Magnetic Bearing Patents (Class 310/90.5)
  • Patent number: 11978589
    Abstract: A magnetic actuator for a magnetic suspension system includes a core section having an annular yoke and radially directed teeth joining the yoke. The magnetic actuator includes coils surrounding the teeth and a mechanical structure having a first section and a second section. The first section is attached to the yoke and conducts magnetic flux axially. The second section joins the first section and conducts the magnetic flux radially in a direction opposite to a direction of the magnetic flux in the teeth. The magnetic actuator includes a mechanical safety bearing that is between the second section and the teeth. Thus, the safety bearing is in a room surrounded by a magnetic flux circulation path. Therefore, the safety bearing does not increase an axial length of the magnetic suspension system.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: May 7, 2024
    Assignee: SPINDRIVE OY
    Inventor: Nikita Uzhegov
  • Patent number: 11978602
    Abstract: A switch apparatus, includes: a base module including a base case, and a moving magnet movably mounted in the base case; and a manipulation module including a manipulation case, and a first magnet fixedly mounted in the manipulation case, wherein the moving magnet moves between a hold position and a releasable position, the hold position refers to a position in which the manipulation module is held onto the base module as an attractive force acts between the moving magnet and the first magnet, and the releasable position refers to a position in which the manipulation module is releasable from the base module as a repulsive force acts between the moving magnet and the first magnet.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: May 7, 2024
    Assignees: Hyundai Motor Company, Kia Corporation, NOVATECH CO., LTD, ALPS ELECTRIC KOREA CO., LTD.
    Inventors: Sang Hoon Shin, Hoo Sang Lee, Jong Hyun Choi, Dae Woo Park, Youn Tak Kim, Nam I Jo, Choon Teak Oh, Hong Jun Choi, Kon Hee Chang, Woo Joo Ahn
  • Patent number: 11964831
    Abstract: An apparatus including a first device configured to support a substrate thereon; a first transport having the first device connected thereto, where the first transport includes: rails or maglev guides; a magnetic system configured to vertically space the first device over the rails or maglev guides with a gap between the first device and the rails or maglev guides, where the magnetic system comprises a first electromagnetic actuator at a first corner of a first side of the first device, a second electromagnetic actuator at a second corner of the first side of the first device, and a third electromagnetic actuator at a second opposite side of the first device, where the third electromagnetic actuator is not located proximate a corner of three sides of the first device; and a linear actuator configured to move the first device along the rails or maglev guides.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: April 23, 2024
    Assignee: Persimmon Technologies Corporation
    Inventors: Martin Hosek, Sripati Sah, Scott Frash
  • Patent number: 11965685
    Abstract: Provided are a magnetic bearing compressor, an air conditioner and a protective air gap value setting method. The magnetic bearing compressor includes: a rotor, a magnetic bearing, a sensor, and a control device. The magnetic bearing is sleeved on the rotor; the sensor is arranged on the magnetic bearing and is configured to detect a distance value between the rotor and the sensor on a preset plane; the control device is configured to receive the distance value and determine the minimum distance value and the maximum distance value between the rotor and the magnetic bearing according to the distance value, and obtain an absolute value of a difference of the maximum distance value and the minimum distance value; and the control device obtains a protective air gap value according to the absolute value and a preset protection coefficient when the absolute value is less than or equal to a preset air gap value.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: April 23, 2024
    Assignees: HEFEI MIDEA HEATING & VENTILATING EQUIPMENT CO., LTD., GD MIDEA HEATING & VENTILATING EQUIPMENT CO., LTD. Foshan (CN)
    Inventors: Bin Yang, Fengshuang Wang
  • Patent number: 11955277
    Abstract: Today, chemical rockets are the most expensive components of a launch; even reusable boosters require costly fuel, ongoing maintenance, and long durations between launches. As a result, far too many space bound opportunities are prohibitively expensive. However, kinetic launchers offer an economical alternative for projecting payloads into orbit. Harnessing angular velocity, a centrifuge gradually accelerates its payload to hypersonic speeds within a vacuum sealed chamber; upon reaching the desired speed, its airlock opens and the payload is released into the atmosphere. Flux-Pinned Superconductors offer a radical advancement to this technology; wherein, Flux Pinning is used to levitate and stabilize the launch package while reinforcing the entire platform against centrifugal stress. These Flux-Pinned joints require no power, lubricant or physical contact, while providing limitless stiffness that is essentially impervious to mechanical wear.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: April 9, 2024
    Inventor: Christopher Hugh Powell
  • Patent number: 11944543
    Abstract: The application is directed to devices and methods where one or more magnetic or magnetizable implants provides therapeutic benefits to a patient. The implant may be useful for expanding the range of motion of joints or dynamically providing different responses to changing conditions in the body where the implant is placed. An electromagnet is placed on or in a bone on one side of a joint, and another electromagnet or magnetically active material is placed on or in a bone on the opposing side of the joint. The electromagnet may be continuously energized to relieve pressure in the joint space, or may be energized in response to forces applied to the joint.
