With Permanent Magnet Patents (Class 335/229)
  • Patent number: 10734148
    Abstract: An electromagnetic holding magnet and a method for manufacturing the same, and an electromagnetic locking element that, that in a preferred embodiment, is a lock in a container of an oxygen emergency supply system of an aircraft. The electromagnetic holding magnet includes a yoke and a retaining plate interacting with the yoke as an anchor. At least one permanent magnet generates a magnetic retaining flux in the yoke that includes a first yoke leg and a second yoke leg as well as a middle pole. The middle pole is surrounded in sections by a magnetic coil. The first and second yoke legs are arranged symmetrically in relation to the middle pole and the magnetic coil.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: August 4, 2020
    Assignee: Kendrion Kuhnke Automation GmbH
    Inventors: Mathias Jotter, Borgar Pfeiffer, Bleik Teunis
  • Patent number: 10703217
    Abstract: According to one embodiment, an inductor unit includes a first inductor and a second inductor. The first inductor includes a first magnetic core and a first coil winded around the first magnetic core. The second inductor includes a second magnetic core and a second coil winded around the second magnetic core. The first inductor and the second inductor are placed so that a first angle between a first line and a fifth line is equal to or greater than 0 degrees and is equal to or less than 90 degrees. The cross section of the first coil in the width direction and a cross section of the first coil in the width direction are overlapping at least at direction of the first magnetic flux or direction of the second magnetic flux.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: July 7, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kenichirou Ogawa, Masatoshi Suzuki
  • Patent number: 10699831
    Abstract: A reluctance transducer includes a soft ferromagnetic yoke and a soft ferromagnetic core element, which is movable relative to the yoke. Two permanent magnets bear the core element. The permanent magnets are arranged relative to each other and to the yoke so that the reluctance transducer has a good linear relationship between displacement and force. The reluctance transducer can be applied as stiffness compensating element. The reluctance transducer can include an electrical winding to allow its application as a magnetic bearing, an actuator or as a displacement, velocity or acceleration sensor with improved intrinsic linearity.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: June 30, 2020
    Assignee: NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO
    Inventors: Roger Franciscus Mattheus Maria Hamelinck, Christian Werner
  • Patent number: 10692636
    Abstract: An electromagnetic actuator device has at least one stationary spool unit (4), which can be energized, and at least one armature unit (7), movable along a displacement axis (V) and with respect to the spool unit (4) in reaction to the spool unit (4) being energized. The armature unit (7) can be displaced between a parked position and an actuating position in an output drive direction along the displacement axis (V) in order to interact with an actuating element, which can be a camshaft disposed on the output side of the armature unit (7), and can be rotated about the displacement axis (V).
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: June 23, 2020
    Assignee: ETO Magnetic GmbH
    Inventors: Philipp Fangauer, Jörg Bürssner
  • Patent number: 10622877
    Abstract: A linear vibration generator in which a coil or a stator is fixed using a simple structure compared to a conventional technology. There is provided a linear vibration generator having advantages of a simplified assembly process and a low production cost by reducing the number of parts that form the inside of the vibration generation device through an improved bracket structure in which a protruding part functions as a central yoke. The protruding part can be easily fabricated by being pressed into a bracket using a press or deep drawing method, and a coil is fixed by a stable structure. There is an advantage of a low production cost.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: April 14, 2020
    Assignee: MPLUS CO., LTD.
    Inventors: Yong Tae Kim, Nam Sock Kim, Tae Hoon Lee
  • Patent number: 10566888
    Abstract: Embodiments described herein may take the form of an electromagnetic actuator that produces a haptic output during operation. Generally, an electromagnetic coil is wrapped around a central magnet array. A shaft passes through the central magnet array, such that the central array may move along the shaft when the proper force is applied. When a current passes through the electromagnetic coil, the coil generates a magnetic field. The coil is stationary with respect to a housing of the actuator, while the central magnet array may move along the shaft within the housing. Thus, excitation of the coil exerts a force on the central magnet array, which moves in response to that force. The direction of the current through the coil determines the direction of the magnetic field and thus the motion of the central magnet array.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: February 18, 2020
    Assignee: Apple Inc.
