Solid Waste Disposal Patents (Class 241/DIG38)
  • Patent number: 5342582
    Abstract: An apparatus for reprocessing special waste of photocrosslinkable scrap material is composed of a housing equipped with a feed hopper, one or more UV emitters arranged in the housing to irradiate the scrap material, and a chopper arranged in the housing to comminute the scrap material by chopping. The apparatus is usefully employed in a method for reprocessing photocrosslinkable scrap material.
    Type: Grant
    Filed: April 5, 1993
    Date of Patent: August 30, 1994
    Assignee: Morton International, Inc.
    Inventors: Klaus Horn, Juergen Lingnau, Horst Weiler
  • Patent number: 5339961
    Abstract: A machine for removing yard waste from bags and for sorting the waste. Filled bags dropped into a hopper have offset slashes cut in opposite sides by blades mounted upon two rotary shafts. The blades are pivoted to minimize solid tramp waste damage, and are mounted in opposing paris for balance. Guards, extending inward from opposed parallel hopper sides enclose each shaft and direct the bags between them. Slots through the guards in the blade paths permit the blades to pass through. Flexible wipers between backing plates extend inward from both sides of the slots parallel to the blade paths to bear against the blades. The cut bags fall onto a conveyor which carries them to the top of an inclined vibrating screen. The screen is sized to pass yard waste but not bags, bag parts or tramp material. Conveyors under the screen carry the yard waste away for disposal.
    Type: Grant
    Filed: November 8, 1993
    Date of Patent: August 23, 1994
    Assignee: Recycling Specialists, Inc.
    Inventor: Richard L. Mayhak
  • Patent number: 5337965
    Abstract: A method and apparatus for recycling asphalt based roofing material which typically comprises a body of asphalt and fiber, with aggregate on and adhered to the asphalt. The asphalt bodies, with aggregate, are subjected to action to separate or disengage the aggregate from the asphalt body without substantially reducing the size of the aggregate. Disengagement is effected by causing asphalt bodies with aggregate to impact on each other. Disengagement may be effected by placing asphalt bodies with aggregate in water to form in a slurry, which is agitated, as by an impeller. The asphalt bodies float to the top of the liquid, which is a non-solvent for asphalt, and are removed and dewatered; the aggregate of undiminished size is separately recovered.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: August 16, 1994
    Assignee: Finoll Recycling Ltd.
    Inventor: Domenico Chiovitti
  • Patent number: 5337964
    Abstract: The invention relates to a method for recovering secondary raw materials from garbage consisting of a nonuniform mixture of useful materials gone out of use. Said method comprises the following steps: crushing the solid components of said mixture; separating the obtained crushed mixture into fractions of the same species; and subjecting said fractions to a dehumidification process. Said dehumidification process extends continuously throughout all stages of the whole recovering process. The invention also relates to a plant for carrying through said method, said plant comprising means for crushing the solid components of said mixture; separating the obtained crushed mixture into fractions of the same species; subjecting said fractions to a dehumidification process; and transporting the material to be processed form one station to the next one.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: August 16, 1994
    Assignee: Ikotek Informatik, Kommunikation und Fertigungstechnik AG
    Inventor: Thomas Buehlmann
  • Patent number: 5336842
    Abstract: The process for cleaning polluted solids by crushing the solids and removing the pollutants consists of mechanically fluidizing the crushed solids, through-blowing them with air and irradiating them with UV light, the air flow subsequently being subject to dust removal and irradiated with UV light again.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: August 9, 1994
    Assignee: Ultra Systems GmbH UV-Oxidation
    Inventors: Karl F. Massholder, Wilfried Werz
  • Patent number: 5328104
    Abstract: A system and method to shred, transport and reconstruct plastic drums. The drums are loaded into a shredding apparatus that shreds the drums into shreddings. The shreddings are then projected into a compartment in a storage means in a trailer. The loaded storage means is transported to a remote location to be further ground and pelletized for construction into new drums.
    Type: Grant
    Filed: May 18, 1993
    Date of Patent: July 12, 1994
    Assignee: Russell-Stanley Corporation
    Inventors: William Lima, Earl V. Lind, Philip D. Bartlett
  • Patent number: 5322225
    Abstract: A process and machine components, intended to be used for recycling cellulose and plastic components of disposable diapers and other non woven cellulose articles to be utilized as basic raw materials, using splicing of the diapers and cellulose articles; separating the spliced mass into a plastic stream and a cellulose stream; disposing said plastic stream; disintegrating said cellulose stream into water, and separating said cellulose flock from the superabsorbent polymers and other waste effluent included in said cellulose stream; disposing off said superabsorbent polymers and waste in said water effluent; and compacting said separated cellulose flock prior discharge.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: June 21, 1994
    Assignee: Diatec Recycling Technologies Ltd.
