Cylinder External Patents (Class 209/219)
  • Patent number: 6467629
    Abstract: An apparatus for separating mixed particles divides the material to be sorted into constituent fractions comprising non-ferromagnetic particles of different electrical conductance. The particles are fed onto a conveyor, e.g. a conveyor belt that linearly moves the particles in a given direction. A rotating magnetic system is arranged below and/or above the conveyor belt. The rotary direction of the magnetic system is chosen so that the direction of movement of the surface of the magnetic system and the direction of movement of the surface of the conveyor belt are different. The fractions of non-ferromagnetic particles that are electrically charged to varying degrees are thereby divided between a plurality of collecting containers.
    Type: Grant
    Filed: March 3, 2001
    Date of Patent: October 22, 2002
    Inventor: Hurbertus Exner
  • Publication number: 20020144934
    Abstract: An apparatus for separating mixed particles divides the material to be sorted into constituent fractions comprising non-ferromagnetic particles of different electrical conductance. The particles are fed onto a conveyor, e.g. a conveyor belt that linearly moves the particles in a given direction. A rotating magnetic system is arranged below and/or above the conveyor belt. The rotary direction of the magnetic system is chosen so that the direction of movement of the surface of the magnetic system and the direction of movement of the surface of the conveyor belt are different. The fractions of non-ferromagnetic particles that are electrically charged to varying degrees are thereby divided between a plurality of collecting containers.
    Type: Application
    Filed: March 3, 2001
    Publication date: October 10, 2002
    Inventor: Hurbertus Exner
  • Publication number: 20020104783
    Abstract: In a method of the magnetic loading of a sintering material, magnetically susceptible sinterable substances of high magnetization and fine substances of slidable dropping at low speed are segregated in great amounts in an upper portion of a sintering material layer deposited on a pallet. More of magnetically susceptible sinterable substances such as mill scale, returned ore and the like of good magnetic attachment and fine substances of low drop speed are caused to be segregated in the upper portion of that layer. A magnetic force is applied to a starting sintering material, during movement of the latter having been facilitated in its particle size segregation on a sloping chute, by means of a cylindrical magnetic drum having built therein a permanent magnet and disposed downwardly of the sloping chute.
    Type: Application
    Filed: April 26, 2001
    Publication date: August 8, 2002
    Inventors: Nobuyuki Oyama, Kouichi Nushiro, Katsutoshi Igawa, Seiji Taguchi, Norifumi Fujii, Kenji Takihira, Rikio Ono, Takahiro Kumeda
  • Publication number: 20020029998
    Abstract: An eddy current separator apparatus for separating non-ferrous metals from other materials. The apparatus includes a support frame and a table cantileverly suspended from the frame. An expansion and contraction mechanism is incorporated that is adapted to accept a continuous conveyor belt thereabout. The expansion and contraction mechanism is capable of being configured between an operating configuration and maintenance configuration. A continuous conveyor belt is constructed to be able to be looped about the expansion and contraction mechanism and the table such that the conveyor belt is drawn tight in the operating configuration and slackened in the maintenance configuration. In this manner, the continuous conveyor belt is easily removable from, and installable onto the table in the maintenance configuration.
    Type: Application
    Filed: June 19, 2001
    Publication date: March 14, 2002
    Inventor: Billy R. Howell
  • Patent number: 6349833
    Abstract: In a method of the magnetic loading of a sintering material, magnetically susceptible sinterable substances of high magnetization and fine substances of slidable dropping at low speed are segregated in great amounts in an upper portion of a sintering material layer deposited on a pallet. More of magnetically susceptible sinterable substances such as mill scale, returned ore and the like of good magnetic attachment and fine substances of low drop speed are caused to be segregated in the upper portion of that layer. A magnetic force is applied to a starting sintering material, during movement of the latter having been facilitated in its particle size segregation on a sloping chute, by use of a cylindrical magnetic drum having built therein a permanent magnet and disposed downwardly of the sloping chute.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: February 26, 2002
    Assignee: Kawasaki Steel Corporation
    Inventors: Nobuyuki Oyama, Kouichi Nushiro, Katsutoshi Igawa, Seiji Taguchi, Norifumi Fujii, Kenji Takihira, Rikio Ono, Takahiro Kumeda
  • Publication number: 20020014440
    Abstract: An apparatus for sorting particles. The apparatus includes a magnet mechanism for separating the particles with a magnetic force. The apparatus includes an electric mechanism for separating particles with an electrical force disposed adjacent to the magnet mechanism. The apparatus includes a mechanism for providing the particles to the magnet mechanism and the electric mechanism. The providing mechanism is engaged with the magnet mechanism and the electric mechanism. A method for sorting particles. The method includes the steps of providing the particles to a magnet mechanism and electric mechanism disposed adjacent to the magnet mechanism. Then there is the step of separating the particles with the magnetic force from the magnet mechanism and the electric force from the electric mechanism.