    Inventors: Brett W. Degner, David H. Narajowski, Jonah A. Harley, Alyssa J. Garver
  • Patent number: 10530230
    Abstract: The invention relates to a miniature linear vibrotactile actuator comprising: a first element 14, 104 of generally cylindrical shape, comprising permanent magnets 15, 105 aligned so that two adjacent sides of two adjacent magnets 15, 105 have identical polarities; a second element 11, 101 defining a cylindrical cavity 12, 102 into which the first element 14, 104 is inserted with play so as to be able to slide therein in a sliding direction X2, the second element 11, 101 comprising coils 13, 103 of conductive wire having strands that extend perpendicularly to the sliding direction X2, in order to form magnetic force generators, and that are placed so as to be able to influence the first element 14, 104 electromagnetically; and means 25, 41, 125 for returning and guiding the first element 14, 104 toward an equilibrium position in the second element 11, 101, in which position a median plane P2 between two adjacent magnets substantially coincides with a median plane P1 of a facing force generator 111.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: January 7, 2020
    Assignees: SORBONNE UNIVERSITE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Vincent Hayward, Amir Berrezag, George Dietz
  • Patent number: 10437006
    Abstract: Disclosed herein is a camera lens module. The camera lens module may include a base in which a lens barrel is placed, an auto-focusing driving unit disposed in parallel to the first side surface of the base in such a way as to face the first side surface and disposed to face the lens barrel, and an optical element driving unit disposed in parallel to a second side surface placed in a direction opposite the first side surface, disposed to face the lens barrel, and disposed to stand opposite to the auto-focusing driving unit.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: October 8, 2019
    Assignee: JAHWA electronics Co., Ltd.
    Inventors: Hee Seung Kim, In Soo Kim
  • Patent number: 10399122
    Abstract: A vibration motor includes a shaft, a stationary portion, a vibrating body, and an elastic member. The vibrating body includes a weight, first magnets, magnetic bodies, and one or more second magnets. Each first magnet has a ring shape and is magnetized in an inner or outer circumferential direction. Each magnetic body has a ring shape and is disposed between the shaft and a corresponding one of the first magnets. The one or more second magnets are magnetized in one direction, have a ring shape, and are interposed between the magnetic bodies corresponding thereto that are adjacent to each other in the one direction. The adjacent first magnets in the one direction are such that magnetic polarities of one of the first magnets at inner and outer circumferences thereof are opposite to magnetic polarities of another of the first magnets adjacent thereto at inner and outer circumferences thereof.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: September 3, 2019
    Assignee: NIDEC SEIMITSU CORPORATION
    Inventors: Tomohiro Akanuma, Mitsuru Ol, Satoshi Nakazawa
  • Patent number: 10389197
    Abstract: A linear electromagnetic actuator includes a stator excited by at least one electric coil arranged around an axis of symmetry and two ferromagnetic stator poles positioned axially on either side of the coil, as well as at least two independent moving members, each of the moving members being formed of a ferromagnetic material, where the linear electromagnetic actuator includes at least three magnetized poles arranged inside the coil, with respectively a first magnetized pole positioned in the vicinity of the median plane separating the two moving members and containing the axis of the coil, and a second and third magnetized pole arranged laterally on either side of the moving members, between the moving members and the coil.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: August 20, 2019
    Assignee: Moving Magnet Technologies (MMT)
    Inventors: Stéphane Biwersi, Javier Rios-Quesada, Michaél Delbaere, Guillaume Loussert, Gael Andrieux
  • Patent number: 10254559
    Abstract: The invention relates to an optical device for reducing speckle noise of laser light having a first optical element extending along an extension plane, and an actuator designed for moving the first optical element along the extension plane. The actuator is formed as a reluctance actuator that is designed to exert a reluctance force on the first optical element to move the first optical element along the extension plane.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: April 9, 2019
    Assignee: Optotune AG
    Inventors: David Niederer, Marcel Suter, Manuel Aschwanden, Selina Casutt, Damian Schneider
  • Patent number: 10082217
    Abstract: A torque motor valve actuator for use with a valve assembly is provided. The torque motor valve actuator includes an armature spring having a first end portion, a second end portion and a rigid central portion. The first end portion and the second end portion are coupled to the rigid central portion by a respective flexible portion, and the rigid central portion defines a bore that extends along a first axis. The torque motor valve actuator includes an armature having a first end and a second end. The armature extends along a longitudinal axis that is substantially parallel to the first axis of the bore, and the armature is coupled to the bore of the armature spring between the first end and the second end.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: September 25, 2018
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Sammuel Tillich, Donna Laboda, Nicholas Wilson
  • Patent number: 10079532
