Solid Waste Disposal Patents (Class 241/DIG38)
  • Patent number: 6135374
    Abstract: Apparatus and improvements thereto are disclosed for processing food by-products. The apparatus in accordance with the invention includes a frame; an upstream and a first downstream pair of opposed rollers mounted for rotation within the frame, at least one of the rollers being rotated by a rotary drive mechanism. The apparatus further includes opposed upper and lower conveyors advanced between the upstream and first downstream pairs of opposed rollers as the rollers rotate, with the lower conveyor providing along opposite edges thereof for liquid run-off. The apparatus further includes an input region adjacent the upstream pair of rollers for introducing food by-products onto the lower conveyor. The first downstream pair of opposed rollers form between the upper and lower conveyors a gap of a first defined height. The upstream pair of opposed rollers form between the upper and lower conveyors a gap of a second defined height, wherein the first defined height is substantially less than second defined height.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: October 24, 2000
    Assignee: Mursen Environmental, Inc.
    Inventors: Kristin G. Hansen, Jeffrey A. Murray
  • Patent number: 6136590
    Abstract: A waste material separating method and apparatus a number of sequential processes the separate paper, plastic, glass, wood, and metals from waste materials. Bulk materials are manually removed from conveyors. Screening machines separate fine from course materials. Fine organic materials are transported to a composting area or to a digester to generate gas used fuel to produce thermal energy. A shredder cuts the course materials which mixed and pressed into pellets.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: October 24, 2000
    Inventor: Robert A. Kruse
  • Patent number: 6125774
    Abstract: A process for feeding solid industrial and special waste to combustion installations. The waste materials are separated from the combustion chamber by a lock system, are comminuted and homogenized in an inert-gas atmosphere.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: October 3, 2000
    Assignee: BASF Coatings AG
    Inventors: Kurt Kohler, Alfred Burger, Wilhelm Dinkelborg-Lucke, Heinz Bertich, Rolf Hetzelberger, Paul Kolberg, Karl Heinz Mohlmann, Michael Walterbusch
  • Patent number: 6106197
    Abstract: A process for reducing waste material for use with household and other landfill waste material at a landfill waste management site is described. The process reduces the volume of waste material in the landfill site, prevents contamination of the ground soil, allows for the natural breakdown of the organic components of the waste material and allows for the recycling of some or all of the waste material.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: August 22, 2000
    Inventors: Stanley M. Kozak, William M. Kozak, Murray L. Kozak
  • Patent number: 6089479
    Abstract: A method for treating waste printing circuit boards with molten mixture of inorganic salts comprising actions of: (1) putting the circuit boards into the molten inorganic salts contained in a treating furnace; (2) crushing and stirring for copper foil of the circuit boards to be separated therefrom; (3) further stirring to separate the foil from the plastic and the glass fiber of the circuit boards; (4) scraping the floating residues of the plastic and the glass fiber on upper surface of the molten inorganic salts with a floating residues scraping device; (5) collecting the carbonized plastic residues and the glass fiber; (6) converting waste gas produced in the process into an unharmful and stable one; and (7) removing the copper foil by a certain amount regularly with a removing device.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: July 18, 2000
    Assignee: Cleanenv' Engineeering Consultant Co., Ltd.
    Inventors: Kuo-Ching Chang, Kuo-Jer Hwang, Gow-Guang Goan, Wei-Hsin Li
  • Patent number: 6089814
    Abstract: A device for tearing and ripping bags comprising a plurality of driven, endless rotary support elements supporting tearing and ripping elements, wherein the rotary support elements are disposed sequentially along the axis of rotation. A plurality of covering and/or stripping elements is in each case disposed at least at one of the neighboring rotary support elements and the covering and/or stripping elements overlap at least in part a sequentially neighboring rotary support element. The covering and/or stripping elements on a rotary support element are aligned with the tangential motion advance direction in order to improve the device for preventing that long, tear-resistant pieces end up in the slot between the rotary support elements and bring the ripping device to a standstill based on a winding-up long tear-resistant pieces. For this purpose, the covering and/or stripping elements are disposed at a distance relative to each other.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: July 18, 2000
    Inventor: Manfred Bayer
  • Patent number: 6086000
    Abstract: A preferred shredder dust treatment process which includes: (1) a step of executing a first crushing; (2) a step of separating and recovering metals from the first crushed product; (3) a step of a second crushing; (4) a step of separating and recovering metals from the second crushed product; (5) a step of executing a third crushing; (6) a step of collecting and recovering dust and the like by fluidizing the third crushed product to separate therefrom a fluffy dust and pneumatically transporting the separated fluffy dust to a dust collector; and (7) a step of separating and recovering non-ferrous metals, non-metals, and the like, from the third crushed product. Preferably, the shredder dust is crushed by crushers having square blades.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: July 11, 2000
    Assignee: Envitech Co., Ltd.