    Inventor: Yaron Cina
  • Patent number: 5320450
    Abstract: A method of recycling construction and demolition debris produces a product useful in earth engineering applications, including landfills, soil stabilization and roadbeds. The method involves wet shredding construction and demolition debris into a moist shredded product using landfill leachate as the wetting medium and applying the product as daily cover for a landfill. A landfill design using the recycled product is also disclosed.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: June 14, 1994
    Assignee: Recovermat Technologies, Inc.
    Inventor: R. Paul Smith
  • Patent number: 5314266
    Abstract: A method of recycling construction and demolition debris to produce an article suitable as a daily cover for a landfill is disclosed. The method generally comprises the steps of removing large pieces of metal from the debris, compacting the balance of the debris into small pieces, shredding the debris into smaller particles, separating the ferrous and optionally the non-ferrous metals from the debris utilizing the combination of magnetic, air and/or water separating systems, dewatering the shredded debris to produce a daily cover suitable for use as a daily cover for a landfill.
    Type: Grant
    Filed: May 15, 1992
    Date of Patent: May 24, 1994
    Assignee: Recovermat Technologies, Inc.
    Inventors: R. Paul Smith, Michael I. Price
  • Patent number: 5308003
    Abstract: A rotary auger of the type having a grinding chamber with a rear bulkhead separating the chamber from an equipment enclosure in which the housing for the bearing which supports the auger within the grinding chamber is removably mounted on an outboard face of the bulkhead such that the entire bearing housing, bearing, auger motor and screw may be removed from the bulkhead opening which receives the bearing housing. Consequently, it is not necessary for access to the grinding chamber, which may contain toxic or other hazardous material, to effect mounting or removal of the bearing housing, bearing, motor or auger screw. Accordingly, the bearing housing, bearing, auger motor and auger screw are structured as a cartridge which is mountable on the bulkhead. In a preferred embodiment, the bearing housing includes an outer member which is attached to the bulkhead and extends about the inner periphery of the opening in the bulkhead for receiving the cartridge.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: May 3, 1994
    Inventor: Larry E. Koenig
  • Patent number: 5303872
    Abstract: A field transportable battery disposal unit comprises a storage drum containing a neutralizing fluid and a cutting apparatus adapted to sit on top of the drum, the cutting apparatus including a cutting wheel, a driving apparatus for rotating the cutting wheel, an oscillating apparatus for oscillating the cutting wheel in a "back and forth" motion, slots disposed adjacent the cutting wheel adapted to receive one or more of the exhausted batteries, a water pump for lubricating and cooling the cutting wheel and providing a pre-neutralizing spray of water to the wheel and battery parts, and an air scrubber for neutralizing an acid mist and exhausting the neutralized acid mist, contained within the drum, to the surrounding atmosphere. The battery is inserted into one of the slots in the cutting apparatus, and the cutting wheel cuts the battery into pieces. The water pump sprays water over the cutting wheel and on the battery parts undergoing the cutting operation.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: April 19, 1994
    Assignee: Schlumberger Technology Corporation
    Inventors: Marvin Milewits, Baldemar Fuentes, Dinesh R. Patel
  • Patent number: 5301881
    Abstract: A waste disposal system includes a stock yard for storing waste articles, a pre-treatment apparatus for separating a metal bulk from each waste article fed from the stock yard, a cryogenic crushing apparatus for crushing the separated metal bulk, and a crushing apparatus for crushing the portion of the waste article other than the metal bulk. The system further includes a light-weight article separating apparatus for separating the crushed waste from said crushing apparatus into foamed material and other wastes, and a foaming agent collecting apparatus which separates the foamed material into solid plastics and gaseous foaming agent and then cools and liquefies the gaseous foaming agent.