    Abstract: An induction generator (200; 301) having a magnet assembly (204; 304) for generating a permanent magnetic field, an annular coil (206; 306), a spring element (228; 328) and an air channel (212; 312) through which the permanent magnetic field passes, is proposed, wherein the magnet assembly (204; 304) comprises a first pole section (208; 308) and a second pole section (210; 310) and a magnet (214; 314) disposed between the first pole section (208; 308) and the second pole section (210; 310), the coil (206; 306) is connected to the spring element (228; 328) and is movably disposed in the air channel (212; 312) and the spring element (228; 328) is designed to cause an oscillation movement (224) of the coil (206; 306) in the air channel (212; 312) transverse to a magnetic flux (222; 322) of the permanent magnetic field inside the air channel (212; 312) in response to a deflection of the coil (206; 306), characterized in that the air channel (212; 312) is annular and is designed to accommodate the annular coil (20
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: September 18, 2018
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventor: Eduard Ruff
  • Patent number: 10077690
    Abstract: A multiple variable valve lift apparatus may include a moving cam formed in a hollow cylindrical shape into which a camshaft is inserted. In particular, the moving cam rotates together with the camshaft, moves in an axial direction of the camshaft, and includes a cam guide protrusion and a plurality of cams realizing different valve lift with each other. Moreover, the apparatus includes: an operating unit selectively guiding the cam guide protrusion; a controller controlling the operating unit; a valve opening/closing unit contacting with any one cam of the cams; and at least two pins disposed at the operating unit so as to guide the cam guide protrusion. The cam guide protrusion includes an inserted portion being selectively inserted between the pins and a shift portion.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: September 18, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventor: Byong Young Choi
  • Patent number: 10024454
    Abstract: An actuator includes a housing with a first end, a second end opposite the first end, and a bore disposed therein. The bore defines a poppet movement axis and extends between the first end and second end of the housing. A solenoid is disposed within the bore and extends about the poppet movement axis. An armature is disposed within the bore and is movable along the poppet movement axis between a disengaged position and an engaged position, the engaged position proximate the solenoid and the disengaged position spaced apart from the solenoid. A magnet is disposed within the bore between the first end of the housing and the armature, the magnet magnetically coupled to the armature to bias the armature towards the disengaged position.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: July 17, 2018
    Assignee: Kidde Technologies, Inc.
    Inventor: Doug J. Baxendell
  • Patent number: 9985511
    Abstract: A linear actuator for linearly positioning a recording head in a data storage mechanism. The disclosed linear actuator includes an electrically conductive coil having first and second parts that are both wound in the same rotary direction about an axis, and a magnet spaced from the electrically conductive coil by an air gap. Transmission of an electric current through the first part of the electrically conductive coil in a first current flow direction about the axis and through the second part of the electrically conductive coil in an opposite second current flow direction about the axis induces linear movement of one of the electrically conductive coil and magnet relative to the other of the electrically conductive coil and magnet.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: May 29, 2018
    Assignee: Oracle International Corporation
    Inventors: Darryl Wayne Yeakley, Frank A. Goodknight
  • Patent number: 9965929
    Abstract: The present invention relates to a tactile information providing device. The tactile information providing device according to the present invention comprises a tactile transmission unit (1: 10, 20) formed of a magneto-rheological elastomer (MRE) material, wherein the tactile transmission unit (1) provides tactile information through the transformation (10a-10d, 20a-20d) by an external magnetic field.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: May 8, 2018
    Assignee: CK MATERIALS LAB CO., LTD.
    Inventors: Seoung Hun Do, Hyeong Jun Kim
  • Patent number: 9941042
    Abstract: An electromagnetic actuating apparatus, in particular a proportional magnet or switching magnet, includes a magnet armature (4) guided for axial movement in a pole tube (2). The pole tube is at least partially surrounded by a coil winding and is adjoined by a pole core (10) via a separating region (20) forming a magnetic decoupling. On energization of the coil winding (52), a magnetic force acts on the armature (4) to move the armature (4) in the direction of the pole core (10) within a travel area. At least one insert (28) of ferromagnetic material with a preset axial thickness is between the armature (4) and the pole core (10) to shorten, as desired, the axial length of the travel area.
    Type: Grant
    Filed: June 14, 2014
    Date of Patent: April 10, 2018
    Assignee: HYDAC ELECTRONIC GMBH
    Inventor: Andreas Bereschka
  • Patent number: 9906113
    Abstract: Provided is a linear actuator whose entire length can be shortened while thrust thereof can be made large. The linear actuator of the present invention is provided with the following: a hollow drive magnet (11); a coil (4) disposed at either the outside or the inside of the drive magnet (11); and a return magnet (8) that is disposed at the other of the outside or the inside of the drive magnet (11), is connected to the coil (4), and returns the drive magnet (11) to the starting point. By conducting electricity to the coil (4), the drive magnet (11) or the coil (4) and the return magnet (8) move in the axial direction of the drive magnet 11.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: February 27, 2018
    Assignee: THK CO., LTD.