    Inventor: Kozo Murata
  • Patent number: 6059206
    Abstract: The present invention relates to a process and apparatus for the separation of materials from within fluorescent lamps and other mercury containing commercial elements. The process and apparatus can separate materials of different compositions by non-chemical means into easily treatable segments without causing significant introduction of wastes (especially mercury waste) into the environment during physical separation. This invention operates by repeatedly crushing and breaking the original article (e.g., the fluorescent lamp) into progressively smaller pieces under controlled circumstances and controlled air pressure so that their various component materials are separately collected and these separately collected components may be individually processed (recycled or purified) without significant introduction of mercury into the environment.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: May 9, 2000
    Assignee: Mercury Waste Solutions, Inc.
    Inventor: Richard A. Potts
  • Patent number: 6053957
    Abstract: The present invention provides a waste treatment process and device thereof which can reduce the size and weight of organic waste by decomposing the waste to powder form and bacteria free substance that may be used as a kind of fertilizer for plants. The waste is first frozen by liquefied nitrogen in a cooling chamber to a temperature less than F., wherein during this freezing procedure, the gas generated from the waste must be removed from the cooling chamber. Then, the frozen nitrogen is immediately transferred to a heated chamber having a temperature of at least F. but not exceed F. During this heating procedure, the water content of the waste is sucked out of the heated chamber, so that the waste is decomposed to form the bacteria free powder.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: April 25, 2000
    Assignee: ATT Environmental Technology Inc.
    Inventor: Thomas Chen
  • Patent number: 6039867
    Abstract: A method is described for the continuous disintegration of microbial sludge in a sewage clarification or sewage treatment plant wherein the microbial sludge is decomposed biologically by bacteria and the resultant sludge (5) is exposed to sonic radiation in a treatment vessel (1) in order to split the cell walls of the microorganisms. With that, the sonic radiation shall be generated asymnetrically in the treatment vessel (1). The intensity of the sonic exposure lies in an area of 500 to 1500 W/m2 and the sludge (5) is fed with a mean dwell-time of 2 to 4 minutes in counter-flow through the treatment vessel (1). The device for carrying out the method possesses a treatment vessel (1) with an eccentrically arranged sonic resonator arranged within (7).
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: March 21, 2000
    Assignee: Telesonic AG
    Inventors: Karl Frei, Klaus Luger
  • Patent number: 6036124
    Abstract: A system for gasifying styrofoam and liquefying the resulting gas to a liquid styrofoam. This system is particularly useful for disposition of the styrofoam onto which non-meltable substances adhere. The system includes a pulverizing mechanism for pulverizing a lump of styrofoam and a melting vessel for melting the pulverized styrofoam. The resulting melt is filtered by a strainer to remove the non-meltable substances. The filtered styrofoam melt is transferred to a gasifying vessel for vaporization. The styrofoam gas (combustible gas) is then condensed by a gas cooler. A gas leaking from the melting vessel to the pulverizing mechanism through the constant volume feeder is discharged by a discharge line. The styrofoam gas is a combustible gas so that it may be used as a fuel gas for a gas burner. Part or all of the styrofoam gas is condensed by the gas cooler and recovered as a fuel oil.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: March 14, 2000
    Assignee: Takamo Industries Co., Ltd.
    Inventors: Kenzo Takahashi, Kazukuni Shibata, Masaya Takahashi
  • Patent number: 6032881
    Abstract: A method and system for separating, collecting and isolating radioactive metallic elements from low grade, dry, solid non-metallic nuclear bulk waste that includes physically degrading the low grade waste by shredding or grinding into small pieces, configuring the bulk waste into a waste stream, bombarding the waste stream with microwave energy at a preselected frequency treating the waste stream in a time varying magnetic field, causing the radioactive particles to disperse away from the bulk waste and collecting the separated micron sized radioactive particles. The present method and system provide for a low cost, non-complex system of separating out conductive radioactive particles from essentially non-metallic, dry, low grade nuclear waste allowing safe return to the environment of 95% to 99%, by volume, of the processed nuclear waste, greatly reducing the volume of nuclear waste that must be safely stored.
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: March 7, 2000
    Assignee: Environmental Solutions & Technology, Inc.