    Type: Grant
    Filed: February 28, 2023
    Date of Patent: April 2, 2024
    Assignee: P TECH, LLC
    Inventors: Peter M. Bonutti, Justin E. Beyers
  • Patent number: 11940086
    Abstract: A table rotation device includes a bearing assembly, a table support member, a support block, and a cooling block. The bearing assembly includes a fixed ring, a movable ring, and rolling elements provided between the fixed ring and the movable. The movable ring is rotatable about the rotation axis. The table support member is connected to the movable ring so as to fix a position of the table support member relative to a position of the movable ring. The support block is connected to the fixed ring so as to fix a position of the support block relative to a position of the fixed ring. The cooling block is connected to at least one of the fixed ring and the support block such that the cooling block is in contact with both the fixed ring and the support block. The cooling block provides a cooling passage.
    Type: Grant
    Filed: May 18, 2022
    Date of Patent: March 26, 2024
    Assignee: YAMAZAKI MAZAK CORPORATION
    Inventors: Jojiro Kimura, Makoto Tahara, Nobuhiro Sakai
  • Patent number: 11923737
    Abstract: A flywheel system includes a rotor and a fixture. The rotor forms an aperture. The fixture includes a bottom support, a top support, and a shaft connecting the bottom support to the top support. The shaft passes through the aperture. The bottom support and the top support are outside opposite ends of the aperture. The rotor is configured to rotate about the shaft. A method for operating a flywheel system includes converting between rotational energy of a rotor and electrical energy in windings of a generator stator that is implemented in a stationary shaft passing through an aperture of the rotor, while the rotor is rotating about the shaft.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: March 5, 2024
    Assignee: WATTSUP POWER A/S
    Inventors: John Røn Pederson, Martin Speiermann, Jacopo Granata, Valère Combescot, Mikael Eronen
  • Patent number: 11915863
    Abstract: A passive magnetic constant-force apparatus comprises a geometry and arrangement of permanent magnets, ferromagnetic components, and non-magnetic structural components. The apparatus is easily and precisely adjustable, cost-effective, with a high load capacity, and with minimal parasitic forces. The apparatus is suitable for use as a counterbalance for vertical linear motion applications and may be integrated with or attached to a linear motion stage.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: February 27, 2024
    Assignee: Zaber Technologies Inc.
    Inventors: Jacob Daniel Bayless, Graham Daniel Kerr, Jacob William Hardes
  • Patent number: 11906411
    Abstract: A method and a device for the measurement of one or more fluid-mechanically effective parameters of a fluid, with a fluid pump which comprises a delivery element which is mounted in a magnet bearing, and the delivery element of the fluid pump is excited into an oscillation by way of an excitation device, wherein the oscillation parameters as well as, as the case may be, the oscillation behaviour is measured, and parameters of the fluid are determined from this.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: February 20, 2024
    Assignee: Berlin Heart GmbH
    Inventors: Kurt Graichen, Andreas Arndt, Peter Nuesser
  • Patent number: 11905993
    Abstract: A turbomachine according to an embodiment of the present disclosure may include a rotary shaft, a magnetic bearing including a core body configured to surround the rotary shaft, a plurality of poles radially extending from an inner surface of the core body toward the rotary shaft, and coils wound around the plurality of poles to levitate the rotary shaft by using a magnetic force generated by a magnetic field formed by applied electric current, a sleeve journal bearing disposed between the rotary shaft and the magnetic bearing so as to surround the rotary shaft and configured to levitate the rotary shaft by generating a dynamic pressure when the rotary shaft rotates, and a permanent magnet disposed between the plurality of poles and configured to support the rotary shaft by using a magnetic force.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: February 20, 2024
    Assignee: Korea Institute of Science and Technology
    Inventors: Yong Bok Lee, Jungwan Kim, Yunseok Ha, Byul An, Wonil Kwak, Yeong-do Lee
  • Patent number: 11899081
    Abstract: A wireless sensor for an associated machine or machine part which includes a communications module that wirelessly transmits data related to the associated machine or machine part. The communications module is mounted on the sensor and the sensor is disposed under the bottom side of the control circuitry. A sensor is configured to measure one or more properties of the associated machine or machine part. The wireless sensor can be used with a smart device app such that information from the wireless sensor can be received and displayed on the smart device.
    Type: Grant
    Filed: January 24, 2023
    Date of Patent: February 13, 2024
    Assignee: BARNES GROUP INC.
    Inventors: Kevin R. Darrah, Michael O. Culbertson, Steven J. Reilly, Kelvin L. Knipl, Jr.
