Magnetic Field Type Patents (Class 310/103)
  • Patent number: 11313431
    Abstract: A quasi-zero stiffness electromagnetic vibration isolator for ultra-low frequency vibration reduction and isolation is provided. When the vibration isolator is in a static equilibrium position, upper and lower air gaps are equal, and electromagnetic attraction forces of upper and lower stator assemblies to a mover assembly are equal. When the load tends to move upwards, the mover assembly is subjected to an upward resultant force, when the load tends to move downwards, the mover assembly is subjected to a downward resultant force, showing the characteristic of negative stiffness. A negative stiffness mechanism composed of the upper stator assembly, the lower stator assembly and the mover assembly is connected in parallel with the positive stiffness springs to achieve a quasi-zero stiffness.
    Type: Grant
    Filed: October 8, 2021
    Date of Patent: April 26, 2022
    Inventors: Guoyong Jin, Junjie Yuan, Tiangui Ye, Zhigang Liu
  • Patent number: 11266917
    Abstract: Described herein is an assembly and methods of use thereof for controlling or governing the relative speed of motion between the assembly parts via eddy current formation. The assembly and methods also may minimize the number of parts required and may minimize the number of moving parts thereby increasing the mechanical durability of the assembly compared to art designs that may have more moving parts and greater part complexity.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: March 8, 2022
    Assignee: Eddy Current Limited Partnership
    Inventors: Andrew Karl Diehl, Kevin A. Wright
  • Patent number: 11261952
    Abstract: A magnet gear device includes a first magnet unit in which two or more magnetic poles are alternately arranged in a direction along a rotation axis and a circumferential direction with respect to the rotation axis, respectively; a second magnet unit in which two or more magnetic poles are alternately arranged in the direction along the rotation axis and the circumferential direction, respectively, wherein the second magnet unit is disposed radially outside the first magnet unit; and a pole piece unit including a plurality of pole pieces to form a magnetic flux path between the first magnet unit and the second magnet unit. Each of the plurality of pole pieces is formed to extend in a radial direction to allow each of both an inner end and an outer end thereof to overlap at least a portion of the first magnet unit and the second magnet unit.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: March 1, 2022
    Assignee: SL Corporation
    Inventors: Sungjin Kim, Chunnyung Heo
  • Patent number: 11235445
    Abstract: An electric power tool includes: a driving shaft that is rotated by a motor; an output shaft on which a front-end tool is attachable; and a torque transmission mechanism that transmits a torque produced by the rotation of the driving shaft to the output shaft. The torque transmission mechanism includes a magnet coupling including a driving magnet member coupled to a side of the driving shaft and a driven magnet member coupled to a side of the output shaft, and the driving magnet member and the driven magnet member are provided such that respective magnetic surfaces face each other, S-poles and N-poles being alternately arranged on each of the magnetic surfaces.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: February 1, 2022
    Inventors: Itaru Murui, Hiroaki Murakami, Mitsumasa Mizuno, Akiko Honda, Satoshi Kajiyama
  • Patent number: 11239738
    Abstract: A variable-speed magnetic coupling having a radially movable magnet, comprising a drive disc assembly (I), a driven disc assembly (II), and a speed adjusting device assembly (III). Relative rotation of a speed adjustment sleeve (15) with respect to a drive shaft (16) is achieved by means of contact and fitting of a cylindrical pin (20) with respect to a vertical recess on an inner wall of the drive shaft and to an inclined recess on an inner wall of the speed adjustment sleeve. The speed adjustment sleeve is connected to a circular slotted disc (18) by means of a screw. A permanent magnet (10) is attached to a permanent magnet bearer (9) and inserted into a rectangular through hole of a circular frame (13), and a radial movement of the permanent magnet is enabled by means of a cam and groove sliding block mechanism consisting of the circular slotted disc, the circular frame, the permanent magnet bearer, and the permanent magnet.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: February 1, 2022
    Inventors: Chaojun Yang, Kang Liu, Weifeng Zhang, Yingzhi Wu, Ming Liu
  • Patent number: 11190094
    Abstract: A magnetically geared apparatus comprising a rotor, the rotor comprising: a ring structure; and at least one pole piece mounted relative to the ring structure; wherein at least a portion of the ring structure forms a continuous ring radially inner to the at least one pole piece, wherein the at least one pole piece is received in a pole piece-receiving portion, the pole piece receiving portion being open at a radially outer end.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: November 30, 2021
    Assignee: Magnomatics Limited
    Inventors: David Powell, Ferran Garcia Daras, Gregg Wilson, Robert Barrett
  • Patent number: 11159081
    Abstract: The present disclosure refers to a magnetic rack-and-pinion coupling system (1) for contactless transfer of kinetic energy comprising: a rack component (3) comprising a first pattern of ferromagnetic structure being repetitive along a rack length axis (L), and a pinion stack component (5) being rotatable about a rotor axis (R), wherein the rack component (3) and/or the pinion stack component (5) are movable relative to each other along the rack length axis (L), and wherein the pinion stack component (5) comprises a stack of pinion discs (9a,b,c,d) each comprising a second pattern of ferromagnetic structure being repetitive along a circumference of the respective pinion disc (9a,b,c,d), wherein at least one magnetic field producing element (13a,b,c) is sandwiched between neighbouring pinion discs (9a,b,c,d), wherein each magnetic field producing element (13a,b,c) has one magnetic pole (N, S) at an axial front side (14) of the magnetic field producing element (13a,b,c) and the other magnetic pole (S, N) at