    Type: Application
    Filed: July 18, 2001
    Publication date: February 7, 2002
    Applicant: EXPORTech Company, Inc.
    Inventors: Robin R. Oder, Russell E. Jamison
  • Patent number: 6338903
    Abstract: A semiconductor encapsulating resin composition which is powdery particles of a resin composition comprising an epoxy resin, a curing agent and an inorganic filler, and produced through a series of unit operations inclusive of melt-kneading and pulverization of a raw material mixture, wherein foreign metal having magnetic property originating from metal materials constituting production apparatuses used in the unit operations and contained in the powdery particles are selectively recovered and removed by a drum type metal classification-recovering apparatus. This semiconductor encapsulating resin composition provides a high reliability semiconductor device not containing magnetic foreign metal.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: January 15, 2002
    Assignee: Fujitsu Limited
    Inventors: Yukio Takigawa, Ei Yano
  • Patent number: 6330946
    Abstract: Apparatus for separating particles such as minerals from a mixture including said particles. The apparatus includes means for generating a rotating magnetic field such as a rotating magnetic drum (71). The apparatus also includes means for exposing the mixture to the rotating magnetic field such that susceptible particles are caused to rotate, and means for exploiting the rotation imparted to the susceptible particles to separate the particles from the mixture. The means for exposing may include a conveyor belt (72) or the like for passing the mixture along a first path (70) relative to the rotating magnetic field. The means for exploiting may include a surface (74) for facilitating movement of the particles along a second path (A) other than the first path.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: December 18, 2001
    Assignee: KA PTY Ltd.
    Inventor: Neil Robert Allen
  • Patent number: 6302275
    Abstract: A tracking system employs a strip of readily magnetizable material adhered to at least one edge of a conveyor belt used with a magnetic roll separator. The magnetic field produced by the head roller of the conveyor belt produces a continuous centering force which acts on the easily magnetized material providing proper tracking for the conveyor belt. The readily magnetizable material can be attached directly to either surface of the belt, have an edge portion of the belt wrapped around it or, in the form of a woven wire mesh, have the belt integrated into it by vulcanization. The strip of material may be continuous or intermittent.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: October 16, 2001
    Assignee: Erie E Magnetics
    Inventors: Timothy Guy Shuttleworth, David Scott Bard, Richard Scott Darling
  • Patent number: 6250474
    Abstract: An eddy current separator apparatus for separating non-ferrous metals from other materials. The apparatus includes a support frame and a table cantileverly suspended from the frame. An expansion and contraction mechanism is incorporated that is adapted to accept a continuous conveyor belt thereabout. The expansion and contraction mechanism is capable of being configured between an operating configuration and maintenance configuration. A continuous conveyor belt is constructed to be able to be looped about the expansion and contraction mechanism and the table such that the conveyor belt is drawn tight in the operating configuration and slackened in the maintenance configuration. In this manner, the continuous conveyor belt is easily removable from, and installable onto the table in the maintenance configuration.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: June 26, 2001
    Inventor: Billy R. Howell
  • Patent number: 6230897
    Abstract: An apparatus for separating mixed particles divides the material to be sorted into constituent fractions comprising non-ferromagnetic particles of different electrical conductance. The particles are fed onto a conveyor, e.g. a conveyor belt which linearly moves the particles in a given direction. A rotating magnetic system is arranged below and/or above the conveyor belt. The rotary direction of the magnetic system is chosen so that the direction of movement of the surface of the magnetic system and the direction of movement of the surface of the conveyor belt are different. The fractions of non-ferromagnetic particles which are electrically charged to varying degrees, are thereby divided between a plurality of collecting containers.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: May 15, 2001
    Inventor: Hubertus Exner
  • Patent number: 6222450
    Abstract: A support assembly for a metal detection device is disclosed. The detection device includes a housing with a central orifice, an induction member surrounding the orifice for generating an output voltage when a metal object is passed nearby, and a mechanism which includes pulse emitting and pulse receiving members for selectively sensing an object passing through the orifice. The support assembly includes a base member having front, rear and opposed side portions sized and shaped for positioning beneath the housing. The base member has a central aperture adapted for substantial alignment with the housing orifice when the base member is positioned beneath the housing. A mechanism secures the base member to the housing, and a plurality of mounting posts are disposed along the base member front, rear and side portions for positioning a metal detection device induction member about the central aperture.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: April 24, 2001
    Assignee: Denver Dynamics, Inc.
