By Permanent Magnets Only Patents (Class 104/283)
  • Patent number: 9604547
    Abstract: The present invention relates to a vehicle for a magnetic levitation track having a coach body (1) and a propulsion and supporting device (4) as well as at least one levitation frame (2) fastened on the coach body (1) and the propulsion and supporting device (4). The levitation frame (2) can be deflected transversely to the longitudinal axis of the propulsion and supporting device (4) and a spring suspension system (12, 14, 20, 21) is arranged between the levitation frame (2) and propulsion and supporting device (4). The levitation frame (2) has a traverse (13) and a carrier (17) which are connected to each other in an articulated fashion.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: March 28, 2017
    Assignee: Max Bögl Bauuntemehmung GmbH & Co. KG
    Inventor: Stefan Bögl
  • Patent number: 9496761
    Abstract: A motor may include a stationary section and a rotating section. The stationary section may include a stator core having a plurality of teeth and a coil including a conducting wire wound around each tooth. The rotating section may include a plurality of magnets arranged radially inside the coil, a rotor core, and a magnet holder holding the magnets. Each magnet may have a circumferential end face at each of both end portions in the circumferential direction. The magnet holder may include a columnar portion axially extending between adjacent magnets, and a wall surface spreading in the circumferential direction from the columnar portion. The wall surface may come into contact with a surface arranged radially outside the circumferential end face of the magnet. The circumferential end face on at least one side of the magnet may face the columnar portion with a gap interposed therebetween in the circumferential direction.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: November 15, 2016
    Assignee: NIDEC CORPORATION
    Inventors: Hidehiro Haga, Masato Aono, Takashi Hattori
  • Patent number: 9139098
    Abstract: A collector device of an electric train and a collector method thereof are provided. The collector device includes a collector unit and a magnetic unit. The collector unit has a first side, a second side and a graphite skateboard. The first side and the second side are the two opposite sides of the collector unit, and the graphite skateboard is disposed on the first side, wherein the first side of the collector unit is in contact with a power source having a magnetically permeable capacity via the graphite skateboard, so as to draw an operation voltage. The magnetic unit has an electromagnetic coil body. The magnetic unit is configured on the second side of the collector unit, for providing an attractive force between the collector unit with the power source, so as to reduce a contact loss rate.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: September 22, 2015
    Assignee: National Taiwan University of Science and Technology
    Inventors: Ming-Tse Kuo, Wen-Yi Lo, Yao-Yi Wang
  • Patent number: 8985030
    Abstract: Inductrack III configurations are suited for use in transporting heavy freight loads. Inductrack III addresses a problem associated with the cantilevered track of the Inductrack II configuration. The use of a cantilevered track could present mechanical design problems in attempting to achieve a strong enough track system such that it would be capable of supporting very heavy loads. In Inductrack III, the levitating portion of the track can be supported uniformly from below, as the levitating Halbach array used on the moving vehicle is a single-sided one, thus does not require the cantilevered track as employed in Inductrack II.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: March 24, 2015
    Assignee: Lawrence Livermore National Security, LLC
    Inventor: Richard F. Post
  • Patent number: 8850989
    Abstract: A method and system for transportation using a magnetic bearing structure is disclosed. In one aspect, there is an apparatus for carrying a load along a magnetizable structure. In one embodiment, the apparatus comprises a third structure spaced apart vertically from the magnetizable structure and configured to generate magnetic flux and repel from the magnetizable structure. In one embodiment, the apparatus comprises at least one coil positioned at at least one end portion proximal to the magnetizable structure. In one embodiment, the apparatus comprises at least one flux guide comprising a magnetizable material and configured to concentrate magnetic flux. A first portion of the flux guide is thinner than a second portion of the flux guide that is positioned closer to the magnetizable structure than the first portion of the flux guide.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: October 7, 2014
    Assignee: Sandor Wayne Shapery
    Inventor: Bradley Hunter
  • Patent number: 8640628
    Abstract: The invention relates to a linear permanent magnet driving system and a permanent magnet driving maglev train rail system, the linear permanent magnet driving system comprises spiral rotors and stators, wherein at least one of the spiral rotor and the stator adopts the structure having a permanent magnet while the other one adopts the structure having the permanent magnet or a magnetizer; when the spiral rotors are driven by an engine to rotate, linear motion of the spiral rotors is achieved by means of the magnetic force between both, and speed of the linear motion of the spiral rotors can reach supersonic speed at most. By applying the linear permanent magnet driving system to the permanent magnet driving maglev train rail system, the entire rail can avoid the use of both permanent magnet and driving coil, and the construction cost of maglev train rail is equivalent to that of the current high-speed wheel/rail.