  • Patent number: 11876431
    Abstract: A magnetic bearing contactlessly supporting a rotor by magnetic force includes: a bearing rotor member made of a magnetic material; and a bearing stator member arranged around bearing rotor member. The bearing stator member includes a core made of a magnetic material and a coil wound around the core. A longitudinal cross-sectional shape of the core has a first part extending in a first direction orthogonal to a direction opposed to the bearing rotor member and wound around with the coil, a pair of second parts extending from both end portions in the first direction of first part to the bearing rotor member side and subsequently extending in a direction approaching each other in the first direction, and a pair of third parts extending from respective distal end portions of the pair of second parts toward the bearing rotor member side. The bearing rotor member also includes a permanent magnet.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: January 16, 2024
    Assignee: IWAKI CO., LTD.
    Inventors: Toshiki Oniduka, Shinichirou Koreeda, Toshiaki Kamei, Takuya Seki
  • Patent number: 11855519
    Abstract: The present disclosure provides a magnetic suspension bearing stator, a compressor and an air conditioner. The bearing stator includes a frame, a bearing iron core and an axial winding, the frame is provided with an accommodation recess used to position the axial winding. A position-limiting portion is disposed in the accommodation recess, and the position-limiting portion is used to keep the axial winding in the accommodation recess. The frame is provided with a first positioning portion for connecting with the bearing iron core on the outer wall surfaces of both sides of the accommodation recess. The frame is not easy to come out from the bearing core, and the axial winding is not easy to come out from the frame, so that the relative position between the axial winding and the bearing iron core is fixed.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: December 26, 2023
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Chao Zhang, Fang Zhang, Gao Gong, Jiuzhan Su, Xin Li, Ruhao Dong, Mingxing Deng, Penghui Liu, Fei Wang, Rui Wu, Weijie Zhao, Zhitao Wei, Jianhui Wang, Dunying Zhong, Zhanqin Liu
  • Patent number: 11837972
    Abstract: The present invention relates to a soft robot using diamagnetic levitation. Such a soft robot using diamagnetic levitation is formed of a diamagnetic material to levitate on the ground on which a magnetic field is formed, and moves in a direction toward a predetermined point of a head part when the predetermined point of the head part is heated, and may thus move and change its direction in a state in which it is not in contact with the ground.
    Type: Grant
    Filed: August 30, 2022
    Date of Patent: December 5, 2023
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Taek-Soo Kim, Ji Hun Kim, Jae-Bum Pyo
  • Patent number: 11811340
    Abstract: Provided is a control device for a rotating electric machine, the control device being configured to control an inverter configured to apply a voltage to each phase winding of a rotating electric machine, to thereby control, for the each phase winding, a current to be supplied to the each phase winding, the control device including a control unit configured to: calculate a voltage command value to be applied to the each phase winding so that a phase difference between harmonic components of the same order in a radial magnetic flux density and a circumferential magnetic flux density of an air gap portion between a stator core and a rotor core of the rotating electric machine becomes a phase difference target value determined in advance, and to control the inverter in accordance with the calculated voltage command value.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: November 7, 2023
    Assignees: MITSUBISHI ELECTRIC CORPORATION, SHIBAURA INSTITUTE OF TECHNOLOGY
    Inventors: Yoshihiro Miyama, Kan Akatsu, Yuki Sakai, Hiroki Hijikata
  • Patent number: 11808272
    Abstract: A pressure difference of liquid is generated between an upper end and a lower end of a thread groove by the action of a thread groove pump formed between the thread groove and a lower end wall portion of a rotating rotor shaft. As a result, liquid of a bottom space is sucked up and passes through a hollow hole and is discharged to the outside of the rotor shaft through communication holes. The discharged liquid passes through the inside of a hub of a rotating body and reaches an extension member where it is sprayed radially in the form of droplets from a protrusion. The droplets are received by a partition wall. Due to the presence of a protrusion in an upper portion of the partition wall, the droplets cannot cross over the partition wall. The accumulated liquid drops through a communication hole to the bottom space.
    Type: Grant
    Filed: December 25, 2019
    Date of Patent: November 7, 2023
    Assignee: Edwards Japan Limited
    Inventor: Takashi Kabasawa
  • Patent number: 11804762
    Abstract: A flywheel system includes a fixture providing a base and a stator, rotor having a cavity to receive the stator, a generator/motor module having a plurality of permanent magnets mechanically coupled to the rotor and an active magnetic bearing module. The active magnetic bearing module includes a plurality of magnetizable elements mechanically coupled to or integrated in the rotor, and a plurality of electromagnets mechanically coupled to a shaft and configured to magnetically couple with the plurality of first magnetizable elements to actively stabilize the rotor relative to the fixture. The windings of the generator/motor module are arranged around the rotation axis of the rotor at a first distance from the rotation axis of the rotor, the electromagnets of the active magnetic bearing module are arranged around the rotation axis of the rotor at a second distance, and the first distance is greater than or equal to the second distance.
