Electromagnet Type (e.g., Electromagnetic Chuck) Patents (Class 335/289)
  • Patent number: 11123818
    Abstract: Method for joining a first and a second steel blanks, at least one of the blanks comprising aluminium. The method comprises providing a support being made of a magnetic material for each blank, the supports being arranged distanced apart by a central space; providing a coil winding around one support, arranging the first blank on one support and the second blank on the other support, such that a butt end of the first blank that is facing the second blank is brought into contact with a butt end of the second blank that is facing the first blank defining a contacting area that closes a path for magnetic flux. The method further comprises applying a laser beam onto the contacting area, while applying an alternating current to the coil winding, wherein an alternating magnetic field is created across the contacting area in a direction substantially in-line with the blanks.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: September 21, 2021
    Assignee: AUTOTECH ENGINEERING S.L.
    Inventor: Antoine Riquelme
  • Patent number: 11072048
    Abstract: A magnetic apparatus for anchoring ferrous elements may include a support structure housing a plurality of polar units. The support structure has first and second sides at opposite surfaces. The polar units may include: a coil having a support and a conductive element wound on the support; a first magnetic core with a first coercive value, generating a first magnetic flow oriented in a first magnetic direction; and a plurality of second magnetic cores, each having its own coercive value different from the first coercive value. A first part of the second magnetic cores generates a second magnetic flow oriented in a second magnetic direction. A second part of the second magnetic cores generates a third magnetic flow oriented in a third magnetic direction. The third magnetic direction is parallel or antiparallel to the first magnetic direction and has a different direction with respect to the second magnetic direction.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: July 27, 2021
    Assignee: MAG-AUTOBLOK TECNOMAGNETE S.P.A.
    Inventor: Michele Cardone
  • Patent number: 10903030
    Abstract: Magnetic coupling devices are disclosed which may be configured in at least three states. The various states may be provided through one or more of altering a position of a permanent magnet relative to another permanent magnet and altering a current level in a coil surrounding a permanent magnet.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: January 26, 2021
    Assignee: MAGSWITCH TECHNOLOGY WORLDWIDE PTY LTD.
    Inventors: David H. Morton, Cengiz Kizilkan, Paul J. Karp
  • Patent number: 10869561
    Abstract: A display fixture includes a magnetic focal wall and an auxiliary support member. The magnetic focal wall includes a magnetic panel, which is substantially planar, and a perforated panel, which is substantially planar and defines a plurality of perforations. The magnetic panel defines a front surface. The perforated panel is coupled with the magnetic panel such that the perforated panel extends in a substantially parallel plane with and in front of the magnetic panel. The auxiliary support member is configured to support a product thereon away from the magnetic focal wall and includes a magnet on a rear side thereof sized to fit within any one of the plurality of perforations such that the magnet of the auxiliary member is magnetically coupled with the magnetic panel through one of the plurality of perforations and the auxiliary support member extends forwardly from the perforated panel supported by the magnetic focal wall.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: December 22, 2020
    Assignee: TARGET BRANDS, INC.
    Inventors: Christine Arradondo, Jeremy A. Clark
  • Patent number: 10507510
    Abstract: A metal strip holding device configured to be connected to the die of a stamping system is presented herein. The strip holding device includes a magnetic component and a non-magnetic bracket. The magnetic component has at least one pole shoe. The bracket is configured to be connected to the die. Moreover, the magnetic component is installed into a cavity in the metal bracket.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: December 17, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Thomas M. Foreman
  • Patent number: 9659699
    Abstract: Disclosed herein is a magnetic substance holding device that minimizes residual magnetism by way of employing structures for minimizing reluctance to magnetic flux flow.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: May 23, 2017
    Inventor: Tae Kwang Choi
  • Patent number: 9601250
    Abstract: The invention is directed to a magnetic chuck and a method for producing a magnetic chuck. The magnetic chuck comprises an upper base made of a single piece of magnetic-conductive material and having a top surface, sidewalls extending orthogonally from the top surface, a cavity formed within the upper base with an open end opposite to the top surface and an opposite closed end directed toward the top surface. A plurality of cores extends orthogonally from the top surface and into the cavity, wherein a plurality of permanent magnets is arranged in the cavity. A reversible magnet is arranged between each of the cores and a lower base; and an excitation coil is arranged around the circumference of each reversible magnet. A portion of the cavity between the permanent magnets and the closed end of the cavity is filled with non-magnetic-conductive material.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: March 21, 2017
