Plural Magnets Patents (Class 335/306)
  • Patent number: 10356530
    Abstract: An electronic device and a loudspeaker are provided. The loudspeaker includes: a hollow frame for being connected to the electronic device, a vibration means for producing sound through vibration, a voice coil for driving the vibration means and a magnetic circuit having a magnetic property and arranged at a lower end of an interior of the hollow frame, wherein an end face opening is provided at an upper end of the hollow frame; the vibration means covers the end face opening; one end of the voice coil is connected to the vibration means, and the other end can enter a gap of the magnetic circuit to perform reciprocating motion; the vibration means includes a vibrating diaphragm and a top dome fixedly installed in the middle of the vibrating diaphragm; an outer edge of the vibrating diaphragm is connected to an edge of the end face opening.
    Type: Grant
    Filed: September 6, 2015
    Date of Patent: July 16, 2019
    Assignee: SHANDONG GETTOP ACOUSTIC CO., LTD.
    Inventor: Jie Hou
  • Patent number: 10312718
    Abstract: A levitation system that allows a mobile terminal to levitate from the bottom using the magnetic levitation principle and to provide a system for levitating a mobile terminal, which enables the mobile terminal to be wirelessly charged in a state in which the mobile terminal levitates, is provided.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: June 4, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Sangwook Hahn, Inseok Yoo, Taehyun Kim, Sukho Hong, Byunghwa Lee
  • Patent number: 10310037
    Abstract: According to some aspects, a magnetic resonance imaging system comprising a B0 magnet configured to produce a B0 magnetic field for the magnetic resonance imaging system, the B0 magnet comprising at least one first B0 magnet to produce a magnetic field to contribute to the B0 magnetic field for the magnetic resonance imaging system, at least one second B0 magnet to produce a magnetic field to contribute to the B0 magnetic field for the magnetic resonance imaging system, wherein the at least one first B0 magnet and the at least one second B0 magnet are arranged relative to one another so that an imaging region is provided there between, a surface configured to support a patient anatomy within the imaging region, and a positioning member coupled to the B0 magnet and configured to allow the B0 magnet to be tilted to position the planar surface at a corresponding incline.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: June 4, 2019
    Assignee: Hyperfine Research, Inc.
    Inventors: Christopher Thomas McNulty, Michael Stephen Poole
  • Patent number: 10222101
    Abstract: A heat pump includes a magnet assembly which creates a magnetic field, and a regenerator housing which includes a body defining a plurality of chambers, each of the plurality of chambers extending along a transverse direction orthogonal to the vertical direction. The heat pump further includes a plurality of stages, each of the plurality of stages including a magnetocaloric material disposed within one of the plurality of chambers and extending along the transverse direction between a first end and a second end.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: March 5, 2019
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Michael Goodman Schroeder, David G. Beers, Brian Michael Schork, Michael Alexander Benedict
  • Patent number: 10208303
    Abstract: A solid-core ring-magnet having one or more cavities is provided. The magnet can have an overall cylindrical shape or a rectangular-prism shape. In either case, a portion of cavity walls of the magnet are ring shaped, causing the magnetic field lines to emanate from the magnet in the shape of a ring. The diameter of the ring shaped cavities can be constant throughout, constant through a portion of the cavity, variant throughout, or variant through a portion of the cavity. The cavities open to the end of the magnet, and terminate toward the core of the magnet. Also provided are systems and kits having solid-core ring-magnets. Methods of purifying a macromolecule using the solid-core ring-magnets are also provided.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: February 19, 2019
    Assignee: Alpaqua Engineering, LLC
    Inventor: Olaf Stelling
  • Patent number: 10104212
    Abstract: A headset is described that utilizes magnetic frictional couplers. A coupler includes a first member having a first engagement surface and a second member having a second engagement surface disposed for relative positioning of the first and second members along a line of adjustment. One or more magnetic elements are arranged on the first and second members to establish a magnetic flux between the first engagement surface and the second engagement surface, and thereby establishing a frictional force tending to hold the relative positions of the first and second members. The magnetic flux varies as a function of relative position of the first and second members along the line of adjustment, and has peaks at a plurality of detent positions along the line of adjustment.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: October 16, 2018
    Assignee: Plantronics, Inc.