    Inventor: Philip E. Clements
  • Patent number: 6119922
    Abstract: A method for making mineral insulated cables in which a mineral powder is purified to remove magnetic particles. The purified mineral powder and at least one wire are fed into a seam-welded metal sheath as it is being formed to produce the mineral insulated cable. The mineral insulated cable may then be drawn and annealed to reduce the diameter of the cable to the desired size.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: September 19, 2000
    Assignee: Hoskins Manufacturing Company
    Inventor: Bertie Forrest Hall, Jr.
  • Patent number: 6068133
    Abstract: A system for separating non-magnetizable metals from a mixture of solid with a feed device; an endless conveyor belt with belt drums supported on a frame, of which the head drum at the discharge end is provided with a driven, eccentrically mounted and adjustable magnet rotor; and a separation area downstream of the head drum. To improve the degree of separation achieved, the system is provided with a vibrating channel (2) with an additional slope; means for adjusting the speed of the conveyor belt (3); means for generating a variable force of repulsion (Fvar); a controlled rotational speed adjustment unit (nvar) for the magnet rotor (3.4); and adjustable separating elements (4.1, 4.2, 4.3), each of which is located between two adjacent throwing parabolas of the separated fractions.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: May 30, 2000
    Assignee: Steinert Elecktromagnetbau GmbH
    Inventors: Joachim Schonfeld, Erwin Kaldenbach, Eberhard Stodt, Elmar Klomfass, Reyk Buch, Jurgen Dillmann, Willi Schneider
  • Patent number: 6062393
    Abstract: A process and an apparatus for separating particles according to the strength of their magnetic susceptibilities includes a mass of loose particles transported on a moving surface over a plurality of long, thin, magnets separated by thin straps of ferromagnetic metal. The magnets are arranged such that the polarities of two adjacent magnets engaging opposite sides of the same ferromagnetic strap are identical. Particles are separated on the moving surface and when that surface passes around a horizontal axis, the particles fall off the surface into selected areas according to the magnetic susceptibilities of the particles. Cooling air flows between the moving surface and magnets to enhance operation and the useful life of the magnets.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: May 16, 2000
    Assignee: Carpco, Inc.
    Inventors: Frank S. Knoll, Adrian Perregaux, Joseph Boehm
  • Patent number: 6041942
    Abstract: An improved magnet configuration of the magnet field generated by the magnetic roller in a magnetic separator to increase the separation capability of magnetic separators includes disc shaped magnets forming a magnetic roller beneath a Kevlar.TM. belt upon which withdrawn catalyst is placed. Catalyst particles having paramagnetic and/or ferromagnetic properties are attracted to the belt because of the influence of the magnetic field. Particles not having ferromagnetic and/or paramagnetic properties are carried further by momentum than those with the ferromagnetic and/or paramagnetic properties. The magnetic roller provides a concentrated magnetic field by placing a series of disc magnets arranged so that like poles face each other with spacers placed between the magnets. In this stacked configuration the magnetic field strength is doubled, which permits a greater range of operation of the speed at which the belt may be operated.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: March 28, 2000
    Assignee: Kellogg Brown & Root, Inc.
    Inventor: Terry L. Goolsby
  • Patent number: 5931308
    Abstract: An eddy current separator (10,10a,10b,10c,10d, 10e,10f,10g) and a separation method for separating non-ferromagnetic particles (14) by engaging the particles from above by a distal end (50) of an inclined engagement member (42, 42', 42") to force the particles into a primary magnetic field (34) below a conveyor surface (28) to increase the induced eddy current flow that generates particle magnetic fields such that subsequent release of the particles allows increased magnetic field propulsion to propel the particles distances that vary according to their electrical resistance, densities, shapes and sizes.
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: August 3, 1999
    Assignee: Huron Valley Steel Corporation
    Inventors: Adam J. Gesing, Kevin W. DeHetre, Tommy Cranford, James E. Noe
  • Patent number: 5887728
    Abstract: A mixture of electronic component chips 2 and media 3 is placed in a planar state on a transport surface 4 of a conveyor 5. Only the media 3 are collected onto a first circulating circumferential surface 18 by a magnetic force provided by a first collection member 12 and are thereafter collected by a media collecting box 22. Then, only electronic component chips 2 having a plating film of a proper thickness formed thereon are attracted onto a second circumferential surface 28 by a magnetic force provided by a second collection member 23 and are thereafter collected by a good product collecting box 31. Electronic component chips 2a having a plating film of an insufficient thickness formed thereon are collected by a defective product collecting box 32.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: March 30, 1999
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yuji Muranaka, Shigeo Yaichi
  • Patent number: 5860532
    Abstract: A material separator separates non-magnetic particulate material into components having differing electrical conductivities and comprises a support frame, a drum rotatably journaled with respect to the support frame, a magnetic assembly in the drum interior and a drive system. The drum's sidewall is cylindrically shaped and the magnetic assembly incudes longitudinally extending magnetic arrays, each angularly spaced from one another and rotatably journaled on a respective array axis that is radially spaced from the drum axis. The magnetic arrays include opposite magnetic poles located along a rotational surface such that when they rotate, an oscillating magnetic field is induced through the drum's sidewall. The drive system rotates the magnetic arrays and the drum so that particulate material placed on an outer surface of the drum sidewall is subjected to the oscillating magnetic field whereby components having different electrical conductivities are discharged with differing discharge trajectories.