    Inventors: Junichiro Iwaki, Takashi Ogata
  • Patent number: 9887612
    Abstract: A linear motor which includes a bobbin with an interior lengthwise axial opening with a permanent magnet assembly within the opening and electricity carrying coils wound on an exterior of the bobbin which creates a force when electricity runs through the wound coils as a result of interaction between the magnetic field created by the magnet assembly, and the current passing through the coil wires, that enables the magnet assembly to move in an axial direction within the bobbin. The bobbin includes an encoder within an interior wall and an encoder scale strip affixed to the magnet assembly so that the encoder can detect the position of the magnet assembly.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: February 6, 2018
    Assignee: MOTICONT
    Inventor: Fariborz Aaron Eghbal
  • Patent number: 9850688
    Abstract: A system is provided. The system includes a detacher. The detacher includes a field source. The field source is arranged to provide a first magnetic field when power is applied to the field source. The detacher further includes a magnet arranged to provide a second magnetic field. The magnet is movable from a non-detach position to a detach position when exposed to the first magnetic field. The second magnetic field is arranged to unlock a security tag when the magnet is at the detach location. The system further includes an activation device. The activation device includes a processor configured to trigger power to be supplied to the field source.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: December 26, 2017
    Assignee: Tyco Fire & Security GmbH
    Inventors: Justin Stewart, Ronald B. Easter
  • Patent number: 9749536
    Abstract: The present techniques are related to a system and method for increasing the magnetic flux applied to a magnetic shape-memory (MSM) element. The method includes generating a magnetic field by applying a current through a transformer core. The method includes directing the magnetic field to configure a position of the MSM element. The method includes propagating the magnetic field through a ferrofluid at an interface between the transformer core and the MSM element. The method also includes increasing the permeability of a magnetic flux of the magnetic field across the MSM element.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: August 29, 2017
    Assignee: Intel Corporation
    Inventor: Mikko Ollila
  • Patent number: 9716423
    Abstract: The tactile feedback actuator generally has a stopper, a damper, a hammer path between the stopper and the damper, a coil element fixedly mounted relative to the hammer path, and a magnetic hammer guidingly mounted for movement along the hammer path. The magnetic hammer has two opposite ends. Each end of the magnetic hammer has a corresponding permanent magnet. The two permanent magnets have opposing polarities. The magnetic hammer is electromagnetically engageable by a magnetic field emitted upon activation of the coil element so as to be longitudinally slid along the hammer path in any one of two opposite directions depending on a polarity of activation of the coil element. The stopper has a striking surface adapted for stopping the magnetic hammer, and the damper is adapted for decelerating the magnetic hammer as the magnetic hammer is longitudinally slid towards the damper.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: July 25, 2017
    Assignee: NANOPORT TECHNOLOGY INC.
    Inventor: Timothy Jing Yin Szeto
  • Patent number: 9600071
    Abstract: An apparatus for providing haptic feedback, including: a shell defining an aperture; a driver disposed within the shell; a mass disposed within the coil; and a projection connected to the mass and extending through the aperture. Also described herein is a method for providing generalized and localized haptic feedback, including the operations of: receiving an input signal; determining if the input signal corresponds to a generalized haptic feedback; if so, providing a first input to a linear vibrator; otherwise, providing a second input to a linear vibrator; wherein the linear vibrator outputs a generalized haptic feedback in response to the first input; and the linear vibrator outputs a localized haptic feedback in response to the second input.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: March 21, 2017
    Assignee: APPLE INC.
    Inventor: Fletcher Rothkopf
  • Patent number: 9576714
    Abstract: A magnetic actuator includes: a movable unit, movable between a first position and a second position, and including an integrally formed eddy-current component and first magnet yoke component; a second magnet yoke component to form a magnetic circuit with the first magnet yoke component; an electromagnetic coil capable of generating an exciting magnetic field when being energized, magnetic lines generated thereby being energized penetrating the magnetic circuit formed by the first and second magnet yoke components; an eddy-current coil to enable an eddy current to be generated in the eddy-current component, to produce an electromagnetic repulsive force to the movable unit; and a permanent magnetic holding component to hold the movable unit in the first position or the second position. The magnetic actuator can simplify the actuator, reduce the number of components and the size thereof, as well as reducing the energy consumption and improving the stability thereof.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: February 21, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Jian Cheng, Ying Hua Song, Lan Jin Wang, Chao Yang, Ji Long Yao, Yan Feng Zhao
  • Patent number: 9496079
    Abstract: A solenoid assembly includes a switching regulator and a solenoid electrically connected to an output signal connection of the switching regulator, the solenoid electrically actuable between an extended position and a pull-in position. The assembly includes an output level switch electrically connected to an input switching connection and the output signal connection of the switching regulator, and a timer connected to an output of the switching regulator and an input of the output level switch. The timer generates a signal at the output of the output level switch, thereby causing the output level switch to generate a hold signal at the input switching connection of the switching regulator after sensing a signal at the output signal connection. Upon receiving the hold signal at the input switching connection, the switching regulator causes an output signal on the output voltage connection to switch from a switching level to a hold level.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: November 15, 2016
    Assignee: Eaton Corporation
    Inventors: Yuriy Khayzikov, Ashot Avertisyan, Sarkis Isayan, Olavo Jordao, Jr.
