Patents by Inventor Shigenori Miyairi
Shigenori Miyairi 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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Patent number: 10985642Abstract: A power transmission device includes: a high speed magnet rotor which includes a magnet array which is magnetized in a radial direction; a low speed magnet rotor which includes a magnet array which is magnetized in a circumferential direction; and an inductor rotor which allows magnetic fluxes from the magnet array of the high speed magnet rotor to pass, and the high speed magnet rotor, the low speed magnet rotor and the inductor rotor are concentrically arranged and the magnet array of the low speed magnet rotor is formed such that homopolar surfaces of neighboring magnets face each other in the circumferential direction.Type: GrantFiled: September 15, 2017Date of Patent: April 20, 2021Assignee: SANYO DENKI CO., LTD.Inventors: Satoshi Sugita, Yuqi Tang, Yasushi Misawa, Shigenori Miyairi
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Patent number: 10236732Abstract: The inductor type rotary motor of m-phase (m represents an integer of 2 or more) includes a stator in which distal ends of teeth are circularly disposed, and a rotor having an inductor tooth that faces each of the distal ends of the teeth through a constant gap. The stator includes k·m teeth (k represents an integer of 1 or more), at least one permanent magnet is disposed at each of the teeth, and adjacent permanent magnets, which belong to teeth adjacent to each other, are disposed in such a manner that different polarities face each other.Type: GrantFiled: March 5, 2014Date of Patent: March 19, 2019Assignee: SANYO DENKI CO., LTD.Inventors: Satoshi Sugita, Yuqi Tang, Yasushi Misawa, Shigenori Miyairi
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Patent number: 9929631Abstract: An interior magnet linear induction motor includes an armature and a line of inductor teeth. The armature includes coils arranged between a plurality of teeth, and the line of inductor teeth is arranged so as to face the armature and includes a plurality of tooth portions arranged at a constant pitch in a linear stroke direction. An end portion of each of the plurality of teeth has a shape such that magnetoresistance of the tooth increases toward the root side. At least one permanent magnet is arranged at an end portion of each of the plurality of teeth and adjacent permanent magnets that are arranged at different teeth are magnetized such that opposite magnetic poles face each other.Type: GrantFiled: February 20, 2014Date of Patent: March 27, 2018Assignee: SANYO DENKI CO., LTD.Inventors: Satoshi Sugita, Yuqi Tang, Yasushi Misawa, Shigenori Miyairi
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Publication number: 20180006544Abstract: A power transmission device includes: a high speed magnet rotor which includes a magnet array which is magnetized in a radial direction; a low speed magnet rotor which includes a magnet array which is magnetized in a circumferential direction; and an inductor rotor which allows magnetic fluxes from the magnet array of the high speed magnet rotor to pass, and the high speed magnet rotor, the low speed magnet rotor and the inductor rotor are concentrically arranged and the magnet array of the low speed magnet rotor is formed such that homopolar surfaces of neighboring magnets face each other in the circumferential direction.Type: ApplicationFiled: September 15, 2017Publication date: January 4, 2018Inventors: Satoshi Sugita, Yuqi Tang, Yasushi Misawa, Shigenori Miyairi
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Patent number: 9742258Abstract: A rotational-linear motion converter includes a cylindrical magnet rotor, a linear rail, a teeth row, and a magnet row. The magnet rotor includes a magnet row magnetized in a radial direction of the magnet rotor. The rail includes a plurality of projecting portions and recessed portions. The teeth row includes teeth and allows a magnetic flux flowing from the magnet row of the magnet rotor to pass between the magnet rotor and the rail. The magnet row includes magnets and is magnetized in an extending direction of the rail in order to align the magnetic flux flowing from the magnet row of the magnet rotor toward the projecting portions and the recessed portions of the rail. In the magnet row magnetized in the extending direction of the rail, the same polarity faces of adjacent magnets oppose each other in the extending direction of the rail.Type: GrantFiled: April 1, 2014Date of Patent: August 22, 2017Assignee: SANYO DENKI CO., LTDInventors: Satoshi Sugita, Yuqi Tang, Yasushi Misawa, Shigenori Miyairi