    Assignee: SOPH INTERNATIONAL LIMITED
    Inventor: Hong Ding
  • Patent number: 9484137
    Abstract: Method and device for self-regulated flux transfer from a source of magnetic energy into one or more ferromagnetic work pieces, wherein a plurality of magnets, each having at least one N-S pole pair defining a magnetization axis, are disposed in a medium having a first relative permeability, the magnets being arranged in an array in which gaps of predetermined distance are maintained between neighboring magnets in the array and in which the magnetization axes of the magnets are oriented such that immediately neighboring magnets face one another with opposite polarities, such arrangement representing a magnetic tank circuit in which internal flux paths through the medium exist between neighboring magnets and magnetic flux access portals are defined between oppositely polarized pole pieces of such neighboring magnets, and wherein at least one working circuit is created which has a reluctance that is lower than that of the magnetic tank circuit by bringing one or more of the magnetic flux access portals into clo
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: November 1, 2016
    Assignee: MAGSWITCH TECHNOLOGY WORLDWIDE PTY LTD
    Inventor: Franz Kocijan
  • Patent number: 9313579
    Abstract: A sound generator apparatus for a vehicle may include a housing and a elastic member arranged at a lower portion of the housing, a driving part including an internal yoke and a magnet, inserted into the housing and disposed on the elastic member to be slid up and down in the housing, a bobbin, an upper end of which is fixed to an inside upper portion of the housing, extended in a downward direction with wrapping the driving part, wherein a coil is wound along a circumference of the bobbin, and an external yoke fixed to the housing in a cylinder shape wrapping the coil and an outside of the internal yoke therein.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: April 12, 2016
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Sang Il Lee, Dong Wook Lee, Hyoung Jin Yoon
  • Patent number: 9151782
    Abstract: A low-cost and high-precision current sensing device and methods for use and manufacturing. In one embodiment, the current sensing apparatus comprises a Rogowski-type coil which is manufactured in segments so as to facilitate the manufacturing process. In an exemplary embodiment, the current sensing apparatus segments comprise a number of bobbin elements that are wound and subsequently formed into complex geometric shapes such as torus-like shapes. In an alternative embodiment, bonded windings are utilized which allow the segments to be formed without a bobbin or former. In yet another alternative embodiment, the aforementioned current sensing devices are stacked in groups of two or more. Methods of manufacturing and using the aforementioned current sensing apparatus are also disclosed.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: October 6, 2015
    Assignee: PULSE ELECTRONICS, INC.
    Inventors: James Douglas Lint, Fuxue Jin, Francisco Michel, Victor Aldaco
  • Patent number: 9035733
    Abstract: A carriage for high magnetic field environments includes a plurality of work-piece separators disposed in an operable relationship with a work-piece processing magnet having a magnetic field strength of at least 1 Tesla for supporting and separating a plurality of work-pieces by a preselected, essentially equal spacing, so that, as a first work-piece is inserted into the magnetic field, a second work-piece is simultaneously withdrawn from the magnetic field, so that an attractive magnetic force imparted on the first work-piece offsets a resistive magnetic force imparted on the second work-piece.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: May 19, 2015
    Assignee: UT-Battelle, LLC
    Inventors: Gerard M Ludtka, Gail M Ludtka, John B Wilgen, Bart L Murphy
  • Patent number: 9027232
    Abstract: A cylindrical magnet assembly has at least one coil mounted on a former, assembled to a bore tube by a number of inserts within holes formed in a material of the former. Each insert can bear on a dished radially outer extremity of a radially-outwardly directed protrusion or each insert can bear on a radially outer concave surface of a radially-inwardly directed protrusion.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: May 12, 2015
    Assignee: Siemens Plc.
    Inventor: Russell Peter Gore
  • Patent number: 9021704
    Abstract: A method for assembling parts. A sealant is placed between a plurality of parts in a stack up to form a workpiece. The workpiece is clamped using a permanent magnet unit and an electromagnetic clamping device in an activated state such that a number of forces caused by a magnetic field clamps the workpiece between the electromagnetic clamping device and the permanent magnet unit. A number of holes are drilled in the workpiece. A number of fasteners are installed in the number of holes.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: May 5, 2015
    Assignee: The Boeing Company
    Inventors: Branko Sarh, Harry Asada, Manas Chandran Menon
  • Publication number: 20150116062
    Abstract: The invention relates to a magnet, which comprises a first permanent magnet for creating a magnetic field, and a shell and a centre, which are arranged to guide a magnetic flux to an object to be gripped. The magnet further comprises a slide, which is arranged to be movable in relation to the shell and the centre, which slide comprises said first permanent magnet, and an electric magnet for moving the slide. The invention also relates to an attaching device, and attaching arrangement and a method for attaching to an object.