    Type: Grant
    Filed: August 23, 2009
    Date of Patent: February 4, 2014
    Inventor: Zhongchen Liu
  • Patent number: 8578860
    Abstract: Inductrack III configurations are suited for use in transporting heavy freight loads. Inductrack III addresses a problem associated with the cantilevered track of the Inductrack II configuration. The use of a cantilevered track could present mechanical design problems in attempting to achieve a strong enough track system such that it would be capable of supporting very heavy loads. In Inductrack III, the levitating portion of the track can be supported uniformly from below, as the levitating Halbach array used on the moving vehicle is a single-sided one, thus does not require the cantilevered track as employed in Inductrack II.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: November 12, 2013
    Assignee: Lawrence Livermore National Security, LLC
    Inventor: Richard F. Post
  • Publication number: 20130174757
    Abstract: Inductrack III configurations are suited for use in transporting heavy freight loads. Inductrack III addresses a problem associated with the cantilevered track of the Inductrack II configuration. The use of a cantilevered track could present mechanical design problems in attempting to achieve a strong enough track system such that it would be capable of supporting very heavy loads. In Inductrack III, the levitating portion of the track can be supported uniformly from below, as the levitating Halbach array used on the moving vehicle is a single-sided one, thus does not require the cantilevered track as employed in Inductrack II.
    Type: Application
    Filed: March 7, 2013
    Publication date: July 11, 2013
    Inventor: Lawrence Livermore National Security, LLC
  • Patent number: 8391936
    Abstract: A magnetic levitation device includes at least two superconductor molded bodies with stored magnetic field configurations above a magnetic guide track. The at least two superconductor molded bodies have at least one of a stored magnetic field configuration with different vertical spacing from the guide track and a stored magnetic field configuration with different horizontal position with respect to the guide track. The at least two superconductor molded bodies are mechanically held in a position deviating from their stored position above the guide track and connected to one another. This abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.
    Type: Grant
    Filed: January 29, 2006
    Date of Patent: March 5, 2013
    Assignee: Leibniz-Institut Fuer Festkoerper-und Werkstoffforschung Dresden E.V.
    Inventors: Christoph Beyer, Oliver De Haas, Torsten Riederich, Ludwig Schultz
  • Patent number: 8297196
    Abstract: An apparatus for transferring substrates includes a carrier to which substrates are loaded, an upper transfer unit transferring the carrier horizontally by applying thrust to the carrier, a lower transfer unit maintaining the lower body of the carrier at the horizontal in a non-contact status, a magnetic levitation module levitating the carrier magnetically, and a lower damper unit maintaining the lower center of gravity of the carrier levitated by the magnetic levitation module.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: October 30, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Yeongjin Yeo, Seungheon Choi, Geejo Lee
  • Patent number: 8248196
    Abstract: The invention relates to a magnet arrangement for magnetic levitation vehicles. Said arrangement comprises a magnetic back box and a plurality of magnetic poles that are connected to said back box and that have magnetic pole faces bordering on a common reference surface. According to the invention, the reference surface extends along an elastic line when the magnetic pole is in the unloaded state, said elastic line being inverse to the curvature of the surface that is obtained under a nominal load of the magnetic poles when the magnetic pole faces are in the unloaded state on a plane. The invention also relates to a method for producing said type of magnet arrangement.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: August 21, 2012
    Assignee: ThyssenKrupp Transrapid GmbH
    Inventors: Peter Bugiel, Harald Pfannkuch, Wolfgang Hahn, Joachim Krämer
  • Patent number: 8224509
    Abstract: A system for controlling movements of a vehicle along a guideway includes an array of targets that are mounted on the vehicle, and a series of wayside sensors that are mounted on the guideway. A signal processor monitors the passage of targets past appropriate sensors and uses resultant signals to derive parametric values that are characteristic of the vehicle's movements. The parametric values are then coordinated with a controller for the operation of a linear synchronous motor that propels the vehicle.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: July 17, 2012
    Assignee: General Atomics
    Inventors: Philip Lynn Jeter, Karoly Kehrer, Husam Gurol
  • Patent number: 8171858
    Abstract: The networked guideway transit system uses materials and methods of constructing guideway elements. The materials and methods are designed to reduce the static weight, cost and physical size of the guideway structure. Installation cost is also significantly reduced by the modular nature of the guideway components, which can be manufactured in a controlled factory environment using mass production methods. As a result, the supporting structure of the guideway can be quickly erected and the modular blocks inserted with simple equipment. In addition, complex alignment procedures are not required. In particular, the guideway component includes motor coils having the shapes and configurations that facilitate the easy insertion of the guideway component without the need for interleaving coils in adjacent guideway components and without creating dead spots in the magnetic fields between guideway components.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: May 8, 2012