    Type: Grant
    Filed: May 5, 1993
    Date of Patent: April 12, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Masakatsu Hayashi, Yoshiyuki Takamura, Tsutomu Hasegawa, Hideharu Mori, Tatsuji Katoh
  • Patent number: 5297741
    Abstract: A process is provided for disintegration and pure-sorted separation of different plastics of composite structural parts to be recycled, which parts consist of a support composed of thicker-walled hard plastic, an intermediate layer applied with firm adhesion to this support and composed of foam material, and a flexible foil adhering firmly to the outside of the intermediate layer and made thinner-walled than the support. The composite structural parts are first comminuted into approximately cuboid particles preferably of a granulation of approximately 20 mm and comprising still different plastics. Subsequently, the particles formed are disintegrated in a dry manner into their individual materials, and these are then separated in a pure-sorted manner. For this purpose, the less break-resistant foam material of the particles is selectively comminuted mechanically by an impact stressing of the particles to form substantially smaller crumbs than the remaining pieces of particles of more break-resistant plastic.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: March 29, 1994
    Assignee: Daimler-Benz AG
    Inventors: Jorg Zurn, Michele Melchiorre, Karsten Lohr, Martin Guldenpfennig
  • Patent number: 5297742
    Abstract: A method an apparatus for treating waste, such as domestic garbage, industrial waste and the like, in which the waste is suspended in a liquid such as to obtain a slurry or a pulp. The constituents of the pulp or slurry are separated into different fractions in accordance with their density and/or magnetic properties or like features. Subsequent to having sorted (18, 24, 26) and removed objects from the pulp or slurry, the pulp or slurry is fed to a wet dryer (32) in which the pulp or slurry is kneaded. As a result, the composite material is separated into its respective constituents; for instance, plastic coatings are separated from their respective substrates, such as paper. The pulp or slurry is washed (36) downstream of the wet grinder (32), in order to remove plastic debris (40). The thus obtained fibre suspension is then led away for further treatment (44) or use. When producting the waste/liquid suspension, the suspension is heated to a temperature of at least 60.degree. C.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: March 29, 1994
    Inventors: Leif Grunditz, Odd Karlsen
  • Patent number: 5292075
    Abstract: Due to ever-increasing waste production and ever-dwindling landfill space, alternatives to throwing away disposable diapers is needed. The present invention relates generally to a recycling process for reclaiming used paper and plastic materials. The process comprises a first step of shredding the used disposable diapers into small pieces, which facilitates the separation of the plastics from the pulp-like filler material. The shredded matter is then washed in a solution comprising water containing various ecologically-safe cleaning agents, as well as calcium chloride and salt to neutralize the acrelites in the pulp-like material. The shredded matter is then washed in a washer comprising a perforated cylindrical drum, which spins and forces the slurry through the perforations, while retaining the plastic material. The slurry-like material containing pulp is then dehydrated. The separate plastic and dehydrated pulp-like materials can then be sold for recycling.
    Type: Grant
    Filed: May 29, 1992
    Date of Patent: March 8, 1994
    Assignee: Knobbe, Martens, Olson & Bear
    Inventor: Bruce L. Bartlett
  • Patent number: 5289978
    Abstract: This apparatus is a continuous processing device designed to remove labels and similar contaminants from granulated material prior to its reclamation into a manufactured product. The apparatus is particularly suited to the removal of adhesive backed product labels affixed to plastic base materials subsequent to granulation of the intact plastic item. This allows reprocessing of label-contaminated plastic containers into plastic pellets with greater economy and a higher purity of the end product. The need for this process is particularly acute with blow molded plastic containers which have paper or plastic labels affixed to large areas of their surface. Because this apparatus is continuous in operation, it can be placed in line with other automatic processing equipment such as granulators, washers, classifiers, and extruders. The success of this apparatus results from a combination of physical and thermal forces generated within the equipment which remove the adhesive from the plastic base.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: March 1, 1994
    Inventor: Lynn C. Lundquist
  • Patent number: 5288171
    Abstract: A method of recycling construction and demolition debris produces a product useful in earth engineering applications, including landfills, soil stabilization and roadbeds. The method involves wet shredding construction and demolition debris into a moist shredded product and applying the product as daily cover for a landfill, or in a roadbed, or as a soil stabilizer or nutrient. A landfill design using the recycled product is also disclosed.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: February 22, 1994
    Assignee: Recovermat Technologies, Inc.
    Inventors: R. Paul Smith, Michael I. Price
  • Patent number: 5282713
    Abstract: An apparatus for removing recyclable materials from bags. The apparatus includes a conveyor having tines which engage and assist the conveyor in transporting the bags of materials to a discharge bin. A cutting element cooperates with the conveyor to open the bags allowing the materials to be emptied from the bags at one end of the conveyor into the bin where the materials are subsequently discharged onto compost piles. The bags are then removed from the tines and transferred into a mechanism where they are bundled for disposal or recycling.