    Type: Grant
    Filed: January 24, 2023
    Date of Patent: October 31, 2023
    Assignee: WattsUp Power A/S
    Inventors: John Røn Pedersen, Martin Speiermann, Jamshid Zamany
  • Patent number: 11802568
    Abstract: A vacuum pump includes a linked-type thread-groove spacer which is a structure for linking a Siegbahn pump portion and a thread-groove pump portion, and when an outlet position of a thread groove which is an exhaust channel portion of this linked-type thread-groove spacer is in a vicinity of the stator portion (stator bolt) of the stator column, conductance of the exhaust channel is lowered. Thus, phases in a circumferential direction of installation positions of a thread ridge of the linked-type thread-groove spacer and the stator portion of the stator column are aligned as much as possible. In other words, the thread groove of the linked-type thread-groove spacer which is the exhaust channel is provided between the installation positions of the stator portions in the circumferential direction of the stator column so that lowering of the conductance of the exhaust channel is suppressed.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: October 31, 2023
    Assignee: Edwards Japan Limited
    Inventors: Shunsuke Takeda, Yoshiyuki Sakaguchi
  • Patent number: 11804767
    Abstract: The invention relates to a magnetic coupling element (100) with a magnetic bearing function. The magnetic coupling element (100) has a drive-side coupling magnet (109) arranged on a drive shaft (106), and also an output-side coupling magnet (115) arranged on an output shaft (112), the output-side coupling magnet (115) being magnetically coupled to the drive-side coupling magnet (109), and finally a bearing magnet ring (118) which is non-rotatably mounted with respect to the drive-side or output-side coupling magnet (109) or (115), a bearing magnet portion (133, 136) of the bearing magnet ring (118) having the same polarity as a coupling magnet portion (127, 130) opposite the bearing magnet portion (136).
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: October 31, 2023
    Assignee: KARDION GMBH
    Inventors: Andreas Vogt, Armin Schuelke, Xiang Li, David Minzenmay
  • Patent number: 11781551
    Abstract: A blood pump system includes a pump housing and an impeller for rotating in a pump chamber within the housing. The impeller has a first side and a second side opposite the first side. The system includes a stator having drive coils for applying a torque to the impeller and at least one bearing mechanism for suspending the impeller within the pump chamber. The system includes a position control mechanism for moving the impeller in an axial direction within the pump chamber to adjust a size of a first gap and a size of a second gap, thereby controlling a washout rate at each of the first gap and the second gap. The first gap is defined by a distance between the first side and the housing and the second gap is defined by a distance between the second side and the pump housing.
    Type: Grant
    Filed: April 26, 2021
    Date of Patent: October 10, 2023
    Assignee: TC1 LLC
    Inventors: Masamichi Yanai, Shunzhou Yu, Tao Zhang
  • Patent number: 11760205
    Abstract: Magnetic levitation transport using a parallel dipole line track system is provided. In one aspect, a magnetic levitation transport system includes: a dipole line track system having: i) multiple segments joined together, each of the multiple segments having at least two diametric magnets, and ii) at least one diamagnetic object levitating above the at least two diametric magnets. A method for operating a magnetic levitation transport system is also provided.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: September 19, 2023
    Assignee: International Business Machines Corporation
    Inventor: Oki Gunawan
  • Patent number: 11728716
    Abstract: A stator assembly and a center disk spindle double-rotor motor, includes a stator carrier and a winding core body; a through slot is formed in an end surface of the stator carrier in a penetrating manner; and the winding core body is arranged in the through slot. The center disk spindle double-rotor motor includes a transmission shaft, a stator assembly and rotor assemblies; the stator assembly is arranged on the transmission shaft; the transmission shaft can rotate relative to the stator assembly; the transmission shaft is fixedly provided with the rotor assemblies on two sides of the stator assembly. The whole center disk spindle double-rotor motor uses a double-rotor structure; and by means of the stator assembly of a specific structure, and in combination with the rotor assembly, the motor has beneficial effects of high efficiency, high power, large torque, low loss, light mass, good heat dissipation and the like.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: August 15, 2023
    Inventor: Jian Liu
  • Patent number: 11710991
    Abstract: A high voltage electric machine and power distribution system including one or more of such electric machines are provided. In one aspect, a high voltage electric machine includes a stator, a rotor, and a housing encasing at least a portion of the stator and rotor. The stator is modularized into cascaded voltage stator modules. The stator modules are galvanically isolated from one another by intermodular separators. At least one intermodular separator is positioned between each adjacent pair of stator modules. The stator modules are also galvanically isolated from the housing by a housing separator. The housing separator is positioned between the stator modules and the housing. Each stator module has an associated set of windings that are wound only within their associated stator module.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: July 25, 2023
    Assignee: General Electric Company
    Inventor: Mohamed Osama
  • Patent number: 11703085
    Abstract: An electric motor system includes a drive shaft, first and second magnetic bearing portions facing each other and supporting the drive shaft, an electric motor to rotate the drive shaft, and a gap detection unit to detect a position of the drive shaft During rotation of the drive shaft, greater external force acts, on average, on the drive shaft in a first direction than in a second direction. The first and second direction extend from the second and first magnetic bearing portions to the first and second magnetic bearing portion. The first and second magnetic bearing portions produce first and second magnetic forces on the drive shaft in the first and second directions. A magnitude of the second magnetic force is greater than a magnitude of the first magnetic force. The gap detection unit is arranged closer to the second magnetic bearing portion than to the first magnetic bearing portion.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: July 18, 2023
    Assignee: Daikin Industries, Ltd.
