公开(公告)号：US20240319303A1

公开(公告)日：2024-09-26

申请号：US18605413

申请日：2024-03-14

申请人： Bruker France S.A.S.

发明人： Lukas HÄNICHEN ,  Sebastian BREHAM ,  Pierre GERMAIN

IPC分类号： G01R33/385 ,  G01R33/00 ,  G01R33/3875

CPC分类号： G01R33/3856 ,  G01R33/0052 ,  G01R33/0076 ,  G01R33/3858 ,  G01R33/3875

摘要： A combined gradient coil and shim coil assembly for use in MR-devices, comprising a cylindric carrier tube, a gradient coil system arranged concentrically onto the carrier tube, a cooling tube assembly positioned around the gradient coils, and an active shim coil system, is characterized in that the active shim coil system is constructed on a flexible printed circuit board, and the assembly further comprises a sealing compound with a fluid reaction resin augmented with a heat conductive filler enclosing the components of the assembly to form a cylindrical tube and filling the cavities of the gradient and the shim coil systems and between the coils and the carrier tube. Such a combined gradient and shim coil assembly is particularly compact having an efficient cooling system allowing a precise positioning of the coils and a time-saving manufacturing.

公开(公告)号：US20240264252A1

公开(公告)日：2024-08-08

申请号：US18434778

申请日：2024-02-06

申请人： SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

发明人： Tuota XING ,  Feichao FU ,  Haoshan ZHU ,  Kangkang SHA

IPC分类号： G01R33/28 ,  G01R33/00

CPC分类号： G01R33/288 ,  G01R33/0047 ,  G01R33/0076

摘要： Embodiments of the present disclosure disclose an examination room shield, comprising: a peripherally closed shield side wall, and a sub-shield assembly disposed in an inner space enclosed by the shield side wall, the sub-shield assembly including a peripherally closed sub-shield side wall.

公开(公告)号：US20240219487A1

公开(公告)日：2024-07-04

申请号：US18392424

申请日：2023-12-21

申请人： Melexis Technologies SA

发明人： Guido DUPONT ,  Daniel ROSENFELD ,  Lionel TOMBEZ ,  Bruno BRAJON ,  Appo VAN DER WIEL,

IPC分类号： G01R33/06 ,  G01R33/00 ,  G01R33/07

CPC分类号： G01R33/063 ,  G01R33/0052 ,  G01R33/0076 ,  G01R33/072

摘要： A sensor device including a semiconductor substrate having an excitation circuit and a sensing circuit for measuring a magneto-impedance effect of a soft-magnetic component arranged on top of the semiconductor substrate. The soft-magnetic component is operatively connected to the excitation circuit and the sensing circuit, and is electrically connected to at least one of the excitation circuit and the sensing circuit by means of back contacts or side contacts. The soft-magnetic component has an elongated shape or an elongated portion extending in a first direction parallel to the semiconductor substrate; a processing circuit connected to the sensing circuit, and configured for providing a signal indicative of the measured impedance or a value derived therefrom. A method is provided for producing such a semiconductor substrate.

公开(公告)号：US11747368B2

公开(公告)日：2023-09-05

申请号：US17663624

申请日：2022-05-16

申请人： CMR SURGICAL LIMITED

发明人： Paul Christopher Roberts ,  Edward John Mottram

IPC分类号： G01R15/20 ,  H02P6/28 ,  G01R19/32 ,  G01R33/00 ,  G01R35/00

CPC分类号： G01R15/202 ,  G01R19/32 ,  G01R33/0005 ,  G01R33/0076 ,  G01R33/0082 ,  G01R35/00 ,  H02P6/28

摘要： A circuit for sensing the driving current of a motor, the circuit comprising: a driver configured to generate a driving current for each phase of a multiple-phase motor, the instantaneous sum of all the driving currents being zero; a current sensor for each phase of the multiple-phase motor, each current sensor configured to measure the driving current of that phase and comprising a plurality of current sensor elements arranged with respect to each other such that each current sensor element has the same magnitude of driving current systematic error due to magnetic fields external to the driving current to be measured; and a controller configured to, for each phase of the multiple-phase motor, generate an estimate of the driving current of that phase to be the measured driving current of that phase minus 1/n of the total of the measured driving currents for all phases, n being the number of phases of the multiple-phase motor.

公开(公告)号：US09913414B2

公开(公告)日：2018-03-06

申请号：US14846498

申请日：2015-09-04

申请人： The United States of America as represented by the Administrator of the National Aeronautics and Space Administration

发明人： John E. Sadleir

IPC分类号： H05K9/00 ,  G01R33/00 ,  G01R33/025

CPC分类号： H05K9/0077 ,  G01R33/0076 ,  G01R33/025

摘要： The present invention relates to a method and apparatus of protecting magnetically sensitive devices with a shield, including: a non-superconducting metal or lower transition temperature (Tc) material compared to a higher transition temperature material, disposed in a magnetic field; means for creating a spatially varying order parameter's |Ψ(r,T)|2 in a non-superconducting metal or a lower transition temperature material; wherein a spatially varying order parameter is created by a proximity effect, such that the non-superconducting metal or the lower transition temperature material becomes superconductive as a temperature is lowered, creating a flux-free Meissner state at a center thereof, in order to sweep magnetic flux lines to the periphery.