    Type: Grant
    Filed: November 27, 1992
    Date of Patent: February 1, 1994
    Inventor: Lars Lande
  • Patent number: 5280858
    Abstract: The present invention relates to a process for working up waste active-mass of consumed, broken accumulator plates, deriving from rubbish-shoots, into active mass, wherein the waste active-masses removed from positive and negative plates are deacidified, washed with water, separately stored and then subjected to heat-treatment. According to the process of the invention the air-dry positive or negative active-mass or the mixture thereof is subjecteda) to heat-treatment at a temperature of 630.degree. to 700.degree. C. for 8 to 60 minutes, then either ground in a manner known per se or fed into a lead-powder mill in an amount of at most 80% by mass, calculated on the mass of the lead charged into the mill, and in both cases ground to an average particle size of less than 60.mu., orb) to grinding in a manner known per se, preferably to an average particle size of less than 60.mu., then subjected to a heat-treatment at a temperature of 630.degree. to 700.degree. C.
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: January 25, 1994
    Assignee: Akkumulator es Szarazelemgvar
    Inventor: Jezsef Keri
  • Patent number: 5279464
    Abstract: Damaged or spent catalytic converters of the type having a metallic container for foil-shaped carriers of washcoats for catalysts of noble metal are recycled by admitting them into an impact pulverizer which forms a mixture of randomly distributed particles belonging to a first fraction containing dust-like particles of washcoats and catalyst or to a second fraction containing nonmagnetizable particles of containers and magnetizable particles of carriers. A high percentage of the first fraction is withdrawn from the pulverizer with an air stream which also entrains a percentage of the second fraction, primarily particles of carriers; such particles of carriers are separated from the stream in a first step and the particles of the first fraction are thereupon separated from the stream for admission into a collecting receptacle.
    Type: Grant
    Filed: January 11, 1993
    Date of Patent: January 18, 1994
    Assignee: EAR European Autocat Recycling GmbH
    Inventors: Heinz Giegerich, Clemens Hensel
  • Patent number: 5279465
    Abstract: A method and system for recycling waste materials enables the treatment of masses of waste including thermosetting plastics materials, high-melting thermoplastics materials, aluminum, wood, paper, fabrics, etc. The mass of waste is first subjected to a grinding process, preferably in two stages, to reduce it to a maximum particle size of the order of 10 mm. The granular material thus produced undergoes a heating and mixing process and is then reduced to sheet or strip form and simultaneously cooled in order to undergo a scraping or shaving process which leads to the formation of a mass substantially comparable to a powder with a particle size of between 50 and 1000 microns, including a certain quantity of fibres.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: January 18, 1994
    Inventor: Fernando Stroppiana
  • Patent number: 5275342
    Abstract: An improved apparatus for shredding, crushing and grinding solid waste materials to the desired particle sizes and shape for waste disposal or other uses is provided in which two unitary i.e. one-piece shredding members having a composite cutting teeth and tooth spacing arrangement in intermeshing shredding relationship mounted on substantially parallel shafts and are positioned in a transverse arrangement to the direction of waste material flow as it is introduced into the crushing apparatus. A shredding element of each shredding member interacts with an element of the other member whereby the shredding elements cooperatively interact on an inlet side of the apparatus. On an outlet or discharge side of the interacting members is positioned relative to a sizing means or screen useful for the passage of solid waste material particles of predetermined size and configuration, while simultaneously rejecting the passage of other improperly sized and shaped particles, for reprocessing through the apparatus.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: January 4, 1994
    Inventor: William B. Galanty
  • Patent number: 5269234
    Abstract: A method for utilizing landfill-prohibited solid hazardous waste material as an energy source in a cement kiln is provided. The method comprises obtaining landfill-prohibited solid hazardous waste materials suitable for use in a cement kiln, combining the solid waste materials with a liquid fuel in a milling apparatus to form a mixture, grinding the mixture in the milling apparatus in a manner reducing the particulate size of the solid hazardous waste material to form a fuel slurry, and delivering the fuel slurry directly into the flame of the cement kiln. The grinding of the solid hazardous waste material in the milling apparatus prior to its introduction into the kiln provides for a rapid and instantaneous ignition of the solid hazardous waste materials thereby not adversely affecting the forming clinker or the operating parameters of the kiln.