    Type: Grant
    Filed: November 8, 1996
    Date of Patent: January 19, 1999
    Inventor: Bo R. Arvidson
  • Patent number: 5810407
    Abstract: A shovel includes a handle and a blade in which a central portion of the blade contains a plurality of perforations. The perforations are in an array of rows and columns and the rows extend in a direction perpendicular to the handle. The perforations are elongated and have a length in a direction approximately perpendicular to the handle. The perforations in adjoining columns and rows are interleaved a predetermined amount and the total area of the perforations is about one-half the area of the central portion. The blade is made from a single sheet of steel that is punched and bent into a compound shape to provide a rigid basket for retaining material. The perforated area is relatively flat, extends to the front edge of the blade, and can be reinforced with ridges that are formed when the sheet is bent. The front edge is reinforced by rolling the edge out of the plane of the central portion.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: September 22, 1998
    Assignee: Jacob Lloyd Neet dba Shrake Brand Tools
    Inventors: James R. Melendez, Jacob Lloyd Neet
  • Patent number: 5668518
    Abstract: A wire wound drum using a magnetic element having a non-magnetic shell and a matrix material bonded to the shell and made up of a non-magnetic wire and a magnetic wire wound on the shell in bobbin fashion single layer alternate magnetic and non-magnetic wires having the outer diameter of the wire machined down to the center line of the wire wrap to produce a flat surface.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: September 16, 1997
    Assignee: Eriez Manufacturing Company
    Inventor: Marshall A. Carner
  • Patent number: 5655664
    Abstract: The disclosed eddy-current separator has several new features. One includes a magnet assembly which is metal-sleeved for protecting the magnets from impact by particles or objects piercing the waste-carrying conveyor belt with which the separator is used. A low-rotating-speed epoxy-layered shell surrounds the sleeve for additional protection. A conveying extension carries ferrous "fines" from the conveyor into the receptacle used to collect waste from which non-ferrous material has been separated. Such extension permits such fines to be under the substantial influence of the magnet assembly over an arc well less than 180.degree.. The conveyor belt uses relatively-closely-spaced cleats of reduced height to reduce the "loading" of an individual cleat with potentially-piercing ferrous fines. A two pole magnet assembly may be used and/or a magnet assembly in which the magnet pole faces are curved for air gap reduction.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: August 12, 1997
    Assignee: Venturedyne, Ltd.
    Inventor: William T. Barrett
  • Patent number: 5636747
    Abstract: Optimized utilization of combinations of fluid catalyst magnetic separator, classifier, and/or attriter can be used to achieve lower catalyst cost, and better catalyst activity and selectivity through control of metal-on-catalyst, particle size and particle size distribution. This process is especially useful when processing high metal-containing feedstocks. This provides a catalyst recovery unit (RCU.TM.) ancillary to an FCC or similar unit.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: June 10, 1997
    Assignee: Ashland Inc.
    Inventors: William P. Hettinger, Jr., Howard F. Moore, Terry L. Goolsby, A. V. Peppard
  • Patent number: 5626233
    Abstract: The disclosed eddy-current separator has several new features. One includes a magnet assembly which is metal-sleeved for protecting the magnets from impact by particles or objects piercing the waste-carrying conveyor belt with which the separator is used. A low-rotating-speed epoxy-layered shell surrounds the sleeve for additional protection. A conveying extension carries ferrous "fines" from the conveyor into the receptacle used to collect waste from which non-ferrous material has been separated. Such extension permits such fines to be under the substantial influence of the magnet assembly over an arc well less than 180.degree.. The conveyor belt uses relatively-closely-spaced cleats of reduced height to reduce the "loading" of an individual cleat with potentially-piercing ferrous fines. A two pole magnet assembly may be used and/or a magnet assembly in which the magnet pole faces are curved for air gap reduction.
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: May 6, 1997
    Assignee: Venturedyne, Ltd.