    Assignee: Advanced Maglev Systems, LLC
    Inventors: John Lee Wamble, III, Christopher Perkins, John V. Cole, Clark Foster
  • Patent number: 8113310
    Abstract: An all-electric, wheeled vehicle has a magnet array that can be selectively moved between a retracted position and a deployed position, to respectively operate in a motor mode or a generator mode. When in the motor mode, with its magnet array retracted, wheel rotation to move the vehicle is powered by an onboard battery. Alternately, in the generator mode with the magnet array deployed, the vehicle is powered by a Linear Synchronous Motor (LSM). Specifically, the deployed magnet array interacts with a multiple-phase winding (i.e. LSM) embedded into the roadway on which the vehicle travels. Further, rotation of the wheel during vehicle movement in the generator mode recharges the battery.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: February 14, 2012
    Assignee: General Atomics
    Inventors: Husam Gurol, Philip L. Jeter, Kurt M. Schaubel
  • Patent number: 8047138
    Abstract: A self-regulating magneto-dynamic system, utilizing steel core rails and permanent magnets as sources of magnetic field, provided for magnetic levitation, stabilization and propulsion in a high speed ground transportation vehicle moving with high speed without friction along a track having a predetermined trajectory, comprising of a self-regulating magneto-dynamic levitation and stabilizing system (MDLSS) provided for magnetic levitation and stabilization of the vehicle, and a permanent magnet linear synchronous motor (PMLSM) provided for stable propulsion of the vehicle. Both systems are situated on the same vehicle, interacting with each other only through electro-magnetic process, working synchronously, supporting each other's stability and self-regulation, where the stability of the MDLSS affects the functionality of the PMLSM, and the precise work of the PMLSM allows for more optimum design of the MDLSS.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: November 1, 2011
    Inventor: Oleg V. Tozoni
  • Patent number: 7954434
    Abstract: An apparatus for transferring substrates includes a carrier to which substrates are loaded, an upper transfer unit transferring the carrier horizontally by applying thrust to the carrier, a lower transfer unit maintaining the lower body of the carrier at the horizontal in a non-contact status, a magnetic levitation module levitating the carrier magnetically, and a lower damper unit maintaining the lower center of gravity of the carrier levitated by the magnetic levitation module.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: June 7, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Yeongjin Yeo, Seungheon Choi, Geejo Lee
  • Patent number: 7950333
    Abstract: A track and vehicle assembly for amusement park ride. The assembly includes a track with an arcuate contact surface and banked corners. A levitation circuit is placed along a length of the track with passive electric coils. The assembly includes a vehicle with a body for receiving passengers. The vehicle body includes a bottom surface that is adjacent to the contact surface of the track when the vehicle is positioned on the track. To utilize passive magnetic levitation, the vehicle includes arrays of permanent magnets positioned proximate to the bottom surface of the body. The magnet arrays are arranged, such as Halbach arrays, to produce a substantially one-sided magnetic flux distribution directed outward from the vehicle body. The vehicle is levitated above the track contact surface and allowed to move side-to-side by interaction of the permanent magnets and the coils when the vehicle travels above a minimum velocity.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: May 31, 2011
    Assignee: Disney Enterprises, Inc.
    Inventors: David W. Crawford, Jonathan G. Georges, Frank William Marquette, Matthew Aldren Simmons, Michael Craig Shatford
  • Patent number: 7814840
    Abstract: A magnet arrangement for a magnetic levitation vehicle is described. The magnet arrangement comprises a plurality of magnet poles (11) being combined to form groups (11a to 11f), wherein according to the invention each group contains one magnet pole (11a to 11f) or two magnet poles (11a to 11f). The windings (12a to 12f) of each group are controlled by a control circuit (18) individually assigned to it (FIG. 8).
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: October 19, 2010
    Assignee: ThyssenKrupp Transrapid GmbH
    Inventors: Peter Becker, Quinghua Zheng, Siegfried Ellmann, Friedrich Loeser
  • Publication number: 20100064929
    Abstract: Inductrack III configurations are suited for use in transporting heavy freight loads. Inductrack III addresses a problem associated with the cantilevered track of the Inductrack II configuration. The use of a cantilevered track could present mechanical design problems in attempting to achieve a strong enough track system such that it would be capable of supporting very heavy loads. In Inductrack III, the levitating portion of the track can be supported uniformly from below, as the levitating Halbach array used on the moving vehicle is a single-sided one, thus does not require the cantilevered track as employed in Inductrack II.