    Type: Application
    Filed: May 25, 2012
    Publication date: April 30, 2015
    Applicant: IXTUR OY
    Inventors: Reijo Natti, Janne Pulkkinen
  • Patent number: 8991801
    Abstract: A clamping device for magnetically clamping non-magnetic material objects. The clamping device comprises first and second clamp members each having at least one straight edge surface and each having at least one magnet disposed therein. The first and second clamp members are adapted to magnetically and removably couple to each other, wherein the magnetic coupling is capable of clamping at least one non-magnetic material object. The clamping device is further at least partially transparent, includes markings to facilitate correct alignment of the clamp members and comprises a support member for securely positioning the clamping device on an underlying surface.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: March 31, 2015
    Inventors: Rey Plaszewski, Roman Plaszewski
  • Patent number: 8967603
    Abstract: A magnetic device for gripping and clamping a workpiece in a machining unit or on a machining line including a magnetic plate having a distribution of high-energy permanent-magnet modules, which can be electrically activated. An auxiliary workpiece-holder plate made of ferromagnetic material rests on a main surface of the magnetic plate and has a top surface shaped in a way complementary to a surface of the workpiece that rests thereon. The workpiece rests on the top surface of the auxiliary workpiece-holder plate only in points corresponding to some supporting pads, while the facing surfaces of the workpiece and auxiliary workpiece-holder plate are kept slightly set apart from one another for most of their extension.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: March 3, 2015
    Assignee: C.R.F. Società Consortile per Azioni
    Inventors: Daniela Innocente, Anja Herrmann
  • Patent number: 8957750
    Abstract: The present invention refers to a magnetic device for clamping ferromagnetic workpieces comprising a frame having a first magnetic circuit configured to generate a first magnetic field adapted to clamp a ferromagnetic workpiece to be processed; a second magnetic circuit configured to generate a second magnetic field adapted to clamp said ferromagnetic workpiece to a machine tool bed; said first magnetic circuit and said second magnetic circuit being adapted to be controlled to turn on and/or off independently one from the other. The modular magnetic device is characterized in that it comprises first and second mechanical and electrical connection means for mechanically and electrically connecting said magnetic device, when in operation, to corresponding second and first complementary mechanical and electrical connection means of other modular magnetic devices located adjacent thereto, to create a series of modular magnetic devices mechanically and electrically connected together.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: February 17, 2015
    Assignee: Tecnomagnete S.p.A.
    Inventors: Michele Cardone, Giovanni Cosmai, Roberto Faranda, Antonino Giglio
  • Patent number: 8950054
    Abstract: A manufacturing method employing a robotic assembly system includes first and second fastener system components that are positioned by a robotic assembly on opposite sides of at least two structural pieces that are to be fastened together. The first system component includes a particular tool of a plurality of different types of tools, where the particular tool installs a particular fastener of a plurality of different types of fasteners. Each tool includes a block or base of magnetic material with a passageway opening for the fastener associated with the tool passing through the base. The robotic assembly positions the tool against one side of the structural pieces to be fastened, and positions an electromagnet assembly on the opposite side of the structural pieces. Activating the electromagnet assembly clamps the structural pieces together. With the fastener positioned in a hole through the structural pieces, the tool is activated to install the fastener between the structural pieces.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: February 10, 2015
    Assignee: The Boeing Company
    Inventors: Branko Sarh, Harinder S. Oberoi, Rodney S. Wright, Jeffrey L. Miller
  • Patent number: 8952774
    Abstract: A magnetic lock system for releasably securing a heat exchanger with a component. The system includes: an electromagnet on one of the heat exchanger or the component and a magnetic region on the other of the heat exchanger or the component; the electromagnet being energizable to attract the magnetic region to secure the component and the heat exchanger in a thermally coupled position; and the electromagnet being de-energizable to release the component and the heat exchanger from the thermally coupled position.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: February 10, 2015
    Assignee: 2064818 Ontario Inc.
