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公开(公告)号：US20050168307A1
公开(公告)日：2005-08-04
申请号：US10772008
申请日：2004-02-04
申请人： Michael Reynolds , William Goodwin
发明人： Michael Reynolds , William Goodwin
CPC分类号： H01F7/0236 , F16F6/00 , F16F15/03 , H01F7/122 , H01F7/1615 , H02K33/16
摘要： A magnetic force generator includes a magnetic shell internally defining an armature chamber. At least three circumferential electric coils are spaced axially within the chamber. An armature supported in the chamber for reciprocation therein includes a plurality of aligned magnets separated by at least one intermediate magnetic steel plate sandwiched between like poles of adjoining magnets and a pair of end steel magnetic plates on opposite ends of the armature. The plates extend laterally to a periphery of the armature in general lateral alignment with the electric coils. Springs nominally center the armature between non-magnetic ends of the chamber. Controlled energizing of the coils reciprocates the armature axially relative to the shell to develop an opposite inertia force on the shell for application to a connected body. The use of multiple magnets improves performance and/or reduces cost compared to a single magnet of comparable size.
摘要翻译： 磁力发生器包括内部限定电枢室的磁性壳体。 至少三个圆周电线圈在腔室内轴向隔开。 支撑在腔室中用于往复运动的电枢包括多个对准的磁体，该多个对准的磁体由夹在相邻磁体的相似磁极之间的至少一个中间磁钢板和在电枢的相对端上的一对端钢磁性板分隔开。 这些板横向延伸到电枢的周边，与电线圈一般侧向对准。 弹簧名义上使电枢在腔室的非磁性端之间居中。 线圈的受控通电使电枢相对于壳体轴向地往复运动，以在壳体上产生相反的惯性力，以施加到连接体。 与相当尺寸的单个磁体相比，使用多个磁体提高了性能和/或降低了成本。
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公开(公告)号：US20030006871A1
公开(公告)日：2003-01-09
申请号：US09896583
申请日：2001-06-29
发明人： Richard Freeman Post
IPC分类号： H01F007/02 , E01B001/00
CPC分类号： H01F7/0236 , B60L13/04 , B60L2200/26
摘要： A magnet configuration comprising a pair of Halbach arrays magnetically and structurally connected together are positioned with respect to each other so that a first component of their fields substantially cancels at a first plane between them, and a second component of their fields substantially adds at this first plane. A track of windings is located between the pair of Halbach arrays and a propulsion mechanism is provided for moving the pair of Halbach arrays along the track. When the pair of Halbach arrays move along the track and the track is not located at the first plane, a current is induced in the windings and a restoring force is exerted on the pair of Halbach arrays.
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公开(公告)号：US20030005849A1
公开(公告)日：2003-01-09
申请号：US10185439
申请日：2002-06-26
发明人： Richard Freeman Post
IPC分类号： E01B001/00
CPC分类号： B60L13/04 , B60L2200/26 , H01F7/0236
摘要： A magnet configuration comprising a pair of Halbach arrays magnetically and structurally connected together are positioned with respect to each other so that a first component of their fields substantially cancels at a first plane between them, and a second component of their fields substantially adds at this first plane. A track of windings is located between the pair of Halbach arrays and a propulsion mechanism is provided for moving the pair of Halbach arrays along the track. When the pair of Halbach arrays move along the track and the track is not located at the first plane, a current is induced in the windings and a restoring force is exerted on the pair of Halbach arrays.
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公开(公告)号：US20240296983A1
公开(公告)日：2024-09-05
申请号：US18525283
申请日：2023-11-30
申请人： Aspect Imaging Ltd.
发明人： Uri RAPOPORT , Yoram COHEN , Yair GOLDFARB
IPC分类号： H01F7/02
CPC分类号： H01F7/0278 , H01F7/02 , H01F7/0205 , H01F7/021 , H01F7/0221 , H01F7/0226 , H01F7/0231 , H01F7/0242 , H01F7/0215 , H01F7/0236
摘要： Generally, a system for generating a magnetic field having a desired magnetic field strength and/or a desired magnetic field direction is provided. The system can include a plurality of magnetic segments and/or a plurality of ferromagnetic segments. Each magnetic segment can be positioned adjacent to at least one of the plurality of magnetic segments. Each ferromagnetic segment can be positioned adjacent to at least one of the plurality of magnetic segments. In various embodiments, a size, shape, positioning and/or number of magnetic segments and/or ferromagnetic segments in the system, as well as a magnetization direction of the magnetic segments can be predetermined based on, for example, predetermined parameters of the system (e.g., a desired magnetic field strength, direction and/or uniformity of the magnetic field, a desired elimination of a magnetic fringe field and/or total weight of the system) and/or based on a desired application of the system (e.g., performing a magnetic resonance imaging of at least a portion of a patient and/or performing a magnetic resonance spectroscopy of a sample).
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公开(公告)号：US20180247748A1
公开(公告)日：2018-08-30
申请号：US15964819
申请日：2018-04-27
发明人： Oki Gunawan
CPC分类号： H01F7/0236 , H01J49/00 , H02N15/00
摘要： Techniques for tuning magnetic potential using a variable gap in a parallel dipole line (PDL) trap are provided. In one aspect, a PDL trap is provided. The PDL trap includes: a pair of dipole line magnets separated from one another by a variable gap g; and a diamagnetic object levitating above the dipole line magnets. The dipole line magnets can be separated from one another by at least one spacer, or a variable gap fixture can be used in which the dipole line magnets are affixed to separate mounts for varying the gap g between the dipole line magnets. A bigger trap or track can be built with multiple segments of PDL trap. A method of operating a PDL trap is also provided.