    Type: Application
    Filed: September 18, 2008
    Publication date: March 18, 2010
    Inventor: Richard F. Post
  • Publication number: 20100005997
    Abstract: The proposed Amlev Self-Regulating System of High Speed Ground Transportation Based on Permanent Magnets and Steel Cores is designated for magnetic levitation, stabilization, and propulsion of vehicles moving without friction. The proposed system comprises subsystems: a Magneto-Dynamic Levitation and Stabilizing Self-Regulating System (MDLSS), and a Permanent Magnet Linear Synchronous Motor (PMLSM). Both systems comprise permanent magnets and steel cores. MDLSS provides levitation and stabilization of vehicle while PMLSM produces propulsion force providing the assigned alternative velocity of the vehicle along the stator winding powered by the current of constant frequency 50 Hz. Each of the subsystems comprises two main parts: a fixed part—guideway/stator including extended steel cores for MDLSS and windings for PMLSM, and moving part—permanent magnets of the levitator for MDLSS and the rotor for PMLSM—both affixed to the moving vehicle.
    Type: Application
    Filed: July 8, 2008
    Publication date: January 14, 2010
    Inventor: Oleg Valentinovich Tozoni
  • Patent number: 7626290
    Abstract: A magnetic driving apparatus includes a bi-pole rotor wheel coupled to a speed adjustment motor and including a ferromagnetic wheel base and a magnetic rotor, the magnetic rotor including first and second magnetic rotor parts which are fixed to a circumferential surface of the wheel base in parallel with each other, spaced a first gap apart, and having opposite magnetic polarity to each other, each of the first and second magnetic rotor parts being formed by arranging alternatively magnetic rectangular blocks and non-magnetic spacers, and when being mounted to a circumferential surface of the ferromagnetic wheel base, the magnetic blocks and non-magnetic spacers of the first magnetic rotor part being aligned with those of the second magnetic rotor part.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: December 1, 2009
    Inventor: Lingqun Li
  • Patent number: 7562628
    Abstract: A networked guideway transit system uses permanent magnet repulsion with induction-based repulsion within the networked guideway transport system, which can levitate passively with motion. Magnetic levitation technology is used to replace wheels as the primary means of vehicle suspension. The networked guideway transit system uses the permanent magnets to provide primary lift and uses electrodynamic repulsion to create centering forces at most operational speeds while integrating linear motor functions with the electrodynamic centering function. Further, the networked guideway transit system uses no moving parts in the guideways, which enhances reliability in the guideways.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: July 21, 2009
    Inventors: John Lee Wamble, III, John Kropf
  • Patent number: 7527001
    Abstract: A bogie apparatus includes a chassis, rotation bogie parts respectively disposed at both ends of the chassis, and a composite motion bogie part located at a middle portion of the chassis. Each of said rotation bogie parts includes a circular upper inner ring permanent magnet fixed on a lower surface or a bottom surface of the chassis. A first bogie located under the chassis and having a bogie body is also added. A circular lower inner ring permanent magnet disposed on an upper surface or a top surface of the bogie body of the first bogie may be included. The inner ring may have inner and outer diameters substantially identical to those of the upper inner ring permanent magnet, and aligned with the upper inner ring permanent with a predetermined distance therebetween.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: May 5, 2009
    Inventor: Lingqun Li
  • Patent number: 7197987
    Abstract: A magnet assembly for the suspension and guidance of suspended vehicles and transport systems creates an intrinsically stable, contactless magnetic suspension and guidance system composed of an assembly of magnetic elements and a superconductor assembly for suspended vehicles and transport systems. At least one part of the magnetic element assembly is physically connected to the superconductor assembly. In addition, the magnetic elements assembly and the superconductor assembly are magnetically intercoupled to maintain a stable distance between at least two magnetic elements by the utilization of a magnetic field that is frozen in the superconductor. The magnetic assembly can be used in particular in those vehicles and transport systems that are configured to be displaced along a magnetic rail without making contact with the latter, thus enabling a displacement devoid of friction and abrasion.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: April 3, 2007
    Assignee: Leibniz-Institut fuer Festkoerper-und Werkstoffforschung Dresden e.V.