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Patent number: 9613740Abstract: A moving magnetic field generating apparatus includes a magnet array including magnets disposed at a first pitch such that N and S poles of adjacent magnets in the magnet array are alternated, and first and second magnetic pole piece arrays extending along the magnet array to interpose the magnet array therebetween with a gap from the magnet array. The first and second magnetic pole piece arrays are disposed with a predetermined phase difference therebetween. The first magnetic pole piece array includes first magnetic pole pieces disposed at a second pitch in an array and each having a length enough to face at least two adjacent magnets in the magnet array. The second magnetic pole piece array is configured similarly to the first magnetic pole piece array. One of the first and second magnetic pole piece arrays and the magnet array is relatively moved to the other at a predetermined speed.Type: GrantFiled: November 7, 2014Date of Patent: April 4, 2017Assignee: SANYO DENKI CO., LTD.Inventors: Satoshi Sugita, Yasushi Misawa, Yuqi Tang, Shigenori Miyairi
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Patent number: 9281734Abstract: Provided herein is a linear motor in which a back yoke can readily be mounted onto a plurality of linear motor units. The back yoke is constituted from a back yoke assembly including a surrounding portion that entirely surrounds six linear motor units. The back yoke works to form part of respective magnetic circuits of the six linear motor units. The back yoke assembly includes first and second divided assemblies and five partition wall portions. The first and second divided assemblies are each formed by press working a magnetic plate made of silicon steel.Type: GrantFiled: June 25, 2012Date of Patent: March 8, 2016Assignee: SANYO DENKI CO., LTD.Inventors: Yuqi Tang, Satoshi Sugita, Shigenori Miyairi
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Patent number: 9178401Abstract: An armature of a linear motor includes a plurality of cooling pipe storage holes formed along a longitudinal direction of a core, and a plurality of cooling pipes stored vertically in the cooling pipe storage holes and having a meander shape. The cooling pipes vertically adjacent to each other are arranged such that inlets and outlets of the cooling pipes are alternately connected in parallel to a refrigerant inlet and a refrigerant outlet in order to allow a refrigerant to flow in the reverse direction.Type: GrantFiled: August 15, 2013Date of Patent: November 3, 2015Assignee: SANYO DENKI CO., LTD.Inventors: Satoshi Sugita, Yasushi Misawa, Shigenori Miyairi
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Patent number: 9035512Abstract: At least a rotor fixing portion and a bearing fitting portion are combined to form a hollow rotary shaft. The rotor of a rotary motor portion is fixed on the rotor fixing portion. A thrust radial bearing is fitted on the outer periphery of the bearing fitting portion and a screw nut is fitted to the bearing fitting portion. The rotor fixing portion and the bearing fitting portion are coupled with screw member(s) which are inserted into the hollow rotary shaft from one axial end of the hollow rotary shaft and axially extend inside the bearing fitting portion and the rotor fixing portion. A flange portion of the screw nut is fixed on an abutment portion of the bearing fitting portion in abutment with an end surface of an inner race of the thrust radial bearing that is located on the one axial end side.Type: GrantFiled: October 26, 2012Date of Patent: May 19, 2015Assignee: SANYO DENKI CO., LTD.Inventors: Masanori Tanaka, Shigenori Miyairi
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Publication number: 20150061649Abstract: A moving magnetic field generating apparatus includes a magnet array including magnets disposed at a first pitch such that N and S poles of adjacent magnets in the magnet array are alternated, and first and second magnetic pole piece arrays extending along the magnet array to interpose the magnet array therebetween with a gap from the magnet array. The first and second magnetic pole piece arrays are disposed with a predetermined phase difference therebetween. The first magnetic pole piece array includes first magnetic pole pieces disposed at a second pitch in an array and each having a length enough to face at least two adjacent magnets in the magnet array. The second magnetic pole piece array is configured similarly to the first magnetic pole piece array. One of the first and second magnetic pole piece arrays and the magnet array is relatively moved to the other at a predetermined speed.Type: ApplicationFiled: November 7, 2014Publication date: March 5, 2015Inventors: Satoshi Sugita, Yasushi Misawa, Yuqi Tang, Shigenori Miyairi