    Inventor: Rano R. Wells, II
  • Patent number: 5615775
    Abstract: A magnetic separator having a chassis, a rotor and a return roll supported on the chassis, the rotor and return roll having axes extending parallel to each other, and an endless band trained over the rotor and return roll, the endless band having an upper course and a lower course, the chassis being constituted by a beam positioned between the upper and lower course of the endless band. A frame supports opposite ends of the beam projecting from the opposite sides of the endless band at a plane of support, one of the beam ends being rigidly fixed on the frame, and a removable shim is positioned at the level of the lower course of the endless band adjacent the plane of support, the removable shim supporting the beam end opposite the one beam end on the frame whereby the beam is cantilevered on the frame when the shim is removed and a space is defined between the opposite beam end and the frame, the space permitting the endless band to be dismounted from, and mounted on, the rotor and return roll.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: April 1, 1997
    Assignee: FCB
    Inventor: Pascal Barbaret
  • Patent number: 5494172
    Abstract: A magnetic repulsion assembly for separating copper particles from zinc particles, the assembly including a magnetic pulley having a radially decreasing flux density field surrounding the pulley, a belt wrapped around the magnetic pulley for supporting the particles and a resilient pulley mounted in close proximity to the magnetic pulley whereby the copper particles will be rotated into engagement with the surface of the resilient pulley and thrown outwardly therefrom at a greater trajectory than the zinc particles.
    Type: Grant
    Filed: May 12, 1994
    Date of Patent: February 27, 1996
    Assignee: Miller Compressing Company
    Inventor: Leonard E. Siesco, Jr.
  • Patent number: 5394991
    Abstract: A conductive material sorting device includes a belt conveyer for supplying materials to be sorted, a roller wound with the belt conveyer, a magnet rotor inserted into the roller to be arranged at a portion of the roller wound with the belt conveyer and having a magnet arranged to alternate N and S poles with each other, and a drive device for rotationally driving the magnet rotor in the same direction as the roller and in the revere direction. An alternating magnetic field is generated by the rotation of the magnet rotor making it possible to send away conductive materials contained in the materials to be sorted along the most distant locus due to the repulsive force of a magnetic field caused by the eddy current generated in the conductive materials accompanying the generation of the alternating field.
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: March 7, 1995
    Assignees: Toyota Tsusho Corporation, Toyota Metal Co., Ltd., Senko Kogyo Co., Ltd.
    Inventors: Masakatsu Kumagai, Yoshihisa Fujita
  • Patent number: 5330048
    Abstract: A controlled access mixing vial (2) includes a cylindrical mixing container (8) having a fixed septum (14) at its outer end (10) and a breachable seal (22) at its inner end (12). A first pharmaceutical (52) is housed within the mixing container between the seal and the septum. A supplemental container (4) is coaxially translatably mounted to the mixing container and contains a second pharmaceutical (50) between the mixing and supplemental containers. Collapsing the mixing and supplemental containers from a pre-mixed condition to a post-mixed condition, preferably with a chosen rotary movement (128, 130) using threads (60, 62), causes the breachable seal to open permitting the second pharmaceutical to be driven into the mixing container. Movement to the post-mixed condition dislodges a safety shield (100) to permit access to the septum. Rotary locks (116, 118, 120) limit movement from the pre-mixed condition except with the chosen rotary movement and prevents all movement from the post-mixed condition.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: July 19, 1994
    Assignee: Habley Medical Technology Corporation
    Inventors: Terry M. Haber, William H. Smedley, Clark B. Foster
  • 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: 5207330
    Abstract: A magnetic repulsion separator for separating a mixture of discrete particles having various electroconductivity characteristics, the separator including a main shaft, a pair of main bearings for supporting the shaft, a hollow rotor mounted on the shaft and having an even number of axially aligned notches around the outer perimeter thereof, a row of permanent magnets in each of the notches, each alternate row of magnets having opposite polarity, an outer nonmagnetic shell mounted for rotary motion on the main shaft and encircling the hollow rotor for carrying the discrete particles of material and a nonmagnetic mesh wrapped around the rows of magnets with a nonmagnetic adhesive provided in the spaces between the rows of the magnets.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: May 4, 1993
    Assignee: Miller Compressing Company
    Inventor: Leonard E. Siesco, Jr.
  • Patent number: 5170891
    Abstract: The improved self-cleaning magnetic separator includes a tube and a conveying flight spiralled about the tube. The separator has a magnetic material collecting portion, a magnetic material discharge portion and a bar-like magnet providing a lobe-like magnetic field. The field is of generally uniform strength along the material collecting portion and diminishes in strength along the discharge portion. In a highly preferred arrangement, the magnet is stationary and the tube and flight rotate with respect to it. Because the magnetic material is "trapped" by the stationary field, such rotation causes the magnetic material to be urged by the flight from the collecting portion to the discharge portion. The field, of diminished strength in the discharge portion, permits magnetic material to fall away from the discharge portion.