    Type: Grant
    Filed: October 20, 1992
    Date of Patent: December 14, 1993
    Assignee: Continental Cement Company
    Inventor: Ronald D. Powell
  • Patent number: 5269474
    Abstract: The invention concerns equipment for continuous chopping of municipal refuse and other solid wastes in general, consisting of: Section I: refuse collection subsystem, first compaction and conveyance to chopping section; Section II: subsystem for final compaction and chopping ribbon of refuse; Section III: subsystem for collection of chopped refuse and conveyance to landfill sites; Section IV: subsystem for collection and disposal of wastewaters. The equipment permits a ten-to fifteen-fold reduction in the initial volume of the refuse, together with a chopping operation which allows this volume to be maintained and to obtain refuse of a sufficiently uniform size prior to transportation or to disposal in landfill sites.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: December 14, 1993
    Inventors: Gianluigi Reis, Giorgio Massocco
  • Patent number: 5269472
    Abstract: A waste processing system in which containerized waste is received substantially at ground level and is conveyed to an elevator which carries the containerized waste to an upper level discharger which transports the containerized waste, dumps the containers down a drop chute and returns the empty containers to ground level. The dumped waste is shredded and is either injected into an incinerator or is discharged downwardly. The entire system is enclosed and can be maintained at either a negative or positive pressure for receiving radioactive or hazardous wastes, or at a reduced oxygen environment for receiving flammable hazardous waste. Containerized waste is received through air locks which include sliding doors that are supported entirely about the peripheries when sealed for purposes of explosion resistance. The injector discharge tube includes a slide box in which a pair of conduit segments are mounted and can be positioned such that one or the other of the segments is connected to the output conduit.
    Type: Grant
    Filed: May 26, 1992
    Date of Patent: December 14, 1993
    Inventor: Larry E. Koenig
  • Patent number: 5257741
    Abstract: An apparatus and method is disclosed for redeeming returnable containers inserted by a customer. Each returnable container has a longitudinal axis and uniform product code data on an external peripheral surface. The apparatus includes a conveying device for transporting individual containers from a first location for customer insertion to a second location for selective container ejection and a third location for selective container shredding. A spinning device imparts rotation to the individual containers while passing between the first and second locations, preferably causing the uniform product code data to travel in a helical path for multiple reads by a scanning device prior to reaching the second location. The scanning device sends an output signal to a central processing unit for processing in accordance with a control program stored in memory.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: November 2, 1993
    Inventors: Jerry A. Rode, Brian C. Rode
  • Patent number: 5257740
    Abstract: An apparatus and process for recycling scrap film. The apparatus includes a washer-shredder upstream from a film cutter in order to remove impurities from the film. The scrap film is rinsed in a rinse loop which uses screen sieves for removing additional impurities, particularly paper fiber. The apparatus and method substantially reduce conventional problems with the film cutter caused by impurities which customarily are present in unwashed film. The invention is particularly useful for recycling very thin scrap film.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: November 2, 1993
    Assignee: Andritz Sprout-Bauer, Inc.
    Inventors: Stanley R. Prew, Mark J. Seksinsky
  • Patent number: 5255859
    Abstract: Classifying and processing post-consumer plastic scrap materials for subsequent utilization. Post-consumer plastic scrap of various kinds, such as colored HDPE, natural HDPE, green PET and clear PET are separating into constituent fractions, and each fraction is separately reduced to flakes. At least some of the fractions are separately washed to remove fragments of labels or other foreign matter previously in place on the plastic bottles or other containers making up those scrap constituents.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: October 26, 1993
    Assignee: M. A. Industries, Inc.
    Inventors: Bobbie D. Peacock, Michael E. Stout, Jeffrey H. Greene, Jarl B. Lindroos, Clive E. Hardy, James R. Jacobs
  • Patent number: 5253971
    Abstract: A device for loading waste material into a refuse collection vehicle including a trough attached to a rear end of the vehicle. An inclined conveyor, having a lower end and an upper end, is disposed in the trough. An anchor is disposed at the lower end of the conveyor for holding a plastic bag containing waste material. The conveyor has slats with teeth for tearing open the plastic bag so that the waste material is emptied from the bag and then carried by the conveyor to the rear end of the vehicle. A hydraulic motor drives the conveyor, and a control bar is provided to activate and deactivate the hydraulic motor. A latch bar latches the control bar in a nondriving position wherein the hydraulic motor is deactivated.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: October 19, 1993
    Inventor: J. Keith Weinlader
  • Patent number: 5253813
    Abstract: A method and apparatus for reclaiming urethane foam and polyvinyl chloride plastic material from composite plastic articles (18). The articles pass through a granulator (23) and pass through a first elutriator (36) where two streams of particles are formed. A denser stream passes to a second elutriator (50) where at its exit (56) substantially pure polyvinyl chloride particles are passed into bin (58). A less dense stream of particles pass to a screen separator (64) where intermediately sized particles are sorted onto conveyor (74) which passes substantially pure urethane foam to baler (76).
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: October 19, 1993
    Assignee: Davidson Textron Inc.
