Patents Examined by Susanne C. Tinker
  • Patent number: 5799596
    Abstract: A furnace comprises an enclosure, a hearth plate within the enclosure for supporting combustible material, a first heater element adjacent the hearth plate for initial combustion of the combustible material, a filter disposed above the hearth plate for filtering uncombusted products of combustion of the combustible material, and a second heater element adjacent the filter for final combustion of the uncombusted products of combustion filtered by the filter. A controller controls the first and second heater elements independently.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: September 1, 1998
    Assignee: Barnstead/Thermolyne Corporation
    Inventor: Steven C. Peake
  • Patent number: 5799504
    Abstract: A vapor compression refrigeration system having a condenser, a regulating device, and a capillary tube. The regulating device has a housing defining an inner chamber for receiving refrigerant from the condenser. A float is disposed within the chamber and includes a resilient surface. An outlet line connected to the capillary tube extends through a bottom wall of the housing and into the chamber. The float is movable in response to changes in level of refrigerant in the chamber. The float moves downward to close the outlet line when refrigerant in the chamber drops below a minimum level, and moves upward to open the outlet line when refrigerant in the chamber rises above the minimum level. A filter assembly for removing contaminants from the refrigerant is disposed within the chamber above the float.
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: September 1, 1998
    Assignee: White Consolidated Industries, Inc.
    Inventor: William G. Nelson
  • Patent number: 5799590
    Abstract: Incinerator apparatus includes a furnace and a chimney in communication with the furnace. Within the furnace, a pipe having a bore and extending upward from the bottom of the furnace is disposed. The pipe is in communication with atmospheric air at the lower end thereof and is provided with a plurality of air holes therein. The pipe also includes a top air hole at the top end thereof. The top air hole has a transverse cross-sectional area smaller than that of the bore of the pipe. External air is spontaneously introduced from the outside of the furnace and flows out through the top air hole. As air flows out of the top air hole, it is also uniformly distributed through the air holes into the furnace and garbage to be burned in said furnace.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: September 1, 1998
    Assignee: Sunny Industry Company, Limited
    Inventor: Takuya Noguchi
  • Patent number: 5799591
    Abstract: An incinerator for incinerating medical waste in which a self-contained unit including a hopper and a fire chamber are supported on a conveyor mechanism, the fire chamber being provided with an opening and a chute coupling the hopper and the fire chamber for supplying material placed into the hopper to the fire chamber; a scrubber tank is provided which includes a rotatable scrubber, a conveyor conduit and a vacuum pump including a suction mechanism to suck up ash from the fire chamber and convey it through the conveyor conduit to the scrubber tank, a water tank is juxtaposed to the scrubber tank, and the interiors of the water tank and the scrubber tank are coupled together for supplying water to the scrubber tank while the scrubber is rotated for condensing the ash into a slurry which drops to the bottom of the scrubber tank and thereby eliminate the ash content supplied to the scrubber, a pump coupled to the scrubber tank through an extraction conduit for extracting the slurry with the bottom of the scrubb
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: September 1, 1998
    Inventor: Berris M. Anderson
  • Patent number: 5799597
    Abstract: An incinerator and a process for the incineration of animal carcasses. The inner combustion chamber of the incinerator is lined with a high temperature fibrous insulation material and a stainless steel liner thereby permitting the temperature of the liner to become very hot during incineration. The animal carcass is deposited directly onto the stainless steel liner. Heat is then applied to the chamber, and the liner becomes red hot and radiates heat onto the carcass from all sides of the chamber. The burners are controlled by temperature responsive control devices to maintain the combustion chamber within a desired temperature range. In another embodiment, a stainless steel wall is disposed within the interior of the incinerator housing to form a combustion chamber and an afterburner chamber alongside the combustion chamber. The afterburner chamber includes a separate burner located near the bottom of the incinerator for heating the air as it enters the afterburner chamber.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: September 1, 1998
    Assignee: R & K Incinerator, Inc.
    Inventor: Mark A. Kaehr
  • Patent number: 5797336
    Abstract: Waste is burnt in a furnace chamber (1). The oxygen-containing flue gases resulting in this process are introduced into a fluidized bed in an afterburning chamber (5) and reburnt. Solids discharged with the flue gases from the afterburning chamber (5) are separated from the flue gases in a dust separator (9) and recycled to the afterburning chamber (5), so that a circulating fluidized bed is formed, which produces a very homogeneous temperature distribution in the afterburning chamber (5) and at the same time permits highly efficient cooling of the flue gases. A secondary oxygen feed for the afterburning is dispensed with, which enables a decrease in size both of the afterburning chamber (5) and also of the downstream heat-recovery and gas cleaning devices and improvement in efficiency resulting therefrom.