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: October 26, 2021
    Inventors: Flemming Buus Bendixen, Alexandru Sorea, Tanja Johnsen
  • Patent number: 11109742
    Abstract: A magnetic coupling is provided having two rings that are arranged concentrically in relation to one another, which are each mounted to be rotatable in relation to one another. An arrangement of at least three magnetic dipoles is respectively arranged on both rings, the magnetic dipoles facilitating magnetic coupling of the rings and a transmission of torque from a driving ring to a driven ring of the two rings. The magnetic dipoles of the arrangements at the driven ring and/or at the driving ring is/are aligned such that two like magnetic poles, which adjoin one another on the respective other ring, are always followed by an unlike magnetic pole, and the magnetic poles adjoining one another at the respective other ring are arranged in a manner corresponding to one another such that the two rings are magnetically coupled in an equilibrium position.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: September 7, 2021
    Assignee: Schölly Fiberoptic GmbH
    Inventors: Johannes Wickersheim, Jochen Dietrich, Mateusz Cichosz, Massimo Kubon
  • Patent number: 11066146
    Abstract: A propulsor and control system for a Lighter Than Air (LTA) aircraft having annular fore and aft circumferential shrouds surrounding the aircraft body. The fore and aft circumferential shrouds form respective fore and aft circumferential shroud gaps between the fore and aft circumferential shrouds and the LTA aircraft body. Fore and aft propulsor blades are situated substantially or completely within the fore and aft circumferential shroud gaps. The blades counter-rotate in one embodiment. The fore and aft circumferential ring propulsors can have front control vanes located in front of the respective propulsors blade sets, and back control vanes located behind the respective propulsors to control the direction of the flow of air in order to maneuver the LTA aircraft. Magnetic levitation may be used to actuate the propulsor blade sets.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: July 20, 2021
    Inventor: Eric Bleicken
  • Patent number: 11056955
    Abstract: The invention relates to an aircraft turbine having counter-rotating propellers and a primary drive, the noise development of which is significantly reduced with respect to aircraft turbines which have a primary drive based on the internal combustion principle. The invention relates to an aircraft turbine having counter-rotating propellers and a primary drive, the primary drive of which is based on the electric drive principle.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: July 6, 2021
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Matthias Dorfner, Korbinian König-Petermaier
  • Patent number: 11018569
    Abstract: The torque augmentation device has two primary embodiments. The first embodiment is two rotors, the rotors including rings of permanent magnets. The two rotors are angled with respect to each other. The magnetic field is disrupted on the bottom half by a ferrous flux diversion plate. With the forces unbalanced between the upper and lower halves of the rotors, rotation will result, thus augmenting the torque production of any associated rotational device. The second embodiment uses a straight shaft, with a single central rotor, both sides of the rotor covered in magnets. In place of adjacent rotors, the second half of the magnets is placed on fixed plates, one on each side of the central rotor. The fixed plates are set at an angle with respect to the central rotor, creating the unbalanced forces that cause rotation.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: May 25, 2021
    Inventors: Robert Herrin, Sean R. Khant
  • Patent number: 10900540
    Abstract: A flywheel assembly for a renewable energy generation system includes a flywheel housing defining a cavity therein, a flywheel rotatably disposed within the cavity of the flywheel housing, where the flywheel is simultaneously formed from the same component as the flywheel housing, a magnetic levitation disk defining opposed upper and lower surfaces, the upper surface supporting the flywheel and the lower surface including a first plurality of magnets disposed thereon, and a base plate having a second plurality of magnets disposed on a surface thereof that is facing the first plurality of magnets, the second plurality of magnets having a polarity that is opposite of a polarity of the first plurality of magnets such that the magnetic force of the first and second plurality of magnets urges the magnetic levitation disk away from the base plate.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: January 26, 2021
    Inventors: Victor Bica, Eugene Earle Rudolph
  • Patent number: 10816002
    Abstract: The present invention relates to a pump unit (300), with at least one impeller, comprising a coupling, wherein the coupling is mechanically connected to the at least one impeller via an inner rotor and where an outer rotor is connected to an electrical machine arranged to produce a rotational torque, said pump being arranged to circulate a hot fluid by the impeller. The coupling includes an outer rotor including a plurality of permanent magnets (101,201) arranged to form a plurality of magnetic poles (105, 205), and an inner rotor (110, 210), whereby the outer rotor and the inner rotor are located coaxially to one another around an axis (130, 230) and spaced apart from one another by an air gap (150,250). A rotor can (330) is arranged in the air gap (250, 150) between the inner rotor and the outer rotor, so as to make a dividing section between the inner and outer rotor.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: October 27, 2020
    Assignee: Grundfos Holding A/S
    Inventors: Flemming Buus Bendixen, Alan Ivo Sogaard Sorensen