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Patent number: 8917087Abstract: A moving magnetic field generating apparatus includes a magnet array including magnets disposed at a first pitch such that N and S poles of adjacent magnets in the magnet array are alternated, and first and second magnetic pole piece arrays extending along the magnet array to interpose the magnet array therebetween with a gap from the magnet array. The first and second magnetic pole piece arrays are disposed with a predetermined phase difference therebetween. The first magnetic pole piece array includes first magnetic pole pieces disposed at a second pitch in an array and each having a length enough to face at least two adjacent magnets in the magnet array. The second magnetic pole piece array is configured similarly to the first magnetic pole piece array. One of the first and second magnetic pole piece arrays and the magnet array is relatively moved to the other at a predetermined speed.Type: GrantFiled: September 29, 2011Date of Patent: December 23, 2014Assignee: Sanyo Denki Co., Ltd.Inventors: Satoshi Sugita, Yasushi Misawa, Yuqi Tang, Shigenori Miyairi
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Publication number: 20140292126Abstract: A rotational-linear motion converter includes a cylindrical magnet rotor, a linear rail, a teeth row, and a magnet row. The magnet rotor includes a magnet row magnetized in a radial direction of the magnet rotor. The rail includes a plurality of projecting portions and recessed portions. The teeth row includes teeth and allows a magnetic flux flowing from the magnet row of the magnet rotor to pass between the magnet rotor and the rail. The magnet row includes magnets and is magnetized in an extending direction of the rail in order to align the magnetic flux flowing from the magnet row of the magnet rotor toward the projecting portions and the recessed portions of the rail. In the magnet row magnetized in the extending direction of the rail, the same polarity faces of adjacent magnets oppose each other in the extending direction of the rail.Type: ApplicationFiled: April 1, 2014Publication date: October 2, 2014Applicant: SANYO DENKI CO., LTD.Inventors: SATOSHI SUGITA, Yuqi Tang, Yasushi Misawa, Shigenori Miyairi
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Publication number: 20140252901Abstract: The inductor type rotary motor of m-phase (m represents an integer of 2 or more) includes a stator in which distal ends of teeth are circularly disposed, and a rotor having an inductor tooth that faces each of the distal ends of the teeth through a constant gap. The stator includes k·m teeth (k represents an integer of 1 or more), at least one permanent magnet is disposed at each of the teeth, and adjacent permanent magnets, which belong to teeth adjacent to each other, are disposed in such a manner that different polarities face each other.Type: ApplicationFiled: March 5, 2014Publication date: September 11, 2014Applicant: SANYO DENKI CO., LTD.Inventors: Satoshi Sugita, Yuqi Tang, Yasushi Misawa, Shigenori Miyairi
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Publication number: 20140232209Abstract: An interior magnet linear induction motor includes an armature and a line of inductor teeth. The armature includes coils arranged between a plurality of teeth, and the line of inductor teeth is arranged so as to face the armature and includes a plurality of tooth portions arranged at a constant pitch in a linear stroke direction. An end portion of each of the plurality of teeth has a shape such that magnetoresistance of the tooth increases toward the root side. At least one permanent magnet is arranged at an end portion of each of the plurality of teeth and adjacent permanent magnets that are arranged at different teeth are magnetized such that opposite magnetic poles face each other.Type: ApplicationFiled: February 20, 2014Publication date: August 21, 2014Applicant: SANYO DENKI CO., LTD,Inventors: Satoshi Sugita, Yuqi Tang, Yasushi Misawa, Shigenori Miyairi
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Publication number: 20140217743Abstract: A power transmission device includes: a high speed magnet rotor which includes a magnet array which is magnetized in a radial direction; a low speed magnet rotor which includes a magnet array which is magnetized in a circumferential direction; and an inductor rotor which allows magnetic fluxes from the magnet array of the high speed magnet rotor to pass, and the high speed magnet rotor, the low speed magnet rotor and the inductor rotor are concentrically arranged and the magnet array of the low speed magnet rotor is formed such that homopolar surfaces of neighboring magnets face each other in the circumferential direction.Type: ApplicationFiled: February 4, 2014Publication date: August 7, 2014Applicant: SANYO DENKI CO., LTD.Inventors: Satoshi Sugita, Yuqi Tang, Yasushi Misawa, Shigenori Miyairi