    Inventor: Alex Dolgonos
  • Patent number: 8919839
    Abstract: An electromagnetic lifter comprises at least two polar expansions (4), shaped for transporting a horizontal axis coil or the like, arranged perpendicularly to the axis of the coil to be lifted, divided into two halves (4a, 4b) slidable with respect to each other under the action of an actuator mechanism (5) and shaped so as to be able to penetrate each other. The adjustability of the polar expansions (4) allows them to better adapt to the different diameters of the coils to be lifted, with the result of exploiting the greatest possible useful polar section and of reducing to a minimum the operational air gaps, whereby the lifter need not be oversized to take into account the most unfavourable case and it results smaller, lighter and cheaper.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: December 30, 2014
    Assignee: SGM Gantry S.p.A.
    Inventor: Danilo Molteni
  • Patent number: 8912872
    Abstract: A clamp assembly comprises a first clamp including a plurality of magnet devices. Each magnet device includes a permanent magnet and a coil surrounding the permanent magnet. The clamp assembly further comprises a controller for pulsing the coils to selectively magnetize and demagnetize the permanent magnets.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: December 16, 2014
    Assignee: The Boeing Company
    Inventors: Branko Sarh, Daniela Lucia Rus, Andrew Dominic Marchese
  • Patent number: 8890641
    Abstract: In this method, magnetic studs housed in a plate are connected to magnetic flux measuring circuits, which define measuring zones, and to power circuits that make it possible to magnetize or demagnetize the studs. The method comprises prior steps that consist in determining (100) at least two treatment zones each defined by at least one measuring zone and defining (102) a surface of the clamping plate in contact with the part to be clamped, as well as following steps consisting, for each treatment zone, in identifying (103) one or more magnetic studs included in a surface of the clamping plate in contact with the part to be clamped, measuring (105) the magnetic flux produced by the stud or studs identified previously, calculating (106) an actual magnetic clamping force based on the measurement of the preceding step and on the identification made previously, calculating (108) a theoretical magnetic force thanks to this identification.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: November 18, 2014
    Assignee: Staubli Faverges
    Inventors: Alain-Christophe Tiberghien, Sylvain Puget, Sylvain Chachereau
  • Publication number: 20140321073
    Abstract: A flexible display includes a flexible substrate, a metal material coupled to the flexible substrate, and at least one electromagnet coupled to the flexible substrate. The electromagnet generates a force to attract the metal material when the flexible substrate changes from a first state to a second state. The force assists in holding the flexible substrate in the second state, which may be a rolled state, folded state, or another changed state. The flexible substrate includes a display area corresponding to a plurality of pixels for generating an image.
    Type: Application
    Filed: March 24, 2014
    Publication date: October 30, 2014
    Inventors: Jun Woo HONG, Hae Kwan SEO
  • Patent number: 8832940
    Abstract: An electromagnetic clamping system contains a housing, numerous permanent magnets, numerous low friction surfaces having a number of wheels, an end effector, an electromagnetic clamping device, first, second, and third coil systems, and a core. The end effector performs operations on a workpiece. The electromagnetic clamping device has an activated state and a deactivated state. The electromagnetic clamping device further includes a first coil system generating a first magnetic field causing normal forces on the permanent magnet unit and the clamping device; a second coil system generating a second magnetic field causing side forces on the permanent magnet unit; and a third coil system generating a third magnetic field causing a rotational force on the permanent magnet unit. The core provides access to the workpiece surface for performing operations thereon; and concentrates forces from a number of magnetic fields on the core surface contacting the workpiece surface.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: September 16, 2014
    Assignee: The Boeing Company
    Inventors: Branko Sarh, Harry Asada, Manas Chandran Menon
  • Publication number: 20140232499
    Abstract: The present invention refers to a magnetic device for clamping ferromagnetic workpieces comprising a frame having a first magnetic circuit configured to generate a first magnetic field adapted to clamp a ferromagnetic workpiece to be processed; a second magnetic circuit configured to generate a second magnetic field adapted to clamp said ferromagnetic workpiece to a machine tool bed; said first magnetic circuit and said second magnetic circuit being adapted to be controlled to turn on and/or off independently one from the other. The modular magnetic device is characterized in that it comprises first and second mechanical and electrical connection means for mechanically and electrically connecting said magnetic device, when in operation, to corresponding second and first complementary mechanical and electrical connection means of other modular magnetic devices located adjacent thereto, to create a series of modular magnetic devices mechanically and electrically connected together.