  • Patent number: 10763736
    Abstract: Low frequency power is transmitted over long distances from a surface power supply to a subsea rotating machine, such as a pump or compressor. The low frequency power is used to rotate a motor at low speed. A liquid filled magnetic step-up gear module might be used to increase the low speed motor shaft to a higher speed output shaft that can be used to operate the rotating machine. The magnetic gear module can be configured as a fixed ratio, and the surface power supply can be configured to adjust the power frequency to change the speed of a single subsea rotating machine. In other embodiments, the magnetic gear module can provide a variable gear ratio. A fixed low frequency might be transmitted from the surface and multiple subsea loads can be operated from the same power source, each having their own variable magnetic gear module.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: September 1, 2020
    Assignee: OneSubsea IP UK Limited
    Inventors: Aage Hadler-Jacobsen, Audun Magne Askeland
  • Patent number: 10760196
    Abstract: Disclosed are a laundry treatment apparatus and a magnetic gear device. The laundry treatment apparatus includes a cabinet for defining an external appearance of the laundry treatment apparatus, a drum rotatably disposed inside the cabinet for accommodating laundry therein, and a power unit for rotating the drum. The power unit includes a rotational magnetic field generator fixed inside the cabinet for generating a rotational magnetic field, a magnetic flux converter provided radially outside of the rotational magnetic field generator for forming a magnetic path, and a magnetic rotator provided radially outside of the magnetic flux converter, the magnetic rotator having at least one permanent magnet inside thereof.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: September 1, 2020
    Inventor: Hiroyuki Inoue
  • Patent number: 10759638
    Abstract: A drive train is provided for hoisting gears, and in particular for hazardous transports. The drive train includes a drive motor (1), a cable drum (6) connected thereto, a reduction transmission (5) arranged between the drive motor (1) and the cable drum (6), a service brake (4) provided between the drive motor (1) and the reduction transmission (5) and a safety brake (7). To prevent damage to the reduction transmission (5) in the event of an emergency stop braking an automatic overrun disconnect means can be provided between the drive motor (1) and the service brake (4). The overrun disconnect means is preferably in the form of a freewheel (2).
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: September 1, 2020
    Assignee: M.A.T. Malmedie Antriebstechnik GmbH
    Inventors: Christof Lautwein, Christian Spura, Christoph Wagener
  • Patent number: 10743933
    Abstract: A catheter is configured to access a renal artery. A lumen of the catheter's shaft is dimensioned to receive a flexible actuation member which extends between the shaft's proximal and distal ends. The actuation member is moveable within the lumen and subject to elastic deformation, friction, and/or whip along its length. A flexible support member is coupled to a distal end of the actuation member and extendible beyond a distal tip of the shaft. An RF ablation electrode at a distal end of the support member is configured to ablated perivascular renal nerve tissue. A position converter at the distal end of the shaft is configured to convert movement of the actuation member into one or both of controlled rotational and axial movement of the support member and electrode to one of a multiplicity of stable circumferential positions substantially free of elastic deformation, friction, and/or whip impacting actuation member movement.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: August 18, 2020
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Scott Smith, Leonard B. Richardson, Mark L. Jenson
  • Patent number: 10715025
    Abstract: A magnetic cycloid gear assembly includes an outer magnet drum comprising a plurality of outer drum magnets having a first number of magnetic pole pairs. The assembly also includes a first inner magnet drum comprising a first plurality of inner drum magnets having a second number of magnetic pole pairs. The assembly also includes a second inner magnet drum comprising a second plurality of inner drum magnets having a third number of magnetic pole pairs. Each of the first and second inner drums has an inner magnet drum axis that is offset from an outer magnet drum axis. The assembly further includes a plurality of drive mechanisms, each mechanism being operatively coupled to each of the first and second inner drums. The plurality of drive mechanisms is configured to drive each of the first and second inner magnet drums to revolve in an eccentric manner about the outer drum axis.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: July 14, 2020
    Inventors: Kent R. Davey, Kenneth Seyffert, Cliff A. Swiontek, Tim Duggan, Timothy Montgomery
  • Patent number: 10707734
    Abstract: An electromagnetic rotary drive includes a contactlessly magnetically drivable rotor that is coil-free and free of permanent magnets and that includes a magnetically effective core, and a stator by which the rotor is contactlessly magnetically drivable about a desired axis of rotation in the operating state. The stator has a plurality of coil cores of which each includes a bar-shaped longitudinal limb extending from a first end in a direction in parallel with the desired axis of rotation up to a second end, all the first ends being connected by a reflux of windings generate an electromagnetic rotational field of which each surrounds one of the longitudinal limbs. The coil cores include a plurality of permanent magnets by which a permanent magnetic pre-magnetization flux can be generated.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: July 7, 2020
    Inventors: Thomas Holenstein, Reto Schöb
  • Patent number: 10707742