    Inventors: Martina Falter, Peter Bartusch, Ludwig Schultz
  • Patent number: 7096794
    Abstract: A simple permanent-magnet-excited maglev geometry provides levitation forces and is stable against vertical displacements from equilibrium but is unstable against horizontal displacements. An Inductrack system is then used in conjunction with this system to effect stabilization against horizontal displacements and to provide centering forces to overcome centrifugal forces when the vehicle is traversing curved sections of a track or when any other transient horizontal force is present. In some proposed embodiments, the Inductrack track elements are also employed as the stator of a linear induction-motor drive and braking system.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: August 29, 2006
    Assignee: The Regents of the University of California
    Inventor: Richard Freeman Post
  • Patent number: 7059252
    Abstract: A magnetic levitated car comprising a car body that is made to float on a magnetic road laid on with a plurality of spaced apart magnets, at least one magnetic suspension stabilizer disposed spacedly at the bottom of said car body, and at least one electro-magnetic wheel provided at the bottom of said car body. The bottom portion of said magnetic suspension stabilizer has a polarity similar to that of the magnets laid on the road to provided repulsion therefore that will levitate said car body.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: June 13, 2006
    Assignee: Maglevvison Corporation
    Inventor: Jose L. Guardo, Jr.
  • Patent number: 6886651
    Abstract: A material transportation system includes one or more material transportation vehicles, each having magnetic wheels coupled to a magnetically attractive surface that can include a ceiling, a wall, a floor, and/or a transition region. The material transportation vehicles are adapted to carry material from place to place. Each material transportation vehicle has sensors and motor controls that reduce swing motion of the material transportation vehicle and the material coupled thereto. A collision avoidance and traffic control system prevents collisions between the one or more material transportation vehicles.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: May 3, 2005
    Assignee: Massachusetts Institute of Technology
    Inventors: Alexander H. Slocum, Shorya Awtar, Anastasios John Hart
  • Publication number: 20040226475
    Abstract: A machine guideway for used in machine processing includes a base (10, 40), a slide block (20, 50) slideably received in a sliding groove of the base, and an electromagnetic suspension system. The electromagnetic suspension system provides a repulsion force having a direction opposite to that of gravitational force action on the slide block during sliding of the slide block along the sliding groove to an original starting position. When the repulsion force is greater than the gravitational force, the slide block can freely slide along the sliding groove. Therefore, the speed of processing is enhanced. In addition, the guidway does not sustain any wear due to friction. Furthermore, the guideway does not sustain any deformation due to friction heat.
    Type: Application
    Filed: May 12, 2004
    Publication date: November 18, 2004
    Inventor: Ga-Lane Chen
  • Patent number: 6792335
    Abstract: A mobile device for traversing a ferromagnetic surface. The device includes a frame and at least one surface contacting device attached to the frame. The device also includes a Halbach magnet array attached to the frame, wherein the Halbach magnet array provides a magnetic force to maintain the surface contacting device substantially into contact with the ferromagnetic surface.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: September 14, 2004
    Assignee: Carnegie Mellon University
    Inventors: William P. Ross, James F. Hoburg, Christopher Fromme, John Bares, Mark DeLouis
  • Patent number: 6758146
    Abstract: A magnet configuration comprising a pair of Halbach arrays magnetically and structurally connected together are positioned with respect to each other so that a first component of their fields substantially cancels at a first plane between them, and a second component of their fields substantially adds at this first plane. A track is located between the pair of Halbach arrays and a propulsion mechanism is provided for moving the pair of Halbach arrays along the track. When the pair of Halbach arrays move along the track and the track is not located at the first plane, a current is induced in the windings and a restoring force is exerted on the pair of Halbach arrays.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: July 6, 2004
    Assignee: The Regents of the University of California
    Inventor: Richard F. Post
  • Patent number: 6684794
    Abstract: A magnetically levitated transportation system employs permanent magnet rails along a guideway that interact with permanent magnets on a vehicle. The rails are optimized to reduce magnetic mass, while maximizing lift force. In one example, the arrays are composed of arrays of magnets having rotating magnetizations, such as Halbach arrays. In another example, the arrays are cup-shaped to provide stronger magnetic field forces in the central portion of the array, relative to the lateral portion of the array. The vehicle may be stabilized in the lateral and yaw directions with feedback controlled lateral control coils that interact with the permanent magnet rails on the guideway. Vertical, pitch and roll motions may be controlled or damped with eddy-current damper coils or plates or with active feedback control to control the coils.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: February 3, 2004
    Assignee: Magtube, Inc.