    Inventors: Jacob T Meyberg, Barry J Lee, John Kelley
  • Patent number: 10047980
    Abstract: A heat pump includes a magnet assembly which creates a magnetic field, and a regenerator housing which includes a body defining a plurality of chambers, each of the plurality of chambers extending along a transverse direction orthogonal to the vertical direction. The heat pump further includes a plurality of stages, each of the plurality of stages including a magnetocaloric material disposed within one of the plurality of chambers and extending along the transverse direction between a first end and a second end.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: August 14, 2018
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Michael Goodman Schroeder, David G. Beers, Brian Michael Schork, Michael Alexander Benedict
  • Patent number: 10006672
    Abstract: A heat pump includes a magnet assembly which creates a magnetic field, and a regenerator housing which includes a body defining a plurality of chambers, each of the plurality of chambers extending along a transverse direction orthogonal to the vertical direction. The heat pump further includes a plurality of stages, each of the plurality of stages including a magnetocaloric material disposed within one of the plurality of chambers and extending along the transverse direction between a first end and a second end.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: June 26, 2018
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Michael Alexander Benedict, David G. Beers, Brian Michael Schork, Michael Goodman Schroeder
  • Patent number: 10006674
    Abstract: A heat pump includes a magnet assembly which creates a magnetic field, and a regenerator housing which includes a body defining a plurality of chambers, each of the plurality of chambers extending along a transverse direction orthogonal to the vertical direction. The heat pump further includes a plurality of stages, each of the plurality of stages including a magnetocaloric material disposed within one of the plurality of chambers and extending along the transverse direction between a first end and a second end.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: June 26, 2018
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Michael Alexander Benedict, David G. Beers, Brian Michael Schork, Michael Goodman Schroeder
  • Patent number: 9883910
    Abstract: A device for manipulating a magnetic coupling force across tissue in response to a monitored coupling force is described. The device includes a magnetic field source assembly, a positioning assembly operatively connected to the magnetic field force assembly, and a magnetic coupling force monitor. The magnetic field source assembly includes magnets that provide an external magnetic field source for providing a magnetic field across tissue. The positioning assembly adjusts the position of the magnetic field source. The magnetic field creates a magnetic coupling force between the external magnetic field source and an object positioned in use in a patient during a procedure, wherein the object has or is associated with an internal magnetic field.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: February 6, 2018
    Assignee: Eticon Endo-Surgery, Inc.
    Inventors: Sean P. Conlon, Victor C. Moreno
  • Patent number: 9779864
    Abstract: Techniques related to magnetic latching are described herein. The techniques may include a first magnet formed in a curve, and a second magnet formed in the curve. A pole of the first magnet and a pole of the second magnet are directed inward toward a center line of the curve.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: October 3, 2017
    Assignee: Intel Corporation
    Inventor: Jason Brand
  • Patent number: 9659696
    Abstract: The invention relates to the field of the protection of security documents such as for example banknotes and identity documents against counterfeit and illegal reproduction. In particular, the invention relates to magnetic-field-generating devices which produce positively curved magnetic field lines in a concave fashion. The invention also relates to the use of these magnetic-field-generating devices for producing optical effect layers OEL which exhibit the optical impression of a positive rolling bar effect and to processes using these magnetic-field-generating devices, e.g. in the field of document security.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: May 23, 2017
    Assignee: SICPA HOLDING SA
    Inventors: Evgeny Loginov, Mathieu Schmid, Claude Alain Despland, Pierre Degott
  • Patent number: 9577599
    Abstract: A filter device for filtering electrical currents or electromagnetic interference, particularly common-mode interference. The filter device has a soft-magnetic core with a passage, a printed circuit board with a plurality of electronic components, and a holding section. The holding section of the printed circuit board can be put through the core passage wherein the passage is designed such that the holding section and the electronic components arranged on the holding section can be put through the passage.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: February 21, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Reinhold Berberich, Jörg Dammköhler
  • Patent number: 9555469