  • Patent number: 9449747
    Abstract: A standard solenoid body and coils are combined with a non-magnetic armature tube containing a permanent magnet, preferably neodymium. The magnet is located in one of three positions within the armature. When biased toward the stop end of the solenoid, it may be configured to act as a push solenoid. When biased toward the collar end of the solenoid, it may be configured to act as a pull solenoid. In either case, no spring is required to return the armature to its de-energized position. Positioning the magnet in the middle of the armature defines a dual-latching solenoid requiring no power to hold it in a given state. A positive coil pulse moves the armature toward the stop end, whereas a negative coil pulse moves the armature toward the collar end. The armature will remain at the end to which it was directed until another pulse of opposite polarity comes along.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: September 20, 2016
    Assignee: Hanchett Entry Systems, Inc.
    Inventors: Leland J. Hanchett, Jr., Dominik Scheffler
  • Patent number: 9418764
    Abstract: Actuator device having an expansion unit, which includes a magnetic shape memory alloy material, and a spring unit which interacts therewith in a restoring manner, wherein at least one spring of the spring unit is assigned to the expansion unit, which is designed to perform an expansion movement along an expansion direction, in such a way that the spring can exert a restoring spring force counter to the expansion direction on the expansion unit, and wherein the spring is set up and/or predetermined in its spring characteristic curve properties in such a way that a spring force profile of the spring unit along a stroke range, determined by an expansion force profile of the expansion unit and a restoring spring force profile, of the expansion movement does not form a continuously rising curve, and/or the spring force profile, with respect to a continuously rising curve, extends and/or increases the stroke range.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: August 16, 2016
    Assignee: ETO Magnetic GmbH
    Inventors: Markus Laufenberg, Thomas Schiepp
  • Patent number: 9396858
    Abstract: A magnetic spring device includes a permanent magnet, a first yoke and a second yoke, disposed to oppose each other with the permanent magnet interposed therebetween, a movable element, made from a magnetizable body, provided to enable linear movement in an axial direction thereof, in a state wherein a location of an axis is constrained, between the first and second yokes, away from the permanent magnet, where a magnetic path of a magnetic flux that exits from an N-pole of the permanent magnet and returns to a S-pole is formed together with the first and second yokes, and a magnetic flux distribution controlling portion that changes a distribution of an amount of magnetic flux that is provided from the permanent magnet through the first and second yokes to the movable element, and an amount of magnetic flux from the permanent magnet that is not provided to the movable element.
    Type: Grant
    Filed: February 18, 2013
    Date of Patent: July 19, 2016
    Assignee: AZBIL CORPORATION
    Inventor: Shoji Kamiunten
  • Patent number: 9385580
    Abstract: The invention relates to an electromagnetic actuator for a surgical or medical instrument, the actuator having a stator (19) and a displaceable element (10), which at least partially comprises a paramagnetic or ferromagnetic material and can be displaced from a first position into a second position by applying an electromagnetic field. The invention is characterized in that the displaceable element (10) is or will be held in the first or in the second position by a permanent magnet.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: July 5, 2016
    Assignee: OLYMPUS WINTER & IBE GMBH
    Inventors: Martin Wieters, Marco Feldmann
  • Patent number: 9343948
    Abstract: A linear actuator for generating a thrust force for relatively displacing an outer tube and an inner tube in an axial direction includes a rod standing in an axial center part of the inner tube, a plurality of permanent magnets held side by side in an axial direction by the rod, a plurality of coils facing the permanent magnets, and a holder that is fixed to the outer tube and holds the plurality of coils. The holder includes a tubular coil holding portion that is provided in an annular space formed between the rod and the inner tube and holds the coils. A clearance is formed between the outer periphery of the coil holding portion and the inner periphery of the inner tube.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: May 17, 2016
    Assignee: KYB Corporation
    Inventors: Takashi Kakiuchi, Kousuke Satou
  • Patent number: 9318942
    Abstract: An electric machine that allows enhancement of thrust of a mover is provided. An electric machine includes a magnetic pole piece array including a plurality of magnetic pole pieces spaced along a permanent magnet array. The magnetic pole pieces are disposed between the permanent magnet array and winding portions in immovable relation with the winding portions. The pitch of permanent magnets and the pitch of magnetic pole pieces are determined such that magnetic flux flows through two of the permanent magnets magnetized in the same direction and located in the permanent magnet array with one permanent magnet interposed between the two permanent magnets, and also flows through one of the magnetic pole pieces facing the one permanent magnet interposed between the two permanent magnets and magnetized in a direction of magnetization different from the direction of magnetization of the two permanent magnets.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: April 19, 2016
    Assignee: SANYO DENKI CO., LTD.