    Abstract: The disclosure provides a pole-piece structure for a magnetic gear, comprising a plurality of laminate plates, wherein each plate comprises one or more apertures and an aperture in each plate aligns with an aperture in an adjacent plate to form one or more channels extending from a first end of the laminate plates to a second, opposite end of the laminate plates, wherein a resin cast is provided within each channel to hold the plurality of laminate plates together.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: July 7, 2020
    Inventors: Andrew Hawksworth, Paul Proverbs
  • Patent number: 10704553
    Abstract: Disclosed is a magnetic coupling for transmitting torque along an axis of rotation, comprising two coupling parts which can be rotated relative to each other, wherein a drive-side coupling part has a drive-side permanent magnet and wherein an output-side coupling part has an output-side permanent magnet that lies opposite and at a distance from the drive-side permanent magnet along the axis of rotation. One of the coupling parts comprises a diverting element which is at least partially ferromagnetic and is non-rotatably connected to the permanent magnet of said coupling part and one part of the diverting element is disposed radially outside the opposite permanent magnet.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: July 7, 2020
    Inventors: Christoph Janeczek, Markus Hinteregger
  • Patent number: 10641243
    Abstract: An electrical power generator includes a first part configured to be located in a fluid such that, when the fluid moves, it generates vortices in the fluid so that a lift force is generated on the first part, which produces an oscillating movement of the first part, which has an amplitude. The natural oscillation frequency of the first part may be adjusted to wind speed by way of magnets, which repel each other. Magnets may also be used to generate electrical currents in coils. The first part can have a diameter that increases with distance above the base of the generator.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: May 5, 2020
    Assignee: VORTEX BLADELESS, S.L.
    Inventor: David Jesús Yañez Villarreal
  • Patent number: 10586639
    Abstract: Techniques disclosed here provide an array of magnets and a method of manufacturing a magnet array. In an embodiment, the array of magnets includes a plurality of three-pole magnets arranged in an array in which each three-pole magnet comprising the array is adjacent to one or more other three-pole magnets comprising the array. For example, a three-pole magnet comprises a first surface comprising a first magnetic pole having a first magnetic polarity, a second surface that is adjacent to and at least partly orthogonal to the first surface and which comprises a second magnetic pole having a second magnetic polarity that is opposite the first magnetic polarity, and a third surface that is adjacent to the first surface at an end substantially opposite the second surface and which comprises a third magnetic pole having the second magnetic polarity.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: March 10, 2020
    Assignee: WISK AERO LLC
    Inventor: Geoffrey Alan Long
  • Patent number: 10581287
    Abstract: A permanent magnet electric machine (PM machine) includes a rotor with rotatable magnets and a stator defining an air gap with the rotor. An actuator rotates the rotatable magnets at predetermined operating points through an angular distance sufficient for changing magnetic pole orientations of the rotatable magnets, and thus modifies magnetic flux linkage with stator windings across the air gap. Fixed magnets may be arranged around a circumference of the rotor. The actuator may be actively or passively driven. Flux-shunting elements are optionally disposed in the rotor to further modify the flux linkage. A gear set connected to torque transfer elements may be driven by the actuator to rotate the rotatable magnets. A vehicle includes drive wheels, a transmission, and the PM machine. A method controls magnetic flux linkage in the PM machine noted above.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: March 3, 2020
    Assignee: GM Global Technology Operations LLC
    Inventors: Shawn H. Swales, Khwaja M. Rahman, Craig S. Ross, Goro Tamai
  • Patent number: 10541597
    Abstract: A gearbox is described that includes a magnetic gear irrotationally mounted on one shaft and a set of gears on another shaft, wherein the one gear is in sequential magnetic interaction with the set of gears to alter to rotational speed of either the one gear or the set of gears.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: January 21, 2020
    Inventors: George Winston Whitfield, Howard Martin Chin
  • Patent number: 10508004
    Abstract: An elevator system includes an elevator car for travel in a hoistway; a stator positioned along the hoistway; and a magnetic screw assembly coupled to the car, the magnetic screw assembly coacting with the stator to impart motion to the elevator car; the stator including a service section having a plurality of poles to coact with the magnetic screw assembly; the stator including a transfer station section, the transfer station section of the stator including a plurality of stator permanent magnets.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: December 17, 2019
    Inventor: Richard N. Fargo
  • Patent number: 10434719
    Abstract: An additive manufacturing system includes a gantry configured to move in a build plane. A platen is configured to support a part being built in a layer by layer process and wherein the platen is configured to move in a direction substantially normal to the build plane. A head carriage is carried by the gantry wherein the head carriage includes ferromagnetic material. The system includes at least one print head where the print head includes a housing and one or more magnets attached to the housing wherein the at least one print head is configured to be coupled to the head carriage through a magnetic coupling between the one or more magnets and the ferromagnetic material such that the print head is configured to move rotationally relative to the head carriage.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: October 8, 2019
    Assignee: STRATASYS, INC.