    Abstract: An aluminum alloy casting free from crack-causing needle-shaped crystallized substances, and an apparatus and a method for producing a slide member excellent in mechanical properties such as abrasion resistance are provided. A melt of an iron-containing aluminum alloy poured into a vessel in the completely liquid state is vibrated by a vibrating needle of a vibration applying unit, and then a core is inserted into the melt to cool the melt, whereby the aluminum alloy casting is produced as a sleeve of a slide member. The vibrating step is carried out at a frequency of 20 to 1000 Hz, and is continued until just before the melt is cooled to the solid-liquid coexisting temperature region.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: January 31, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takashi Idegomori, Akio Shimoda
  • Patent number: 9545498
    Abstract: A magnetically-guided catheter includes a tip positioning magnet in the distal electrode assembly configured to interact with externally applied magnetic fields for magnetically-guided movement. A magnetically-guided mapping catheter includes an electrically-conductive capsule in the form of a casing that includes a distal ablation surface and isolates the positioning magnet from bio-fluids to prevent corrosion. An open irrigation ablation catheter includes an isolated manifold that isolates the positioning magnet from contact with irrigation fluid to prevent corrosion.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: January 17, 2017
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventor: Troy T. Tegg
  • Patent number: 9515370
    Abstract: An antenna assembly is provided. The antenna assembly includes at least one foam member that is fabricated from a homogenous material, wherein the foam member includes a first surface and a second surface. At least one conductive plate including a first conductive plate is coupled to the foam member first surface. The foam member second surface is configured to couple to a second conductive plate or receive a conductive coating thereon to facilitate at least one electromagnetic wave to be channeled through the antenna assembly in a substantially single direction.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: December 6, 2016
    Assignee: The Aerospace Corporation
    Inventor: Gordon Z. Rollins
  • Patent number: 9470437
    Abstract: Magnetothermal pump devices are provided. Such devices can operate on the principle of thermally induced switching between open and closed states of a magnetic switch to generate mechanical oscillations. Exemplary devices provided include a thermal gradient and a magnet with a Curie temperature at or within this gradient. When the soft magnet is below the Curie temperature, it has sufficient magnetic force to bind a hard magnet at the hot side of the gradient. Heating of the magnet at the hot side causes it to exceed its Curie temperature, resulting in loss of magnetic attraction. At this stage, a restorative force exceeds the magnetic force, causing the magnet to shift to the cold side of the gradient, which oscillations can be used to pump fluid. Any magnetic transition that results in a change in the vector nature of the magnetic moment of the soft magnetic material can be employed.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: October 18, 2016
    Assignee: Prime Photonics, LC
    Inventors: David Todd Gray, John Moore Coggin
  • Patent number: 9429456
    Abstract: A magnetization device with a magnetic field which is generated by permanent magnets for variable magnetization of a medium flowing through a tube over a magnetization distance along the longitudinal axis of the tube. The magnetization device improves the quality of the results relative to known nuclear magnetic resonance measurement and analysis methods in that the magnetic field in the medium has a single direction over the magnetization distance.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: August 30, 2016
    Assignee: Krohne AG
    Inventors: Marco Leendert Zoeteweij, Olaf Jean Paul Bousché, Cornelis Johannes Hogendoorn, Ariël de Graaf, Jan Teunis Aart Pors, Jan-Willem Ramondt
  • Patent number: 9406424
    Abstract: An improved system and method for moving an object includes a first correlated magnetic structure associated with a first object and a second correlated magnetic structure associated with a second object. The first and second correlated magnetic structures are complementary coded to achieve a peak attractive tensile force and a peak shear force when their code modulos are aligned thereby enabling magnetic attachment of the two objects whereby movement of one object causes movement of the other object as if the two objects were one object. Applying an amount of torque to one correlated magnetic structures greater than a torque threshold causes misalignment and decorrelation of the code modulos enabling detachment of the two objects. The number, location, and coding of the correlated magnetic structures can be selected to achieve specific torque characteristics, tensile force characteristics, and shear force characteristics.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: August 2, 2016
    Assignee: Correlated Magnetics Research, LLC
    Inventors: Larry W. Fullerton, Mark D. Roberts
  • Patent number: 9382984
    Abstract: A positioning for positioning a measuring element (2) and a measuring device with such a positioning device have an object of providing a positioning device for positioning a measuring element or a measuring device with a measuring element and a positioning device that is a simplification compared to the prior art and that meets the requirements for positioning with respect to accuracy and reproducibility. The object is met in the positioning device in that three wheels are provided (3, 4, 5), which are designed as a ring gear (3), a sun and a planetary gear (5). The ring has an interior space (6) in which the sun and the planetary are arranged. Furthermore, the planetary is engaged with the sun and with the ring gear (3).