    Inventors: Joshua D. Bass, Clayton H. Kass
  • Patent number: 6029918
    Abstract: Vegetable matter is composted in an outer drum having an axis for rotation which is disposed horizontally for rotation inside an outer housing. The outer drum and the housing have respective waste inlets which are in communication with each other for receiving waste so that waste which is introduced into the housing is received inside the outer drum. An inner drum having an axis for rotation which is disposed horizontally for rotation of the inner drum is disposed inside the outer drum, and receives waste from the outer drum. A waste outlet in the inner drum discharges decomposing waste into a finishing drawer. The configuration of the outer drum with the inner drum disposed inside, allows for a two-stage decomposition of waste matter, thereby maximizing the capacity of the composter while occupying a minimum of space which is customarily at a premium in the kitchen environment.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: February 29, 2000
    Inventor: Henric Sundberg
  • Patent number: 6016979
    Abstract: A system of processing big refuses such as spring-containing mattresses according to the present invention includes a crushing process for crushing big refuses such as spring-containing mattresses by a single axial crusher capable of crushing them into a certain particle size or less, a magnetic-force grading process for grading iron material by a magnetic-force grader from crushed pieces crushed in said crushing process, and a wind-force grading process for removing light-weight refuses such as fiber adhering to iron material graded in said magnetic-force grading process by a wind-force grader.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: January 25, 2000
    Assignees: Integrated Recycling Systems Ltd., Fuji Car MFG. Co., Ltd.
    Inventors: Derek Murray Squires, Kanichi Saito, Shinji Otuji
  • Patent number: 6012659
    Abstract: To provide a method for easily discriminating used and unused gas generators from among gas generators for air bags separated from used cars in a car scrapping process. A method for discriminating between used and unused gas generators according to the present invention is a method for discriminating used and unused gas generators from among gas generators for air bags separated from used cars in a car scrapping process, and this method comprises the steps of:a) crushing used cars mounted with gas generators each having on a surface thereof a material discoloring according to the surface temperatures in actuating the gas generator to separate the gas generators, andb) discriminating the gas generators in which surfaces are discolored and the gas generators in which surfaces are not discolored from among the separated gas generators.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: January 11, 2000
    Assignees: Daicel Chemical Industries, Ltd., Toyota Jidosha KabushikiKaisha
    Inventors: Yuji Nakazawa, Mitsuhiko Fukabori, Yusaburo Nakazato, Osamu Fujimoto, Yutaka Kondo, Masahiro Miyaji
  • Patent number: 6000639
    Abstract: Municipal solid waste (MSW) material is sized to provide a particulate material which is density separated into organic and inorganic portions using a suitable polar acidic organic liquid medium. The organic-MSW portion is digested in the polar acidic organic medium such as phenol at conditions of F. temperature, 300-2000 psig pressure and 5-100 minutes residence time. The digested organic material is then fractionated to produce gas, a light liquid boiling below about C., the polar acidic organic liquid medium such as phenol, boiling between 170 and C., and a liquid slurry boiling above about C. and including a powder material melting above about C. The recovered acidic organic liquid fraction is preferably recycled back to the density separation and/or digesting steps for further use in the process. The liquid slurry fraction product having heating value of 9,000-16,000 Btu/lb.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: December 14, 1999
    Assignee: Hydrocarbon Technologies, Inc.
    Inventor: Partha S. Ganguli
  • Patent number: 5992774
    Abstract: A method and system for recycling construction waste articles is disclosed. In the method and system of this invention, construction waste articles are crushed into primary pieces of not larger than 200 mm in size. The primary pieces are screened into aggregate of not smaller than 40 mm in size and earth and sand. The aggregate is washed in a water tank using a water jetting and aeration effect with any floating materials floating on water. The washed aggregate is separated from water using a screen prior to being crushed into final pieces having sizes of 45-75 mm. The final pieces are divided into standard aggregate of not larger than 25 mm in size and substandard aggregate of larger than 25 mm in size. The substandard aggregate is returned to a cone crusher so as to be recrushed.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: November 30, 1999
    Assignee: Insun Company, Ltd.
    Inventor: Jong-Taek Oh
  • Patent number: 5989496
    Abstract: A waste plastic disposal apparatus (K1-K4) including a storage portion (2) for storing waste plastic; a heating portion (7) for heating the waste plastic, which includes a heater (7b) and a fan (7a); a hot-air circulating path (20) for circulating hot air therethrough, which is defined by the storage portion (2) and the heating portion (7); an exhaust path (10) which branches off from the hot-air circulating path (20); and a deodorizing portion (9) which is provided in the exhaust path in response to intake of a predetermined quantity of external air into the hot-air circulating path (20) per unit time, the hot air in the hot-air circulating path (20) is exhausted in a quantity equal to the predetermined quantity from the exhaust path (10) through the deodorizing portion (9).