    Inventors: Satoshi Sugita, Yuqi Tang, Yasushi Misawa
  • Patent number: 9275782
    Abstract: A switch for an electrical circuit includes a base, a rotatable cam having a first profile and a second profile, a solenoid, a link, and a member comprising a cam follower configured to follow the second profile. A first cycle of the solenoid includes a first energized state and a first de-energized state and the second cycle of the solenoid includes a second energized state and a second de-energized state. A first portion of the link couples to the solenoid, and a second portion of the link movably couples to the first profile of the cam. When the solenoid is in a first cycle, the member moves from a retracted position to an extended position, and when the solenoid is in a second cycle, the member moves from the extended position to the retracted position.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: March 1, 2016
    Assignee: Hubbell Incorporated
    Inventor: Joseph P. Gerovac
  • Patent number: 9151355
    Abstract: A co-axial adjustable damping assembly includes a cylinder unit having an outer case with a cap, and an inner case having a piston unit which movably contacts inside of the outer case. A valve unit extends through the piston unit and is inserted into the inner case. A piston is connected to the valve unit and defines a first oil chamber and a second oil chamber in the inner case. A path communicates between the first and second oil chambers. A piston rod extends through the inner case, the outer case, the piston unit and the piston. A switching device is connected to the cap and has a first tube which has a cam part contacting the piston rod. A damping device has a driving rod inserted into the first tube. The driving rod is rotated to move the piston rod linearly to adjust the path.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: October 6, 2015
    Assignee: Racingbros International Incorporated
    Inventor: Meng-Tsung Chen
  • Patent number: 9074496
    Abstract: An electromagnetic actuating device is being proposed for a valve train that can be adjusted on the cam side in an internal combustion engine, including a housing with a top part and a bottom part, whereby an electrically energizable solenoid device is embedded in the top part of the housing and an adjusting pin that is actuated by the solenoid device is mounted in the bottom part of the housing so as to move longitudinally, and also including a plug-in connector that is made of plastic and that runs on the top part of the housing in order to supply electricity to the solenoid device as well as a connecting flange that runs on the housing in order to attach the actuating device to the internal combustion engine. The plug-in connector and the connecting flange are integral parts of the top part of the housing made by encapsulating the solenoid device with plastic.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: July 7, 2015
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Friedrich Schuler
  • Patent number: 9035732
    Abstract: A linear actuator includes a first tube, a second tube inserted into the first tube to be free to slide, a rod fixed at one end of the rod to the first tube, a rod guide provided on the other end of the rod so as to slide relative to the second tube, a plurality of permanent magnets held by the rod, a holder that is fitted into the second tube and holds a plurality of coils, a first chamber defined between one end of the holder and an end portion of the first tube, and a second chamber defined between the other end of the holder and the rod guide. An insertion hole which connects the first chamber to the second chamber and through which the rod passes is formed in the holder. A connecting groove that connects the first chamber to the second chamber is formed in the second tube to extend in an axial direction.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: May 19, 2015
    Assignee: KAYABA INDUSTRY CO., LTD.
    Inventors: Kousuke Satou, Takashi Kakiuchi
  • Patent number: 8994483
    Abstract: The invention relates to a novel permanent magnet electromagnetic actuator with triggering speed and drive torque improved relative to those of the prior art. The main target application is actuating an electromechanical switch-disconnector specifically for performing the operations to disconnect a mechatronic circuit-breaker for breaking high-voltage direct currents.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: March 31, 2015
    Assignee: Alstom Technology Ltd
    Inventors: Jean-Pierre Dupraz, Wolfgang Grieshaber, Michel Collet
  • Patent number: 8975992
    Abstract: An electromagnetic drive for an electrical switch such as a circuit breaker, has at least one movable armature that can implement a lifting movement along a pushing direction for moving a movable switching contact of the switch. In a closed armature position, the armature closes a magnetic circuit through first and second magnetically conductive yoke parts. A permanent magnet produces a magnetic field for the magnetic circuit and a holding force for holding the armature in the closed position. A coil is disposed to generate a magnetic flux in the same or opposite direction as the magnetic flux of the permanent magnet. The electromagnetic drive can be readjusted after installation, where the first and second yoke parts are moved relative to one another by the permanent magnet into the adjusted state, whereupon they are fixed in position.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: March 10, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Martin Böttcher, Marcus Kampf
  • Publication number: 20150061798
    Abstract: An electromagnetic solenoid having a coil wound around a bobbin between first and second flanges for generating a magnetic force is disclosed. An armature having an armature flange at a first end is within an interior portion of the tubular center section of the bobbin and is supported for axial displacement between a first position and a second position. A permanent ring magnet is placed at the first end flange with an inner radial face spaced apart from an outer radial face of the armature flange by a radial gap, with the ring magnet supported by a retainer adjacent to the first end flange and fixed against axial displacement with respect to the bobbin. The solenoid comprises an outer case having a closed bottom at a first end and an open top at a second end and a flux washer disposed in the open top adjacent to a second end of the armature.