    Type: Grant
    Filed: September 20, 1991
    Date of Patent: December 15, 1992
    Assignee: Venturedyne Limited
    Inventor: William T. Barrett
  • Patent number: 5101980
    Abstract: A material separator for separating non-magnetic components from magnetic components in a material is provided. The material separator has a support frame, a magnetic roller, an idler roller and a conveyor belt. The idler roller is rotatably mounted on an inclined slideway so that tension on the conveyor belt is maintained by the weight of the idler axle and idler roller. The inclined slideways may be provided by pivot arms and adjusting elements are provided to adjust the angles of inclination to the horizontal, thereby allowing adjustability of the belt tension. Detectors monitor the tracking path of the belt so that an adjustment to the angle of inclination of one of the slideways automatically corrects deviations from the tracking path. The magnetic separator is preferably a modular unit mountable in framework having an upstream feed assembly and a downstream collection assembly, either in single or multi-stage separator apparatus.
    Type: Grant
    Filed: October 11, 1990
    Date of Patent: April 7, 1992
    Inventor: Bo R. Arvidson
  • Patent number: 5092986
    Abstract: A magnetic separator is provided in which a conveyor belt is conducted over a belt drum to transport relatively electrically conductive particles. A magnetic system consisting of permanent magnets or electromagnets is rotated at a high speed at an eccentric location within the belt drum so that an air gap between the outer surface of the magnet system and the inner surface of the belt drum is not constant. As a result, the magnetic lines of force lose their influence on an iron particle coming between the belt drum and the conveyor belt. These iron particles can be removed from the belt drum or the conveyor belt by scrapers to avoid damage to the belt drum.
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: March 3, 1992
    Assignee: Steinert Elektromagnetbau GmbH
    Inventors: Klaus Feistner, Gerd Fassbender
  • Patent number: 5080234
    Abstract: The eddy current separator apparatus disclosed herein employs first and second cylinders, each of which is provided with means for generating a circumferential series of radially directed magnetic poles of alternating polarity. The cylinders are mounted for rotation around parallel axes with an essentially vertical gap between them. A mixture of electrically conductive and non-conductive particles can be fed into the gap from one side. The cylinders are rotated synchronously in opposite directions with poles of opposite polarity facing across the gap, at a speed substantially higher than the speed of mixture feed. Electrically conductive non-magnetic particles are impelled by eddy currents generated by the magnetic flux projected across the gap by the faacing moving poles and can be received or collected separately from free falling non-conductive particles.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: January 14, 1992
    Assignee: Walker Magnetics Group, Inc.
    Inventor: William H. Benson
  • Patent number: 5057210
    Abstract: The operation of an apparatus for separating non-magnetizable metals, in particular non-ferrous metals, from a solid mixture by means of an alternating magnetic field is improved and the construction of the apparatus simplified by arranging the magnetic field generator adjacent to a straight, curved or bent slideway of a material of poor electrical conductivity.
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: October 15, 1991
    Assignee: Lindemann Maschinenfabrik GmbH
    Inventor: Jorg Julius
  • Patent number: 4883584
    Abstract: A process for separating special steel components from lump shredder scrap includes first removing the ferromagnetic content from the shredder scrap and thereafter dividing the shredder scrap into a normal size fraction and an undersize fraction. The undersize fraction is then treated by separating the special steel content from the undersize fraction by a magnetic drum having a field strength above 0.2 tesla.
    Type: Grant
    Filed: October 27, 1987
    Date of Patent: November 28, 1989
    Assignee: Metallgesellschaft AG
    Inventors: Hans-Peter Sattler, Bernd Nichtweiss
  • Patent number: 4851129
    Abstract: A process for treating effluents contaiing cyanide from mining operations wherein magnetic separation is used prior to treatment with hydrogen peroxide.
    Type: Grant
    Filed: April 19, 1988
    Date of Patent: July 25, 1989
    Assignee: Degussa Aktiengesellschaft
    Inventors: Andrew Griffiths, Roy Norcross
  • Patent number: 4834871
    Abstract: A magnetic separator comprising a rotatable drum including an axis of rotation and a periphery comprising a plurality of magnet blocks. The magnet blocks are mounted and arranged as circular rings about the axis of rotation. The ith magnet block is magnetized in a predetermined direction defined by .psi..sub.i =-n.rho..sub.i where n is a positive number and .phi..sub.i is an angle described by a line from the center of gravity of the ith block to the axis of rotation and a predetermine radius vector. The spacing between neighboring centers of gravity of the magnetic blocks, expressed as a sector angle, is smaller than or equal to about .pi./2 (n+1).
