Patents by Inventor Yasushi Misawa
Yasushi Misawa 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: 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: 9059626Abstract: An electric machine includes a magnetic pole piece array including a plurality of magnetic pole pieces spaced along a permanent magnet array. The permanent magnet array is in immovable relation with winding portions. The pitch of a plurality of permanent magnets and the pitch of a plurality of magnetic pole pieces are determined such that magnetic flux flows through two of the permanent magnets magnetized in the same direction and located in the permanent magnet array with one permanent magnet interposed between the two permanent magnets, and also flows through one or two of the magnetic pole pieces facing the one permanent magnet interposed between the two permanent magnets and magnetized in a direction of magnetization different from the direction of magnetization of the two permanent magnets.Type: GrantFiled: October 26, 2012Date of Patent: June 16, 2015Assignee: SANYO DENKI CO., LTD.Inventors: Satoshi Sugita, Yuqi Tang, Yasushi Misawa
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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: 8928313Abstract: A low-cost magnetic encoder that facilitates generating sinusoidal magnetic flux is provided. First and second permanent magnet arrays each include a plurality of permanent magnets arranged such that magnetic poles having the same polarity face each other, and magnetic yokes disposed on side surfaces of the plurality of permanent magnets. The permanent magnets and the magnetic yokes are arranged side by side at a predetermined pitch in the moving direction of a magnetic piece array. First and second magnetic detectors corresponding to the first and second permanent magnet arrays are disposed in a positional relationship allowing detection of leakage magnetic flux generated when the permanent magnet arrays and the magnetic piece array are displaced with respect to each other.Type: GrantFiled: October 26, 2012Date of Patent: January 6, 2015Assignee: Sanyo Denki Co., Ltd.Inventors: Satoshi Sugita, Yuqi Tang, Yasushi Misawa
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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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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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Patent number: 8587244Abstract: A method and a system for determining deterioration of permanent magnets of an electric apparatus to be inspected that facilitate determination without the need to remove the electric apparatus from a facility where it is installed. If the electric apparatus to be inspected is a three-phase linear motor, a current detector is used to acquire currents. A three-phase/two-phase conversion section converts the acquired currents into an ?-axis current command and a ?-axis current command. A locus of a current vector is computed based on the ?-axis current command and the ?-axis current command. A comparing and determining section compares the computed locus with a standard upper limit value stored in a storage means. If the number of times that the locus of the current vector exceeds the standard upper limit value exceeds a predetermined value, it is determined that the permanent magnets have been deteriorated.Type: GrantFiled: September 22, 2011Date of Patent: November 19, 2013Assignee: Sanyo Denki Co., Ltd.Inventors: Akihiko Takahashi, Yasushi Misawa, Manabu Horiuchi
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Patent number: 8569916Abstract: A mover includes a permanent magnet array including permanent magnets magnetized in a perpendicular direction perpendicular to a motion direction of the mover such that magnetic poles having different polarities alternately appear on magnetic pole surfaces of the permanent magnets along the motion direction. A stator includes first and second magnetic pole portion assemblies disposed on both sides of the permanent magnet array in the perpendicular direction and each including magnetic pole portions facing the magnetic pole surfaces, and a single phase winding that excites the magnetic pole portions forming the first and second magnetic pole portion assemblies. The winding has a hollow structure formed by winding a winding conductor into a coil such that the magnetic pole portions included in the first magnetic pole portion assembly and the magnetic pole portions included in the second magnetic pole portion assembly are located in an internal space of the winding.Type: GrantFiled: November 9, 2010Date of Patent: October 29, 2013Assignee: Sanyo Denki Co., Ltd.Inventors: Satoshi Sugita, Yasushi Misawa, Yuqi Tang
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Publication number: 20130257180Abstract: The tubular linear motor includes an armature having a coil and a magnetic exciter having a permanent magnet provided to face the coil. The armature has a yoke that blocks a magnetic flux, teeth that partition a slot for storing the coil, and the coil that is arranged to extend over the teeth from an inner side of the slot toward the magnetic exciter while a mechanical gap is reserved between the magnetic exciter and the coil. The magnetic exciter has a plurality of permanent magnets by interposing a soft magnetic body.Type: ApplicationFiled: March 27, 2013Publication date: October 3, 2013Applicant: SANYO DENKI CO., LTD.Inventors: YUQI TANG, Yasushi Misawa