    Inventor: Atsushi Sakawaki
  • Patent number: 11703083
    Abstract: Bearing assemblies and methods of using bearings are provided in the present disclosure. In one embodiment, a bearing ring is provided having a plurality of carrier components removably coupled therewith. Each carrier component may carry one or more bearing elements. Upon wearing of the bearing elements beyond a desired amount, the carrier components may be removed from the bearing ring and installed in a different bearing ring to place the mearing elements at their original bearing surface radius. In another embodiment, individual bearing elements may be radially adjustable relative to the bearing ring to define and redefine the radius of a radial bearing surface.
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: July 18, 2023
    Assignee: US Synthetic Corporation
    Inventors: Jair J. Gonzalez, Leonidas C. Leite
  • Patent number: 11698027
    Abstract: A system (1) for vibration management comprises a stator (24, 45); a rotor (26) being mounted rotatably with respect to the stator (24, 45) about a rotational axis (9); one or more active devices (41A-41C) adapted to apply forces and/or moments on the rotor (26) and/or on the stator (24, 45); at least two sensors (42) for measuring vibrational parameter values with respect to two or more different positions, particularly along the rotational axis (9); and a controller (44) adapted to provide control signals to the one or more active devices (41A-41C) based on the vibrational parameter values of the at least two sensors (42) and on the respective position.
    Type: Grant
    Filed: May 5, 2022
    Date of Patent: July 11, 2023
    Assignee: ROLLS-ROYCE DEUTSCHLAND LTD & CO KG
    Inventor: Lucia Ciciriello
  • Patent number: 11698287
    Abstract: Embodiments of the invention are shown in the figures, where a system for vibration detection is shown, the system comprising: one or more drivelines including a rotatable component rotatable about a rotational axis relative to another component; an electrical machine having a rotor and a stator rotatable with respect to one another, the rotor being arranged to at least one of drive and be driven by a part of the driveline, the electrical machine being adapted to provide signals indicative for at least one of a motion and a force between the rotor and the stator and a torque applied on the rotor; and an analysis unit adapted to receive the signals and to detect a vibration signature of the rotatable component with respect to the other component based on the signals.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: July 11, 2023
    Assignee: ROLLS-ROYCE DEUTSCHLAND LTD & CO KG
    Inventor: Lucia Ciciriello
  • Patent number: 11689144
    Abstract: A power transforming apparatus for supplying power to a motor having a magnetic bearing includes: a converter configured to, in an initial operation, receive AC power, and an auxiliary circuit performing initial charging by rectifying the AC power to a second power and supplying the rectified second power to an inverter controller and a magnetic bearing controller. The inverter controller outputs a signal to an inverter using the second power and controls the inverter to supply a rectified DC voltage to the converter, and the converter is configured to, during a normal operation, stop supplying the second power to the inverter controller and control the rectified DC voltage to be supplied to the inverter controller and the magnetic bearing controller, and, based on a power failure being detected, outputs a control signal such that the second power is supplied to the inverter controller and the magnetic bearing controller.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: June 27, 2023
    Assignee: LG Electronics Inc.
    Inventors: Kyungmin Kim, Bohwan Seo, Seungjoo Lee, Jiyoun Jeong
  • Patent number: 11684215
    Abstract: An accessory for use with a container of a food processing system includes a body positionable within a base of the food processing system, said body having a first side and a second side, an opening formed in said body, a member configurable with said opening to selectively seal said opening, said member being arranged at said second side of said body, a vacuum sealing assembly for sealing a chamber of the container, and a release mechanism operable to selectively fluidly couple said chamber to an ambient atmosphere.