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: July 5, 2016
    Assignee: KROHNE Messtechnik GmbH
    Inventors: Christoph Baer, Sebastian Baer, Thomas Musch
  • Patent number: 9369185
    Abstract: A near-field magnetic induction system includes a metallic structure, an amorphous metal barrier and a near-field magnetic induction device. The device includes an antenna coupled to the amorphous metal barrier and a circuit electrically coupled to the antenna. In use, the antenna is separated from the metallic structure by the amorphous metal barrier. The amorphous metal barrier may be integrated with the near-field magnetic induction device or with the metallic structure. Inductive coupling with the near-field magnetic induction device may be used, for example, in communication or energy transfer applications such as RFID tags and inductive chargers.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: June 14, 2016
    Assignee: STMICROELECTRONICS, INC.
    Inventor: Gregory Proehl
  • Patent number: 9336935
    Abstract: A levitation device including an object levitatable at a predetermined position, wherein the object comprises a spinning magnet, the spinning magnet having a substantially horizontal spin axis defining an axial direction and the spinning magnet having a magnetization direction parallel to the spin axis, the device further comprising: a pusher magnet arrangement configured to produce a magnetic field at the predetermined position that is in the opposite direction to the magnetization direction of said spinning magnet; a lifter magnet arrangement lower than and to either side of the predetermined position, having a magnetization direction parallel to the magnetization direction of the spinning magnet, and having a recess under the predetermined position; and a puller magnet arrangement above said predetermined position and having a magnetization direction antiparallel to the magnetization direction of the spinning magnet.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: May 10, 2016
    Inventor: Maximilian Michaelis
  • Patent number: 9327136
    Abstract: A magnetic device for magnetic therapy, the device comprising a magnetic drum having an inner surface and an outer surface, a plurality of permanent magnets, a hollow safety sleeve, and an electric motor for powering the magnetic device by means of a power source. The plurality of permanent magnets is positioned on the inner surface of the magnetic drum so as to form a helical pattern thereon. The magnetic drum is positioned in the hollow safety sleeve and connected to an output shaft of the electric motor by means of a plurality of bearings. The electric motor rotates the magnetic drum and the plurality of permanent magnets to produce an oscillating magnetic field for use in magnetic therapy.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: May 3, 2016
    Assignee: E-MERGENCE TECHNOLOGIES, INC.
    Inventor: Sean Hedgecock
  • Patent number: 9276505
    Abstract: An electromagnet within an enclosure. The enclosure is capable of elevating the electromagnet to various heights and additionally horizontally repelling the elevated electromagnet from one elevated position to the next. The heights of the elevated electromagnet may vary depending on the voltage of the base electromagnets, the polarities of the electromagnets and the desired height of the elevated electromagnet.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: March 1, 2016
    Inventor: William Redvers Belisle
  • Patent number: 9247898
    Abstract: Embodiments of the present invention provide magnetic lancet devices and methods for driving a lancet. For example, a magnetic lancet device may include a driving mechanism having a plurality of magnets and a lancet coupled to the driving mechanism. A magnetic interaction between the plurality of magnets is configured to drive the lancet from an engaged position to a penetrating position.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: February 2, 2016
    Assignee: DYNAMIC MAGNETICS, LLC
    Inventor: Richard C. Paschal
  • Patent number: 9183997
    Abstract: A switch has a housing and an actuating element retained on a travel path in the housing. A restoring member (4) provides a restoring force urging the actuator to an off position at one end of the travel path. A resistance generator provides a resistance force which opposes the restoring force when the actuator is in a fully actuated position to reduce the holding force require to keep the actuating element in the fully actuated position.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: November 10, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Gerhard Fangmann, Martin Koepsell
  • Patent number: 9111673
    Abstract: An improved system and method for moving an object includes a first correlated magnetic structure associated with a first object and a second correlated magnetic structure associated with a second object. The first and second correlated magnetic structures are complementary coded to achieve a peak attractive tensile force and a peak shear force when their code modulos are aligned thereby enabling magnetic attachment of the two objects whereby movement of one object causes movement of the other object as if the two objects were one object. Applying an amount of torque to one correlated magnetic structures greater than a torque threshold causes misalignment and decorrelation of the code modulos enabling detachment of the two objects. The number, location, and coding of the correlated magnetic structures can be selected to achieve specific torque characteristics, tensile force characteristics, and shear force characteristics.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: August 18, 2015
    Assignee: Correlated Magnetics Research, LLC.
