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公开(公告)号：US12116644B2
公开(公告)日：2024-10-15
申请号：US17708078
申请日：2022-03-30
申请人： Neturen Co., Ltd.
摘要： A cooling jacket includes a coolant supply member that circulates a coolant, and a coolant injection member to which the coolant is supplied from the coolant supply member, the coolant injection member provided with multiple injection holes through which the coolant is injected. The coolant injection surface of the coolant injection member opposing the workpiece has an upper region, a central region, and a lower region arranged along a vertical direction. An area of each injection hole provided in the central region is larger than an area of each injection hole provided in the upper region and an area of each injection hole provided in the lower region. The coolant injection member moves relative to a workpiece in a horizontal direction. A densest direction in which the multiple injection holes are arranged at the shortest intervals is inclined with respect to both the horizontal direction and the vertical direction.
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公开(公告)号：US11980929B2
公开(公告)日：2024-05-14
申请号：US16764251
申请日：2018-11-15
申请人： NETUREN CO., LTD.
摘要： A manufacturing method is provided for a hollow rack bar made of a hollow shaft material and including a toothed section which has a rack on an outer surface and a shaft section which is thinner than the toothed section. The manufacturing method includes: (i) drawing the hollow shaft material using a die and a plug, and preforming regions of the hollow shaft material including a toothed section formation region configured to become the toothed section and a shaft section formation region configured to become the shaft section so as to have thicknesses according to the respective regions; and (ii) forming the rack at the toothed section formation region of the hollow shaft material which is preformed.
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公开(公告)号：US11719758B2
公开(公告)日：2023-08-08
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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公开(公告)号：US20230127364A1
公开(公告)日：2023-04-27
申请号：US17974731
申请日：2022-10-27
申请人： Neturen Co., Ltd.
发明人： Takashi Horino , Hiroshi Yoshida
摘要： A cooling simulation method is a cooling simulation method for predicting a temperature change inside a heated workpiece when a coolant is brought into contact with the workpiece. In the cooling simulation method, a flow velocity of the coolant on the surface of the workpiece is calculated by a flow analysis of the coolant by a thermal fluid simulation, and the temperature change inside the workpiece is calculated based on a temperature of the surface of the workpiece and the calculated flow velocity.
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公开(公告)号：USD954648S1
公开(公告)日：2022-06-14
申请号：US29770185
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：USD953985S1
公开(公告)日：2022-06-07
申请号：US29770183
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：US20210321495A1
公开(公告)日：2021-10-14
申请号：US17270685
申请日：2019-08-21
申请人： NETUREN CO., LTD.
摘要： A heating coil includes a plurality of loop portions disposed coaxially along an axis, a first lead portion and a second lead portion which electrically connect to a power source, and a connection portion which connects the plurality of loop portions, the first lead portion, and the second lead portion in series.
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公开(公告)号：US10973090B2
公开(公告)日：2021-04-06
申请号：US15747634
申请日：2016-09-08
申请人： NETUREN CO., LTD.
发明人： Takahiko Kanai , Masato Sugimoto , Haruki Yoshida
IPC分类号： H02M7/00 , H05B6/04 , H02M7/5387
摘要： An induction heating power supply apparatus includes a smoothing section to smooth pulsating current of DC power output from a DC power supply section, and an inverter to convert the DC power smoothed by the smoothing section to AC power. The smoothing section includes a pair of bus bars connected to the inverter and a capacitor connected to the pair of bus bars. Each of the bus bars has an external surface extending in a current flow direction, the external surface including a flat face having a larger surface dimension than another face of the external surface in a direction perpendicular to the current flow direction. The bus bars are arranged in a layered manner such that the flat faces of the bus bars are opposed to each other and such that an insulator is sandwiched between the flat faces of the bus bars.
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9.发明授权公开(公告)号：US10959297B2
公开(公告)日：2021-03-23
申请号：US14380043
申请日：2013-02-27
申请人： Neturen Co., LTD.
发明人： Yoshimasa Tanaka , Yutaka Sugiyama
摘要： A heating coil of a heat treatment apparatus is configured to inductively heat an elongated workpiece having a recessed lateral surface. The heating coil includes a base conductor and a projected conductor. A width of the projected conductor is narrower than a width of the base conductor. The projected conductor is arranged to project toward the recess from a position of the base conductor. The base conductor and the projected conductor are arranged to extend in a longitudinal direction of the workpiece. A heat treatment apparatus includes a cooling section and the heating coil. A heat treatment method uses the heating coil described above.
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公开(公告)号：US10708984B2
公开(公告)日：2020-07-07
申请号：US14434443
申请日：2013-10-11
申请人： NETUREN CO., LTD.
发明人： Yoshimasa Tanaka , Yutaka Sugiyama
摘要： In preferred embodiments, a heating coil is provided that includes at least a set of heating conductors, one of which is arranged at a side of a work and the other one is arranged at an opposite side of the work. In addition, a plurality of connecting conductors are provided to connect an end of one of the heating conductors with an end of the other heating conductor, wherein each of the heating conductors is connected with at least two connecting conductors. The connecting conductors extend from an end of each of the heating conductor in a different direction from each other. In the preferred embodiments, the heating coil has a simple structure that enables an even heat treatment to a work in a width direction.
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