    Type: Application
    Filed: July 26, 2012
    Publication date: August 21, 2014
    Inventors: Michele Cardone, Giovanni Cosmai, Roberto Faranda, Antonino Giglio
  • Publication number: 20140111033
    Abstract: An inchworm motion linear motor based on an electromagnetic clamping device in a technical field of electromagnetic motors includes more than two electromagnetic clamping mechanisms which are arranged in pairs and mutually symmetrically connected. The electromagnetic clamping mechanism includes magnetic field generation devices, rolling bodies, an output shaft and a shell body, wherein the magnetic field generation devices are fixedly arranged outside the shell body; and the shell body and the rolling bodies are sleeved outside the output shaft in sequence. The inchworm motion linear motor based on the electromagnetic clamping device can be manufactured into an electric control super-large clamping force device by sensitively controlling mechanical rigid locking and releasing states with electromagnetically. The clamping device can be manufactured into a driving device or the linear motor with super-large load and precise movement.
    Type: Application
    Filed: September 6, 2011
    Publication date: April 24, 2014
    Inventor: Bintang Yang
  • Patent number: 8704624
    Abstract: The present invention concerns a magnetic apparatus for magnetic clamping of ferrous elements (P1), comprising a support structure (11) with at least one pole piece (30A) held within its thickness (S), first and second sides (12, 13) being formed in said support structure (11, 11A) at the opposed larger surfaces, said pole piece (30A) comprising at least one first pole piece collector (50), said first pole piece collector (50) being adapted to convey at least one first magnetic flux (F1) generated by said magnetic apparatus to said first side (12, 13). The invention is characterized in that said at least one first pole piece collector (50) is held within the thickness (S) of said support structure (11) and is formed of one piece with said support structure (11).
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: April 22, 2014
    Assignees: Politecnico di Milano, Tecnomagnete S.p.A.
    Inventors: Michele Cardone, Giovanni Cosmai, Roberto Faranda, Antonino Giglio
  • Patent number: 8686819
    Abstract: A magnetic holding device is adapted for holding a mask during processing of a substrate. The magnetic holding device includes a substrate carrier which is adapted for receiving the substrate to be processed. The substrate carrier includes a permanent magnet adapted for generating a first magnetic field for holding the mask. Furthermore, the substrate carrier includes a solenoid which is adapted for generating a second magnetic field adapted for at least partially compensating the first magnetic field. In case the first magnetic field is compensated, at least partially, by means of the second magnetic field, the mask is released from the substrate carrier.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: April 1, 2014
    Assignee: Applied Materials, Inc.
    Inventors: Uwe Schuessler, Stefan Bangert, Heike Landgraf
  • Patent number: 8636272
    Abstract: A one-piece multipole plate for a magnetic clamping apparatus, a process for making such plate and a magnetic apparatus having such plate. The magnetic apparatus has a plurality of pole pieces and the plurality of pole pieces extend from the plate and are formed of one piece with the plate.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: January 28, 2014
    Assignee: Tecnomagnete S.p.A.
    Inventors: Michele Cardone, Giovanni Cosmai, Roberto Faranda, Antonino Giglio
  • Patent number: 8618898
    Abstract: A system for transferring power and/or data through a skin of a vehicle includes a first module for disposition on an external surface of the vehicle, a first magnet arrangement attached to the first module, a second module for disposition on an internal surface of the vehicle, and a second magnet arrangement attached to the second module. The first magnet arrangement and the second magnet arrangement are selected to provide sufficient magnetic attraction therebetween to maintain the first module at a fixed position on the external surface of the vehicle by overcoming an air load force when the vehicle is in motion. When the first module and the second module are in registration with each other though the non-ferrous skin, at least one inductive coupling circuit through the non-ferrous skin is formed to provide one or more bidirectional paths therebetween for transfer of data signals, electrical power or both.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: December 31, 2013
    Assignee: Raytheon Company
    Inventors: William B. Noble, Kim L. Valenzuela, Cheryl K. Endo, James F. Keating
  • Patent number: 8516688
    Abstract: An assembly includes a cylindrical magnet assembly, which includes comprises at least one coil mounted on a former. The assembly also includes a bore tube with a number of radially-directed retaining protrusions formed in a material of the bore tube, each of the number of radially-directed retaining protrusions configured to bear against a periphery of a corresponding cavity in the former.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: August 27, 2013
    Assignee: Siemens Plc.