    Inventors: William J. Swanson, Alfredo Santiago, Jr., Joseph LaBossiere, Kevin Johnson, Nathan Joseph Knutson
  • Patent number: 10389206
    Abstract: An electromagnetic power generator device and a method thereof for using balanced electromagnetic forces to drive one or more flywheel rotor assemblies on a fixed shaft and generating large amount of electrical power are provided. The electromagnetic power generator device includes a non-rotating shaft attached to a support frame, at least one flywheel rotor assembly, and at least one input driver plate assembly which is coupled to the flywheel rotor assembly via the non-rotating shaft penetrating through a first centered hole of a bearing of the flywheel assembly and a second centered hole of the input driver plate assembly.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: August 20, 2019
    Inventor: William P Fung
  • Patent number: 10374502
    Abstract: A permanent magnet speed governor having a fixed magnetic gap. The permanent magnet speed governor has an outer magnetic rotor connected to a drive shaft and an inner magnetic rotor connected to a driven shaft, at least one outer permanent magnet being evenly distributed along the circumferential direction of the inner circumferential surface of the outer magnetic rotor, at least one inner permanent magnet being evenly distributed along the circumferential direction of the outer circumferential surface of the inner magnetic rotor, two magnetic pole sides of the inner permanent magnet being respectively fixed to an iron yoke, another two sides each being provided with a magnetically conductive body, one end of the inner magnetic rotor being provided with a magnetic circuit regulator used for moving each magnetically conductive body along the axial direction. Adoption of the fixed magnetic gap structure reduces the difficulty of assembly.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: August 6, 2019
    Inventor: Junqi Diao
  • Patent number: 10367392
    Abstract: A rotary magnetic transmission structure that can achieve stable transmission is provided. Two magnetic members having radial magnetic fields are fixed on each shaft of two parallel shafts A and B; the radial magnetic fields of the two co-axial magnetic members both spread at an angle greater than 60 degrees and less than 90 degrees; using the first magnetic members of each shaft A and B as references, the direction of opening of the angle between the radial magnetic field of the second magnetic member and the radial magnetic field of the co-axial first magnetic member on the same shaft is opposite to that on the other shaft. This structure can obviously reduce the peak effect at the two poles of the magnetic fields of the magnetic members between the two shafts, so that the transmission is stable during non-contact rotary transmission.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: July 30, 2019
    Inventor: Zhongming Wang
  • Patent number: 10361617
    Abstract: A device for transmitting rotational motions without contact may include an inner rotor with at least one inner-rotor magnet and an outer rotor with at least one outer-rotor magnet. The inner rotor and the outer rotor are magnetically coupled to one another and rotatable along a rotation direction about a common axis of rotation. The at least one inner-rotor magnet and/or the at least one outer-rotor magnet may have a magnetization that is at least one of diametric, radial, and lateral. The at least one inner-rotor magnet may have a different type of magnetization than the at least one outer-rotor magnet.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: July 23, 2019
    Assignee: Mahle International GmbH
    Inventors: Rolf Mueller, Thomas Riemay, Peter Wieske
  • Patent number: 10355568
    Abstract: A permanent magnet electric machine includes a rotor including a plurality permanent magnets arranged around a central shaft and supported in an outer member and a stator surrounding the rotor and arranged to allow the rotor to turn within in inner diameter of it. The rotor includes one or more flux control elements disposed within the output member and moveably attached to the central shaft that move from an initial position when the rotor is rotating at a first rate and to a second position closer to the permanent magnets when the rotor is operating at a second rate, greater than the first rate.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: July 16, 2019
    Inventor: Jacek F. Gieras
  • Patent number: 10305360