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公开(公告)号：US20180190418A1
公开(公告)日：2018-07-05
申请号：US15846988
申请日：2017-12-19
申请人： Amber Kinetics, Inc.
发明人： Seth Robert Sanders
IPC分类号： H01F7/20 , F16C19/52 , F16C19/54 , H02K7/02 , F16C39/06 , F16C32/04 , F16C19/16 , H01F7/02 , H02K7/09
CPC分类号： H01F7/206 , F16C19/163 , F16C19/522 , F16C19/547 , F16C32/0406 , F16C32/044 , F16C32/0444 , F16C32/0451 , F16C32/0459 , F16C39/06 , F16C2361/55 , H01F7/0236 , H02K7/02 , H02K7/025 , H02K7/09
摘要： An apparatus and method for unloading a rotor bearing is described. The apparatus includes an electromagnet for levitating the rotor. In one embodiment, a sensor of the magnetic field near the electromagnet is used to control the current to levitate the rotor. In another embodiment, a method is provided that includes rotating the rotor, increasing the current to levitate the rotor and decrease the gap between electromagnet and rotor, and then reducing the current to levitate the rotor with a minimal amount of electric power to the electromagnet.
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公开(公告)号：US09892839B2
公开(公告)日：2018-02-13
申请号：US13973937
申请日：2013-08-22
申请人： Amber Kinetics, Inc.
发明人： Seth Robert Sanders
IPC分类号： H02K7/02 , H02K7/09 , F16C32/04 , F16C39/06 , H01F7/20 , F16C19/52 , F16C19/54 , H01F7/02 , F16C19/16
CPC分类号： H01F7/206 , F16C19/163 , F16C19/522 , F16C19/547 , F16C32/0406 , F16C32/044 , F16C32/0444 , F16C32/0451 , F16C32/0459 , F16C39/06 , F16C2361/55 , H01F7/0236 , H02K7/02 , H02K7/025 , H02K7/09
摘要： An apparatus and method for unloading a rotor bearing is described. The apparatus includes an electromagnet for levitating the rotor. In one embodiment, a sensor of the magnetic field near the electromagnet is used to control the current to levitate the rotor. In another embodiment, a method is provided that includes rotating the rotor, increasing the current to levitate the rotor and decrease the gap between electromagnet and rotor, and then reducing the current to levitate the rotor with a minimal amount of electric power to the electromagnet.
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公开(公告)号：US09758235B2
公开(公告)日：2017-09-12
申请号：US14881337
申请日：2015-10-13
申请人： The Boeing Company
CPC分类号： B64C1/38 , B64C30/00 , F41H3/00 , H01F7/0236 , H01F7/0273 , H01F7/064 , H02N15/00
摘要： A thermal insulation system for an aircraft that includes leading surfaces is provided. The thermal insulation system includes a carrier and a container. The carrier has an interior surface that includes a first plurality of magnets that generate a first magnetic field, and an exterior surface that is thermally coupled to the leading surfaces of the aircraft. The container is surrounded by the interior surface of the carrier, has an exterior surface including a second plurality of magnets that generate a second magnetic field oriented opposite the first magnetic field, and has an interior that includes electronics. The first magnetic field and the second magnetic field generate a gap between the carrier and the container to reduce a heat transfer from the leading surfaces to the electronics during operation of the aircraft.
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公开(公告)号：US09721710B2
公开(公告)日：2017-08-01
申请号：US14455134
申请日：2014-08-08
CPC分类号： H01F7/0236 , F16C32/0427 , F16C39/063 , F16C2240/12 , F16C2360/00 , F16C2360/23
摘要： The present invention generally relates to an apparatus and method for axially supporting a shaft. In one aspect, a magnetic suspension system for supporting a shaft in a housing is provided. The magnetic suspension system includes an array of magnet members disposed between the shaft and the housing. The array of magnet members comprising a first magnet member, a second magnet member, and a third magnet member, wherein the first magnet member and the second magnet member generate a first force that is substantially parallel to a longitudinal axis of the shaft and the second magnet member and the third magnet member generate a second force that is substantially parallel with the longitudinal axis of the shaft The first force and the second force are configured to position the shaft axially within the housing. In another aspect, a method of supporting a shaft along a longitudinal axis of a housing is provided. In a further aspect, a suspension system for supporting a shaft in a housing is provided.
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公开(公告)号：US20170178846A1
公开(公告)日：2017-06-22
申请号：US14974748
申请日：2015-12-18
CPC分类号： H01H36/0073 , B60R21/01528 , B60R21/20 , B60R21/203 , B60R21/2037 , H01F7/0236 , H01H9/06 , H01H11/00 , H01H13/52
摘要： An actuation apparatus includes a module movably tethered to a base member. Each of the module and base member include a plurality of magnetic elements aligned in a plurality of paired magnet sets such that in a non-actuated condition a repulsive magnetic force generated by each paired magnet set causes separation of the module and base member. Application of an actuation force to an actuation surface of the module, in opposition to the magnetic repulsive force, causes movement of the module toward the base member such that contact is made between terminals defined by the magnetic elements of at least one of the paired magnet sets, to generate an output signal. In an illustrative example, the base member is a steering wheel armature of a vehicle and the module is a wheel hub assembly including an air bag and a hub cover defining the actuation surface.
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