    Type: Grant
    Filed: January 12, 1998
    Date of Patent: November 23, 1999
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kunihiro Ukai, Takeshi Tomizawa, Tatsuo Fujita, Jiro Suzuki, Mitsuyuki Nakazono, Tomotaka Hattori
  • Patent number: 5980592
    Abstract: A method and a plant for processing problematic, organic, chemical wastes for the disposal thereof. The different types of waste are collected in separate portions and the liquid waste portions are pooled, and the resulting liquid mixture is left to separate into a number of fractions. Each viscous or solid waste portions is subjected to a compatibility test with a liquid fraction. The waste portions are admixed with an amount of a compatible liquid fraction, ensuring that a workable mixture is obtained. The different mixtures are gradually mixed and a mixed and workable buffer portion is obtained. The buffer portion or a portion thereof is subjected to grinding at a high shear. A pumpable, combustible dispersion is obtained, which can be incinerated without any risk of explosions.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: November 9, 1999
    Assignee: RAG Umweltrohstoffe GmbH
    Inventor: Dennis S.o slashed.gaard
  • Patent number: 5980823
    Abstract: A garbage processor has a vessel for receiving garbage, a rotary pulverizer/stirrer for crushing and stirring the garbage in the vessel and a first heater for drying the garbage in the vessel. Steam is generated upon heating and drying of the garbage. An air blower feeds high pressure ambient air into the vessel to force the steam out of the vessel. A steam separator is provided for separating the steam into water and a gas. A second heater is provided downstream of the steam separator for oxidizing the gas emanating from the steam separator to reduce the smell of the gas. The gas is deodorized before it is discharged to the atmosphere.
    Type: Grant
    Filed: May 20, 1997
    Date of Patent: November 9, 1999
    Assignee: Jidosha Buhin Kogyo Co., Ltd.
    Inventors: Tadaaki Nekozuka, Kiyoshi Fukushima, Hirohide Nakao, Tomio Terayama, Akihiro Shirata, Sinichiro Fujita, Kenichi Ueda, Masami Hatayama, Hiroshi Ohdate
  • Patent number: 5979033
    Abstract: A method and a device for treating waste printed circuit boards with molten tin include process of throwing printed circuit boards into a molten tin bath in treating furnace, letting the boards proceed crashing, stirring and carbonizing treatment for separating copper foil, thermosetting plastic and glass fiber. Then these three kinds of materials are respectively separated from each other by taking advantage of their different specific gravity and collected in separate tanks to recover copper and other metals from the waste printed circuit boards.
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: November 9, 1999
    Assignee: Cleanevi' Engineering Consultant Co., Ltd.
    Inventors: Kuo-Ching Chang, Sen-Chi Lee, Chin-Chih Tai
  • Patent number: 5975801
    Abstract: A process for producing a product for use as an alternative cover material for landfills using recycled materials is provided.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: November 2, 1999
    Inventors: Richard S. Burns, Sr., Allen T. Burns, Richard S. Burns, Jr.
  • Patent number: 5957295
    Abstract: The present invention discloses an apparatus and method for the processing of refuse mixtures which may include relatively high concentrations of plastic waste, such as refuse mixtures including waste packages originating from household refuse and industrial refuse and especially refuse mixtures including plastic waste in the form of sheeting, hollow bodies, beakers and composite materials whereby the solids of the refuse mixture are comminuted, the communited refuse mixture is then moistened, mechanically disintegrated, mixed with a separating fluid and then dewatered and separated by density by a sorting centrifuge thereby obtaining a plastic fraction which is free of impurities.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: September 28, 1999
    Assignee: Baker Hughes (Deutchland) GmbH
    Inventor: Jochen Neureither
  • Patent number: 5935536
    Abstract: Apparatus and method for reclaiming expanded synthetic resin wastes in a form suitable for subsequent injection molding. The apparatus includes a tank containing a solvent having a pump for pumping dissolved resin wastes to an evaporator. The evaporator comprises an endless belt on which dissolved resin waste is deposited and precipitates in the form of a thin film. A heater is disposed below the belt to expedite separation of solute and solvent by evaporation. A blower disposed within a housing enclosing the endless belt establishes air circulation over the belt, further promoting evaporation. The thin film is wound on a roller and subjected to a heated roller to fuse the many thin film strata into a solid, generally cylindrical mass. The solid mass is then comminuted by a granulator. Evaporated solvent is recovered in a condenser and is reused.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: August 10, 1999
    Inventors: Berkley C. Badger, Kevin E. Hissem, David E. Jones
  • Patent number: 5934576
    Abstract: A trash disposal system for a building which facilitates the process of disposing of trash created within that building. The system includes a chute having an inlet within the building which routes the trash to one or more comminutors, such as grinders, arranged in series. The particles output from the comminutors are reduced in size and pass into a collection vessel installed underground external to the building. An agitator within the collection vessel mixes the trash particles introduced therein and promotes dissolution of the trash particles into water within the collection vessel. The water within the collection vessel, and the trash particles dissolved in that water, are either pumped or flow by gravity from the collection vessel to either a sewer lateral or a drain field for distribution. A method of disposing of trash is also disclosed.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: August 10, 1999
    Inventor: Troy A. Robinette
  • Patent number: 5927626
    Abstract: The present invention relates to a solid substance crushing vehicle which is able to move to a place of collection of glass products, chinaware, old stools, bricks, refractories, tourmaline of magnetic ores, etc. to automatically crush, produce, screen the crushed substances and cutlets at a high operational efficiency by only switching on after such solid substances are charged through its charging opening, wherein the same is constructed so as to include a crushing machine 4 installed on the deck 3 of a vehicle 2, a charging unit 5 connected to the crushing machine 4, a crushed substance transfer device 6, one end of which is connected downward of the crushing machine 4, a screening portion 7, one end of which is connected to the crushed substance transfer device 6, collecting cases 11a, 11b, 11c connected to the other end of the screening portion 7, a cover portion 15 to cover up the respective devices, and an elevating unit 16 openably and closably disposed at the opening 15b of the cover portion 15.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: July 27, 1999
    Assignees: Trim Co., Ltd., Toyo System Plants Co., Ltd.