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Patent number: 8770052Abstract: A linear actuator that does not require a high assembly precision is provided. A linear actuator includes a motor portion including a rotary shaft, a rotor, and a stator, a first bearing portion that supports a first end of the rotary shaft, a locknut threadably engaged on the first end of the rotary shaft, and a ball screw mechanism including a ball screw nut screwed to the locknut and a ball screw threadably engaged with the ball screw nut. Gaps formed between an outer peripheral portion of the rotary shaft and an inner peripheral portion of the locknut, except a male thread portion formed on the rotary shaft and a female thread portion formed on the locknut threadably engaged with each other, are defined to have respective predetermined sizes.Type: GrantFiled: December 10, 2010Date of Patent: July 8, 2014Assignee: Sanyo Denki Co., Ltd.Inventors: Koji Nakatake, Kazuyuki Kitazawa, Shigenori Miyairi
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Patent number: 8692428Abstract: A linear actuator having an output shaft with a long moving distance is provided. A linear actuator includes a rotary shaft, a motor portion having a rotor and a stator, a ball screw mechanism including a ball screw nut fixed to a first end of the rotary shaft and a ball screw, a casing assembly including a first end bracket and a second end bracket, an electromagnetic brake device including a rotary brake disc, a stationary brake disc, and an electromagnetic coil, and a brake cover for covering the electromagnetic brake device. The electromagnetic brake device has a hollow structure allowing a second end of the rotary shaft to pass therethrough.Type: GrantFiled: December 10, 2010Date of Patent: April 8, 2014Assignee: Sanyo Denki Co., Ltd.Inventors: Shigenori Miyairi, Koji Nakatake
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Publication number: 20140054979Abstract: An armature of a linear motor includes a plurality of cooling pipe storage holes formed along a longitudinal direction of a core, and a plurality of cooling pipes stored vertically in the cooling pipe storage holes and having a meander shape. The cooling pipes vertically adjacent to each other are arranged such that inlets and outlets of the cooling pipes are alternately connected in parallel to a refrigerant inlet and a refrigerant outlet in order to allow a refrigerant to flow in the reverse direction.Type: ApplicationFiled: August 15, 2013Publication date: February 27, 2014Applicant: SANYO DENKI CO., LTD.Inventors: Satoshi Sugita, Yasushi Misawa, Shigenori Miyairi
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Publication number: 20120326537Abstract: Provided herein is a linear motor in which a back yoke can readily be mounted onto a plurality of linear motor units. The back yoke is constituted from a back yoke assembly including a surrounding portion that entirely surrounds six linear motor units. The back yoke works to form part of respective magnetic circuits of the six linear motor units. The back yoke assembly includes first and second divided assemblies and five partition wall portions. The first and second divided assemblies are each formed by press working a magnetic plate made of silicon steel.Type: ApplicationFiled: June 25, 2012Publication date: December 27, 2012Applicant: SANYO DENKI CO., LTD.Inventors: Yuqi Tang, Satoshi Sugita, Shigenori Miyairi
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Publication number: 20120074930Abstract: A moving magnetic field generating apparatus includes a magnet array including magnets disposed at a first pitch such that N and S poles of adjacent magnets in the magnet array are alternated, and first and second magnetic pole piece arrays extending along the magnet array to interpose the magnet array therebetween with a gap from the magnet array. The first and second magnetic pole piece arrays are disposed with a predetermined phase difference therebetween. The first magnetic pole piece array includes first magnetic pole pieces disposed at a second pitch in an array and each having a length enough to face at least two adjacent magnets in the magnet array. The second magnetic pole piece array is configured similarly to the first magnetic pole piece array. One of the first and second magnetic pole piece arrays and the magnet array is relatively moved to the other at a predetermined speed.Type: ApplicationFiled: September 29, 2011Publication date: March 29, 2012Applicant: SANYO DENKI CO., LTD.Inventors: Satoshi Sugita, Yasushi Misawa, Yuqi Tang, Shigenori Miyairi