001 |
| 6186079 | Linear diffuser for balancing coal flow In a delivery pipe for pulverized coal fines from a coal mill to a combustion chamber, a device for diffusing unevenly distributed coal flow evenly across the pipe. In a first form, the invention comprises a plurality of static, lateral, linear diffuser e... | 02/13/2001 |
| 6085672 | Apparatus for blowing synthetic resin into furnace An apparatus for blowing synthetic resin into a furnace including a first processing line for processing film-shaped synthetic resins into a granular synthetic resin material; a second processing line for processing non-film-shaped synthetic resins into a... | 07/11/2000 |
| 6079974 | Combustion chamber to accommodate a split-stream of recycled gases A combustion chamber is provided that has a vertically oriented body with an inner surface defining an inner combustion area. A burner is disposed adjacent one end of the body so that the flame of the burner when lit will extend into the combustion area. ... | 06/27/2000 |
| 6055914 | Pre-riffle box mixing device for coal-fired power plant In a coal-fired power plant having an exhauster fan for delivering coal/air flow through a discharge chute to a combustion chamber and further having a riffle box in the discharge chute, a mixing device located in the discharge chute between the exhauster... | 05/02/2000 |
| 5913273 | Incinerator including vibrator and incinerator including drying chamber A waste incinerator including separate burning-, blower-, chimney- and ash-receiving chambers. A suction-discharge port is provided in a wall between the burning chamber and the chimney chamber for discharging gases from the burning chamber through a chim... | 06/22/1999 |
| 5794548 | Pneumatic bark distributor for continuous ash discharge stokers A furnace having a continuous ash discharge stoker which includes a fuel distributor apparatus for delivering associated particulate fuel to an associated continuous ash discharge furnace which includes a housing having an inlet for a particulate fuel and... | 08/18/1998 |
| 5685240 | Variable orifice plate for coal pipes A flow control apparatus for a coal pipe containing a stream of primary combustion air carrying pulverized solid fuel particles, includes a frame sealingly secured to an outside surface of the coal pipe around a window opening formed on one side of the pi... | 11/11/1997 |
| 5645381 | Variable-split blowdown coal feed system A variable-split blowdown coal feed system supplies two streams of air entrained pulverized coal in a uniform, well-metered steady state manner. Splitter dampers control a split of a coal and air mixture into two streams which are fed to respective cyclon... | 07/08/1997 |
| 5555823 | Method and apparatus for feeding waste material to a dry kiln A method and apparatus for receiving, processing, and delivering waste materials to the interior of a rotary cement kiln to be burned therein. Apparatus includes a feeding mechanism which provides continuous in-feed of entrained solids or solid waste, mat... | 09/17/1996 |
| 5463967 | Static mixer device for improving homogeneity of a characteristic of a mixture stream created from fluid streams separately entering the device A static mixer device for mixing separate fluid streams entering the device in order to achieve a more uniform, or homogeneous, characteristic, such as temperature for example, in the resulting fluid mixture stream exiting the device. An exemplary embodim... | 11/07/1995 |
| 5239935 | Oscillating damper and air-swept distributor An oscillating damper and air-swept distributor is disclosed for controllably introducing solid fuel into a furnace. The oscillating damper having an oscillating valve member, which oscillates between a first adjustable position and second adjustable posi... | 08/31/1993 |
| 5095825 | Method and apparatus for feeding fuel into a pressurized space A method and apparatus for feeding solid material into a pressurized combustion or gasification plant in stages. The feed apparatus (10) is provided with an inlet (18), sluice chamber (30), and outlet (20). In a loading stage, solid material is conveyed t... | 03/17/1992 |
| 4903901 | Pulverized coal flow controller An apparatus and method for supplying a controlled flow of fluid transported solid particles, in particular, pulverized coal by the controlled injection of a fluid, such as a gas like compressed air, into at least one feed pipe. The flow of coal in feed p... | 02/27/1990 |
| 4790692 | Arrangement for transporting disintegrated particulate solids The invention relates to an arrangement for transporting disintegrated solid particles, in which the particles are transported by a quantity of air placed under an over pressure. The weight ratio of the particle/aix mixture lies within a range at which pa... | 12/13/1988 |
| 4750437 | Method for disposal of waste materials by incineration A method for disposing of waste materials including wastes generated by residential neighborhoods and business districts of a municipal area, by collecting waste materials centrally, sorting out and removing non-combustible materials from the collected wa... | 06/14/1988 |
| 4702182 | Process and apparatus for the injection by pneumatic means of metered amounts of pulverulent materials into a vessel which is under variable pressure A pneumatic mixture which has a relatively high content of pulverulent materials in the propulsion air is formed in a single metering means. This mixture is propelled through a common primary pipe to a distribution head in which the mixture is divided int... | 10/27/1987 |
| 4655147 | Plant for the combustion of particulate fuel in a fluidized bed A plant for combustion of a particulate fuel in a fluidized bed in a combustion chamber has the fuel supplied into the bottom of the combustion chamber by means of a pneumatic transportation system via nozzles. Fuel for the plurality of nozzles is transpo... | 04/07/1987 |
| 4619209 | Furnace construction A furnace which includes a furnace chamber and a fire pot within the chamber for burning solid fuel fed into the fire pot. The fuel is introduced to the fire pot by traveling through a feed tube which extends into the furnace chamber. An air flow is produ... | 10/28/1986 |
| 4582454 | Apparatus and method for feeding pulverized coal into an air line to a blast furnace Pulverized coal feed tanks are emptied in sequence via a transport line into the hot blast of a blast furnace. Each tank is carried by three load cells whose outputs are summed and differentiated to obtain the actual feed rate. Gas pressure in the tank is... | 04/15/1986 |
| 4570552 | Process and apparatus for delivering carbon material to a furnace A process and apparatus for delivering carbon i.e., coal dust, to be combusted in a furnace is presented. The furnace is of the type having plural combustion points and may include a shaft furnace such as, for example, a blast or cupola furnace. The carbo... | 02/18/1986 |
| 4528917 | Solid fuel burner A solid fuel burner comprises a system which permits solid fuel to be injected into a burner chamber and intermixed in an air suspension. The burner includes a cast iron, stepped grate that is self-cleaning, and comprises a series of plates that are subst... | 07/16/1985 |
| 4488512 | Feedstock injection system for fluidized bed combustor A hydro-pressurized fluidized bed combustor having an uptanding shell and an entry at its bottom for admission of feedstock. The feedstock passes through a conduit surrounded by a heat exchanger. Inside the shell an entry conduit is outwardly flared in th... | 12/18/1984 |
| 4479442 | Venturi burner nozzle for pulverized coal A new and improved burner for pulverized coal comprises a tubular nozzle for containing a primary, flowing stream of coal/air mixture having an outlet for discharging the stream into a combustion zone of a furnace. A venturi is mounted in the nozzle havin... | 10/30/1984 |
| 4441434 | Apparatus for dispensing particulate matter An apparatus for dispensing and injecting solid fuel in particulate form into a combustion chamber (10) in measured quantities and at variable rates and intermittencies is described. The apparatus (30) is comprised of a fuel hopper (31), at least one circ... | 04/10/1984 |
| 4392438 | Coal transport system Coal energy is delivered from the mine to a distant point of use by a system involving the pulverization of the coal at the mine, and carrying it as a nonexplosive suspension in a pipeline or conduit, with high pressure coal gas which is made at the mine ... | 07/12/1983 |