    Inventors: Hiroshi Shinjo, Toyoyuki Okamoto
  • Patent number: 5925321
    Abstract: A garbage disposing device of an energy-saving type comprises a housing having an air intake port and an air discharge port, and a vessel mounted within the housing to store therein food wastes. The vessel has an air inlet and an air outlet. An intake passage is formed in the housing to extend from the intake port to the air inlet for introducing a fresh air into the vessel. An exhaust passage is formed within the housing to extend from the air outlet to the discharge port for discharging therethrough an air containing unpleasant odor resulting from a decomposition of the food wastes. A deodorizer unit comprises a catalyst for decomposing the unpleasant odor in the air, a heater for activating the catalyst, and a case for incorporating therein the catalyst and the heater.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: July 20, 1999
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Masanori Koyamoto, Harushige Tsusaka, Kaoru Yamashita, Kazumasa Rokushima, Junichi Ikeuchi, Hiroyasu Kawanishi, Takashi Hyodo, Hideo Fujimoto, Tomoaki Fujii, Yoshitoshi Kanetsuna
  • Patent number: 5908165
    Abstract: A process and apparatus for reprocessing mixed plastics, more particularly mixed plastics from household refuse. The material being reprocessed is shredded in a shredding stage, agglomerated in an agglomerator wherein volatile substances are sucked off by suction devices, and the agglomerated material is dried over a drying path. In order to reduce obstructive substances, such as paper and ash, the fine grain portion in particular of the plastics agglomerated is screened off. With the drying process it is possible to produce without wet processing steps which are high in energy consumption a plastics agglomerate of high quality which is suitable for industrial re-use.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: June 1, 1999
    Assignee: Der Gruene Punkt-Duales System Deutschland Aktiengesellschaft
    Inventors: Dietmar Guschall, Heiner Guschall, Axel Helmerth, Jorg Himmel, Gerhard Fahrbach, Heinz-Reiner Schnettler
  • Patent number: 5906793
    Abstract: A process for treating so-called wet refuse of urban origin, especially food waste from canteens, communities and other similar catering establishments, and originating from the food industry and the agrifoods industry, including the phases of subjecting a continuous stream of said wet refuse, previously ground, to heating to a pasteurization/sterilization temperature for the time needed for complete cooking, to give a continuous pasty and wet stream of cooked and sanitized refuse and subjecting the said continuous stream to drying, to give a product having a moisture content of not more than 15%.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: May 25, 1999
    Assignee: Vomm Chemiphara S.r.l
    Inventor: Corrado Vezzani
  • Patent number: 5902976
    Abstract: Improved control for the separation of waste materials, or materials having waste components, is provided by the injection of air, or other gas bubbles, into a water-filled tank while simultaneously depositing the waste containing material to be separated onto the top of the water. This method is especially useful where both portions of some or all of the materials to be separated from each other have specific gravities greater than that of pure water. The rapidly rising air bubbles provide turbulence and buoyancy to materials that are slightly heavier than water, such as water-soaked organic products, but do not prevent heavier materials, such as sand and metals from sinking. An apparatus is described which allows for the removal of both the floating and sinking fractions from the floatation tank.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: May 11, 1999
    Inventor: Donald R. Beasley
  • Patent number: 5891403
    Abstract: The present invention features a portable waste disposal unit designed to receive expanded polystyrene or similar polymeric waste. Waste is loaded into a waste reception chamber via a loading door. Once the loading door is closed and locked, a mechanical ram forces the waste charge downward into a removable tank containing a layer of a solvent such as perchloroethylene and an upper layer of water. The waste is dissolved in the solvent and stored until the tank is either removed or drained and the contents shipped to an appropriate waste recovery facility. The small size of the portable waste disposal unit makes it ideal for location near the source of the waste to be recycled. Significant compacting of wastes such as expanded polystyrene may be realized by dissolving the waste in a solvent such as perchloroethylene. In addition, the first step of a recycling process is effectively accomplished within the inventive unit.