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: June 27, 2023
    Assignee: SHARKNINJA OPERATING LLC
    Inventors: Sam William Bannister, Ross Richardson, Michael Ting, Jared Proulx, Kristof Benedict Fogarasi, Joshua D. Anthony, Nicholas Michael O'Loughlin, Kevin Pei, Zintis Jones
  • Patent number: 11682944
    Abstract: This disclosure relates to an axial magnetic bearing for a centrifugal refrigerant compressor, and a corresponding system and method. A centrifugal refrigerant compressor system according to an exemplary aspect of the present disclosure includes, among other things, an impeller connected to a shaft, and a magnetic bearing system supporting the shaft. The magnetic bearing system includes an axial magnetic bearing, which itself includes a first permanent magnet configured to generate a first bias flux, a second permanent magnet axially spaced-apart from the first permanent magnet and configured to generate a second bias flux, and an electromagnet. The electromagnet includes a coil arranged radially outward of the first and second permanent magnets, and the electromagnet is configured to selectively generate either a first control flux or a second control flux to apply a force to the shaft in a first axial direction or second axial direction opposite the first axial direction, respectively.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: June 20, 2023
    Assignee: DANFOSS A/S
    Inventors: Delvis Anibal Gonzalez, Lin Xiang Sun
  • Patent number: 11680572
    Abstract: A position deviation calculated by a subtractor of a vacuum pump is input to the PIDs of three modes. The first PID is a PID controller for a high-bias mode, the second PID is a PID controller for a high-rigidity mode, and the third PID is a PID controller for a low-rigidity mode. The output signal of the third PID is extracted as a change of an indicator current for each clock of a PWM frequency and then the mean value of a change of an indicator current for several clocks is determined in a calculating unit. At this point, a switching control unit performs an operation on whether the mean value of the averaged change of the indicator current is larger than a preset redetermined value and then according to the result, an ? value is outputted in the range of 0 to 1 from the switching control unit.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: June 20, 2023
    Assignee: Edwards Japan Limited
    Inventors: Yoshimasa Ezawa, Hideo Fukami, Kou Sato
  • Patent number: 11651336
    Abstract: Techniques are described for determining data dependent alert profiles to be presented on sender and/or receiver computing devices in response to a request for transfer of a data from the sender to the receiver. The alert profiles are determined based on a value of the data. The sender alert profile may be determined based on the information on sender accounts and the receiver alert profile may be determined based on the information on the receiver account. The alert profiles may be determined based on a history of the data transfer between the sender and the receiver, or account history of either the sender or the receiver, or the history of the data transfer within the system. The alert profiles may be presented on computing devices, for example through haptic actuators, to provide a sense of the data value to the user.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: May 16, 2023
    Assignee: United Services Automobile Association (USAA)
    Inventors: Edward Manuel Alonzo, III, Paul Joseph Craig, Robin Mangum, Brady Gordon, Esteban Rojas, Kenneth Daniel Zeitung
  • Patent number: 11649855
    Abstract: A processing system includes a housing having an interior chamber and a central vertical axis extending through the interior chamber. A rotor is disposed within the housing interior chamber and is configured to support one or more work pieces. At least one lift actuator is configured to linearly displace the rotor along the central vertical axis between a lower, inactive vertical position and an upper, transfer vertical position. At least one levitation actuator is spaced above the rotor and is configured to exert a magnetic pulling force on the rotor to levitate the rotor upwardly from the transfer vertical position to a working vertical position. Further, an annular stator assembly is coupled with the housing, is disposed about and spaced radially outwardly from the rotor and includes a motor stator, the at least one lift actuator being configured to vertically displace the rotor relative to the stator assembly.
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: May 16, 2023
    Assignee: SKF CANADA LIMITED
    Inventor: Daren Paul Tremaine
  • Patent number: 11644010
    Abstract: The present invention is an energy storage system comprising a mechanical bellows having an outer flexible material casing with one or more functional elements that operate as actuators for expanding and contracting the outer flexible material casing to store or deliver energy.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: May 9, 2023
    Assignee: STAR SAILOR ENERGY, INC.
    Inventor: Pamela A. Menges
  • Patent number: 11646645
    Abstract: A method of producing an electromagnetic mat for forming a stator or rotor component of an electric machine. The electromagnetic mat has structural fibre lengths and a plurality of winding fibre lengths for forming a winding fibre that is in a winding pattern for forming one or more windings of the electric machine. The electromagnetic mat is formed by forming a support structure with the structural fibre lengths and inserting the winding fibre lengths into the support structure so that the winding fibre lengths extend across the structural fibre lengths and the structural fibre lengths lock the winding fibre lengths in position.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: May 9, 2023
    Assignee: Alva Industries AS
    Inventor: Jörgen Selnes
  • Patent number: 11641546
    Abstract: A method for minimizing post-playback oscillation during playback of a haptic playback waveform to a haptic transducer may include determining whether a frequency response of the haptic playback waveform has a notch with a notch frequency at approximately a resonant frequency of the haptic transducer and, responsive to the notch frequency differing from the resonant frequency, modifying the haptic playback waveform for playback to the haptic transducer by shifting the notch frequency to approximately the resonant frequency.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: May 2, 2023
    Assignee: Cirrus Logic, Inc.