    Inventors: Philip L. Belliveau, Samuel W. Pollard
  • Patent number: 5251827
    Abstract: A resin reinforced fibre product such as glass fibre impregnated with a thermosetting resin is treated to recover fibre by initially shredding the waste, pulverizing the shredded waste and sieving the pulverized waste to separate the free fibres. The remaining waste is milled to produce a fine powder suitable as a filler. The pulverizing is completed without classification and a portion of the pulverized product above a nominal cut size recampaigned. Free fibres are separated by an airlift during the sieving process.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: October 12, 1993
    Assignee: Phoenix Fibreglass Inc.
    Inventors: Bryan Sims, Craig A. Booth, V. I. Lakshmanan
  • Patent number: 5251825
    Abstract: A method and apparatus for comminuting and decontaminating discrete batches of waste material to reduce the volume, to render it unrecognizable and to render it safe for subsequent handling. The minimum volume of decontaminant fluid to be added to each batch is determined by its weight. Batches of differing weights are fed consecutively to the comminuting apparatus either manually or by a conveyor. A batch weigh scale is employed to preset a timer which controls the duration of operation of a device feeding decontaminant fluid to the batch. The feeding means can be made operable to withdraw reactive agents from separate storage means, to mix them to produce the decontaminant fluid and to feed the reacted mixture into the comminuting apparatus.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: October 12, 1993
    Assignee: Mediclean Technology, Inc.
    Inventors: Thomas J. Dumaine, John E. Kennett, Michael G. Kelly
  • Patent number: 5251828
    Abstract: A process and apparatus for receiving and reducing co-extruded car trim into chips and for separating the components of the chips into a metal fraction and a plastic fraction is provided; the chips are immersed in a heated liquid medium which subsequently separates the plastic from the metal with agitation and heat. The plastic and the metal are finally classified by their respective densities in a liquid upflow column.
    Type: Grant
    Filed: October 28, 1992
    Date of Patent: October 12, 1993
    Assignee: Mindis Metals, Inc.
    Inventors: James R. Jacobs, Michael R. Twomey
  • Patent number: 5252290
    Abstract: A process and apparatus are provided to treat and dispose of medical waste materials to thereby enhance public heath and social hygiene. The medical waste material is sealed in a suitable nonflammable and long infrared radiation pervious container. The container with the waste material therein is subject to long infrared radiation for a sufficient period of time to heat the waste material to sterilizing temperature levels. The container and the sterilized waste materials are then crushed to reduce the same to granular form to facilitate convenient and safe ultimate disposal. Thus, medical waste materials can be treated and rendered harmless immediately and safely at the place where they are created. Such on-site treatment minimizes the cost involved in ultimate disposal and the potential for human contact with dangerous pathogenic waste.
    Type: Grant
    Filed: November 30, 1989
    Date of Patent: October 12, 1993
    Inventor: Jun Uesugi
  • Patent number: 5251824
    Abstract: The invention concerns a process for the removal of foaming agents, especially CFCS, from foamed plastics, whereby the foamed plastic is first compressed and afterwards comminuted in an unit and the released foaming agents extracted.
    Type: Grant
    Filed: May 22, 1991
    Date of Patent: October 12, 1993
    Inventor: Waldemar Adelmann
  • Patent number: 5251832
    Abstract: A transportable facility for recycling waste plastics comprises at least one chipper, one storage hopper, and one extruder connected by constant-operation conveyors and integrated into components that are ready to either operate or move to another site. The components can be combined into an enclosed and modular production plant.
    Type: Grant
    Filed: February 27, 1992
    Date of Patent: October 12, 1993
    Assignee: REAL GmbH
    Inventor: Martin Hentschel
  • Patent number: 5248041
    Abstract: The invention relates to a process for separating off polyester plastics from a mixture of polyester, polyvinyl chloride and, if present, other plastics, wherein in the flotation the polyester remains as the residue and the polyvinyl chloride and, if present, other plastics are recovered in floated form, which comprises treating the mixture of plastics with an aqueous alkaline solution and separating off the polyester from polyvinyl chloride and, if present, other plastics by flotation.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: September 28, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gunther Deiringer, Gerhard Edelmann, Bernhard Rauxloh
  • Patent number: 5248102
    Abstract: A device for handling empty beverage containers, comprising a rotatable revolver-type barrel with a plurality of container receiving compartments therein, means for rotating said revolver-type barrel, inlet means for entering a container into a compartment, means for detecting characteristic features of said containers upon rotation of said revolver-type barrel, means for comparing said detected features with predetermined feature data and to provide control signals as a function thereof, and two or more outlet means for discharging a container based on said control signals. Further, the device has means cooperating with at least one of said outlet means for compacting or crushing a container leaving said outlet means. Said comparing means includes means for calculating and presenting a possible redemption value for said container.