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: April 6, 1999
    Inventors: Berkley C. Badger, Kevin E. Hissem
  • Patent number: 5887805
    Abstract: Preferred processes to separate metallic and non-metallic constituent components of at least one electronic product are generally comprised of the following steps: (a) repeatedly crushing the at least one electronic product to create a plurality of crushed electronic components; (b) repeatedly screening the plurality of crushed electronic components to ensure that the plurality of crushed electronic components substantially conform to a specific size; and (c) separating the plurality of crushed electronic components after steps (a) and (b) into non-metallic constituent components and metallic constituent components by weight. In addition, before step (a), the at least one electronic product must be provided or otherwise transported to crushing machines to perform step (a). Likewise, the crushed electronic components must be transported from one crushing machine to another crushing machine and to the separating apparatus to perform step (c).
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: March 30, 1999
    Assignee: Resource Concepts, Inc.
    Inventor: Ray Chapman
  • Patent number: 5884854
    Abstract: Method and system for mechanical separation of materials from discarded fluorescent light tubes being broken up. The system comprises a fan-driven exhaust air system which is designed for air transportation and separation of material fragments and which is supplied with air from three separating towers (8, 8', 8"). A mill (2) which breaks up the fluorescent light tubes delivers fluorescent light tube material to a first separating tower (8) where larger material fragments are separated off, while smaller material fragments and particles leave the tower together with the outflowing air. A screen (22) divides the coarse fraction from the tower into glass fragments and metal fragments. The metal fragments from the screen are made to pass through a metal crusher (28) which is connected to a second separating tower (8'). A magnetic separator (34) separates off magnetic material from a conveyor (32) for the glass fragments and metal fragments.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: March 23, 1999
    Assignee: MRT System AB
    Inventors: Hans-Eric M.ang.nsson, Christer Sundberg
  • Patent number: 5871161
    Abstract: A method and apparatus for individually collecting layers from a laminated film containing many layers made of different materials by peeling or separating the layers one from the other. The laminated film having a plurality of layers made of different materials is shredded into a plurality of fragments to be processed; and the fragments to be processed are peeled or separated according to the type of layer by applying an impact frictional striking force to each of the fragments to be processed. Subsequently, the peeled or separated layers obtained in the peeling and separating step are subjected to a wind force classifying step. The collected layers in the mixed state are separated from one another, and they are individually collected.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: February 16, 1999
    Assignee: Ein Engineering Co., Ltd.
    Inventor: Sadao Nishibori
  • Patent number: 5863002
    Abstract: A waste processing apparatus which can easily and efficiently process waste, a waste recovery system using this apparatus and a liquid container ideal for use with the waste processing apparatus and waste recovery system. The waste processing apparatus comprises a processing part for processing supplied waste (for example foam polystyrene) with a processing liquid (for example limonene) and a storing part for storing produced liquid (for example limonene containing dissolved foam polystyrene) produced in this processing part and provided with a removable liquid container constructed to both supply processing liquid to the processing part and receive produced liquid produced by the waste processing apparatus.
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: January 26, 1999
    Assignee: Sony Corporation
    Inventors: Tsutomu Noguchi, Minoru Matsushima, Hiraku Sugiki, Yasuhiro Hirafune
  • Patent number: 5855664
    Abstract: A method of manufacturing Construction and Demolition ("C&D") disposal debris into a substitute/alternative daily/initial cover product approved by an environmental regulatory authority for use at a solid waste disposal landfill, wherein the C&D disposal debris, before processing/manufacturing, is considered a raw material/feed stock composed of a commingled inseparable mixture of solid waste components/items which are classified based on their origin as C&D disposal debris. These components are mechanically processed by screening or shredding to a predetermined specification particle size to collectively create/form a "C&D Recovered Screen Material" ("RSM") product. This C&D-RSM product is applied as daily/initial cover material covering compacted and leveled Municipal Solid Waste ("MSW") substituting the normally used sand, dirt or earthen materials at permitted/licensed MSW disposal landfills operating with a landfill leachate containment system or other approved site location.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: January 5, 1999
    Assignee: Adam J. Bielecki
    Inventors: Adam J. Bielecki, Robert Harrington
  • Patent number: 5856173
    Abstract: An organic waste disposer 10 such as is commonly mounted to a kitchen sink 12 has mounted next to it a device 14 for injecting a predetermined quantity of bio-enzyme material into the disposer's grinding chamber each time the motor of the disposer is turned on.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: January 5, 1999
    Assignee: Emerson Electric Co.