公开(公告)号：US20180061820A1

公开(公告)日：2018-03-01

申请号：US15245689

申请日：2016-08-24

申请人： Allegro MicroSystems, LLC

发明人： Maxim Klebanov ,  Washington Lamar ,  William P. Taylor

IPC分类号： H01L27/02 ,  H01L43/02 ,  H01L43/12 ,  G01R33/00

CPC分类号： G01R33/0076 ,  H01L23/60 ,  H01L43/02 ,  H01L43/12

摘要： An apparatus includes a package, a plurality of external connections extending outside the package, and a first die having a first electrical contact coupled to a first connection of the plurality of external connections. The apparatus also includes a second die having a second electrical contact coupled to a second connection of the plurality of external connections. A conductor is electrically coupled between the first contact and the second contact to allow electrostatic discharge current to flow between the first die to the second die.

公开(公告)号：US20180010927A1

公开(公告)日：2018-01-11

申请号：US15546009

申请日：2015-12-09

申请人： FRABA B.V.

发明人： MARTIN FORTHAUS

IPC分类号： G01D5/14

CPC分类号： G01D5/145 ,  G01R33/0017 ,  G01R33/0076 ,  G01R33/038 ,  H02K11/215

摘要： A magnet-based angular displacement measuring system for detecting a rotational movement of a driveshaft. The magnet-based angular displacement measuring system includes the driveshaft which includes an axial first shaft end region. The axial first shaft end region includes a magnetically non-conductive material. An exciter unit is rotationally coupled to the axial first shaft end region of the driveshaft. A stationary sensor unit functionally cooperates with the exciter unit to detect a rotational movement of the driveshaft.

公开(公告)号：US20180005652A1

公开(公告)日：2018-01-04

申请号：US15709359

申请日：2017-09-19

申请人： Western Digital Technologies, Inc.

发明人： Norihiro Okawa ,  Koujiro Komagaki ,  Takahiro Ibusuki

IPC分类号： G11B5/39 ,  G11B5/127

CPC分类号： G11B5/3912 ,  G01R33/0011 ,  G01R33/0017 ,  G01R33/0076 ,  G01R33/09 ,  G11B5/3932 ,  G11B5/3954 ,  G11B5/398

摘要： A magnetic read head is provided, comprising a bottom magnetic shield, a first free magnetic layer, a second free magnetic layer, and a top magnetic shield, arranged from bottom to top in this order in a stacking direction from a leading side to a trailing side of the read head. A non-soft bias layer is positioned below the top magnetic shield and on a back side of the first and the second free magnetic layers. The top magnetic shield has a unidirectional anisotropy, the magnetic moments of the top and the bottom magnetic shields are canted relative to a plane of the first and the second free magnetic layers, and the top and the bottom magnetic shields are decoupled from the non-soft bias layer and not magnetically coupled to a soft bias layer.

公开(公告)号：US20170179377A1

公开(公告)日：2017-06-22

申请号：US15447320

申请日：2017-03-02

申请人： Allegro MicroSystems, LLC

发明人： Shaun D. Milano ,  Michael C. Doogue ,  William P. Taylor

IPC分类号： H01L43/04 ,  H01L43/14 ,  H01L43/08 ,  H01L43/12 ,  H01L43/02 ,  H01L43/06

CPC分类号： H01L43/04 ,  G01R33/0029 ,  G01R33/0052 ,  G01R33/0076 ,  G01R33/07 ,  G01R33/09 ,  H01L23/3107 ,  H01L23/3142 ,  H01L23/49503 ,  H01L23/49506 ,  H01L23/49541 ,  H01L23/49575 ,  H01L24/17 ,  H01L43/02 ,  H01L43/06 ,  H01L43/065 ,  H01L43/08 ,  H01L43/12 ,  H01L43/14 ,  H01L2224/16 ,  H01L2224/16245 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2224/4826 ,  H01L2224/49171 ,  H01L2224/73204 ,  H01L2224/73265 ,  H01L2924/15311 ,  H01L2924/15747 ,  H01L2924/181 ,  H01L2924/30107 ,  H01L2924/3025 ,  H01L2924/00014 ,  H01L2924/00

摘要： Methods for providing a sensor integrated circuit package including employing a conductive leadframe and forming a non-conductive die paddle in relation to the leadframe. The method can further include placing a die on the non-conductive die paddle to form an assembly, forming at least one electrical connection between the die and the leadframe, and overmolding the assembly to form an integrated circuit package.

公开(公告)号：US20170176557A1

公开(公告)日：2017-06-22

申请号：US15452916

申请日：2017-03-08

申请人： Aspect Imaging Ltd.

发明人： Shmuel AZULAY ,  Uri RAPOPORT

IPC分类号： G01R33/422 ,  A61B5/00 ,  G01R33/48

CPC分类号： G01R33/422 ,  A61B5/0046 ,  A61B5/055 ,  A61B2505/01 ,  A61B2562/182 ,  G01R33/0052 ,  G01R33/0076 ,  G01R33/48

摘要： A radiofrequency (RF) shielding conduits that can be embedded within a doorframe and/or a door of a magnetic resonance imaging (MRI) room are disclosed. The RF shielding conduits can form, upon closing of door onto the doorframe, an RF shielding channel to enclose and/or allow passage of tubing of medical equipment extending from an interior of the MRI room to an environment that is external to the MRI room, while providing a RF shielding of the MRI room.