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: May 30, 1989
    Assignee: KHD Humboldt Wedag AG
    Inventors: Hans G. Schnabel, Karl-Heinz Unkelbach, Marlene Marinescu, Nicolae Marinescu
  • Patent number: 4831940
    Abstract: The invention relates to a system for separating metals and ashes from the residue remaining after incineration by positioning a magnetic drum between six (6) and twelve (12) inches from the conveyor transporting said residue to result in the maximum amount of reclaimed metal.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: May 23, 1989
    Inventor: Frank Franza
  • Patent number: 4728419
    Abstract: The invention provides a magnet roll for separation purposes which is made up of a number of axially disposed substantially cylindrical permanent magnets each of which constitutes a segment of the roll. Adjacent segment ends in the roll are of like polarity with pole pieces being defined between the segments. The pole pieces preferably comprise a laminate of two wafer-like discs of no more than 1.5 mm thickness. The pole pieces preferably have flanges projecting beyond the exposed surfaces of the segments to define peripheral extremities which form ridges of frusto-triangular sections. In the preferred arrangments the wafer-like discs are mounted back-to-back with each disc providing half the frusto-triangular profile of a ridge. Preferably the discs include recesses which snugly accommodate the ends of the permanent magnet segments.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: March 1, 1988
    Inventor: Bronislaw Grun
  • Patent number: 4686035
    Abstract: A separator with a magnetic drum which rotates through a well-defined liquid flow path to separate magnetic particles from liquid delivered to the flow path by way of a trough. A weir extends between the trough and the drum to define a gap at the entry end of the flow path. The weir is hinged to swing downwardly and upwardly to automatically increase and decrease the width of the gap when the incoming flow rate increases and decreases, respectively, the weir thus acting to maintain the liquid level in the trough substantially constant at various incoming flow rates. The trough is shaped to spread the incoming liquid across the length of the drum in a streamlined manner. The housing of the separator is of a fabricated construction enabling easy removal and replacement of an arcuate apron which coacts with the drum and the housing to define the flow path.
    Type: Grant
    Filed: July 24, 1985
    Date of Patent: August 11, 1987
    Assignee: Barnes Drill Co.
    Inventor: Mark R. Estabrook
  • Patent number: 4557387
    Abstract: A magnetic drum for separating ferrous and non-ferrous beverage containers having a plastic drum which rotates around a series of permanent magnets mounted on a structural support. The plastic drum has an inner cylindrical portion coupled to a power roller which induces rotational movement in the plastic drum. An input chute funnels ferrous and non-ferrous crushed beverage containers onto the outer cylindrical portion of the plastic drum such that crushed ferrous beverage containers are held against the outer cylindrical portion and traverse a predetermined distance around the circumference of the outer cylindrical portion until they are no longer within the influence of the magnetic force field produced by the permanent magnets mounted between the outer cylindrical portion and inner cylindrical portion of the plastic drum.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: December 10, 1985
    Assignee: Adolph Coors Company
    Inventor: Robert L. Frenkel
  • Patent number: 4539102
    Abstract: A method and apparatus are disclosed for removing and counting artificial drill cuttings from a returning drill mud containing a mixture of both artificial and natural drill cuttings. The artificial drill cuttings are injected into the drilling fluid and supplied to a drill string and have magnetic properties, while the natural drill cuttings do not. A rotary magnetic drum having a first endless belt travelling therearound receives the cuttings mixture and the magnetic artificial cuttings adhere to the first belt by being attracted to the drum, while the natural drill cuttings do not, thereby permitting separation of the two. The artificial cuttings are removed from the drum by a second endless belt cooperating with the first endless belt to define a nip between them. The belts positively engage with and remove the artificial cuttings from the drum.
    Type: Grant
    Filed: November 9, 1983
    Date of Patent: September 3, 1985
    Assignee: Mobil Oil Corporation
    Inventors: William G. Boston, Robert T. Strong
  • Patent number: 4494657
    Abstract: An integral housing member for removing magnetic articles from a flow of loosely packed material containing a mixture of magnetic articles and non-magnetic articles is shown. The integral housing member includes an inlet cover having an elongated opening, a hollowed-out central area and an opening located at the bottom of the integral housing member which terminates in a rim engaging lip having substantially the same diameter as the top opening of the trash receptacle. A magnetic article assembly is positioned below the elongated opening and is adapted to be rotated about the longitudinal axis of an elongated support shaft. The magnetic article assembly includes a plurality of triangular shaped metal plates, magnetic members and non-magnetic members, all of which have an aperture formed in the center thereof which has the elongated support shaft passed therethrough.