    Inventors: Larry W. Fullerton, Mark D. Roberts
  • Patent number: 9061761
    Abstract: An enclosure to enclose the vertical electromagnetic repulsive elevation and manipulation of electromagnets is presented. The enclosure is capable of elevating the electromagnet to various heights and additionally horizontally repelling the elevated electromagnet from one elevated position to the next. The heights of the elevated electromagnet may vary depending on the voltage of the base electromagnets, the polarities of the electromagnets and the desired height of the elevated electromagnet.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: June 23, 2015
    Inventor: William Redvers Belisle
  • Patent number: 9049987
    Abstract: A device for manipulating a magnetic coupling force across tissue in response to a monitored coupling force is described. The device includes a magnetic field source assembly, a positioning assembly operatively connected to the magnetic field force assembly, and a magnetic coupling force monitor. The magnetic field source assembly includes magnets that provide an external magnetic field source for providing a magnetic field across tissue. The positioning assembly adjusts the position of the magnetic field source. The magnetic field creates a magnetic coupling force between the external magnetic field source and an object positioned in use in a patient during a procedure, wherein the object has or is associated with an internal magnetic field.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: June 9, 2015
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Sean P. Conlon, Victor C. Moreno
  • Publication number: 20150137922
    Abstract: A magnetic circuit that forms an arc-shaped magnetic field space is provided. Of two magnets constituting a first magnetic circuit 10, a first magnetic pole 1 is provided with a first yoke 11 that is arc-shaped in planar view, a first magnet 13 that is arc-shaped in planar view and a magnetic pole piece 15. On the other hand, a second magnetic pole 2 is provided with a second yoke 21 that is arc-shaped in planar view, a second magnet 23 that is arc-shaped in planar view and a magnetic pole piece 25. The first magnetic pole piece 15 and the second magnetic pole piece 25 are disposed so as to be opposed to each other while being separated from each other. The first magnet 13 and the second magnet 23 are formed by arranging a plurality of small magnets.
    Type: Application
    Filed: June 26, 2013
    Publication date: May 21, 2015
    Applicant: Hitachi Metals, Ltd.
    Inventors: Eiji Sugiyama, Masaaki Aoki
  • Publication number: 20150137923
    Abstract: A magnetic positioning device is provided that includes a first cup-shape permanent magnet having at least one permanent magnet segment conforming to the first cup-shape, where the first cup-shape permanent magnet has a first polarity, a second cup-shape permanent magnet that includes at least one permanent magnet segment conforming to the second cup-shape, where the second cup-shape permanent magnet segment has a second polarity, where the second cup-shape permanent magnet is disposed concentric to the first cup-shape permanent magnet, where the first polarity is the opposite of the second polarity or the first polarity is the same as the second polarity, where a gap separates the first cup-shape permanent magnet from the second cup-shape permanent magnet, and a connection feature, where the connection feature is disposed on the second cup-shape permanent magnet, where the connection feature is configured to connect a lever arm to the second cup-shape permanent magnet.
    Type: Application
    Filed: November 13, 2014
    Publication date: May 21, 2015
    Inventors: Bob van Ninhuijs, Bart Ludo Jozef Gysen, Jacob Willem Jansen, Elena Andreevna Lomonova
  • Patent number: 9019055
    Abstract: A cylindrical magnetic circuit which is able to prevent deformation of a cylindrical yoke for holding two or more magnets without increasing the thickness of the yoke more than required, and a method of producing such a circuit. A cylindrical magnetic circuit (1) for generating a magnetic field in a space inside of plural annularly placed magnets (2), including: a cylindrical yoke (3) which is placed radially outside the magnets (2) and is fixed to the magnets directly or via an intermediate member or substance; and at least one nonmagnetic member 4 existing between pairs of circumferentially adjacent magnets, and a method for producing the cylindrical magnetic circuit (1).
