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公开(公告)号：US20170278608A1
公开(公告)日：2017-09-28
申请号：US15505839
申请日：2015-03-27
Applicant: HITACHI, LTD.
Inventor： Toshiaki KUSUNOKI , Hideki TANAKA , Motomune KODAMA , Hiroyuki YAMAMOTO
CPC classification number: H01F6/06 , H01F6/006 , Y10S505/882
Abstract: Provided is a high-performance persistent current switch that is provided with a superconducting coil in which a decrease of a critical current or a critical magnetic field is suppressed. A means for solving the problem is as follows. A persistent current switch provided with a superconducting coil in a switch unit. A superconducting coil 5 includes a winding portion 53 which is formed using a superconductor thin film formed on an outer circumferential face of a base member 50. The winding portion 53 includes a first winding portion 51 and a second winding portion 52 which are formed in a double helical shape to be parallel to each other. A terminating end portion 51b of the first winding portion 51 and a starting end portion 52a of the second winding portion 52, which are adjacent to each other, are connected to each other.
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Patent Agency Ranking
公开(公告)号：US20160202330A1
公开(公告)日：2016-07-14
申请号：US14911695
申请日：2013-09-09
Applicant: HITACHI, LTD.
Inventor： Hiroyuki YAMAMOTO , Akihiko KANDORI , Katsuya MIURA
CPC classification number: H01F10/3286 , G01R33/093 , G01R33/098 , H01L43/08
Abstract: Provided is a magnetic sensor device having a structure in which a plurality of MTJ structures, each using a ferromagnetic layer having an in-plane axis of easy magnetization and a ferromagnetic layer having a perpendicular axis of easy magnetization, are laminated. By a single device, magnetic fields in two or more directions can be sensed, or a plurality of magnetic field ranges including a small magnetic field and a relatively large magnetic field can be sensed.
Abstract translation: 提供了一种磁传感器装置，其结构是将多个MTJ结构层叠在一起，每个MTJ结构使用具有容易磁化的面内轴的铁磁层和具有易磁化的垂直轴的铁磁层。 通过单个装置，可以检测两个或更多个方向的磁场，或者可以感测到包括小磁场和相对大的磁场的多个磁场范围。
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3.发明申请公开(公告)号：US20160172158A1
公开(公告)日：2016-06-16
申请号：US14890258
申请日：2013-05-14
Applicant: Hitachi, Ltd.
Inventor： Noriyuki LEE , Hiroyuki YAMAMOTO , Akira SUGAWARA
IPC: H01J37/305
CPC classification number: H01J37/3056 , H01J37/317 , H01J2237/0262 , H01J2237/045 , H01J2237/12 , H01J2237/151 , H01J2237/206 , H01J2237/31745 , H01J2237/31749
Abstract: To realize a focused-ion-beam machining apparatus capable of machining a thin sample with a wide area and a uniform film thickness and a needle-like sample with a sharp tip, in a focused-ion-beam machining apparatus including: an ion source (1); an electronic lens (3) focusing an ion beam extracted from the ion source (1) and irradiating the ion beam to a sample (5); and a sample holder (13) holding the sample (5), the sample holder (13) is provided with a shield electrode (7) arranged in a manner such as to cover the sample (5), and the sample (5) and the shield electrode (7) are insulated from each other in a manner such that voltages can be applied to them separately from each other.
Abstract translation: 为了实现聚焦离子束加工装置，该聚焦离子束加工装置能够在聚焦离子束加工装置中对具有广泛面积和均匀薄膜厚度的薄样品进行加工的针状样品和具有尖尖的针状样品进行加工，所述聚焦离子束加工装置包括：离子源 （1）; 聚焦从离子源（1）提取的离子束并将离子束照射到样品（5）的电子透镜（3）; 和保持样品（5）的样品架（13），样品保持器（13）设置有以覆盖样品（5）的方式配置的屏蔽电极（7）和样品（5）和 屏蔽电极（7）以能够彼此分开施加电压的方式彼此绝缘。
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公开(公告)号：US20240426947A1
公开(公告)日：2024-12-26
申请号：US18698581
申请日：2021-10-07
Applicant: Hitachi, Ltd.
Inventor： Yuki SAITO , Akira IWAMOTO , Hiroki MATSUURA , Hiroyuki YAMAMOTO
Abstract: Provided is a failure detection device for an electric actuator for an emergency stop device that can improve maintainability of an electric device portion. The failure detection device for the electric actuator for the emergency stop device detects a failure of the electric actuator (10). The electric actuator actuates a drive mechanism that drives the elevator emergency stop device, and includes a movable element (a, 34b, 34c) mechanically connected to the drive mechanism and a first electromagnet (35a) and a second electromagnet (35b) facing the movable element. The failure detection device includes: a position detector (109) configured to detect a position of the movable element; and a controller (103) configured to detect a failure of the electric actuator based on a position detection signal from the position detector. The controller issues a command to cut off energization of the first electromagnet during standby of the electric actuator, and then detects a failure of the second electromagnet based on the position detection signal.
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5.发明公开公开(公告)号：US20240327167A1
公开(公告)日：2024-10-03
申请号：US18697592
申请日：2021-10-07
Applicant: Hitachi, Ltd.
Inventor： Yuki SAITO , Yasushi ITO , Yosuke KUBO , Akira IWAMOTO , Hiroki MATSUURA , Hiroyuki YAMAMOTO
IPC: B66B5/00
CPC classification number: B66B5/0093 , B66B5/0031
Abstract: Provided is an operation confirmation device for an electric actuator for an emergency stop device that can improve maintainability of an electric device portion. The operation confirmation device for the electric actuator for the emergency stop device confirms operation of an electric actuator (10). The electric actuator actuates a drive mechanism that drives the elevator emergency stop device, and includes a movable element (34a, 34b, 34c) mechanically connected to the drive mechanism, an electromagnet (35a, 35b) facing the movable element, and a mechanism portion (36, 41) configured to convert rotation of a motor (37) into linear movement of the electromagnet. The operation confirmation device includes: a position detector (109) configured to detect a position of the movable element; and a controller (7) configured to detect a failure of the motor based on a position detection signal from the position detector. The controller issues a command to rotate the motor during standby of the electric actuator, and then detects the failure of the motor based on the position detection signal.
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公开(公告)号：US20180069165A1
公开(公告)日：2018-03-08
申请号：US15551642
申请日：2015-02-20
Applicant: HITACHI, LTD.
Inventor： Ryoko SUGANO , Toshiaki KUSUNOKI , Hiroyuki YAMAMOTO
CPC classification number: H01L39/2487 , H01L39/141 , H01L39/143 , H01L39/2461
Abstract: A method of manufacturing an MgB2 thin film wire having an optimum average grain size is done by providing an optimum average grain size range to increase a pinning force and improve Jc with respect to the MgB2 thin film wire. In this method, the MgB2 thin film wire is made of an aggregate of MgB2 grains having a columnar structure which alignment is controlled to be in a direction perpendicular to a surface, a ratio of MgB2 to a total volume of the thin film wire is 90% or more, an average grain size of the grains is 30 nm or more and 200 nm or less by forming the MgB2 thin film having a film thickness of 1000 nm or more and 10000 nm or less in the lateral direction, and the average grain size of the grains is 40 nm or more and 100 nm or less.
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