    Abstract: A balanced magnetic rotor assembly is disclosed. The balanced rotor assembly including a driver rotor assembly having a first driver rotor assembly and a second driver rotor assembly arranged about a rotational axis and being spaced apart from each other a distance along the rotational axis, and a load rotor being arranged about the rotational axis and arranged between the first driver rotor and the second driver rotor.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: May 28, 2019
    Assignee: MagnaDrive Corporation
    Inventors: Rian Rustvold, Jeongkwan Lee, Geoffrey Reynolds Harmon
  • Patent number: 10278894
    Abstract: The present invention is directed to a jet assembly comprising a jet assembly housing, a magnetic impeller, and at least one friction-reducing member. The present invention is also directed to a fluid pump that comprises a motor assembly and a jet assembly comprising a jet assembly housing, a magnetic impeller, and at least one friction-reducing member. The present invention is further directed to a method for dispensing a fluid using the jet assembly comprising a jet assembly housing, a magnetic impeller, and at least one friction-reducing member. The at least one friction-reducing member allows a motor assembly to cause a magnetic impeller to rotate within a jet assembly housing and preferably not make contact with an inner surface of a back cover of the jet assembly housing during operation of the jet assembly such that a shaft member(s) and/or a bearing(s) is/are not required for rotation of the magnetic impeller.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: May 7, 2019
    Assignee: Luraco, Inc.
    Inventors: Kevin Le, Thanh Le
  • Patent number: 10254661
    Abstract: A wafer transfer system for use in a photolithography system including a wafer storage apparatus, a pre-alignment apparatus, a buffer stage and a wafer stage is disclosed, which includes: a dual-arm robot, configured to take a wafer to be exposed from the wafer storage apparatus and transfer it onto the pre-alignment apparatus and further configured to remove an exposed wafer from the buffer stage and place it back into the wafer storage apparatus; a wafer-loading linear robot, configured to transfer a pre-aligned wafer onto the wafer stage; and a wafer-unloading linear robot, configured to transfer the exposed wafer onto the buffer stage. The dual-arm robot, the wafer-loading linear robot and the wafer-unloading linear robot can operate in parallel so as to achieve time savings in the wafer transfers.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: April 9, 2019
    Inventors: Kai Liu, Songli Hu, Jie Jiang
  • Patent number: 10246117
    Abstract: A hand-driven, wheeled carrier deceleration device, applied to an axle of a hand-driven, wheeled carrier, is introduced and has a wheel, driven gear, reluctance motor and resistive component. The wheel, pivotally disposed at the axle, has a drive gear which rotates together with the wheel. The driven gear, disposed beside the axle, meshing with and driven by the drive gear, has a connection portion. The reluctance motor, connected to the connection portion and driven by the driven gear, has permanent magnets and metal elements. The metal elements and permanent magnets are arranged annularly. The metal elements rotate relative to the permanent magnets. The resistive component electrically connects to the permanent magnets. Therefore, a driving force exerted on the hand-driven, wheeled carrier is partially offset by reluctance to effectively slow down the hand-driven, wheeled carrier.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: April 2, 2019
    Inventors: Li-Sheng Chien, Chien-Chang Ho
  • Patent number: 10218253
    Abstract: The invention relates to an adjustable magnetic coupling assembly for coupling of a first rotary shaft and a second rotary shaft, the magnetic coupling assembly comprising a first and second rotary hub connectable to the first shaft and second shaft, respectively and a central shaft, a first and a second rotatable inductor rotor connected to the central shaft, the inductor rotors being configured to be rotated by the central shaft and to be movable in axial direction along the central shaft by a positioning mechanism and a rotatable central magnet rotor connected to the second rotary hub and arranged centrally between the first and second rotatable inductor rotor. The assembly further comprises a positioning mechanism coupled to the first and second rotatable inductor rotors and configured to selectively move the inductor rotors to adjust the axial distances between the magnet rotor and the respective inductor rotor.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: February 26, 2019
    Assignee: Zytec Technologies B.V.