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: April 28, 2015
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yuhito Doi, Dai Higuchi, Shingo Hashimoto
  • Publication number: 20150102880
    Abstract: A multilevel magnetic system described herein includes first and second magnetic structures that produce a net force that transitions from an attract force to a repel force as a separation distance between the first and second magnetic structures increases. The multi-level magnetic system is configured to maintain a minimum separation distance between a transition distance where the net force is zero and a separation distance at which a peak repel force is produced.
    Type: Application
    Filed: December 20, 2014
    Publication date: April 16, 2015
    Inventors: Larry W. Fullerton, Mark D. Roberts
  • Patent number: 9007157
    Abstract: A magnetic assembly for use in a housing of an electronic device can include a first and a second magnet and a magnetic shield. The magnetic shield can reduce magnetic flux density from the first and the second magnets that can appear on the outside of the housing. A magnetic hinge assembly can include magnets configured to correlate with the first and second magnets. The magnetic hinge can magnetically attach to the housing by cooperating with the first and second magnets with magnets that can be included in the magnetic hinge.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: April 14, 2015
    Assignee: Apple Inc.
    Inventors: Florence W. Ow, Jeremy C. Franklin
  • Publication number: 20150097643
    Abstract: Provided is a combined type RFeB-based magnet, including: a first unit magnet; a second unit magnet; and an interface material that bonds the first unit magnet and the second unit magnet, in which the first unit magnet and the second unit magnet are RFeB-based magnets containing a light rare earth element RL that is at least one element selected from the group consisting of Nd and Pr, Fe, and B, in which the interface material contains at least one compound selected from the group consisting of a carbide, a hydroxide, and an oxide of the light rare earth element RL, and in which an amount of a heavy rare earth element RH that is at least one element selected from the group consisting of Dy, Tb and Ho in the second unit magnet is more than that in the first unit magnet.
    Type: Application
    Filed: September 30, 2014
    Publication date: April 9, 2015
    Applicant: DAIDO STEEL CO., LTD.
    Inventor: Shinobu TAKAGI
  • Publication number: 20150097642
    Abstract: Provided is a combined type RFeB-based magnet, including: two or more unit magnets; and an interface material that bonds bonding surfaces of the unit magnets adjacent to each other, in which each of the unit magnets is an RFeB-based magnet containing a light rare earth element RL that is at least one element selected from the group consisting of Nd and Pr, Fe, and B, in which the interface material contains at least one compound selected from the group consisting of a carbide, a hydroxide, and an oxide of the light rare earth element RL, and in which the combined type RFeB-based magnet contains at least one element selected from the group consisting of Dy, Ho and Tb, and has a nonplanar surface.
    Type: Application
    Filed: September 30, 2014
    Publication date: April 9, 2015
    Applicant: DAIDO STEEL CO., LTD.
    Inventor: Shinobu TAKAGI
  • Publication number: 20150091681
    Abstract: A permanent magnetic coupling device includes an conductor rotor, an permanent magnet rotor and permanent magnets. The permanent magnet rotor includes a magnetic ring. The magnetic ring includes protrusions and recesses arranged alternately, in which first airflow channels are formed between the protrusions and the conductor rotor respectively, and second airflow channels are formed between the recesses and the conductor rotor respectively. A cross-sectional area of each of the second airflow channels is greater than a cross-sectional area of each of the first airflow channels. The permanent magnet rotor further includes cavities disposed at the recesses, and the permanent magnets are engaged into the cavities respectively.