    Type: Application
    Filed: September 2, 2014
    Publication date: March 5, 2015
    Applicant: Flextronics Automotive, Inc.
    Inventors: David Seid, Hamid Najmolhoda, Klynt Baker, John Kovitz
  • Patent number: 8963664
    Abstract: Magnetic field manipulation devices and magnetic actuators are disclosed. In one embodiment, a magnetic field manipulation device includes an iron base substrate having a surface, and at least four electrically conductive loops embedded in the surface of the iron substrate. The at least four electrically conductive loops are electrically coupled to one another, and are arranged in the surface of the iron substrate such that the magnetic field manipulation device diverges magnetic flux lines of a magnetic field generated by a magnetic field source positioned proximate the magnetic field manipulation device. In another embodiment, the at least four electrically conductive loops are electrically isolated such that the magnetic field manipulation device converges magnetic flux lines of a magnetic field generated by a magnetic field source positioned proximate the magnetic field manipulation device.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: February 24, 2015
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Ercan Mehmet Dede, Debasish Banerjee
  • Publication number: 20150027819
    Abstract: The invention relates to a solenoid actuator, consisting of a magnet body (1), a magnet armature, a cover (3) closing the space in which the magnet armature travels back and forth, at least one electric coil (4), which is arranged in the magnet body (1) concentrically around the axis of travel of the magnet armature, and means (5) for power transmission, which are in operative connection with the magnet armature and protrude out of the solenoid actuator. According to the invention, the magnet armature of the solenoid actuator is an axially guided annular magnet armature (2), and the means (5) for power transmission are arranged coaxially around the axis of travel of the annular magnet armature (2). This has the advantage that the solenoid actuator allows long switching paths and a small construction, along with high tightening and holding forces.
    Type: Application
    Filed: September 17, 2012
    Publication date: January 29, 2015
    Applicant: BISCHOFF TECHNOLOGIE-MANAGEMENT GMBH
    Inventors: Hans-Joachim Polack, Hartmut Bischoff
  • Publication number: 20150015352
    Abstract: A linear actuator includes a first tube, a second tube inserted into the first tube to be free to slide, a rod fixed at one end of the rod to the first tube, a rod guide provided on the other end of the rod so as to slide relative to the second tube, a plurality of permanent magnets held by the rod, a holder that is fitted into the second tube and holds a plurality of coils, a first chamber defined between one end of the holder and an end portion of the first tube, and a second chamber defined between the other end of the holder and the rod guide. An insertion hole which connects the first chamber to the second chamber and through which the rod passes is formed in the holder. A connecting groove that connects the first chamber to the second chamber is formed in the second tube to extend in an axial direction.
    Type: Application
    Filed: June 5, 2013
    Publication date: January 15, 2015
    Applicant: KAYABA INDUSTRY CO., LTD.
    Inventors: Kousuke Satou, Takashi Kakiuchi
  • Patent number: 8912871
    Abstract: An electromagnetic actuator comprising a core moving between a latched position and an open position, a permanent magnet, a coil designed to generate a first magnetic control flux to move the core from an open position to a latched position, and a second magnetic control flux designed to facilitate movement of the moving core from the latched position to the open position. The permanent magnet is positioned on the moving core so as to be at least partly outside the fixed magnetic circuit in which the first magnetic control flux flows in the open position, and to be at least partly inside the fixed magnetic circuit used for flow of a magnetic polarization flux of the magnet in the latched position.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: December 16, 2014
    Assignee: Schneider Electric Industries SAS
    Inventors: Michel Lauraire, Jean Pierre Kersusan, Bernard Loiacono
  • Publication number: 20140313000
    Abstract: The invention relates to an electromagnetic actuator having a magnetically soft housing with at least two field coils which are distanced from each other axially, and an armature which is mounted in the housing concentrically to the field coils and which can slide axially, wherein the armature has at least one permanent magnet ring which encloses the armature radially. According to the invention, a non-magnetic sleeve is included which, together with the permanent magnet ring, radially surrounds the armature.