    Inventors: Robert Lalesse, Edwin Osterloh, Dirk Geert Van Der Bijl, Karel Vaclav Mucek
  • Patent number: 10208755
    Abstract: An electrical submersible pump assembly has a magnetic coupling between the motor shaft and the pump shaft. The coupling includes motor shaft disks mounted to the motor shaft, each having upward and downward facing disk surfaces joined by an outward facing disk cylindrical surface. Motor shaft magnets are mounted in each of the disk cylindrical surfaces and in the upward and downward facing disk surfaces. A pump shaft rotor mounted to the pump shaft has annular bands axially separated from each other by recesses into which the disks extend. Rotor magnets are mounted in each of the recess cylindrical surfaces and in upward and downward facing band surfaces. The magnets in the recesses interact with the magnets on the disks.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: February 19, 2019
    Assignee: Baker Hughes, a GE Company, LLC
    Inventors: Ryan P. Semple, Arturo L. Poretti, David Tanner
  • Patent number: 10141827
    Abstract: The present invention is a machine in which the repulsion and attraction forces of moving electromagnets are utilized to power a series of linkages that ultimately turn a crank. The motor is controlled by an external computer system which distributes an electric current among the electromagnets. In order to reverse the polarities of the electromagnets, the direction of the current will be rapidly changing. This polarity reverse causes electromagnets to repel and attract. The magnets then oscillate along two swing arms that once swung because of both polarity attraction and repulsion, activate the linkages.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: November 27, 2018
    Inventors: Benjamin Ishak, Carter Ishak, Alec Ishak, Donald Vance
  • Patent number: 10095187
    Abstract: Watch with a timepiece movement, a resonator mechanism, including a magnetic escapement mechanism including an escape wheel set including a magnetized track, with a succession of areas according to a scrolling period in which its magnetic features are repeated, each area including an increasing magnetic field ramp followed by a magnetic field barrier with an increasing field and of higher field gradient that that of the ramp, the track includes a continuous, closed magnetic layer over the entire periphery of the escape wheel set, of constant thickness and variable width, whose geometry defines these magnetic field ramps and barriers, this escape wheel set cooperating with a sprung balance via a pivoting magnetic stop member comprising a pole piece arranged to cooperate alternately with an internal track and an external track of the magnetic layer.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: October 9, 2018
    Assignee: The Swatch Group Research and Development Ltd
    Inventors: Gianni Di Domenico, Dominique Lechot, Jerome Favre, Benoit Legeret, Davide Sarchi
  • Patent number: 10075038
    Abstract: A power generation input device includes a rotational magnet body that has a magnet, an N-pole member placed near the N pole of the magnet, and an S-pole member placed near the S-pole of the magnet, the rotational magnet body being supported so as to be rotatable around a rotational center line; a magnetic member; coils; and a manipulation body. The N-pole member has an N-pole end, which extends in a direction more away from the rotational center line than the end of the magnet. The S-pole member has an S-pole end, which extends in a direction more away from the rotational center line than the end of the magnet. The N-pole end and S-pole end are oppositely disposed in a plane parallel to the rotational center line with a gap intervening between them, the gap extending in a direction inclined with respect to the rotational center line.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: September 11, 2018
    Assignee: ALPS ELECTRIC CO., LTD.
    Inventor: Katsutoshi Suzuki
  • Patent number: 9997986
    Abstract: A rotatable magnetic coupler includes disc carrying, circumferentially spaced magnets arranged in rows on a first side of the disc. The magnets are oriented such that one pole of a first magnetic polarity from each magnet faces outwardly from the disc rotation axis while the other pole of a second magnetic polarity for each magnet faces inwardly toward the axis of rotation. The inner row magnets are preferably of lesser height than the outer row magnets to intensify a virtual gear-coupling effect in the magnetic field lines. A magnetic coupling is formed when two such couplers are rotatably mounted sufficiently close to one another that their magnetic fields are coupled together, such that rotation of one coupler rotatably drives the second coupler.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: June 12, 2018
    Inventor: James Haggard
  • Patent number: 9985513
    Abstract: A magnetic transmission apparatus is disclosed, wherein the magnetic transmission apparatus includes a still part (4), a first rotating shaft (81), a second rotating shaft (82), a first rotating part (1), a second rotating part (2), and a third rotating part (3); the first rotating part (1) is rigidly connected with the first rotating shaft (81); the second rotating part (2), the third rotating part (3) are fixed on the second rotating shaft (82); the first rotating part (1), the second rotating part (2), and the third rotating part (3) are successively distributed along an axial direction; the still part (4) includes a magnetic regulation seat (41) and a magnetic regulation ring (42); the second rotating part (2) is located inside the magnetic regulation ring (42); the first rotating part (1) includes a first iron core (11), a first permanent magnet (12), and a first support part (811); the second rotating part (2) includes a second iron core (21), and a second permanent magnet (22); the third rotating part
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: May 29, 2018
    Inventors: Linni Jian, Yujun Shi, Jin Wei
  • Patent number: 9954405