    Type: Application
    Filed: August 15, 2014
    Publication date: April 2, 2015
    Inventors: Hong-Liu ZHU, Tsu-Hua AI, Hong-Cheng SHEU
  • Patent number: 8981887
    Abstract: A magnetic tool-holder, comprising a flexible outer web defining an enclosed area and enclosing an array of solid, rigid magnets. The magnets are regularly interspersed in direction of polarization, so that the nearest neighbors of a magnet having a north pole facing in a first direction all have a north pole facing in a second direction, opposite to the first direction.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: March 17, 2015
    Inventor: Alexander Erlandsson
  • Patent number: 8975991
    Abstract: A magnetic attachment mechanism and method is described. The magnetic attachment mechanism can be used to releasably attach at least two objects together in a preferred configuration without fasteners and without external intervention. The magnetic attachment mechanism can be used to releasably attach an accessory device to an electronic device. The accessory device can be used to augment the functionality of usefulness of the electronic device.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: March 10, 2015
    Inventors: Andrew D. Lauder, Matthew Dean Rohrbach, Daniel J. Coster, Christopher J. Stringer, Florence W. Ow, Jiang Ai, Jonathan P. Ive, Elvis M. Kibiti, John P. Ternus, Sean D. Lubner
  • Publication number: 20150061802
    Abstract: A magnetic field generator (1) comprising first (2) and second (3) identical magnetizing structures mounted opposite and parallel to one another, head-to-tail, and defining at least two air gaps (42, 43). Each magnetizing structure (2) comprises first (4) and second (5) diametrically opposite structurally identical magnetizing assemblies which are arranged on either end of a ferromagnetic central part (6). Each magnetizing assembly (4, 5) comprises a polygonal, uniformly magnetized central magnet (7, 14) and laterally surrounded by a uniformly magnetized magnetic belt (13, 20). The magnetic flux, generated by the generator (1), forms a single loop concentrated through the air gaps (42, 43).
    Type: Application
    Filed: February 21, 2013
    Publication date: March 5, 2015
    Applicant: COOLTECH APPLICATIONS, S.A.S.
    Inventors: Christian Muller, Magali Chaussin
  • Publication number: 20150061680
    Abstract: There are disclosed magnet arrays and methods for generating magnetic fields. In embodiments magnet arrays comprise a plurality of polyhedral magnets arranged in a lattice configuration and at least partly enclosing a testing volume, the magnet array having an associated magnetic field with a designated field direction {circumflex over (v)}, wherein the magnetization direction {circumflex over (m)} of an individual polyhedral magnet located at a displacement vector {right arrow over (r)} from an origin point in the testing volume is determined by the formula: {circumflex over (m)}=(2({circumflex over (v)}·{right arrow over (r)}){right arrow over (r)}?({right arrow over (r)}·{right arrow over (r)}){circumflex over (v)})/{right arrow over (r)}·{right arrow over (r)}. In embodiments the arrays are comprised in magnetic resonance machines. In embodiments the polyhedral magnets are truncated cubes or are rhombic dodecahedra.
    Type: Application
    Filed: June 2, 2014
    Publication date: March 5, 2015
    Applicant: NANALYSIS CORP.
    Inventor: Garett M. Leskowitz
  • Patent number: 8963668
    Abstract: An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: February 24, 2015
    Assignee: Correlated Magnetics Research LLC
    Inventors: Larry W Fullerton, Mark D Roberts
  • Publication number: 20150048913
    Abstract: A magnetic system is provided that involves field emission structures having magnetic field sources, magnetically active intermediate layers, and magnetically inactive intermediate layers. The magnitudes, polarities, and positions of the magnetic field sources may be configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to their relative alignment and separation distance.
    Type: Application
    Filed: October 13, 2014
    Publication date: February 19, 2015
    Applicant: Correlated Magnetics Research, LLC.