    Inventors: Orlo James Fiske, Chen Chen, Michael Richard Ricci, Bradley Evan Paden
  • Patent number: 6629503
    Abstract: A simple permanent-magnet-excited maglev geometry provides levitation forces and is stable against vertical displacements from equilibrium but is unstable against horizontal displacements. An Inductrack system is then used in conjunction with this system to effect stabilization against horizontal displacements and to provide centering forces to overcome centrifugal forces when the vehicle is traversing curved sections of a track or when any other transient horizontal force is present. In some proposed embodiments, the Inductrack track elements are also employed as the stator of a linear induction-motor drive and braking system.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: October 7, 2003
    Assignee: The Regents of the University of California
    Inventor: Richard Freeman Post
  • Patent number: 6502517
    Abstract: The invention relates to an arrangement for operating a transportation system with a magnetic levitation vehicle, in which the inventive arrangement consists of an integrated transmission system including a power transmission system for inductive transmission of electric power, a linear motor for transmission of motive power and a magnetic levitation system for transmission of a carrying force and/or a lateral guiding force.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: January 7, 2003
    Assignee: Alstom Anlagen-und Automatisierungstechnik GmbH
    Inventors: Ingolf Groening, Gerhard Henneberger, Manfred Klittich, Horst Wunderlich, Anton Seelig
  • Patent number: 6374746
    Abstract: A ground-based capsule pipeline with greatly improved speed, energy efficiency, and cost for transportation of freight and/or people. Passive magnetic levitation is used to suspend inert, rugged capsules within an air-evacuated pipeline, where they are propelled by a linear motor. Permanent magnet pole arrays incorporated in the capsules interact with inductively-enhanced conductive loops on the interior of the pipeline to produce a low “take-off” speed, high lift, and a high lift-drag ratio.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: April 23, 2002
    Inventor: Orlo James Fiske
  • Patent number: 6360670
    Abstract: A transportation system for moving a transportation module comprises a thrust tube and a pod assembly disposed inside the thrust tube to be thrusted along the thrust tube. An inner magnetic coupler is disposed inside the thrust tube and connected with the pod assembly to be moved by the pod assembly. An outer magnetic coupler is disposed outside the thrust tube and configured to connect with a transportation module. The outer magnetic coupler is spaced from the inner magnetic coupler by the thrust tube and is magnetically coupled with the inner magnetic coupler to be moved by the inner magnetic coupler. An inner spacing member is disposed inside the thrust tube and spaces the inner magnetic coupler from the inner surface of the thrust tube by a preset distance. An outer spacing member is disposed outside the thrust tube and spaces the outer magnetic coupler from the outer surface of the thrust tube by a preset distance.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: March 26, 2002
    Assignee: Flight Rail Corporation
    Inventor: Max P. Schlienger
  • Patent number: 6357359
    Abstract: An integrated MAGLEV (Magnetic Levitated Vehicle) system consists of permanent or preferably superconducting vehicle-mounted magnets which interact with both active and induced track-based currents. The magnets on the vehicle which are used for propulsion serve the dual purpose of realizing both levitation and lateral stabilization (guidance). The contribution offered by this invention is that it is able to provide propulsion, levitation, and guidance using a single type of track-based coil interacting with a singular type of magnetic field which is affixed to the vehicle. The realization of multiple functions with a single coil reduces the cost and enhances the efficiency of this MAGLEV system. In the main embodiment of this invention, propulsion currents are injected into brushes sliding along brush contact surfaces on the rail, series winding further eliminates the intermediate brushes leaving only the leading set of brushes and the trailing set.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: March 19, 2002
    Inventors: Kent R. Davey, Tony J. Morris
  • Patent number: 6101952
    Abstract: A system for guidance and/or switching of a vehicle or other object comprises a guideway, a guide plate that moves along the guideway, and a magnetic field source that induces a magnetic force between the guide plate and at least a portion of the guideway over which the guide plate is moving. The guide plate is attached to the vehicle or coupled to its steering systems. The magnetic force centers the guide plate along the guideway by opposing any lateral deviation from center. The magnetic field source is a permanent magnet, an electromagnet (including a superconducting magnet) or any other known magnetic field source. It is preferably included in, or forms part of, the guide plate. Likewise, the guide rail preferably comprises ferromagnetic or paramagnetic material, i.e., a material that forms a temporary magnet in the presence of the magnetic field of the source.
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: August 15, 2000
    Assignee: MagneMotion, Inc.