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: September 28, 1993
    Assignee: Tomra Systems A/S
    Inventor: Torgrim Bohn
  • Patent number: 5248100
    Abstract: A rotor shearing type crusher for crushing municipal waste and industrial waste whether it is bulky or not. If any foreign material, which is impossible to crush, is mixed with the municipal waste or industrial waste, the foreign material is promptly discriminated and discharged separately. The crusher includes a casing, a feed plate and a cutter respectively rotatably mounted to the casing obliquely above two rotatable knives. The inclination of the feed plate and cutter can be changed freely. Cutouts rae provided on the top end of the feed plate and cutter in a comb-like manner to dodge cutting edges of the rotatable knives intersecting each other. A discharge port is divided into two sections. The crusher of such a construction performs a function of tearing off soft waste twining itself around the rotatable knives. Rigid material impossible to be crushed is separately discharged. Even dangerous small waste such as cartridges, cylinders, etc. can be crushed and degassed inside without fail.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: September 28, 1993
    Assignee: Kurimoto, Ltd.
    Inventor: Kazuaki Arakawa
  • Patent number: 5246174
    Abstract: A process and apparatus are provided for breaking the glass components of articles comprised of glass and nonglass components and liberating the glass components from the nonglass components by subjecting the articles to controlled vibrations sufficient to break the glass without breaking the nonglass components. The apparatus is a vibratory device having a screen deck and a plate deck. The screen deck has holes through which the broken glass falls to the plate deck. The nonglass components remain on the screen deck. Thereafter, the nonglass components are removed by one or more of a variety of means. The glass may be further processed by cleaning, rinsing and further crushing to size the glass pieces. Glass of different types may optionally be separated by taking advantage of the differences in specific gravities between glass types.
    Type: Grant
    Filed: December 8, 1992
    Date of Patent: September 21, 1993
    Assignee: Falcon United Ltd.
    Inventors: Edward A. Vitunac, Edward A. Zawadzki
  • Patent number: 5238195
    Abstract: A method for recycling wallboard employs a tumbling barrel for receiving wallboard pieces and metal weights. The tumbling barrel is sealed and the barrel is rotated so as to drop the weights against the wallboard. Once the materials are separated into gypsum and relatively large pieces of paper, the barrel doors are opened and the materials are transferred to a vibrating conveyor including a number of filtering screens for segregating the gypsum and the paper. Reclaimed gypsum from this process then may be mixed as a large portion of the total gypsum used in the manufacture of new wallboard.
    Type: Grant
    Filed: November 18, 1992
    Date of Patent: August 24, 1993
    Assignee: Knez Building Materials Company
    Inventor: John S. Knez, Jr.
  • Patent number: 5236136
    Abstract: A system and method for recycling used oil filters by shredding the filters to facilitate separation of the metal and nonmetal filter components and to release free oil trapped inside the filters, separating the metal and nonmetal filter components using combined magnetic and gravitational means, compressing the nonmetal filter components, and recovering the oil therefrom.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: August 17, 1993
    Assignee: Michael W. McCarty
    Inventors: Michael W. McCarty, James M. Taylor, Lloyd A. Baillie
  • Patent number: 5236133
    Abstract: This method is an improvement of an existing apparatus and method employed to remove paper or plastic film labels from plastic blow molded bottle scrap. Mechanical improvements have been made in two areas. The first area of improvement consists of the addition of multiple stages to the vertically mounted rotating blade assembly and cooperating multiple stationary elements within the stator assembly. The second area of improvement is within the air induction system and consists of improvements of the flow and control of the air stream which entrains the waste from the process mass. The method improvement of this invention results from the employment of these mechanical advancements.
    Type: Grant
    Filed: November 27, 1992
    Date of Patent: August 17, 1993
    Inventor: Lynn C. Lundquist
  • Patent number: 5232168
    Abstract: A method and apparatus for separating recyclable material from waste material in a material handling system. The material separator comprises a screw conveyor that separates waste material from recyclable material. The screw feeder also feeds the recyclable material into a crusher for pulverization. The waste material bypasses the crusher and is deposited onto a screen for removal into a waste bin. The crusher generally pulverizes the material received by the screw conveyor. However, if uncrushable material is dropped into the crusher assembly, a ballistic part ejector is provided for use with the crusher. The crusher apparatus has a housing and a rotary crusher member. The housing of the crusher apparatus includes convergent walls along one portion to direct ballistic or thrown uncrushable debris in a predetermined direction toward an ejector aperture formed in the housing. A closure member operably obstructs the ejector aperture in the housing.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: August 3, 1993
    Assignee: Engineered Systems, Inc.