    Inventors: Wayne C. Riley, Nicholas J. Hirsch, Thomas J. Weber, Steven S. Landowski
  • Patent number: 5833922
    Abstract: An apparatus and method for processing medical waste are disclosed. Medical waste is disintegrated or shredded, disinfected with radio-frequency electromagnetic radiation and then transformed into useful material such as reclaimed plastic and refuse-derived fuel.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 10, 1998
    Assignee: Stericycle, Inc.
    Inventors: Jeffery S. Held, James W. Sharp
  • Patent number: 5829694
    Abstract: An apparatus separates a substantially metallic portion from a substantially non-metallic portion or constituent components of at least one electrical product, comprising a plurality of crushing machines, such as a first crushing machine and a second crushing machine and a separating machine. The first crushing machine crushes the at least one electrical product to create at least one crushed electrical product. The first crushing machine has a first screen affixed thereto to regulate a first flow of the at least one first crushed electrical product from the first crushing machine. The second crushing machine crushes the at least one first crushed electrical product to create at least one second crushed electrical product. The second crushing machine has a second screen affixed thereto to regulate a second flow of the at least one second crushed electrical product from the second crushing machine.
    Type: Grant
    Filed: January 4, 1996
    Date of Patent: November 3, 1998
    Assignee: Resource Concepts, Inc.
    Inventor: Ray Chapman
  • Patent number: 5829691
    Abstract: A soil washing apparatus utilizing a water-based surfactant to separate contaminants from soil particles with particle sizes within a predetermined range. After removing the surfactant/contaminant/water mixture from the soil particles, the soil is returned to the remediation site, while the mixture is processed through an oil/water separator. Oil and contaminants are then disposed of, while the water and surfactant are centrifuged, and the resulting supernatant is recycled back into the apparatus for use with more contaminated soil. A method of soil washing is also provided.
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: November 3, 1998
    Assignee: Soiltech Environmental Systems Inc.
    Inventor: Roudel Gaudin
  • Patent number: 5820541
    Abstract: A process, formula and apparatus for the treatment and sterilization of biological, solid, liquid, ferrous metallic, non-ferrous metallic, toxic and hospital dangerous waste or residual material utilizes a mixture of oxygen, ozone, water, and optionally, carbon dioxide, in variable proportions and rates. The apparatus comprises an oxygen container (10) and a carbon dioxide container (11) from which the oxygen and the carbon dioxide are incorporated through respective conduits (13) and (15) to an ozonizer (1) provided with cooling water inlet (16) and outlet (17). The conduits (13) and (15) exit adjacent to the ozone conduit (14), up to the injector (3), and are actuated by the pump (2) and pass through the mixing conduit (4) to the absorption and outgassing tank (5) from which the conduit (6) for the washing fluid passes to the treatment tank (7) having a degasification valve (12) or catalyst.
    Type: Grant
    Filed: December 26, 1996
    Date of Patent: October 13, 1998
    Assignee: Biozon, S.L.
    Inventor: Manuel Berlanga Barrera
  • Patent number: 5816510
    Abstract: A grinder pump station is capable of having its height adjusted in the field during installation, and includes a substantially cylindrical inner wall having an inner surface and an outer surface. The inner surface of the inner wall defines a cavity for insertion and mounting of a grinder pump therein. In addition to the substantially cylindrical inner wall, there is a substantially cylindrical outer wall having an inner surface and outer surface, wherein the outer wall has a diameter greater than the inner wall. For increasing the structural integrity of the grinder pump station, a plurality of rigid members extend between the substantially cylindrical inner wall and the substantially cylindrical outer wall, each of the plurality of rigid members being affixed to the inner wall and each of the plurality of rigid members being engaged to the inner surface of the outer wall. A base disposed is located adjacent to a lower portion of the inner and outer walls.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: October 6, 1998
    Assignee: Environment One Corporation
    Inventors: George A. Earle, III, Clark A. Henry, Andrew P. Sleasman
  • Patent number: 5800776
    Abstract: A method for heat sterilizing or disinfecting hospital waste includes the steps of grinding and/or comminuting the waste under a cutting force and for an amount of time such that a quantity of heat which is sufficient to reach and maintain the sterilization or disinfection temperature within the massive waste is generated by friction. The apparatus includes a rotor provided with vanes or blades for grinding or comminuting the waste and a plurality of fixed strikers in the form of vanes or blades associated with the walls of the housing.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: September 1, 1998
    Assignee: S.T.R.A.P. SrL
    Inventors: Gianpiero Morgantini, Roberto Pellegrin
  • Patent number: 5797549
    Abstract: The apparatus for separating plastic from paper fibers includes conveying means for initially passing contaminated paper while removing waste, adding water to the flow of plastic contaminated paper for converting the paper to a pulp condition, agitating the water and paper pulp to release plastic material so that the paper pulp will more easily release the plastic material, directing the paper pulp to a dewatering step before grinding in a hammer mill while grinding the released plastic material to be used as a fuel for creating a drying atmosphere in the hammer mill, and packaging the paper from the hammer mill in bales.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: August 25, 1998
    Inventor: Robert M. Williams
  • Patent number: 5794862
    Abstract: An apparatus and method for chemically and physically stabilizing contaminated soil is disclosed. The soil is homogenized in a homogenizer; dropped into a mixer below the homogenizer and mixed with an additive; then dropped to a processing terminus located below the mixer. The apparatus and method are useful for processing highly clumped and/or acidic soil, e.g., soil contaminated with mining waste.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: August 18, 1998
    Assignee: Itex Environmental Services, Inc.
