Patents by Inventor Hisato Amano
Hisato Amano has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230085682Abstract: A device may include a coil unit assembly that includes a first, second, and third coil unit annularly arranged. Further, may include a busbar provided on an outer peripheral surface of the coil unit assembly, wherein when a direction in which an axis of the stator extends is defined as an axial direction, a direction which is orthogonal to the axial direction and in which outer peripheral surface and inner peripheral surface of the stator face each other is a radial direction, and a direction along an outer periphery of the stator when viewed from the axial direction is a circumferential direction, wherein the coil units each include a split core that includes a tooth that extends in the radial direction, an insulator mounted to overlap at least the tooth of the split core, and a coil that includes a winding wound around the tooth of the split core with the insulator interposed therebetween.Type: ApplicationFiled: November 25, 2022Publication date: March 23, 2023Inventors: Hisato AMANO, Mitsutoshi NATSUMEDA, Eiji SAKAGUCHI, Takashi SAKURADA, Takahiro SATO, Masashi UNO
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Patent number: 11438680Abstract: A motor that includes a plurality of stator members and a busbar member. The busbar member connects to coil end portions of a predetermined stator member of the plurality of stator members. The busbar member may comprise a first busbar, a second busbar, and a third busbar. The busbars may include an annular-shaped base portion, and a connection terminal connected to an outer circumference of the base portion and connected to the coil end portions. The busbar member and the plurality of stator members may be aligned in an axial direction. Each connection terminal of the busbars may have a shape projecting toward the stator member relative to the base portion.Type: GrantFiled: February 25, 2020Date of Patent: September 6, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Mitsutoshi Natsumeda, Eiji Sakaguchi, Hisato Amano, Takashi Sakurada
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Patent number: 11398760Abstract: A stator member includes a stator core, a coil, and an insulator. The stator core has a shape extending in an axial direction, and has a side surface parallel to the axial direction. The coil has a linear shape and is wound around the side surface of the stator core. The coil has a coil end portion 231 at one end of the coil having the linear shape, and a coil end portion 232 at another end of the coil having the linear shape. The insulator has insulation properties, and is provided with an outer member. The outer member has a first recess and a second recess extending in a thickness direction. The coil end portion 231 is inserted into the first recess. The coil end portion 232 is inserted into the second recess.Type: GrantFiled: February 26, 2020Date of Patent: July 26, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Mitsutoshi Natsumeda, Hisato Amano, Takashi Sakurada, Eiji Sakaguchi
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Patent number: 11329526Abstract: A stator member may include a columnar stator core, a linear coil, and an insulating insulator. The linear coil may be wound around the stator core. The insulator may be disposed between the stator core and the coil. Furthermore, the insulator may include a central member and an outer member. The central member may cover the stator core. The outer member may be connected to an outside of the central member in an axial direction of the stator core. The outer member may include a surface extending in a thickness direction in which the central member and the outer member are arranged, and a groove recessed in a direction orthogonal to the thickness direction from the surface. A connection terminal of a busbar member may be inserted into the groove.Type: GrantFiled: February 26, 2020Date of Patent: May 10, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Mitsutoshi Natsumeda, Eiji Sakaguchi, Hisato Amano, Takashi Sakurada
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Patent number: 11239719Abstract: A motor that includes a plurality of stator members and a busbar member. A coil may be wound around each of the plurality of stator members, and the plurality of stator members may be arranged in an annular shape when viewed in an axial direction of the motor. The busbar member may connect to the coil ends of the plurality of stator members. The busbar member may comprise an annular shaped base portion, and a connection terminal connected to the base portion and connected to the coil end portions. The connection terminal may be provided with two recesses. The coil end portion of a first stator member and the coil end portion of a second stator member may be inserted through the two recesses respectively, where the first stator member and the second stator member are adjacent to each other.Type: GrantFiled: February 25, 2020Date of Patent: February 1, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Mitsutoshi Natsumeda, Hisato Amano, Takashi Sakurada, Eiji Sakaguchi