    Inventors: Richard D. Thornton, Tracy M. Clark, Dariusz A. Bushko
  • Patent number: 5652472
    Abstract: The proposed Magneto-Dynamic Levitation and Stabilizing Self-Regulating System (MDLSS) is designated for the stable flight of a heavy body along a given trajectory and can be employed for the magnetic levitation of vehicles and cars in high-speed ground transportation systems and for self-regulating magnetic bearings, various devices for ground acceleration, and also in the launching of space ships, missiles, and other technologies. The MDLSS system includes identical unique units connected rigidly with each other by non-magnetic ties and oriented relative to each other such that de-stabilizing forces created in one unit are compensated by stabilizing forces created in another unit once the equilibrium has been violated. Each of the units contains two extended steel cores (C-shaped in their cross-section), both lateral surfaces of which are covered by non-magnetic metallic screens, and a magnet assembly placed symmetrically in the air gap between the tips of the cores.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: July 29, 1997
    Inventor: Oleg V. Tozoni
  • Patent number: 5615618
    Abstract: A rotating device such as an orbital motor has a stator which includes a pair of opposed, generally annular magnetic units each comprising a plurality of groups of permanent magnets such as ceramic or ferrous magnets arranged in a side-by-side relationship, each plurality being separated from an adjacent plurality by a magnetically permeable member, such as a malleable steel member or a malleable or molded iron member, to focus the lines of magnetic flux. A core armature is rotatably secured to a rotable shaft between the opposed pair of generally annular magnetic units for rotation therebetween. A commutator is fixedly secured for rotation with the armature coil and for receiving power supplied to or received from the motor and input electrical terminals.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: April 1, 1997
    Inventor: Elberto Berdut
  • Patent number: 5586505
    Abstract: The invention relates to a magnetic unit having a plurality of groups of permanent magnets such as ceramic or ferrous magnets arranged in a side-by-side relationship, each plurality being separated from an adjacent plurality by a magnetically permeable member, such as a malleable steel member or a malleable iron or molded iron member to focus the lines of magnetic flux. Preferably, each of the permanent magnets within a group is also separated by an interleaved sheet of magnetically permeable material. Such a plurality of groups of permanent magnets are secured together to form a channel therebetween in which a supporting member is connected through fastening members to a movable levitated member.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: December 24, 1996
    Inventor: Elberto Berdut
  • Patent number: 5584367
    Abstract: The invention relates to a magnetic unit used as a shock absorber or load leveler for a vehicle and having a plurality of groups of permanent magnets such as ceramic or ferrous magnets arranged in a side-by-side relationship, each plurality being separated from an adjacent plurality by a magnetically permeable member, such as a malleable steel member or a malleable iron or molded iron member to focus the lines of magnetic flux. Preferably, each of the permanent magnets within a group is also separated by an interleaved sheet of magnetically permeable material. Such a plurality of groups of permanent magnets are secured together to form a channel therebetween in which a supporting member is connected through fastening members to a movable levitated member which in turn is connected to the axle of the vehicle.
    Type: Grant
    Filed: March 2, 1995
    Date of Patent: December 17, 1996
    Inventor: Elberto Berdut
  • Patent number: 5452663
    Abstract: The invention relates to a magnetic unit having a plurality of groups of permanent magnets such as ceramic or ferrous magnets arranged in a side-by-side relationship, each plurality being separated from an adjacent plurality by a magnetically permeable member, such as a malleable steel member or a malleable iron or molded iron member to focus the lines of magnetic flux. Preferably, each of the permanent magnets within a group is also separated by an interleaved sheet of magnetically permeable material. Such a plurality of groups of permanent magnets are secured together and to a supporting member through fastening members, and are separated from the support by a non-magnetic member, such as a non-ferrous plate.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: September 26, 1995
    Inventor: Elberto Berdut
  • Patent number: 5440997
    Abstract: A magnetic suspension system for a vehicle/rail transportation system, where interacting sets of magnets are positioned on the vehicle and the rail to suspend the vehicle from the rail and permit low friction movement along the rail. Also, laterally facing air castors are provided for lateral support. Magnet sets are provided in both linking and opposing relationship to provide support and (in at least some embodiments) prevention of lift off.
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: August 15, 1995
    Inventor: Walter A. Crowley
  • Patent number: 5431109
    Abstract: The invention relates to a magnetic unit having a plurality of groups of ceramic magnets arranged in a side-by-side relationship, each plurality being separated from an adjacent plurality by a malleable steel member to focus the lines of magnetic flux. Preferably, each of the ceramic magnets within a group is also separated by an interleaved sheet of malleable steel. Such a plurality of groups of ceramic magnets are secured together and to a supporting member through fastening members, and are separated from the support by a non-magnetic member, such as a non-ferrous plate. A second plurality of groups of ceramic magnets are positioned adjacent to a first plurality of such groups of ceramic magnets with opposite poles of the magnets facing each other so that the first and the second pluralities of such groups of magnetics attract one another. Those forces of attraction are used to cause levitation of a vehicle such as a train.
