Patents Examined by Ahmed Elnakib
  • Patent number: 11228259
    Abstract: The present invention relates to an energy harvester, including: a base; an electromagnetic coil fixed in the base; a disk-shaped stator magnet fixed at the center of the base; a friction plate fixing ring fixed on the base; at least one friction plate unit fixed on an inner side surface of the friction plate fixing ring; a disk-shaped rotor magnet whose bottom is in contact with the electromagnetic coil, wherein the disk-shaped rotor magnet is attracted and held to the disk-shaped stator magnet, and an outer surface of the disk-shaped rotor magnet is tangent to an outer surface of the disk-shaped stator magnet; and an annular friction plate fixed on the disk-shaped rotor magnet, wherein the annular friction plate and a friction plate are made of materials with different polarities. The foregoing energy harvester has a simple structure and high electrical energy output efficiency.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: January 18, 2022
    Assignee: SOOCHOW UNIVERSITY
    Inventors: Tao Chen, Zhan Yang, Huicong Liu, Lining Sun
  • Patent number: 11226002
    Abstract: A magnetic bearing having a first bearing ring and a second bearing ring arranged concentrically in relation to the first bearing ring. The first bearing ring and the second bearing ring are mounted so as to be rotatable with respect to each other about an axis of rotation by means of electromagnets. The first bearing ring has a first magnet row and a second magnet row. The magnet rows each include electromagnets arranged at a distance from one another in a circumferential direction of the first bearing ring. The electromagnets of the magnet rows are oriented such that they can each exert a magnetic force on the second bearing ring, which magnetic force is oriented transversely to the axis of rotation and transversely to a radial plane which is arranged perpendicularly to the axis of rotation.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: January 18, 2022
    Assignees: THYSSENKRUPP ROTHE ERDE GMBH, THYSSENKRUPP AG
    Inventors: Klaus Pantke, Christopher Stenzel
  • Patent number: 11215226
    Abstract: A magnetic bearing device for magnetically suspending a rotor (22) for rotation about a rotation axis (A) comprises an amplifier device, a first main coil (p) and a second main coil (n). In order to compensate for a stray flux that is created when the main coils are supplied with currents from the amplifier device, a compensation coil (c) is connected between a common node of the main coils and the amplifier device with such polarity that a current flowing through the compensation coil will diminish the stray flux caused by the main coils (p, n).
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: January 4, 2022
    Assignee: MECOS AG
    Inventor: Philipp Bühler
  • Patent number: 11209046
    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: January 21, 2020
    Date of Patent: December 28, 2021
    Assignee: INGERSOLL-RAND INDUSTRIAL U.S., INC.
    Inventors: Esa Heikki Matias Vikman, Fredrik Boxberg, Juha T. Saari, Petri J. Mäki-Ontto, Lauri Juhani Salmia
  • Patent number: 11196325
    Abstract: A stator for an electric machine having an annular lamination stack with a longitudinal axis and slots extending along the longitudinal axis, at least three electrical phases, each of which has two partial strands, a plurality of rings connected in series to form a partial strand, a plurality of connection wires arranged to form a ring in adjacent layers of the slots, and a power connection for electrically connecting the stator. The connection wires are connected by pairs at a contacting side of the lamination stack for connecting adjacent layers at contacting areas. The power connection is arranged at the contacting side, and the connection wires are closed in each instance at an opposed contacting side opposite the contacting side.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: December 7, 2021
    Assignee: ZF Friedrichshafen AG
    Inventors: Carsten Dotzel, Stefan Reuter, André Grübel, Matthias Ebert
  • Patent number: 11196358
    Abstract: An automatic powering device includes a dielectric layer, a driving layer, a plurality of electrodes and a droplet. The dielectric layer includes a first surface and a second surface opposite to the first surface. The driving layer faces toward the dielectric layer thereby forming a channel between the driving layer and the dielectric layer. The driving layer includes a plurality of hydrophilic surfaces facing toward the first surface and a plurality of hydrophobic surfaces facing toward the first surface. Each of the hydrophilic surfaces is staggered from each of the hydrophobic surfaces. The electrodes are disposed at the second surfaces. The electrodes each are electrically connected to and spaced from each other. The droplet is flowable within the channel. The droplet is affected by the hydrophilic surfaces and the hydrophobic surfaces so as to flow in the channel.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: December 7, 2021
    Assignee: NATIONAL TSING HUA UNIVERSITY
    Inventors: Zong-Hong Lin, Da-Jeng Yao, Hsuan-Yu Lin
  • Patent number: 11187268
    Abstract: The invention relates to a magnetic bearing assembly for contactless linear displacement of a rigid body relative to another rigid body along a linear displacement path. The invention also relates to a linear guideway assembly implementing one or more such magnetic bearing assemblies.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: November 30, 2021
    Assignee: VDL Enabling Technologies Group B.V.
