Patents by Inventor Mitsuru Kato
Mitsuru Kato 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: 7287311Abstract: A manufacturing method of a stator for vehicular rotary electric machine includes: forming an indentation in a radial direction in a side face of each of electrical conductors in the machine by pressing; inserting the electrical conductors in a radially side-by-side relationship with each other in slots of the machine; bending each of the electrical conductors and radially adjacent electrical conductors in different circumferential directions by a predetermined pole pitch such that the indentations formed in respective side faces of the adjacent electrical conductors pass each other in a face-to-face relationship; and bonding on each of the electrical conductors to one end of the adjacent electrical conductors.Type: GrantFiled: May 24, 2005Date of Patent: October 30, 2007Assignee: DENSO CorporationInventors: Masao Ichikawa, Yasunori Kitakado, Motohiro Murahashi, Kazuhiko Fukuda, Mitsuru Kato
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Publication number: 20070186427Abstract: Is disclosed an inclination sensor for detecting a tilted state of a case by detecting by a magnetic sensor a magnetized portion of a pendulum type movement mounted rotatably on a shaft in accordance with inclination of the case, wherein the shaft fitted with a clearance in a rotation shaft hole of the movement is further provided at both ends with loosely fitted thereon spacers and mounted in the case. This realizes non-restricted state of both the movement and the shaft. Thus, the movement obtains an improved response characteristic and an increased stability since no oscillation of a running vehicle is transmitted through the shaft to the movement.Type: ApplicationFiled: September 30, 2004Publication date: August 16, 2007Applicant: TOYO DENSO KABUSHIKI KAISHAInventors: Yoshitaka Noguchi, Kenji Ikuta, Akihiro Sugeno, Mitsuru Kato, Masahiro Matsuda, Sadayoshi Oshima
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Publication number: 20070180681Abstract: A method of manufacturing a winding includes steps of twisting U-shaped conductor segments, inserting straight portions of the twisted conductor segments in slots of a stator core, bending ends of the straight portions in a circumferential direction of the stator core and joining the ends. The method further includes a step of pressing turn portions of the U-shaped conductor segments by a turn portion twisting apparatus such that widths of the turn portions reduce in radial directions. The pressing step is performed simultaneously with the twisting step. Alternatively, the pressing step is performed after the twisting step.Type: ApplicationFiled: March 2, 2007Publication date: August 9, 2007Applicant: Denso CorporationInventors: Mitsuru Kato, Yasunori Kitakado, Motohiro Murahashi
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Patent number: 7210215Abstract: A method of manufacturing a winding includes steps of twisting U-shaped conductor segments, inserting straight portions of the twisted conductor segments in slots of a stator core, bending ends of the straight portions in a circumferential direction of the stator core and joining the ends. The method further includes a step of pressing turn portions of the U-shaped conductor segments by a turn portion twisting apparatus such that widths of the turn portions reduce in radial directions. The pressing step is performed simultaneously with the twisting step. Alternatively, the pressing step is performed after the twisting step.Type: GrantFiled: April 29, 2005Date of Patent: May 1, 2007Assignee: Denso CorporationInventors: Mitsuru Kato, Yasunori Kitakado, Motohiro Murahashi
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Patent number: 7193010Abstract: An aqueous resin composition satisfying the following criteria (I)–(III). (I) The aqueous resin composition contains (a) an aqueous dispersion of a polyurethane resin obtained from a macromolecular polyol, organic polyisocyanate, chain extending agent and 2,2-dimethylolbutanoic acid, and, if required, (b) an aqueous dispersion of an acrylic resin. (II) When the resin comprising this aqueous resin composition contains mainly a polyurethane resin, the inherent viscosity (?inh) of the polyurethane resin measured at a concentration of 0.5 g/dL in dimethylformamide solution is in the range of 0.2–0.7 dL/g. After this aqueous resin composition is dried, the elastic modulus at 25° C. of the film obtained by heat treatment at 80° C. for 8 hours is in the range of 8.0×106–5.0×108 Pa, and the elastic modulus at 80° C. is 8.0×107 Pa or less.Type: GrantFiled: September 29, 2003Date of Patent: March 20, 2007Assignee: Kuraray Co., Ltd.Inventors: Mitsuru Kato, Yukitoshi Higashinaka