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Publication number: 20200280775Abstract: A motor that includes a plurality of stator members and a busbar member. The busbar member connects to coil end portions of a predetermined stator member of the plurality of stator members. The busbar member may comprise a first busbar, a second busbar, and a third busbar. The busbars may include an annular-shaped base portion, and a connection terminal connected to an outer circumference of the base portion and connected to the coil end portions. The busbar member and the plurality of stator members may be aligned in an axial direction. Each connection terminal of the busbars may have a shape projecting toward the stator member relative to the base portion.Type: ApplicationFiled: February 25, 2020Publication date: September 3, 2020Inventors: Mitsutoshi Natsumeda, Eiji Sakaguchi, Hisato Amano, Takashi Sakurada
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Publication number: 20200280232Abstract: A motor that includes a plurality of stator members and a busbar member. A coil may be wound around each of the plurality of stator members, and the plurality of stator members may be arranged in an annular shape when viewed in an axial direction of the motor. The busbar member may connect to the coil ends of the plurality of stator members. The busbar member may comprise an annular shaped base portion, and a connection terminal connected to the base portion and connected to the coil end portions. The connection terminal may be provided with two recesses. The coil end portion of a first stator member and the coil end portion of a second stator member may be inserted through the two recesses respectively, where the first stator member and the second stator member are adjacent to each other.Type: ApplicationFiled: February 25, 2020Publication date: September 3, 2020Inventors: Mitsutoshi Natsumeda, Hisato Amano, Takashi Sakurada, Eiji Sakaguchi
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Publication number: 20200280229Abstract: A busbar device includes an insulating sheet that is annularly formed by laminating an insulating layer and an adhesive layer and also includes an annular busbar. Moreover, the busbar is adhered to the adhesive layer. The insulating sheet and the busbar are laminated in a direction parallel to a central axis of the busbar.Type: ApplicationFiled: February 24, 2020Publication date: September 3, 2020Inventors: Takashi Sakurada, Mitsutoshi Natsumeda, Eiji Sakaguchi, Hisato Amano
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Publication number: 20200280235Abstract: A stator member may include a columnar stator core, a linear coil, and an insulating insulator. The linear coil may be wound around the stator core. The insulator may be disposed between the stator core and the coil. Furthermore, the insulator may include a central member and an outer member. The central member may cover the stator core. The outer member may be connected to an outside of the central member in an axial direction of the stator core. The outer member may include a surface extending in a thickness direction in which the central member and the outer member are arranged, and a groove recessed in a direction orthogonal to the thickness direction from the surface. A connection terminal of a busbar member may be inserted into the groove.Type: ApplicationFiled: February 26, 2020Publication date: September 3, 2020Inventors: Mitsutoshi Natsumeda, Eiji Sakaguchi, Hisato Amano, Takashi Sakurada
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Publication number: 20200280236Abstract: A stator member includes a stator core, a coil, and an insulator. The stator core has a shape extending in an axial direction, and has a side surface parallel to the axial direction. The coil has a linear shape and is wound around the side surface of the stator core. The coil has a coil end portion 231 at one end of the coil having the linear shape, and a coil end portion 232 at another end of the coil having the linear shape. The insulator has insulation properties, and is provided with an outer member. The outer member has a first recess and a second recess extending in a thickness direction. The coil end portion 231 is inserted into the first recess. The coil end portion 232 is inserted into the second recess.Type: ApplicationFiled: February 26, 2020Publication date: September 3, 2020Inventors: Mitsutoshi Natsumeda, Hisato Amano, Takashi Sakurada, Eiji Sakaguchi
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Patent number: 7986205Abstract: There is provided a magnetic field generator 10 which is capable of varying an orientation of a magnetic field at a target position P easily in all directions. The magnetic field generator 10 includes a pair of magnetic field generating units 16a, 16b which are disposed coaxially so that their respective first main surfaces 28a, 28b oppose in parallel to each other, with a gap G in between. The magnetic field generating units 16a, 16b are rotated by rotation drive units 20a, 20b respectively in Arrow A directions. By rotating each of the magnetic field generating units 16a, 16b in the same one direction of the Arrow A directions by the same angle, the orientation of the magnetic field at the target position P is varied on an X-Z plane.Type: GrantFiled: September 29, 2006Date of Patent: July 26, 2011Assignee: Hitachi Metals. LtdInventors: Kentarou Horisaka, Hisato Amano