    Inventor: Russell Peter Gore
  • Publication number: 20130207758
    Abstract: A detent device or mechanism may include a strut comprising at least one strut magnetic array, at least one detent magnetic array, and other components and systems. The at least one detent magnetic array and the at least one strut magnetic array may, for example, apply a magnetic detent force to the strut.
    Type: Application
    Filed: February 10, 2012
    Publication date: August 15, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alan L. BROWNE, Nancy L. Johnson, Roy J. Mathieu, Thomas A. Perry
  • Publication number: 20130072025
    Abstract: A component of a substrate support assembly such as a substrate support or edge ring includes a plurality of current loops incorporated in the substrate support and/or the edge ring. The current loops are laterally spaced apart and extend less than halfway around the substrate support or edge ring with each of the current loops being operable to induce a localized DC magnetic field of field strength less than 20 Gauss above a substrate supported on the substrate support during plasma processing of the substrate. When supplied with DC power, the current loops generate localized DC magnetic fields over the semiconductor substrate so as to locally affect the plasma and compensate for non-uniformity in plasma processing across the substrate.
    Type: Application
    Filed: September 16, 2011
    Publication date: March 21, 2013
    Applicant: Lam Research Corporation
    Inventors: Harmeet Singh, Keith Gaff, Brett Richardson, Sung Lee
  • Publication number: 20120301130
    Abstract: A system includes an instrument coupled to a magnetic material. The orientation of the instrument is influenced by a magnetic field generated by an array of magnetic elements. Each element of the array is controlled by a data value in a magnetic control store to produce a field strength and polarity. Overwriting the pattern in the magnetic control store will result in a magnetic field which applies a torque to the instrument and cause an azimuthal or elevational rotary movement about the center of the instrument.
    Type: Application
    Filed: May 25, 2011
    Publication date: November 29, 2012
    Inventor: Fleming Shi
  • Publication number: 20120281194
    Abstract: A positioning apparatus controls a relative position between a first member and a second member. The apparatus includes an electromagnet fixed to the first member, an attraction target fixed to the second member so as to be attracted by the electromagnet, a magnetic flux sensor which detects a magnetic flux value generated by the electromagnet, and a driving unit which drives the electromagnet in accordance with an error between the magnetic flux value detected by the magnetic flux sensor and a corrected magnetic flux command value obtained by correcting a magnetic flux command value in accordance with a size of a gap between the electromagnet and the attraction target.
    Type: Application
    Filed: May 2, 2012
    Publication date: November 8, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Tosiya Asano
  • Patent number: 8292276
    Abstract: The present invention relates to a one-piece multipole plate for a magnetic clamping apparatus, a process for making such plate and a magnetic apparatus having such plate, wherein the magnetic apparatus has a plurality of pole pieces and said plurality of pole pieces extend from said plate and are formed of one piece with said plate.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: October 23, 2012
    Assignee: Tecnomagnete S.p.A.
    Inventors: Michele Cardone, Giovanni Cosmai, Roberto Faranda, Antonino Giglio
  • Patent number: 8279032
    Abstract: A system for detachment of correlated magnetic structures includes first and second correlated magnetic structure having complementary coded magnetic sources; and a tool that applies a bias magnet field to cause a transition of the first and second magnetic structures from a closed state in which the first and second magnetic structures are attached to an open state in which the first and second magnetic structures are detached.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: October 2, 2012
    Assignee: Correlated Magnetics Research, LLC.
    Inventors: Larry W. Fullerton, Mark D. Roberts, Ryan Fechner, Kelly Loum
  • Publication number: 20120210802
    Abstract: A robotic system comprises an end effector including an electromagnetic clamp, a force sensor attached to the end effector for measuring force exerted by the clamp against a work piece surface, and a plurality of normality sensors. The normality sensors are positioned about the force sensor to determine whether the clamp is normal to the surface before the force sensor makes contact with the surface.