    Inventors: Kok Chin Chang, Marco Janko, Kyle Wilkinson
  • Patent number: 11626225
    Abstract: A device for generating an electric charge, having: a base; at last one capacitor; at least one magnet; a cover; a splitter; a load; a conductive core; a frictionless surface; and at least one discharge point. The at least one capacitor adapted and configured to store electricity generated from the electric charge. The splitter is adapted and configured to receive a first portion of electricity from the conductive core and divert a second portion of electricity back to the at least one capacitor and further divert a third portion of electricity to the load. The load is adapted and configured to store electricity and use a fraction of the total electricity generated by the device. The at least one magnet is adapted and configured to levitate and rotate on an electromagnetic rail around said conductive core in an infinite loop, wherein said rotation causes a magnetic field.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: April 11, 2023
    Inventor: Ryan Letts
  • Patent number: 11608857
    Abstract: A passive magnetic bearing employs eddy currents in a copper core between neodymium annular magnets to support the copper core and an associated rotating shaft. The copper core has an annular flange that is coaxial with a hollow cylinder. The hollow cylinder supports a rotating shaft. An annular iron core is coaxial with and surrounds the annular flange. Annular neodymium magnets surround the upper and lower portions of the hollow cylinder. In some embodiments a touch-down bearing is made up of an upper and a lower bearing race that are spaced away from the upper surface and lower surface of the annular flange. The core rotates over the bearing race(s) until sufficient magnetic flux is generated to support the copper core and hence the shaft. Once spinning, a magnetic field is generated in the copper core.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: March 21, 2023
    Inventor: Robert Lothar Monteith
  • Patent number: 11592060
    Abstract: An active magnetic bearing apparatus for supporting a rotor of a rotary machine comprises an axial magnetic bearing unit and a radial magnetic bearing unit mounted directly to one another. One of the axial magnetic bearing unit and the radial magnetic bearing unit is mounted to a support for attachment to a housing of the rotary machine.
    Type: Grant
    Filed: December 28, 2021
    Date of Patent: February 28, 2023
    Assignee: Ingersoll-Rand Industrial U.S., Inc.
    Inventors: Esa Heikki Matias Vikman, Fredrik Boxberg, Juha T. Saari, Petri J. Maki-Ontto, Lauri Juhani Salmia
  • Patent number: 11594945
    Abstract: A flywheel system includes a rotor configured to rotate about a rotation axis. The flywheel system further includes a fixture and an active magnetic bearing module for actively stabilizing the rotor relative to the fixture. The active magnetic bearing module includes a plurality of first magnetizable elements mechanically coupled to or integrated in the rotor, and a plurality of electromagnets mechanically coupled to the fixture and configured to magnetically couple with the plurality of first magnetizable elements to actively stabilize the rotor relative to the fixture. Each of the first magnetizable elements is farther than each of the electromagnets from the rotation axis.
    Type: Grant
    Filed: February 28, 2022
    Date of Patent: February 28, 2023
    Assignee: NOBLE DRILLING A/S
    Inventors: John Røn Pedersen, Martin Speiermann, Jamshid Zamany
  • Patent number: 11585235
    Abstract: A shaft assembly for use with a turbine engine includes a shaft and a magnetic mode control unit. The shaft extends along an axis and is configured to rotate about the axis. The magnetic mode control unit is configured to control deflection of the shaft as the shaft rotates about the axis.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: February 21, 2023
    Assignee: Rolls-Royce North American Technologies Inc.
    Inventor: Timothy Unton
  • Patent number: 11585404
    Abstract: A vibration damping actuator provided by the present disclosure uses a magnet system or a spring system to introduce controllable negative stiffness characteristics into a semi-active system, so as to couple a controllable negative stiffness actuator on the basis of the semi-active actuator (controllable damping actuator). Based on the coupling and integration of the semi-active actuator (controllable damping actuator) and the controllable negative stiffness actuator, the vibration damping actuator may realize four-quadrant mechanical characteristics of an active actuator, improve the vibration damping effect of the semi-active system on the basis of ensuring the advantages of low power consumption, low cost, stability and reliability, and simple structure of the vibration control system of the semi-active actuator (controllable damping actuator), and improve the vibration isolation effect of the semi-active system to a level close to that of an active system.
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: February 21, 2023
    Assignee: Hefei University of Technology
    Inventors: Xianxu Bai, Zhuangzhuang Lv
  • Patent number: 11579698
    Abstract: Aspects of the technology employ synchronized arrays of low-cost, readily available vibration actuators to emulate and outperform single actuator systems, bringing together sets of actuators to create desired control effects. This approach involves coherent phase switching and modulation of a linear actuator array. A pair of linear resonant actuators (LRAs) may be employed for improved haptic waveform synthesis performance. According to one feature, energy may stored in the mechanical inertia of the LRA via velocity and stiffness of the LRA via displacement and released through modulation of the relative phase of the LRAs. Phase switching and modulation techniques may be used to control more than two LRAs, and in other arrangements than a dual LRA, including, but not limited to architectures that have LRAs arranged in multiple directions in an array spanning, for example, the two dimensions of a plane, or three dimensions of physical space.