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Publication number: 20130057085Abstract: An electric machine that allows enhancement of thrust of a mover is provided. An electric machine includes a magnetic pole piece array including a plurality of magnetic pole pieces spaced along a permanent magnet array. The magnetic pole pieces are disposed between the permanent magnet array and winding portions in immovable relation with the winding portions. The pitch of permanent magnets and the pitch of magnetic pole pieces are determined such that magnetic flux flows through two of the permanent magnets magnetized in the same direction and located in the permanent magnet array with one permanent magnet interposed between the two permanent magnets, and also flows through one of the magnetic pole pieces facing the one permanent magnet interposed between the two permanent magnets and magnetized in a direction of magnetization different from the direction of magnetization of the two permanent magnets.Type: ApplicationFiled: August 30, 2012Publication date: March 7, 2013Applicant: SANYO DENKI CO., LTD.Inventors: Satoshi Sugita, Yuqi Tang, Yasushi Misawa
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Patent number: 8368258Abstract: A linear motor armature in which pressure loss of a coolant flowing in a cooling conduit and possible significant non-uniformity in temperature distribution are reduced over the entire armature. A manifold 5, 6h and a pair of cooling conduits 7, 9 are configured such that a coolant is supplied from one connecting conduit 27 of the cooling conduit 7, and one connecting conduit 33 of the cooling conduit 9, and discharged from the other connecting conduit 29 of the cooling conduit 7 and the other connecting conduit 35 of the cooling conduit 9.Type: GrantFiled: March 5, 2009Date of Patent: February 5, 2013Assignee: Sanyo Denki Co., Ltd.Inventors: Satoshi Sugita, Yasushi Misawa
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Patent number: 8198760Abstract: A mover includes a permanent magnet array having a plurality of permanent magnets that are magnetized in a direction perpendicular to a motion direction of the mover such that magnetic poles having different polarities alternately appear on magnetic pole surfaces of the plurality of permanent magnets in the motion direction. A stator includes first and second magnetic pole portion arrays and three excitation windings. Each of the magnetic pole portion arrays include a plurality of plate-like magnetic pole portions disposed on both sides of the permanent magnet array in the perpendicular direction. Each of the excitation windings is hollow-structured whereby two magnetic pole portions included in the first magnetic pole portion array and two magnetic pole portions included in the second magnetic pole portion array are located in an internal space of the coil and are excited by the corresponding one of the excitation windings.Type: GrantFiled: January 6, 2010Date of Patent: June 12, 2012Assignee: Sanyo Denki Co., Ltd.Inventors: Satoshi Sugita, Yasushi Misawa, Yuqi Tang
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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
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Publication number: 20120068653Abstract: A method and a system for determining deterioration of permanent magnets of an electric apparatus to be inspected that facilitate determination without the need to remove the electric apparatus from a facility where it is installed. If the electric apparatus to be inspected is a three-phase linear motor, a current detector is used to acquire currents. A three-phase/two-phase conversion section converts the acquired currents into an ?-axis current command and a ?-axis current command. A locus of a current vector is computed based on the ?-axis current command and the ?-axis current command. A comparing and determining section compares the computed locus with a standard upper limit value stored in a storage means. If the number of times that the locus of the current vector exceeds the standard upper limit value exceeds a predetermined value, it is determined that the permanent magnets have been deteriorated.Type: ApplicationFiled: September 22, 2011Publication date: March 22, 2012Applicant: SANYO DENKI CO., LTD.Inventors: Akihiko Takahashi, Yasushi Misawa, Manabu Horiuchi
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Publication number: 20110316358Abstract: A linear motor armature in which pressure loss of a coolant flowing in a cooling conduit and possible significant non-uniformity in temperature distribution are reduced over the entire armature. A manifold 5, 6h and a pair of cooling conduits 7, 9 are configured such that a coolant is supplied from one connecting conduit 27 of the cooling conduit 7, and one connecting conduit 33 of the cooling conduit 9, and discharged from the other connecting conduit 29 of the cooling conduit 7 and the other connecting conduit 35 of the cooling conduit 9.Type: ApplicationFiled: March 5, 2009Publication date: December 29, 2011Applicant: SANYO DENKI CO., LTD.Inventors: Satoshi Sugita, Yasushi Misawa
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Publication number: 20110109173Abstract: A mover includes a permanent magnet array including permanent magnets magnetized in a perpendicular direction perpendicular to a motion direction of the mover such that magnetic poles having different polarities alternately appear on magnetic pole surfaces of the permanent magnets along the motion direction. A stator includes first and second magnetic pole portion assemblies disposed on both sides of the permanent magnet array in the perpendicular direction and each including magnetic pole portions facing the magnetic pole surfaces, and a single phase winding that excites the magnetic pole portions forming the first and second magnetic pole portion assemblies. The winding has a hollow structure formed by winding a winding conductor into a coil such that the magnetic pole portions included in the first magnetic pole portion assembly and the magnetic pole portions included in the second magnetic pole portion assembly are located in an internal space of the winding.Type: ApplicationFiled: November 9, 2010Publication date: May 12, 2011Applicant: SANYO DENKI CO., LTD.Inventors: Satoshi Sugita, Yasushi Misawa, Yuqi Tang