    Inventors: G. Wayne Lybecker, Timothy P. Sherrow
  • Patent number: 5230473
    Abstract: A means for reclaiming standard carpet by disintegrating and separating carpet into its base component materials, through a process and apparatus that, through a series of mechanical, hydraulic, fluid, heat and pressure devices, separates and segregates carpet into its principal components, i.e., secondary backing, binder, pile and primary backing.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: July 27, 1993
    Inventors: James A. E. Hagguist, Robert M. Hume
  • Patent number: 5226757
    Abstract: The invention is a yard waste removal vehicle capable of being used to collect various types of yard waste. The vehicle includes a box-like hopper that is adapted to receive materials from a conveyer system, vacuum system, a side access door and a towed chipper machine. The interior of the hopper includes a movable partition that enables a segregation of the hopper's contents with a concomitant ability to separately dump the contents of each portion of the divided hopper.
    Type: Grant
    Filed: November 4, 1992
    Date of Patent: July 13, 1993
    Inventor: John W. Tarrant
  • Patent number: 5225137
    Abstract: In general, used thermoplastic liquid containers such as oil and solvent bottles are discarded. When recycling oil bottles, the usual practice is to wash the bottles with a solvent to remove oil therefrom. Washing of the bottles results in large quantities of used, oil-containing solvent, which present a disposal problem. A simple solution to the problem of recycling liquid containers with no preliminary washing or cleaning operation includes the steps of tumbling the bottles to promote liquid separation, shredding the bottles into small pieces and draining the liquid therefrom, grinding the pieces of plastic to yield a particulate thermoplastic, and mixing the particulate thermoplastic and any liquid remaining therein with an additive, e.g. an oil absorbent and a filler such as calcium carbonate, glass, mica or talc, and when the liquid is an oil, an absorbent to produce an extrudable mixture which can be used to form new containers.
    Type: Grant
    Filed: February 3, 1992
    Date of Patent: July 6, 1993
    Assignee: ABC Group
    Inventor: Changize Sadr
  • Patent number: 5217173
    Abstract: A waste processing system in which containerized waste is received substantially at ground level and is conveyed to an elevator which carries the containerized waste to an upper level discharger which transports the containerized waste, dumps the containers down a drop chute and returns the empty containers to ground level. The dumped waste is shredded and is either injected into an incinerator or is discharged downwardly. The entire system is enclosed and can be maintained at a negative pressure for receiving radioactive wastes, or at a reduced oxygen environment for receiving flammable hazardous waste. Containerized waste is received through air locks which include vertically sliding doors that are supported entirely about the peripheries when sealed for purposes of explosion resistance. The injector discharge tube includes a slide box in which a pair of conduit segments are mounted and can be positioned such that one or the other of the segments is connected to the output conduit.
    Type: Grant
    Filed: February 5, 1992
    Date of Patent: June 8, 1993
    Inventor: Larry E. Koenig
  • Patent number: 5217171
    Abstract: A method is taught for processing scrap of electromagnetic equipment containing precious, nonferrous and ferrous metals, plastics and ceramics to recover significant portions of the precious metals contained therein. The method involves mechanically crushing the scrap to produce a mechanical mixture of particles of the electromagnetic equipment. This mixture is then subjected to mechanical concentration by hydrocyclone and recleaning on a cleaning table thereby producing a rough concentrate of precious and nonferrous metals. This rough concentrate is in turn, subjected to magnetic separation and then hydrometallurgical processing whereby the nonferrous metals leach into solution thereby producing an enriched concentrate of precious and nonferrous metals in the solid sediment.
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: June 8, 1993
    Assignee: F&T Technology Corporation
    Inventor: Alexander V. Feldman
  • Patent number: 5215264
    Abstract: This invention pertains to an apparatus which facilitates the curb-side collection of recyclable waste products. It does so by incorporating a size reduction cutting or crushing head into a mobile unit designated primarily for truck mounting. The conveying and processing apparatus further provides a means whereby said recyclable waste products can be conveniently fed into the unit at a location, or multiple locations, convenient to an operator, or multiple operators, during said collection procedure. The apparatus provides the conveying and processing equipment necessary to move said recyclable material from the feed location to a size reduction cutter or crusher head mounted centrally to any such conveying components. Upon completion of the size reduction stage, the unit further provides the means of holding the processed recyclable material prior to its discharge at a collection facility.
    Type: Grant
    Filed: January 2, 1991
    Date of Patent: June 1, 1993
    Inventor: Lynn C. Lundquist