    Type: Application
    Filed: February 22, 2011
    Publication date: August 23, 2012
    Applicant: THE BOEING COMPANY
    Inventors: Branko Sarh, James D. Gamboa, Chris J. Erickson
  • Patent number: 8210585
    Abstract: An electromagnetic lifter includes at least two polar expansions shaped for transporting a horizontal axis coil of hot-rolled steel. The polar expansions are connected through a ferromagnetic circuit and respective cores around which solenoids are arranged. A detection coil is arranged around each of the cores suitable to detect the change in the flux linked to the coil, and a control unit connected to the detection coils compares the values detected by each of them in order to authorize or not the transport. The relevant operating method includes a first check that the difference between the values detected by the two detection coils is below a preset threshold, and in the affirmative a second check that the overall decrease in the linked flux is below a second preset threshold, the issuance of an authorization signal to the transport being possible only in case of positive outcome of both checks.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: July 3, 2012
    Assignee: SGM Gantry S.p.A.
    Inventor: Danilo Molteni
  • Patent number: 8106735
    Abstract: An electromagnetic attachment apparatus includes a power supply, an electromagnet module, and a rotatable module. The electromagnet module includes a coil and a core positioned in the coil. A mounting panel is attached to the core. A pair of electrically conductive blocks is attached to the mounting panel, and connected to the coil. The rotatable module is rotatably attached to the mounting panel, and includes a pair of electrically conductive pins connected to positive and negative electrodes of the power supply respectively. The rotatable module is rotatable to a first position in which the electrically conductive pins thereof contact the electrically conductive blocks for attaching a metal object, or a second position in which the electrically conductive pins thereof disengage from the electrically conductive blocks for releasing the metal object.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: January 31, 2012
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: Zhan-Yang Li
  • Publication number: 20110304418
    Abstract: A magnetic holding device is adapted for holding a mask during processing of a substrate. The magnetic holding device includes a substrate carrier which is adapted for receiving the substrate to be processed. The substrate carrier includes a permanent magnet adapted for generating a first magnetic field for holding the mask. Furthermore, the substrate carrier includes a solenoid which is adapted for generating a second magnetic field adapted for at least partially compensating the first magnetic field. In case the first magnetic field is compensated, at least partially, by means of the second magnetic field, the mask is released from the substrate carrier.
    Type: Application
    Filed: June 18, 2010
    Publication date: December 15, 2011
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Uwe SCHUESSLER, Stefan BANGERT, Heike LANDGRAF
  • Patent number: 8068325
    Abstract: A method and apparatus for moving magnetic material includes an electromagnet for lifting the magnetic material where upon its release, the residual magnetic flux of the lifted magnetic material is reduced. The apparatus includes a generator coupled to the electromagnet. The generator includes a control input and an armature having a voltage output. A controller has an output coupled to the generator's control input and armature voltage output, whereupon receiving a release material signal from an operator interface panel to release the magnetic material from the electromagnet, the controller transmits a plurality of control signals, one of which is at least partially dependent upon the duration of a previously transmitted control signal, to effectively alternate the polarity and reduce the magnitude of the magnetizing force of the electromagnet.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: November 29, 2011
    Assignee: Ephaugh, Inc.
    Inventor: John Samila
  • Patent number: 8031038
    Abstract: The magnetic fixing device comprises a clamping plate having a fixing surface to which a clamping object is fixed and plural magnetic force generation mechanisms. The magnetic force generation mechanisms each comprise a magnetic material member facing the fixing surface, plural permanent magnets arranged around the outer periphery of the magnetic material member, a first Alnico magnet placed on the back of the magnetic material member, and a first coil for switching the polarity of the first Alnico magnet, and can be switched between the absorption state in which the clamping object is adsorbed and the non-absorption state in which the clamping object is not adsorbed. An operation state indication mechanism capable of presenting an indicator indicating that the plural magnetic force generation mechanisms are in the absorption state or in the non-absorption state is provided on the fixing surface or outer periphery of the clamping plate.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: October 4, 2011
    Assignee: Pascal Engineering Corporation
    Inventor: Seiji Kimura
  • Patent number: 7999919
