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公开(公告)号：US12011775B2
公开(公告)日：2024-06-18
申请号：US17903168
申请日：2022-09-06
申请人： Neturen Co., Ltd.
IPC分类号： B23K20/00 , B23K20/02 , B23K20/22 , B23K103/04
CPC分类号： B23K20/026 , B23K20/00 , B23K20/22 , B23K2103/04
摘要： A steel joined body includes a plurality of steels joined together, the plurality of steels including a joint interface having a carbon concentration of 0.20 mass % or more and 2.10 mass % or less, and the steel joined body including a concentration gradient layer having a carbon concentration decreasing with distance from the joint interface.
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2.发明公开公开(公告)号：US20230345588A1
公开(公告)日：2023-10-26
申请号：US18211332
申请日：2023-06-19
申请人： NETUREN CO., LTD.
发明人： Hitoshi Nakatsu , Masato Yoshioka , Yoshimasa Tanaka , Tsutomu Ito , Kenji Koyanagi , Masaki Sagae , Tatsuya Ishii , Yoshitaka Misaka , Yasuharu Ogawa
摘要： An induction heating device is provided. The induction heating device comprises a plurality of induction heating devices disposed at intervals along the circumference of a ring-shaped workpiece, a setting unit for setting induction heating conditions, and a switching control unit. Each of the plurality of induction heating devices comprises heating coils disposed facing areas to be heated of the workpiece, a plurality of transformers connected to the heating coils in parallel, a plurality of matching units connected to any one of the plurality of transformers, an inverter unit having a rectifier unit and an inverter unit, an inverter control unit having a rectification control unit, and a group of switches.
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公开(公告)号：US20230241690A1
公开(公告)日：2023-08-03
申请号：US17954003
申请日：2022-09-27
申请人： Neturen Co., Ltd.
发明人： Ryosuke Suzuki , Norimasa Sunaga , Daiki Sakamoto
摘要： A machining apparatus includes: a support mechanism that supports a workpiece; a cutting mechanism that cuts the workpiece that has been supported by the support mechanism; and a heat treatment mechanism that performs heat treatment on the workpiece that has been supported by the support mechanism. The heat treatment mechanism includes a coil that performs induction heating on the workpiece. The coil and the workpiece that has been supported by the support mechanism are movable relative to each other.
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公开(公告)号：USD953986S1
公开(公告)日：2022-06-07
申请号：US29770184
申请日：2021-02-10
申请人： Neturen Co., Ltd.
设计人： Hiroki Inoue , Takashi Horino
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公开(公告)号：US11291086B2
公开(公告)日：2022-03-29
申请号：US15323520
申请日：2015-07-09
申请人： NETUREN CO., LTD.
摘要： A heating apparatus and a heating method are provided. The heating apparatus includes a coil configured to receive AC power to form a magnetic field that inductively heats a workpiece, a spray unit configured to spray cooling fluid including a liquid to the coil in a form of mist at least during a period in which the AC power is supplied to the coil. Alternatively, the spray unit may be configured to spray the cooling fluid in the form of mist to a heating target portion of the workpiece placed in the magnetic field at least during the period in which the AC power is supplied to the coil.
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公开(公告)号：US11247263B2
公开(公告)日：2022-02-15
申请号：US16477615
申请日：2018-03-14
申请人： NETUREN CO., LTD.
发明人： Akihiro Goto
摘要： A method for manufacturing a rack bar having a first rack and a second rack is provided. The first and second racks have an angular positional difference around an axis of the rack bar. The method includes forming a first flat surface and a second flat surface on an outer circumference of a single hollow shaft member, with the angular positional difference being provided between the first and second flat surfaces, and forming the first rack on the first flat surface and the second rack on the second rack surface by press-fitting one or more mandrels into the hollow shaft member in a state in which one or more teeth dies corresponding to the first rack and the second rack is pressed against the first flat surface and the second flat surface.
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公开(公告)号：US20210197243A1
公开(公告)日：2021-07-01
申请号：US17130967
申请日：2020-12-22
申请人： Neturen Co., Ltd.
发明人： Toshifumi UEMOTO
摘要： A rotary body including a drum and a wire support member winds a wire by rotation. A spacer is provided on the rotary body and is displaceable to a first position and a second position in the rotary body. When the spacer is in the first position, the wire is wound on the rotary body not via the spacer, and hence the wire is wound with the first diameter. When the spacer is in the second position, position, the wire is wound on the rotary body via the spacer, and hence the wire is wound with a second diameter larger than the first diameter.
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公开(公告)号：US20200343806A1
公开(公告)日：2020-10-29
申请号：US16767933
申请日：2018-09-18
申请人： NETUREN CO., LTD.
发明人： Takahiko KANAI
摘要： A load abnormality detecting circuit for an inverter to detect abnormality of a load during an operation of the inverter which has a switching element and a phase synchronizing loop controlling an output frequency to be a resonance frequency of the load, the load abnormality detecting circuit includes a phase shift detection part that detects a phase shift between an output voltage and an output current which are applied from the inverter to the load and sends an abnormal load signal based on the detected phase shift. The switching element including a self-arc-extinguishing element and a reflux diode connected in reversely parallel to the self-arc-extinguishing element. The phase shift detection part detects advance and delay of a phase of the output current with respect to the output voltage.
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公开(公告)号：US20200284847A1
公开(公告)日：2020-09-10
申请号：US16758147
申请日：2018-08-23
申请人： NETUREN CO., LTD.
发明人： Takahiko KANAI , Yue YANG
摘要： A load abnormality detecting circuit for an inverter to detect abnormality of a load during an operation of the inverter which has a self-arc-extinguishing element as a switching element and a phase synchronizing loop controlling an output frequency to be a resonance frequency of the load, the load abnormality detecting circuit includes a phase shift detection part that detects a phase shift between a gate voltage signal controlling ON/OFF of the self-arc-extinguishing element and an output current of the inverter which is applied to the load, and that sends a first abnormal load signal based on the phase shift.
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10.发明申请公开(公告)号：US20200284334A1
公开(公告)日：2020-09-10
申请号：US16648923
申请日：2018-10-17
申请人： NETUREN CO., LTD.
发明人： Takashi YAMAWAKI , Kenichi AOKI
摘要： A rack bar blank material includes a rack portion configured to mesh with a pinion in an end side of a hollow shaft material in an axial direction, and an end portion which is provided closer to the end side of the hollow shaft material than the rack portion. The end portion has a diameter which is larger than that of a minimum circle embracing a section of the rack portion which is perpendicular to the axial direction and which is equal to that of a shaft portion at the other end side of the shaft material in the axial direction.
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