    Abstract: A magnetic rotor arrangement is provided, having a primary rotor including an array of magnets arranged to provide alternating polarity around the outside of the primary rotor and at least one auxiliary rotor including an array of magnets arranged to provide alternating polarity around the outside of the auxiliary rotor. The primary rotor and each auxiliary rotor are arranged such that when the primary rotor is rotated, the rotation of the primary rotor magnetically induces rotation of each auxiliary rotor.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: April 24, 2018
    Inventor: Evan Levy
  • Patent number: 9948169
    Abstract: A repulsive force conversion drive system for centrifugal force conversion to drive a load. A operational load to be driven by movement and provide external power due to movement of the operational load. A rotary repulsive force conversion drive connected to the operational load, such that the operational load moves in a first linear direction due to centrifugal force of rotating mass of the rotary repulsive force conversion drive. A linear repulsive force conversion drive connected to the operational load, the linear repulsive force conversion drive connected to the operational load such that the operational load moves is a second linear direction that is opposite the first linear direction on command from the linear repulsive force conversion drive.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: April 17, 2018
    Inventor: Sei-Joo Jang
  • Patent number: 9921546
    Abstract: The timepiece mechanism comprises a rotating wheel set, a support element, a pivoting member mounted on the support element and magnetic return means for returning one portion of the pivoting member against a surface of the rotating wheel set. The return means comprise a first magnet carried by the pivoting member and a second magnet carried by the support element. The first and second magnets are arranged such that, in normal operation, the interaction of their respective magnetic fields generates a magnetic force oriented to return said pivoting member portion towards said rotating wheel surface. At least one of the first and second magnets is arranged to permit reversal of its polarity, preferably with the aid of a tool, and thereby of the direction of the magnetic force acting on the pivoting member, said magnetic force then tending to move said pivoting member portion away from said rotating wheel set surface, which makes it easy to handle the various elements of the timepiece mechanism.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: March 20, 2018
    Assignee: Montres Breguet S.A.
    Inventors: Benoit Legeret, Davide Sarchi, Sylvain Dauby, Alain Zaugg
  • Patent number: 9878193
    Abstract: A linear displacement damper structure includes a screw shaft, a metallic disk, a screw barrel, a controlling member, and a driving member. The screw shaft is fixed in a position, connected to the metallic disk, and threaded with the screw barrel. The screw barrel is connected to an external device and driven by the external device to perform a linear displacement along a length direction of the screw shaft relative to the screw shaft, so that the screw shaft drives the screw shaft and the metallic shaft. The controlling member has a permanent magnet and is disposed near to the metallic disk, so that the metallic disk generates a magnetic resistance to reduce the rotation speed of the metallic disk. The driving member drives the controlling member to move to change a distance between the controlling member and the metallic disk to adjust the magnitude of the magnetic resistance.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: January 30, 2018
    Assignee: Singularity Ltd.
    Inventor: Chia Min Lai
  • Patent number: 9866088
    Abstract: A generator and clutch assembly is disclosed for use in a vehicle and includes a rotatable input, an electric generator in a generator housing, a clutch rotor by driven by the rotatable input, and an electric clutch and brake assembly which may be integrated with the generator housing. A field coil may be mounted to an external surface of the generator housing. The generator and clutch may be offset and connected by means of a transfer system having a transfer housing, wherein a field coil is mounted to an external surface of the transfer housing.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: January 9, 2018
    Assignee: Hydro-Gear Limited Partnership
    Inventors: Raymond Hauser, Scott W. Keller
  • Patent number: 9851264
    Abstract: The supporting device (10) includes: a body (14), designed to be mounted on an enclosure of a calorimeter, an end-fitting (34) for supporting the measurement cell (12), including elements (36) for fastening the measurement cell (12) on that supporting end-fitting (34), and fluid flow members in the measurement cell (12), able to control the pressure in that measurement cell (12).
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: December 26, 2017
    Inventors: Jean-Philippe Stephane Torre, Frederic Cedric Plantier, Laurent Christian Noel Marlin
  • Patent number: 9831743
    Abstract: A machine having two co-axial and relatively rotatable rotors and a coaxial stator or housing with respect to which both rotors are rotatable is provided wherein two bearing arrangements mutually support the two rotors with respect to each other and with respect to the stator or housing. One of the bearing arrangements comprises multiple support bearings angularly spaced apart with respect to the axis of rotation of the rotors relative to the stator with the support bearings each having an axle or shaft that is fixed relative to one of the rotors or the stator. Each support bearing cooperates with a raceway provided on a concentric adjacent rotor or stator. The machine may be an electromechanical machine such as a wind turbine in which rotational movement of one of the rotors relative to the other and relative to the stator generates electrical energy.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: November 28, 2017
    Inventor: Johan Nico Stander