    Abstract: Disclosed is technology for holding a substrate and, specifically, an object holding apparatus including a chuck for holding an object, a holding unit for holding the chuck, a generating unit provided in the holding unit, for generating a field related to an attraction force, a member provided in the chuck and attracted by the generating unit in accordance with the field, and a supporting unit for supporting one of the generating unit and the member, for movement at least in a direction nearing the other and in a direction away from the other.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: August 16, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshikazu Miyajima, Hideo Tanaka
  • Patent number: 7999645
    Abstract: An electro permanent magnetic apparatus with monolithic working face for holding workpieces magnetically or mechanically comprises a base plate and a ferrous monolithic working face. The base plate has a pocket or recess which houses reversible magnets and electrical windings; the working face has magnetic poles which are demarked by slots. On the opposite side of the working face recesses are provided beneath the slots for housing non-reversible permanent magnets.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: August 16, 2011
    Assignee: East Coast Enterpriser Ltd
    Inventor: Uttam Sarda
  • Patent number: 7940149
    Abstract: The present invention is a magnetic chuck that is chiefly used for machining tools. The magnetic chuck has a structure in which an accommodation hole (110a) is formed to pass through a chuck main body (110), a first magnetic element (141) is exposed in the direction of the top surface of the chuck main body (110), and an AlNiCo magnet (120) is exposed in the direction of the bottom surface of the chuck main body (110), so that respective objects (200 and 300) to be attached can be attached to two opposite surfaces of the magnetic chuck (100), with the result that the magnetic chuck (100) can be used in various ways. Furthermore, the lateral part (112) of the chuck main body (110) is not unnecessary, so that the weight of the magnetic chuck (100) itself is greatly reduced and thus the product cost is reduced, the thickness of the magnetic chuck (100) is reduced, and convenience of use can be greatly improved.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: May 10, 2011
    Inventor: Yong Goo Lee
  • Publication number: 20110057755
    Abstract: A magnetic actuator has a static part and a dynamic part concentrically arranged therein. The static part comprises two permanent magnets and the dynamic part comprises two further permanent magnets. The magnet is oppositely oriented to the further magnets. The magnets are tuned to each other in such a way that the gravity on the dynamic part is compensated by the magnetic force on the dynamic part. The static part further includes a coil with which an additional magnetic field can be generated by which the actuation force can be adapted.
    Type: Application
    Filed: January 26, 2009
    Publication date: March 10, 2011
    Inventor: Johannes Adrianus Antonius Theodorus Dams
  • Publication number: 20110043310
    Abstract: The present invention concerns a magnetic apparatus for magnetic clamping of ferrous elements (P1), comprising a support structure (11) with at least one pole piece (30A) held within its thickness (S), first and second sides (12, 13) being formed in said support structure (11, 11A) at the opposed larger surfaces, said pole piece (30A) comprising at least one first pole piece collector (50), said first pole piece collector (50) being adapted to convey at least one first magnetic flux (F1) generated by said magnetic apparatus to said first side (12, 13). The invention is characterized in that said at least one first pole piece collector (50) is held within the thickness (S) of said support structure (11) and is formed of one piece with said support structure (11).
    Type: Application
    Filed: April 22, 2008
    Publication date: February 24, 2011
    Inventors: Michele Cardone, Giovanni Cosmai, Roberto Faranda, Antonino Giglio
  • Publication number: 20110037547
    Abstract: The present invention concerns a magnetic apparatus (10A, 10B, 10C, 10D, 10E, 10F) for magnetic clamping of ferrous elements (P1), comprising a support structure (11, 11A) with a plurality of pole pieces (30A) held within its thickness (S), first and second sides (12, 13) being formed in said support structure (11, 11A) at the opposed larger surfaces, the pole piece of said plurality of pole pieces (30A) comprising at least one first pole piece collector (50), a lateral portion (50A) of each first pole piece collector (50) forming a portion of said first side (12), said pole pieces (30A) generating a least one first magnetic flux (F1) on said first side (12), for magnetically clamping first ferrous elements (P1).
    Type: Application
    Filed: April 22, 2008
    Publication date: February 17, 2011
    Inventors: Michele Cardone, Cosmai Giovanni, Roberto Faranda, Antonino Giglio
  • Publication number: 20100231337
    Abstract: An electronic device having two cases and a display module disposed therebetween is disclosed. Magnets are disposed at the two cases and the display module. When an acceleration sensed by a sensing unit of the electronic device is larger than a threshold value. The display module may be suspended via the magnetic repellent between the magnets disposed at the display module and the magnets disposed at two cases.
    Type: Application
    Filed: February 8, 2010
    Publication date: September 16, 2010
    Applicant: ASUSTeK COMPUTER INC.
    Inventors: Yuan-Te Chang, Chia-Hung Chen