    Type: Grant
    Filed: October 24, 1996
    Date of Patent: August 25, 1998
    Assignee: Von Roll Umwelttechnik AG
    Inventors: Patrick Muller, Hans Ruegg
  • Patent number: 5797332
    Abstract: A system for reducing volatile organic compounds, particulates and carbon monoxide in exhaust from a wood products dryer is disclosed. The dryer exhaust is combined with waste wood or biomass fuel and partially combusted in a rotary gasifier, then fully combusted in a secondary combustion chamber. Hot flue gasses form the secondary combustion chamber are used to heat the conduits carrying the exhaust from the dryer, to heat oil, and to preheat air input to the dryer.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: August 25, 1998
    Assignee: Callidus Technologies, Inc.
    Inventors: Michael R. Keller, John R. Petersen, David Caffey
  • Patent number: 5797333
    Abstract: An improved augering device and an accessible ash and pellet fines collection drawer which function together as a unique combination to remove pellet fines from a wood pellet burning stove, wherein the augering device has a screw mounted in a barrel formed by a tubular wall which also provides the pellet outlet to the firebox. Sieving apertures are formed through the tubular wall and are of a size particularly suited for the sieving of fines from the pellet fuel. The ash and fines collection drawer is adapted for positioning below the apertures in a non-fired portion of the stove, and an access opening is provided through a wall portion of the stove for insertion and removal of the drawer with respect to the stove.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: August 25, 1998
    Inventor: Carroll G. Hensley
  • Patent number: 5791268
    Abstract: An improved method and system for cooling the sulfur dioxide gas stream flowing from a sulfur furnace to a catalytic converter in a sulfur trioxide flue gas conditioning system. Water is injected into the sulfur dioxide gas stream upstream of the catalytic converter as appropriate to maintain the temperature at the inlet of the catalytic converter at a desired level.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: August 11, 1998
    Inventors: Richard L. Battles, Michael J. Lentz, Robert A. Wright
  • Patent number: 5784974
    Abstract: A feeder system for measuring and controlling the massed feed rate of particulate fuel material, such as coal particles, made up of a group of volumetric feeders and a gravimetric feeder coupled to the group of volumetric feeders. The system controls the fuel feed rate of the volumetric feeders based upon data communicated from the gravimetric feeder.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: July 28, 1998
    Assignee: General Signal Corporation
    Inventor: Kenneth J. Krauss
  • Patent number: 5782103
    Abstract: A control arrangement for the superheat temperature of at least one evaporator of a refrigeration system having a refrigerant circulation, in which at least one compressor, a condenser, an electronically controlled expansion valve and the evaporator are arranged in series, contains a measuring device connected to the evaporator, which device produces a measurement signal Tu that is a measure of the superheat temperature of the refrigerant in the evaporator, a comparator to which the measurement signal Tu and a desired superheat temperature signal Tu.sub.s are arranged to be supplied, and a PID controller arranged between the comparator and the expansion valve. For rapid compensation of changes in the superheat temperature, a control signal S proportional to the evaporation temperature T.sub.o of the refrigerant is arranged to be supplied additionally to the PID controller.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: July 21, 1998
    Assignee: Danfoss A/S
    Inventor: Frede Schmidt
  • Patent number: 5778694
    Abstract: A refrigerator includes a plurality of cold air inlet openings formed in a rear wall of the refrigerating compartment for directing cold air in respective directions into the refrigerating compartment. A motor-driven rotary damper is provided to control which of the inlet openings receives cold air, as well as the quantity of air introduced into the refrigerating chamber, and its direction of introduction. The cold air is supplied by a variable speed fan controlled so that in a first mode (cubic cooling) of cooling operation the amount of air supplied corresponds to the number of air inlet openings opened by the damper. In a second cooling mode (concentrated cooling), the damper is oriented to cause the air to be introduced into the refrigerating chamber in a specific direction where cooling is needed. In a third cooling mode (automatic swinging), the damper is oscillated while the cold air is being supplied.