    Type: Grant
    Filed: August 10, 2021
    Date of Patent: February 14, 2023
    Assignee: GENERAL VIBRATION CORPORATION
    Inventors: Nikhil Bajaj, George T.-C. Chiu, John Houston, Rob Morris
  • Patent number: 11574753
    Abstract: The present disclosure provides a support device and a display apparatus. The support device includes: a support platform; a base disposed opposite to the support platform; and a plurality of superconducting magnetic levitation structures, each of the superconducting magnetic levitation structures including a superconductor and a magnet disposed oppositely; in each of the superconducting magnetic levitation structures, one of the superconductor and the magnet is disposed on the support platform, and the other is disposed on the base. The plurality of superconducting magnetic levitation structures are arranged to operate independently of each other without interference, and a repulsive force between the superconductor and the magnet of each of the superconducting magnetic levitation structures is set to be adjustable.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: February 7, 2023
    Assignees: CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Sijun Lei, Liang Gao, Yuxu Geng, Dengqian Li
  • Patent number: 11549515
    Abstract: A vacuum pump includes a control unit that monitors and controls a motor and a magnetic bearing, each being stored in a pump body. A temperature-adjustment function unit measures a temperature of the pump body by at least one temperature sensor disposed in the pump body and controls at least one heater or solenoid controlled valve based on the temperature. The temperature-adjustment function unit includes a first terminal capable of connecting or disconnecting the temperature sensor and a second terminal capable of connecting or disconnecting one of the heater and the solenoid controlled valve. A self-diagnosis unit capable of conducting a self-diagnosis of whether an input signal to the first terminal has been normally inputted or whether the signal has been normally outputted from the second terminal.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: January 10, 2023
    Assignee: Edwards Japan Limited
    Inventors: Hideo Fukami, Masatoshi Ishibashi
  • Patent number: 11530649
    Abstract: The torque transfer assembly can include a sleeve having an elongated internal opening, a shaft having an elongated body extending in the internal opening of the sleeve, a first coupler at a first end of the elongated body coupled to a gas turbine engine rotor, and a second coupler at a second end of the elongated body coupled to a generator, the second coupler opposite the first coupler relative to a length of the elongated body, the shaft being made of a metal, and a bushing extending around the elongated body of the shaft, trapped between the shaft and the sleeve, the bushing made of plastic, the bushing having a coefficient of thermal expansion greater than a coefficient of thermal expansion of the sleeve.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: December 20, 2022
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Daniel Alecu, David Menheere
  • Patent number: 11532416
    Abstract: A magnetic levitation device as a toy or a bearing is provided. The magnetic levitation device has an inner component and an outer component. Multiple magnet rings are mounted on the inner component and multiple magnet rings are mounted on the outer component. The magnet rings on the inner component attract the magnet rings on the outer component. Multiple pulley assemblies are mounted on the outer component. An elastic component is connected with a center pulley. The two ropes are wrapped on the center pulley. One end of each one of the ropes is mounted on one of the fixing points that is connected to one of the magnet rings mounted on the outer component and another one end of the rope is mounted on a reactive pulley. With such structure, the outer component may levitate from the inner component and the pulley assemblies can balance the entire device.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: December 20, 2022
    Inventor: Te-Wei Liu
  • Patent number: 11527948
    Abstract: A signal processor is configured to perform a process equivalent to performing a series of fixed-to-rotating coordinate conversion, a predetermined process and then rotating-to-fixed coordinate conversion, while maintaining linearity and time-invariance. The signal processor performs a process given by the following matrix G: G = [ F ? ( s + j ? ? 0 ) + F ? ( s - j ? ? 0 ) 2 F ? ( s + j ? ? 0 ) - F ? ( s - j ? ? 0 ) 2 - F ? ( s + j ? ? 0 ) - F ? ( s - j ? ? 0 ) 2 ? j F ? ( s + j ? ? 0 ) + F ? ( s - j ? ? 0 ) 2 ] where F(s) is a transfer function representing the predetermined process, ?0 is a predetermined angular frequency and j is the imaginary unit.
    Type: Grant
    Filed: June 1, 2022
    Date of Patent: December 13, 2022
    Assignee: DAIHEN Corporation
    Inventors: Akihiro Ohori, Nobuyuki Hattori
  • Patent number: 11501903
    Abstract: The actuator comprises a movable armature swivelling with respect to a stator provided with flanges on which magnets are fitted and a coil fitted around one of the flanges. The magnets have an axial magnetisation in a z axis and are aligned in an x axis. The movable armature is arranged between the magnets in the x axis. The movable armature is mounted on a guide imposing swivelling around a y axis perpendicular to the x and z axes. The movable armature is separated from the magnets by air-gaps. Each magnet forms a static magnetic circuit with one end of the movable armature and one of the flanges. The coil forms a dynamic magnetic circuit with the ends of the movable armature and the flanges.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: November 15, 2022
    Assignee: DECRAT TECHNOLOGIES
    Inventors: Frank Claeyssen, Gérald Aigouy, Kevin Benoit