    Type: Grant
    Filed: April 14, 1993
    Date of Patent: July 11, 1995
    Inventor: Elberto Berdut
  • Patent number: 5343811
    Abstract: The invention resides in a magnetic force system for frictionless transportation of loads, with at least one magnet (1) secured to the load (7), the magnet being arranged with respect to a ferromagnetic support profile (2). It is important that the magnet (1) be arranged with respect to the profile (2) such that the pole surfaces of the magnet (1) cooperate with at least one vertical profile wall, and are essentially parallel to that wall. A particularly good embodiment is obtained by providing magnets on both sides of a profile wall (2), the magnets having identical poles toward the wall (repulsion principle). Longitudinally, the magnets are arranged in pairs and are close-circuited in pairs by a ferromagnetic plate (4).
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: September 6, 1994
    Inventor: Peter Schuster
  • Patent number: 5243919
    Abstract: A magnetic levitation actuator includes a pair of U-shaped first permanent magnets provided on opposite sides of an object to be driven with a pair of outwardly projecting first legs defining the U-shape. A pair of guide rails are spaced apart from the object on opposite sides thereof, and a pair of U-shaped second permanent magnets are provided on associated guide rails and extend along the guide rails. Each of the second permanent magnets is provided with a second pair of legs defining the U-shape of the associated second magnets and opposed to the associated first legs of the first magnets with a predetermined gap therebetween. The first legs and second legs, which are opposed to each other, have opposite polarities to produce a magnetic attraction therebetween.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: September 14, 1993
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Masami Ninomiya
  • Patent number: 5165347
    Abstract: A vehicle levitation and guidance system (20) is provided which levitates a vehicle (22) over a roadbed (28) through the use of thin permanently magnetized strips (32, 34) located in the vehicle and the roadbed. The strips are oriented with like magnetic poles adjacent to generate a repelling force. The vehicle is guided along the roadbed by sliding engagement of the walls (37) of a channel (30) in the roadbed with pins (36) descending from the vehicle. The vehicle is propelled along the roadbed by contact with a set of rotating wheels (42, 42').
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: November 24, 1992
    Inventor: Thomas V. Wagner
  • Patent number: 5049218
    Abstract: A magnetic support and transport system comprising a plurality of permanent magnets for interacting with ferrous T-bars of a ceiling grid to counteract gravitational attraction. A plurality of rollers maintain an air gap between the magnets and the grid. A remotely controlled electric motor drives at least one of the rollers and thereby transports the system along the T-bars. Opposing pairs of guides maintain alignment of the system with the T-bars. Each pair of the guides is adapted to automatically retract upon encountering transversely oriented T-bars. When used for grid resurfacing and redecorating applications, the system can support a tape dispenser adapted to transfer adhesive pressure sensitive tape to downwardly exposed surfaces of the grid. A modified embodiment of the present invention is adapted to support surveillance equipment.
    Type: Grant
    Filed: December 4, 1989
    Date of Patent: September 17, 1991
    Inventor: Geoffrey Martin
  • Patent number: 5020444
    Abstract: The present invention relates to an improvement in a method and an apparatus for magnetic levitation of a linear slider through a PI control action. When the slider is horizontally moved while levitated vertically by two fixed magnetic forces, the angle of inclination of the slider cannot be settled in a preset position because of a control delay caused by integral action, which results in an angle offset. In order to eliminate the offset, a signal which is the sum of an angle deviation and a delay compensation signal that is proportional to the product of the velocity of the slider and an integral time is used as an error signal to settle the angle of inclination. The vertical position of the slider is controlled so that the sum of the magnetic forces applied to the slider balances the weight of the slider.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: June 4, 1991
    Assignee: Kabushiki Kaisha Yasakawa Denki Seisakusho
    Inventors: Akihiro Furutani, Junichi Okada, Tomoaki Tanimoto
  • Patent number: 4877123
    Abstract: A conveyor for use in a room with a high degree of cleanness and which can convey wafers one by one stably, without generation of dust. The conveyor has vehicles having a slit in the surface on which a wafer can be placed, permanent magnets provided on the undersurface of the vehicle, and a magnetic fluid interposed between the permanent magnets and a transporting course for floating the vehicle. By moving the vehicle along the transporting course by linear motors or by driving devices of the rope trolley type, wafers are conveyed one by one on the vehicle.
    Type: Grant
    Filed: March 10, 1988
    Date of Patent: October 31, 1989
    Inventors: Ichiro Fukuwatari, Seiji Watanabe