    Inventors: Larry W. Fullerton, Mark D. Roberts
  • Patent number: 8957751
    Abstract: A shunt plate is provided that is associated with a first side of a multi-pole magnetic structure. The shunt plate provides a magnetic short between opposite polarity magnetic sources on the first side of said magnetic structure, the magnetic short causing a magnetic flux of said opposite polarity magnetic sources to be routed from said first side of the magnetic structure through said magnetic structure to the second side of said magnetic structure. The thickness of the shunt plate is selected by determining the integrated flux across a magnetic source of the magnetic structure such that the corresponding flux density in the shunt plate does not substantially exceed the flux density saturation level of a cross section of the shunt plate.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: February 17, 2015
    Assignee: Correlated Magnetics Research LLC
    Inventors: Larry W. Fullerton, Mark D. Roberts
  • Patent number: 8953310
    Abstract: A cover is described that is magnetically attached to a tablet device. The cover includes at least as flap. In the described embodiment, the flap includes a plurality of segments where the first segment includes a first plurality of edge attach magnets arrayed along a first edge of the flap and where a second segment includes a second plurality of edge attach magnets arrayed along a second edge of the flap opposite the first edge.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: February 10, 2015
    Inventors: Samuel G. Smith, Jared A. Sartee, Florence W. Ow, Andrew D. Lauder, Jeremy C. Franklin
  • Patent number: 8947185
    Abstract: A multilevel magnetic system described herein includes first and second magnetic structures that produce a net force that transitions from an attract force to a repel force as a separation distance between the first and second magnetic structures increases. The multi-level magnetic system is configured to maintain a minimum separation distance between a transition distance where the net force is zero and a separation distance at which a peak repel force is produced.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: February 3, 2015
    Assignee: Correlated Magnetics Research, LLC
    Inventors: Larry W. Fullerton, Mark D. Roberts
  • Patent number: 8947170
    Abstract: According to one embodiment, a spin-torque oscillator includes a non-magnetic unit, one or more first magnetic unit, and a second magnetic unit. The non-magnetic unit is formed of a non-magnetic body. The one or more first magnetic unit is connected to the non-magnetic unit and generates a pure spin current indicating the flow of the electron spin that does not accompany an electric charge current. The second magnetic unit is connected to the non-magnetic unit in a manner such that a distance between the second magnetic unit and the first magnetic unit is shorter than a spin diffusion length indicating a distance that an electronic spin polarization is maintained in the non-magnetic unit. The second magnetic unit oscillates by the pure spin current.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: February 3, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tao Yang, Kiwamu Kudo, Tazumi Nagasawa, Hirofumi Suto, Rie Sato, Koichi Mizushima
  • Patent number: 8941455
    Abstract: A method of and attachment system for securing and manipulating attractive objects upon an interior vehicular surface, utilizing at least one coded magnet to selectively attach/retain the objects, and provide various other functions, including aiding in alignment, orientation, and retrieval of the objects, and activating an associated sub-system.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: January 27, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Paul W. Alexander, Paul E. Krajewski, Roy J. Mathieu, Anthony L. Smith, Nancy L. Johnson, Thomas Wolfgang Nehl, Mark A. Voss, Kevin Krenn
  • Publication number: 20150008999
    Abstract: A magnetic assembly includes a cylindrical magnet 1 having opposing magnetic poles disposed at respective first and second faces 2 and 3. A cup-shaped ferrous metal housing 4 forms a magnetic shield around the magnet 1 enclosing the second face 3, with an end face 7 continuously surrounding the first face 2. A ring magnet 8 surrounds the housing 4 with opposing magnetic poles disposed at respective first and second faces 9 and 10 with the first face 9 surrounding the end face 7 of the housing. The ring magnet 8 is enclosed within a further ferrous metal housing 11 forming a magnetic shield around the ring magnet and enclosing the second face 10. The further housing 11 has an end face 14 which continuously surrounds the first face 9 of the ring magnet. The end faces of the housings 4 and 11 are proximate to the respective first faces of the magnet 1 and the ring magnet 8 such that these faces together form a planar magnetically active surface.
    Type: Application
    Filed: July 1, 2014
    Publication date: January 8, 2015
    Applicant: BIOFLOW LIMITED
    Inventor: Markland Paul
  • Patent number: 8928437
    Abstract: A magnetic attachment mechanism and method is described. The magnetic attachment mechanism can be used to releasably attach at least two objects together in a preferred configuration without fasteners and without external intervention. The magnetic attachment mechanism can be used to releasably attach an accessory device to an electronic device. The accessory device can be used to augment the functionality of usefulness of the electronic device.
    Type: Grant
    Filed: September 15, 2012
    Date of Patent: January 6, 2015
    Inventors: Andrew Lauder, Matthew D. Rohrbach, Daniel J. Coster, Christopher J. Stringer, Florence W. Ow, Jiang Ai, Jonathan P. Ive, Elvis M. Kibiti, John P. Ternus, Sean D. Lubner