    Inventors: Antonius Theodorus Adrianus Peijnenburg, Rick Baade
  • Patent number: 11183909
    Abstract: The invention relates to a squirrel-cage rotor (3) of an asynchronous machine (1) having electrical conductors, which are provided in substantially axially extending grooves of a laminated core (5). On each end face of the laminated core (5), at least one short-circuit ring is provided, which electrically connects at least a predetermined number of the electrical conductors, wherein the short-circuit ring has a reinforcement (24) made of comparatively high-strength material.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: November 23, 2021
    Assignee: Siemens Aktiengesellschaft
    Inventors: Klaus Büttner, Klaus Kirchner, Matthias Warmuth
  • Patent number: 11174898
    Abstract: The present disclosure provides a wiring structure of a magnetic suspension bearing, a compressor and an air conditioner. The wiring structure of a magnetic suspension bearing, for electrically connect a control coil of the magnetic suspension bearing with an external power source, includes a circuit board; wherein the number of the magnetic suspension bearing is two or more, and the control coils of the two or more magnetic suspension bearings are all configured to electrically connect to the circuit board, and the circuit board is configured to connect to the external power source. The present disclosure has the advantages of reasonable design, simple structure, implementation of integrating wiring of multiple magnetic suspension bearings, simplification of wiring work, improvement of production efficiency, and improvement of wiring reliability.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: November 16, 2021
    Assignee: Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai
    Inventors: Xin Li, Yusheng Hu, Xiaobo Zhang, Jianning Liu, Fang Zhang, Gao Gong, Siyuan Tian, Chao Zhang, Jiuzhan Su, Ruhao Dong
  • Patent number: 11171457
    Abstract: A brush holder for slipring brushes comprises a brush mount held by a lever at a base. The lever is connected by a base pivot to the base and is pivotable in a plane orthogonal to a brush mount pivot axis and/or to a slipring rotation axis. A spring is provided between the base and the lever. The brush mount is connected to the lever by a brush mount pivot pivotable in said plane. The brush mount holds a first brush and a second brush wherein the brush mount pivot is between the first brush and the second brush.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: November 9, 2021
    Assignee: SCHLEIFRING GMBH
    Inventors: Peter Heinbuch, Christian Holzapfel, Marvin Doll, Johannes Katz
  • Patent number: 11165210
    Abstract: A slip ring includes a first dielectric carrier body and a second dielectric carrier body, each carrier body having at least one shoulder extending circumferentially along a circle line. In addition, the slip ring includes conductor elements, which have an annular and closed configuration with respect to an axis, at least one conductor element, which is fixed in place on the shoulder of the first dielectric carrier body, and at least one conductor element, which is fixed in place on the shoulder of the second dielectric carrier body. The first dielectric carrier body is arranged at an offset from the second dielectric carrier body in the direction of the axis, so that the shoulder having the at least one conductor element of the first dielectric carrier body and the shoulder having the at least one conductor element of the second dielectric carrier body are located axially across from each other.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: November 2, 2021
    Assignee: LTN Servotechnik GmbH
    Inventors: Peter Autenzeller, Andreas Strempel
  • Patent number: 11152841
    Abstract: A driving device includes a motor and a control unit for controlling of the motor. The motor includes a motor body and an end cap assembly disposed at one end of the motor body. The motor body comprises a stator, a rotor rotatable relative to the stator, and a motor shaft fixed to and rotated with the rotor. The end cap assembly is provided with two brushes. The control unit includes two connectors for connecting with an external power source. The two brushes are respectively electrically connected to the connectors through the control unit. Lengths of connecting routes of the two brushes to the corresponding connectors are substantially equal to each other.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: October 19, 2021
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Qingbin Luo, Guihong Tian, Xinpeng Wei, Binwei Li, Yueju Zhao
  • Patent number: 11137026
    Abstract: The present invention is to reduce the load on a control device by reliably classifying vibration modes of a rotor, thereby facilitating stabilization design of a magnetic bearing. The present invention includes: magnetic bearings including electromagnets provided at one end and the other end of a rotor to contactlessly support the one end and the other end of the rotor by the magnetic attraction forces of the electromagnets; and displacement sensors that measure an inclination at the one end of the rotor and an inclination at the other end of the rotor, in which the magnetic attraction forces of the electromagnets are controlled based on the inclinations measured by the displacement sensors.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: October 5, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Toyomi Yoshida, Kazuyuki Yamaguchi, Yohei Magara, Kiyoshi Yabata
  • Patent number: 11118625