    Type: Application
    Filed: February 21, 2014
    Publication date: October 23, 2014
    Applicant: Kendrion (Villingen) GmbH
    Inventors: Robert Sackl, Joachim Fluehs
  • Patent number: 8854165
    Abstract: Embodiments of soft latching solenoids comprise a coil assembly (24); a plunger assembly (26); at least one flux conductor (28) comprising a flux circuit. The coil assembly (24) is fixedly situated with respect to a solenoid frame (21). The plunger assembly (26) is configured to linearly translate in a first direction along a plunger axis (32) upon application of a pulse of power to the coil assembly (24). The flux conductor(s) (28) is/are positioned radially exteriorly to the plunger assembly (26) to form the flux circuit. The flux circuit comprises the solenoid frame (21), the plunger assembly (26), and the at least one flux conductor (28). The flux circuit is arranged and configured so that the plunger assembly (26) is held in a plunger detent position upon cessation of the pulse of power.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: October 7, 2014
    Assignee: Saia-Burgess, Inc.
    Inventor: James C. Irwin
  • Patent number: 8833732
    Abstract: A valve for processing glue or other media, the valve having magnets, in particular permanent magnets, that are used for actuating a closure member (16). Two individual magnets (22, 23) located opposite one another are provided, at least in a region which is in contact with the medium or glue, with a protective layer or covering (34), which is preferably designed as a cap and consists of titanium, other metal or plastics material, in order to protect the magnets (22, 23) against the effects of the medium.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: September 16, 2014
    Assignee: Focke & Co. (GmbH & Co. KG)
    Inventors: Neudeck Heiko, Sylvia Rose, Jan Schnakenberg, Marc-Daniel Stegen
  • Patent number: 8803644
    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: Grant
    Filed: January 26, 2009
    Date of Patent: August 12, 2014
    Assignee: J. Dams Beheer B.V.
    Inventor: Johannes Adrianus Antonius Theodorus Dams
  • Publication number: 20140218143
    Abstract: In one of its aspects the technology disclosed herein concerns a process of making a rotary solenoid. In a generic mode, the process comprises fitting together two mating core half members (22A, 22B) of a stator until two respective pole faces (32A, 32B) of the two mating core half members (22A, 22B) press to a positive stop against a precision diameter pin positioned between the two mating core half members and so that the two mating core half members interlock at the positive stop. The process further comprises removing the precision diameter pin to provide an axially extending space comprising a predetermined distance between the two respective pole faces (32A, 32B). The process further comprises inserting a rotor (26) within the axially extending space. The process further comprises fitting the two mating core half members (22A, 22B) and the rotor (26) between the two opposing end caps (20, 30).
    Type: Application
    Filed: December 17, 2013
    Publication date: August 7, 2014
    Applicant: Johnson Electric S.A.
    Inventor: James M. GRUDEN
  • Patent number: 8786387
    Abstract: A magnetic actuator includes a coil bobbin that has electrical wire wound around a core. The magnetic actuator also includes a plunger located in a central portion of the magnetic actuator and configured to move within a bore located in the central portion, and at least one spring located adjacent the central portion. When electrical current is provided to the electrical wire, an electromagnetic field causes the plunger to move from a first position to a second position, and stored energy associated with the spring aids in moving the plunger to the second position. The magnetic actuator further includes a linking portion coupled to the plunger, wherein the linking portion is configured to initiate an action based on movement of the plunger.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: July 22, 2014
    Assignee: Thomas & Betts International, Inc.
    Inventors: Robert Fong, Geoffrey Reed
  • Patent number: RE46449
    Abstract: A rotating electromagnetic machine has a tubular axle with mounting rings, a common ring, a coil input ring, and at least one bearing set mounted on it. A fitting is secured at a distal end of the tubular axle, and a commutator is secured at the proximal end. A housing is mounted on the bearing sets through adaptors. Connecting bars extend axially within the axle with lateral rods joined to the connecting bars at their distal ends, the bars commuting between segments of the commutator electromagnetic coils. A plurality of the electromagnetic coils are secured to the coil input ring. The coils are formed of spiral turns of a single flat strip electrically conductive material. A plurality of peripheral and sector magnets are mounted adjacent to the electromagnetic coils with electromagnetic interaction when relative motion occurs between the coils and the magnets.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: June 20, 2017
    Assignee: ClearWater Holdings, Ltd.
    Inventor: Dumitru Bojiuc