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Patent number: 7122596Abstract: Provided are a leather-like sheet fabricated by infiltrating an aqueous resin dispersion (A) into a fibrous substrate, which satisfies a requirement (I) that the aqueous resin dispersion, (A) comprises essentially a main resin (a) stabilized with a surfactant, a polymer (b) having a polyoxyethylene group in its side chains, and a surfactant (c), a requirement (II) that the main resin (a) comprises an urethane resin (a1) and/or an urethane-acrylic composite resin (a2), and the resin skeleton contains from 1 to 10 mmols of a carboxyl group per 100 g of the resin, a requirement (III) that the polymer (b) is obtained through polymerization of a polyoxyethylene group-having ethylenic unsaturated monomer (b1) and any other ethylenic unsaturated monomer (b2) in a ratio by mass (b1)/(b2)=60/40 to 100/0, and a requirement (IV) that the percentage, % by mass (?) of the polyoxyethylene group in the polymer (b) and the number of mols (?) of the amino group per gram of the polymer (b) satisfy 35??+?×20000?60; and an indusType: GrantFiled: August 5, 2003Date of Patent: October 17, 2006Assignee: Kuraray Co., Ltd.Inventors: Mitsuru Kato, Kimio Nakayama, Nobuo Takaoka
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Patent number: 7032291Abstract: A method of manufacturing a stator winding includes a twisting step of U-shaped conductor segments having a pair of straight portions by moving the straight portions in the circumferential direction while restraining the turn portions of the U-shaped conductor segments in the axial direction by a pressing tool. After the previously twisted U-shaped conductor segments are inserted into slots of a stator core, the straight portions are bent in the circumferential direction. The pressing tool is constituted of a stationary top plate that has recesses into which the straight portions are inserted and a movable top plate that is movable to close the recesses after the straight portions are inserted in the recesses.Type: GrantFiled: June 17, 2003Date of Patent: April 25, 2006Assignee: Denso CorporationInventors: Mitsuru Kato, Yasunori Kitakado, Motohiro Murahashi
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Patent number: 7034429Abstract: To secure insulation between electrical conductors at a coil end, a first electrical conductor at one coil end is arranged so as to intersect a radially adjacent second electrical conductor at one point or more. The electrical conductor is formed with radial indentations in side faces that are opposite side faces in opposing electrical conductors at any of the intersecting portions, the indentations having depths that increase toward the near ear of the electrical conductors. Sufficient clearances are thereby secured between electrical conductors in their intersecting portions near their ends where the insulating films are susceptible to damage because of welding heat. Electrical insulation is thus ensured, and the cooling efficiency at the coil end is improved.Type: GrantFiled: January 3, 2005Date of Patent: April 25, 2006Assignee: Denso CorporationInventors: Masao Ichikawa, Yasunori Kitakado, Motohiro Murahashi, Kazuhiko Fukuda, Mitsuru Kato
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Patent number: 6971153Abstract: A method of manufacturing a winding of a rotary electric machine includes steps of pressing a portion of a conductor segment in a predetermined direction to reduce its dimension in the direction, inserting the conductor segment into a slot of a stator core, bending the conductor segments and joining ends of the conductor segments. In the pressing step, the conductor segment is pressed with a punch in a condition that it is held in a die that has curved inside corner portions to restrict deformation of corners of the pressed portion.Type: GrantFiled: February 26, 2003Date of Patent: December 6, 2005Assignee: Denso CorporationInventors: Takashi Tokizawa, Mitsuru Kato, Yoshinori Nakamura, Yasunori Kitakado, Motohiro Murahashi
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Publication number: 20050229381Abstract: A rotary electric machine stator includes a stator core having plural slots and a stator winding that is composed of plural conductor segments. Each conductor segment has a straight portion disposed in the slot and connection ends projecting from the slots and welded to another. The connection ends to be welded cross each other at an angle larger than zero degree.Type: ApplicationFiled: June 14, 2005Publication date: October 20, 2005Applicant: Denso CorporationInventor: Mitsuru Kato
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Publication number: 20050217105Abstract: To secure insulation between electrical conductors at a coil end, a first electrical conductor at one coil end is arranged so as to intersect a radially adjacent second electrical conductor at one point or more. The electrical conductor is formed with radial indentations in side faces that are opposite side faces in opposing electrical conductors at any of the intersecting portions, the indentations having depths that increase toward the near ear of the electrical conductors. Sufficient clearances are thereby secured between electrical conductors in their intersecting portions near their ends where the insulating films are susceptible to damage because of welding heat. Electrical insulation is thus ensured, and the cooling efficiency at the coil end is improved.Type: ApplicationFiled: May 24, 2005Publication date: October 6, 2005Applicant: Denso CorporationInventors: Masao Ichikawa, Yasunori Kitakado, Motohiro Murahashi, Kazuhiko Fukuda, Mitsuru Kato