    Type: Grant
    Filed: December 17, 1982
    Date of Patent: January 22, 1985
    Inventor: Jerry Oldenkamp
  • Patent number: 4478152
    Abstract: A railroad scrap pick up machine includes a magnetic wheel and transversely extending support arm or beam which pivots in a plane transverse to the right and left sides of the machine. The magnetic wheel may alternately be mounted on the left or right side of the machine for picking up loose tie plates disposed on the railroad bed. The single magnetic wheel which is used for picking up tie plates may be removed and a support arm having two magnetic wheels for picking up spikes may be attached at either the right or left side of the machine. Stripper trays are used for separating metallic articles from the magnetic wheels. Crawlers which may slide from left to right on the machine are used to support the machine when traveling on a roadbed having only one rail.
    Type: Grant
    Filed: December 2, 1982
    Date of Patent: October 23, 1984
    Assignee: Holley Engineering Company, Inc.
    Inventor: John D. Holley
  • Patent number: 4373435
    Abstract: A can and bottle crusher and separator with stationary and oscillating tooth jaw plates confronting each other and converging with each other in a downward direction and dropping crushed glass and metal containers into the discharge chute. A glass discharging port in the bottom of the discharge chute directs glass particles directly into a collecting barrel. A gate is provided to alternately close the chute or to close the glass discharge port. The chute has a separating wheel at its bottom end to initially stop and then propel aluminum cans over the top of it. The wheel has magnetic belts to carry steel containers around with the wheel until they are stripped off and dropped into an appropriate barrel.
    Type: Grant
    Filed: January 5, 1981
    Date of Patent: February 15, 1983
    Inventor: John J. Grevich
  • Patent number: 4370225
    Abstract: This invention relates to improvements in a dry magnetic separation system for increasing the recovery of magnetic ore from the feed material. The system includes a separator which has a magnetic head-pulley assembly mounted in one end of an endless belt conveyor loop. When the conveyor is run at high speeds some of the ore is thrown off the head-end of the belt instead of being retained on it by the magnetic pulley. Those ore particles that are retained are carried onto the lower flight of the belt from which they are dropped into an ore chute. To recover the magnetic portion of the "thrown" ore, an adjustable splitter is located outwardly of the pulley-head at a lower elevation than the belt. The splitter also directs these partially magnetic particles into the ore chute and the non-magnetics to a tailings chute.
    Type: Grant
    Filed: August 24, 1981
    Date of Patent: January 25, 1983
    Assignee: United States Steel Corporation
    Inventors: John P. Bingel, Robert W. Salmi
  • Patent number: 4345995
    Abstract: A machine to separate magnetically susceptible particles from a particulate diamagnetic gangue in a batch type process especially as in ore benefication. A frame pivotally mounts a normally horizontally oriented processing pan that tilts to allow dumping of gangue. A cradle-like spindle plate support having two perpendicularly related rectangular spindle plates is pivotably mounted on the frame above the ore pan so that each spindle plate may be pivotably moved to service one-half of the ore pan. Each spindle plate carries a plurality of spacedly arrayed, perpendicularly oriented, eccentrically rotatable magnetic spindles that may be moved to an operative position within the processing pan. Leveling mechanism is provided to level ore within the pan and vibrators are associated with the pan to agitate particulate matter therein during processing.
    Type: Grant
    Filed: February 20, 1981
    Date of Patent: August 24, 1982
    Inventor: James H. Ahrendt
  • Patent number: 4296865
    Abstract: A magnetic separator having two rotating magnetic drums of opposite polarity which form between them a working air-gap, and having directionally magnetized block magnets on each side of both end-faces of the magnetic drums in a closed magnetic circuit, the magnets being connected together on one side of their poles, in pairs with unlike poles, by means of soft-iron parts, and being provided, on the other side, with pole shoes in which are mounted soft-iron parts designed as axes, the drums each being arranged in a housing comprising slide plates which are located in the working air-gap and which converge at the inlet and diverge at the outlet, the said drums comprising axial grooves distributed radially around their peripheries, or having peripheries of star-shaped cross section.
    Type: Grant
    Filed: March 19, 1979
    Date of Patent: October 27, 1981
    Inventor: Heinrich Spodig
  • Patent number: 4293410
    Abstract: The magnetic filter has a magnetic cylinder (2) pivotally mounted in a housing (1) and having an inclined stripper (14). The bottom of the cylinder (2) is surrounded by a casing (5), whereby a flow channel (6) for the medium to be filtered is created between the cylinder (2) and the casing (5). One portion (5b) of the casing (5) can be mobile so that the flow-channel profile section can be changed. Decreasing the channel profile section causes an increase in the flow resistance, resulting in a backwash, so that even in cases of small quantities the level and hence the inflow characteristic of the filter is approximately the same as that of the full-load quantity.
    Type: Grant
    Filed: September 13, 1979
    Date of Patent: October 6, 1981
    Assignee: Hans Streuli AG
    Inventors: Hans Streuli, Joseph Ruedi