    Abstract: A magnetic bearing includes a ring-shaped first magnet, a ring-shaped second magnet, a first magnetic body and a second magnetic body. The ring-shaped first magnet is magnetized in an axial direction. The ring-shaped second magnet is concentrically arranged with the first magnet and is magnetized in the axial direction. The first magnetic body is provided on a first surface in the axial direction of the second magnet. The second magnetic body is provided on a second surface parallel to the first surface in the axial direction of the second magnet. A thickness of each of the first magnetic body and the second magnetic body is less than or equal to an acceptable fluctuation amount in the axial direction of the second magnet with respect to the first magnet and greater than or equal to 0.1 mm.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: September 14, 2021
    Assignee: NIDEC COPAL ELECTRONICS CORPORATION
    Inventors: Yusuke Saito, Yuki Nakada, Kyosuke Saso
  • Patent number: 11114925
    Abstract: An electric motor may comprise a rotor and a stator comprising rotor and stator teeth, respectively. A non-uniform angular spacing or grouping of rotor teeth may facilitate desired rotational speeds of the rotor.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: September 7, 2021
    Assignee: Arm Limited
    Inventor: David Victor Pietromonaco
  • Patent number: 11114922
    Abstract: A rotor for an electric motor or generator, the rotor comprising a housing having a first surface on which a first set of magnets is mounted; and an annular clamping ring for retaining a second set of magnets to a second surface of the housing, wherein the position of the second set of magnets on the second surface allows the position of the first set of magnets to be determined, wherein the annular clamping ring includes a mounting point for allowing the annular clamping ring to be mounted to the housing for retaining the second set of magnets to the second surface, wherein the cross sectional area of the annular clamping ring is reduced in a region adjacent to the mounting point and wherein the annular clamping ring is mounted over the second set of magnets.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: September 7, 2021
    Inventor: Christopher Tims
  • Patent number: 11114955
    Abstract: Devices and methods relate to a portable self-powered wireless sensor and transmitter providing a tactile driven electric generator, using a 3D printed nano carbon and polymer electrodes. The device has two electrodes capable of producing greater than 2000 V, which when connected to a metal conductor is sufficient to create an electric field that can be used to wirelessly communicate a signal over a range of a few tens of meters. The sensor is completely self-powered and requires no motors or additional power such as active power supplies, batteries, or capacitors. The sensor generated waveform can be modulated by mechanical action such as hand tapping in a given sequence, which is preserved in the wireless signal (akin to Morse coding) and can be detected by existing compatible commercial electronic receivers. Resulting devices are suitable for security applications requiring wireless transmission of codes.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: September 7, 2021
    Assignee: Clemson University
    Inventors: Sai Sunil Kumar Mallineni, Herbert W. Behlow, Yongchang Dong, Ramakrishna Podila, Apparao M. Rao
  • Patent number: 11114924
    Abstract: Various embodiments include a squirrel-cage rotor for an asynchronous machine comprising: a first shaft journal; a second shaft journal; a laminated rotor core; and a filler body cast onto the laminated rotor core connecting the filler body and the laminated rotor core in a rotationally fixed manner. The filler body is connected to the shaft journals in a rotationally fixed manner and a torque applied to the shaft journals is transmitted to the laminated rotor core.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: September 7, 2021
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventors: Holger Fröhlich, Isao Fukumoto
  • Patent number: 11101745
    Abstract: An actuator is configured to include a first substrate that has a first conductive surface, which may be or include a first conductive electrode layer. The actuator also includes a second substrate that has a second conductive surface, which may be or include a second conductive electrode layer. The first and second conductive surfaces face toward each other across a compression space between the first and second substrates. A group of elastic support nodules span the compression space and separate the first and second conductive surfaces. The compression space is less than fully filled with solid elastic material and is configured to be compressed by relative movement of the first and second conductive surfaces toward each other in response to a voltage difference between the first and second conductive surfaces.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: August 24, 2021
    Assignee: Pix Art Imaging Inc.
    Inventors: Ville Mäkinen, Roberto Tejera-Garcia, Aki Salminen
  • Patent number: 11094603
    Abstract: A power semiconductor device includes a planar rectifying element, a base electrode, a first solder layer, a lead electrode, a second solder layer, and first and second sealing portions. The base electrode is electrically connected to the rectifying element via the first solder layer formed on a first surface of the rectifying element. The lead electrode is electrically connected to the rectifying element via the second solder layer formed on a second surface of the rectifying element. The first sealing portion is formed of a first resin and provided in a recess; the recess is formed by the first surface of the rectifying element and the first solder layer or by the second surface of the rectifying element and the second solder layer. The second sealing portion is formed of a second resin and separately from the first sealing portion to cover an outer surface of the first sealing portion.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: August 17, 2021
    Assignee: DENSO CORPORATION
    Inventor: Shou Hasegawa