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Patent number: 7963741Abstract: The present invention provides a motor which includes a stator including a plurality of one-phase stators composed of a pair of stator cores having claw-type teeth and a coil for generating magnetic flux at the claw-type teeth, and a rotor for generating torque at a rotary shaft, wherein the stator core includes a plurality of split cores having the same shape, and the split cores are formed to have a recessed portion and a projected portion to be fitted in the recessed portion. Thereby, by using a plurality of the split cores having the same shape, one stator core is formed. On this occasion, the shape of the split cores is molded so that the recessed portion and the projected portion of one stator core are disposed at positions at which those are fitted to the projected portion and the recessed portion of the opposing stator core, respectively.Type: GrantFiled: August 14, 2007Date of Patent: June 21, 2011Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Ryoso Masaki, Yuji Enomoto, Motoya Ito, Hisato Amano, Shigeki Morinaga, Katsuyuki Yamazaki, Kazuhide Ebine
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Publication number: 20090231073Abstract: There is provided a magnetic field generator 10 which is capable of varying an orientation of a magnetic field at a target position P easily in all directions. The magnetic field generator 10 includes a pair of magnetic field generating units 16a, 16b which are disposed coaxially so that their respective first main surfaces 28a, 28b oppose in parallel to each other, with a gap G in between. The magnetic field generating units 16a, 16b are rotated by rotation drive units 20a, 20b respectively in Arrow A directions. By rotating each of the magnetic field generating units 16a, 16b in the same one direction of the Arrow A directions by the same angle, the orientation of the magnetic field at the target position P is varied on an X-Z plane.Type: ApplicationFiled: September 29, 2006Publication date: September 17, 2009Applicant: Hitachi Metals, Ltd.Inventors: Kentarou Horisaka, Hisato Amano
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Publication number: 20090189471Abstract: A spindle motor having a stator and a rotor includes: a stator core provided in the stator having salient-poles; a stator coil arranged between the salient-poles; a rotor; and a permanent magnet provided in the rotor. The stator core includes a stack of steel sheets whose salient-poles are formed by etching. The permanent magnet includes a ferromagnetic material consisting mainly of iron. The ferromagnetic material has formed in laminae on a surface thereof a layer of a fluorine compound containing an alkali element, an alkaline earth element or a rare earth element formed in laminae. Near an interface between the ferromagnetic material and the layer of the fluorine compound, iron exists in the layer of the fluorine compound such that a basic crystal structure of the fluorine compound is not changed and the fluorine compound containing the iron exists in the layer of the fluorine compound.Type: ApplicationFiled: July 29, 2008Publication date: July 30, 2009Applicant: Hitachi, Ltd.Inventors: Hisato Amano, Yuji Enomoto, Matahiro Komuro, Yuichi Satsu, Fumio Tajima
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Publication number: 20080074009Abstract: A fan system having a three-phase claw-pole motor comprising a stator and a rotor, wherein the three-phase claw-pole motor provides with stator coils for three phases which are arranged on one plane.Type: ApplicationFiled: August 24, 2007Publication date: March 27, 2008Inventors: YUJI ENOMOTO, Hisato Amano, Motoya Ito, Shigeki Morinaga, Ryoso Masaki, Kazuhide Ebine, Yuji Toyama
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Publication number: 20080069686Abstract: The present invention provides a motor which includes a stator including a plurality of one-phase stators composed of a pair of stator cores having claw-type teeth and a coil for generating magnetic flux at the claw-type teeth, and a rotor for generating torque at a rotary shaft, wherein the stator core includes a plurality of split cores having the same shape, and the split cores are formed to have a recessed portion and a projected portion to be fitted in the recessed portion. Thereby, by using a plurality of the split cores having the same shape, one stator core is formed. On this occasion, the shape of the split cores is molded so that the recessed portion and the projected portion of one stator core are disposed at positions at which those are fitted to the projected portion and the recessed portion of the opposing stator core, respectively.Type: ApplicationFiled: August 14, 2007Publication date: March 20, 2008Inventors: Ryoso Masaki, Yuji Enomoto, Motoya Ito, Hisato Amano, Shigeki Morinaga, Katsuyuki Yamazaki, Kazuhide Ebine