    Inventor: Irfan A. Toor
  • Patent number: 5788167
    Abstract: Preferred processes to separate metallic and non-metallic constituent components of at least one electronic product are generally comprised of the following steps: (a) repeatedly crushing the at least one electronic product to create a plurality of crushed electronic components; (b) repeatedly screening the plurality of crushed electronic components to ensure that the plurality of crushed electronic components substantially conform to a specific size; and (c) repeatedly separating portions of the plurality of crushed electronic components after steps (a) and (b) into non-metallic constituent components, metallic constituent components and mixed constituent components by weight, the mixed constituent components having both non-metallic constituent components and metallic constituent components; and (d) returning the mixed constituent components to be recrushed, rescreened, and reseparated in steps (a), (b), and (c).
    Type: Grant
    Filed: January 4, 1996
    Date of Patent: August 4, 1998
    Assignee: Resource Concepts, FNC
    Inventor: Ray Chapman
  • Patent number: 5785260
    Abstract: A method and system for re-using and recycling garment hangers which is applicable to localized or world wide geographic areas and which (a) eliminates sorting at the collecting point for used hangers, usually a retail store, (b) handles re-usable, recyclable and scrap hangers without restriction on mix components of a given batch, (c) renovates and returns the re-used hangers and recycled hanger material to points of need, and (d) can be physically located at a location dictated solely by convenience considerations without mandatory reliance on the physical proximity of hanger manufacturing facilities. The recycled hanger material may be sorted into a first part suitable for recycling and a second part suitable for scrap by manual and/or non-manual means.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: July 28, 1998
    Assignee: Batts, Inc.
    Inventor: Donald F. Morgan
  • Patent number: 5785259
    Abstract: The present invention is intended to, from thermoplastic molded resin articles composed by a variety of laminating thermoplastic resin materials, separate, classify, select and recover the thermoplastic resin materials with classification in terms of type for reusing these materials.
    Type: Grant
    Filed: September 19, 1996
    Date of Patent: July 28, 1998
    Assignee: EIN Engineering Co., Ltd.
    Inventor: Sadao Nishibori
  • Patent number: 5775604
    Abstract: Glassware such as glass bottles and the like is crushed, graded, screened and collected in accordance with the size of the crushed glass. Glassware such as glass bottles is supplied to a glassware charging frame passed to a first crusher and crushed by the first crusher. Metal is removed from the glassware crushed by the first crusher. The thus crushed glassware with iron pieces having been removed is supplied to a last crusher. Glassware crushed by the last crusher is supplied to a sieve device. The glassware crushed by the last crusher is selected in accordance with grain size by the sieve device. The glassware selected in accordance with grain size then is collected.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: July 7, 1998
    Assignees: Kaneto Co., Ltd., Kankyohozenservice Co., Ltd.
    Inventor: Koithi Sato
  • Patent number: 5773281
    Abstract: Water contained in raw garbage introduced through a throw port is drained off by a filter member and a water-draining gate, and is drained into a drainpipe, the water having good quality. The raw garbage from which water is drained off to a sufficient degree is dry-pulverized by a pulverizer unit and is smoothly blown into the microorganism decomposition chamber through a carrier duct having a flared end, utilizing the impact force of the impeller revolving in the pulverizer unit. The dry-pulverized raw garbage that is thus conveyed is decomposed by a microorganism carrier in the microorganism decomposition chamber.
    Type: Grant
    Filed: April 24, 1996
    Date of Patent: June 30, 1998
    Assignee: Nippondenso Co., Ltd.
    Inventors: Masaya Ichikawa, Junichi Ooki, Toru Muramatsu