    Type: Grant
    Filed: January 19, 1996
    Date of Patent: July 14, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Seong-Wook Jeong
  • Patent number: 5771822
    Abstract: The present invention describes a process for the disposal of residual substances from waste incineration plants as well as activated coke and/or activated carbon. For this purpose the residual substance as well as activated coke and/or activated carbon is introduced into the annular shaft (3) of the primary chamber (2) of the furnace (1). In the primary chamber (2) a temperature of C. to C. is set. The molten material flowing off leaves the primary chamber (2) together with the flue gases through the central outlet (4). The molten material is passed through the secondary chamber (5) and is discharged as slag.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: June 30, 1998
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventor: John Rizzon
  • Patent number: 5771820
    Abstract: A waste material, particularly refuse, is conveyed through a combustion chamber while simultaneously being mixed and is treated with a gaseous oxidizing agent. The combustion chamber comprises a rotary tubular furnace. The waste material is acted on by the gaseous oxidizing agent, with the volatile combustible constituents of the waste material forming flames with the oxidizing agent. The radiation heat of the flames frees additional volatile constituents of the waste material. The waste material freed of volatile constituents is obtained as refuse coke and the unburnt volatile constituents are obtained as combustible gas. The thermal treatment in the rotary tubular furnace can be continued beyond the freeing of volatile substances. Given an adequate temperature rise, the oxidic constituents of the slag formed are melted, and the latter can be obtained in the form of glass.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: June 30, 1998
    Assignee: Von Roll Umwelttechnik AG
    Inventor: Hans Ruegg
  • Patent number: 5771821
    Abstract: Technology for treating industrial and domestic waste which can be applied in the chemical industry as well as in the power generation sector as a way of using plastic and polymer waste. The method involves: melting down the plastic waste in an atomsphere of superheated steam and thermal destruction of the waste at a temperature of C. on a multi-layered inert material whose particles diminish in size, layer by layer in the direction of flow of the melt, from 3.83 to 0.12 mm; and the removal and condensation of the gaseous products.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: June 30, 1998
    Assignees: Science-Technical and Product-innovative Center "Tokema", Small State Enterprise "Ekores"
    Inventors: Gennady Ivanovich Zhuravsky, Valery Vladimirovich Mulyarchik, Vladimir Alexeevich Marchenko, Anatoly Vasilievich Kukharev, Leonid Mikhailovich Vinogradov, Anatoly Zhoresovich Grebenkov, Vladimir Nikolaevich Drozdov, Valery Grigorievich Konstantinov, Vitaly Ivanovich Stetsjurenko, Ivan Ivanovich Khomich, Valery Vladimirovich Chemetiev
  • Patent number: 5771818
    Abstract: A waste disposal device having a wall structure defining an incineration space, a torch assembly separate from the wall structure, and first structure cooperating between the torch assembly and wall structure for maintaining the torch assembly in an operative position on the wall structure. The torch assembly has a torch for generating heat in the incineration space with the torch assembly in the operative position. The torch assembly further has second structure for circulating a cooling liquid in heat exchange relationship with the torch assembly, independently of the wall structure, to thereby effect cooling of the torch assembly. In one form, the torch assembly is removably maintained in the operative position on the wall structure.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: June 30, 1998
    Assignee: Prometron Technics Co., Ltd.
    Inventors: Shuji Tada, Jun Aoki
  • Patent number: 5769010
    Abstract: A furnace includes a high temperature heating source located within the cavity of the furnace which incinerates undesired effluents produced during the normal thermal processing of material. The heating source comprises one or more hot wires disposed within apertured tubes, which are at a temperature above the ignition point of the undesired effluents. As the effluents pass into the tube through the apertures, they are incinerated, thereby producing an exhaust that is generally pollution free. Additionally, the heat used during the incinerating of the undesired effluents fully provides the heating requirements of the furnace for the thermal processing of material.
    Type: Grant
    Filed: February 1, 1996
    Date of Patent: June 23, 1998
    Assignee: BTU International, Inc.
    Inventor: Gary A. Orbeck
  • Patent number: 5769009
    Abstract: A hearth particle bed incineration furnace is used to remove dioxin contained in a combustion residue through the mixing of the hearth particle bed particles and the combustion residue at a temperature of at least C., preferably from C., for at least 30 minutes, preferably 30 minutes to 2 hours, through the adjustment of the rate of removal of the mixture. An incineration furnace is provided which can be compact and yet have a large capacity and a stable operation over a long period of time.
    Type: Grant
    Filed: July 17, 1995
    Date of Patent: June 23, 1998
    Inventor: Shigeru Saitoh
  • Patent number: 5769007
    Abstract: A heating chamber or low-temperature carbonization drum has an interior receiving bulk material or trash and has a longitudinal axis about which the heating chamber or drum is rotatable. A number of heating tubes through which a heating gas can flow in a given direction, are disposed in the interior of the heating chamber or drum, are oriented approximately parallel to one another, and have an end region as seen in the given flow direction. Turbulators are disposed inside the heating tubes in the end region.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: June 23, 1998
    Assignee: Siemens Aktiengesellschaft
    Inventors: Herbert Tratz, Helmut Werdinig, Joachim Boretzky, Anton Ebert
  • Patent number: 5765489
    Abstract: A process for the treatment of solid residue from a refuse incineration plant, involving:melting the solid residue in a first heating chamber under oxidizing conditions to provide a melt;reducing any heavy metal compounds present in the melt to elemental metal in a second heating chamber; andtransferring the resulting melt to a third heating chamber;wherein any elemental metal is sedimented in each heating chamber and the sedimented elemental metal is continuously returned from two of the heating chambers to the remaining heating chamber, wherein the elemental metal is collected in at least one of the first or second heating chambers and discharged therefrom, and an apparatus for performing the process.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: June 16, 1998
    Assignees: Von Roll Umwelttechnik AG, Holderbank Financiere Glarus AG
    Inventors: Ernst Hugentobler, Hans Ruegg, Karl-Heinz Pflugl, Norbert Kiethe, Ruedi Frey, Anton Mayer, Theo Rey, Alfred Edlinger