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Publication number: 20050188532Abstract: A method of manufacturing a winding includes steps of twisting U-shaped conductor segments, inserting straight portions of the twisted conductor segments in slots of a stator core, bending ends of the straight portions in a circumferential direction of the stator core and joining the ends. The method further includes a step of pressing turn portions of the U-shaped conductor segments by a turn portion twisting apparatus such that widths of the turn portions reduce in radial directions. The pressing step is performed simultaneously with the twisting step. Alternatively, the pressing step is performed after the twisting step.Type: ApplicationFiled: April 29, 2005Publication date: September 1, 2005Applicant: Denso CorporationInventors: Mitsuru Kato, Yasunori Kitakado, Motohiro Murahashi
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Patent number: 6930425Abstract: A rotary electric machine stator includes a stator core having plural slots and a stator winding that is composed of plural conductor segments. Each conductor segment has a straight portion disposed in the slot and connection ends projecting from the slots and welded to another. The connection ends to be welded cross each other at an angle larger than zero degree.Type: GrantFiled: February 20, 2003Date of Patent: August 16, 2005Assignee: Denso CorporationInventor: Mitsuru Kato
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Patent number: 6903479Abstract: A method of manufacturing a winding includes steps of twisting U-shaped conductor segments, inserting straight portions of the twisted conductor segments in slots of a stator core, bending ends of the straight portions in a circumferential direction of the stator core and joining the ends. The method further includes a step of pressing turn portions of the U-shaped conductor segments by a turn portion twisting apparatus such that widths of the turn portions reduce in radial directions. The pressing step is performed simultaneously with the twisting step. Alternatively, the pressing step is performed after the twisting step.Type: GrantFiled: May 28, 2003Date of Patent: June 7, 2005Assignee: Denso CorporationInventors: Mitsuru Kato, Yasunori Kitakado, Motohiro Murahashi
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Patent number: 6903478Abstract: A method for manufacturing a winding for an electric rotating machine includes steps of altering, passing, shaping, and connecting. In the altering step, connecting portions of conductor segments, a part of which is exposed, are altered in shape by a pressing die to provide good contact between the segments when they are connected. The altered segments are passing through slots of a stator core in the passing step. Ends of protruded portions of the segments are shaped so that they make an angle with respect to the radial section of the stator core in the shaping step. Adjacent segments are connected together at ends of the connecting portion in the connecting step.Type: GrantFiled: March 14, 2003Date of Patent: June 7, 2005Assignee: Denso CorporationInventors: Masaomi Dobashi, Mitsuru Kato, Koji Hayashida, Hiroaki Takeda, Yoshinori Nakamura, Yasunori Kitakado, Motohiro Murahashi
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Publication number: 20050116571Abstract: To secure insulation between electrical conductors at a coil end, a first electrical conductor at one coil end is arranged so as to intersect a radially adjacent second electrical conductor at one point or more. The electrical conductor is formed with radial indentations in side faces that are opposite side faces in opposing electrical conductors at any of the intersecting portions, the indentations having depths that increase toward the near ear of the electrical conductors. Sufficient clearances are thereby secured between electrical conductors in their intersecting portions near their ends where the insulating films are susceptible to damage because of welding heat. Electrical insulation is thus ensured, and the cooling efficiency at the coil end is improved.Type: ApplicationFiled: January 3, 2005Publication date: June 2, 2005Applicant: Denso CorporationInventors: Masao Ichikawa, Yasunori Kitakado, Motohiro Murahashi, Kazuhiko Fukuda, Mitsuru Kato
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Patent number: 6897594Abstract: To secure insulation between electrical conductors at a coil end, a first electrical conductor at one coil end is arranged so as to intersect a radially adjacent second electrical conductor at one point or more. The electrical conductor is formed with radial indentations in side faces that are opposite side faces in opposing electrical conductors at any of the intersecting portions, the indentations having depths that increase toward the near end of the electrical conductors. Sufficient clearances are thereby secured between electrical conductors in their intersecting portions near their ends where the insulating films are susceptible to damage because of welding heat. Electrical insulation is thus ensured, and the cooling efficiency at the coil end is improved.Type: GrantFiled: January 14, 2003Date of Patent: May 24, 2005Assignee: Denso CorporationInventors: Masao Ichikawa, Yasunori Kitakado, Motohiro Murahashi, Kazuhiko Fukuda, Mitsuru Kato
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Patent number: 6862796Abstract: A conductor segment constituting a stator coil has a head conductor portion protruding from slots of a stator core for constituting a head side coil end. The head conductor portion of the conductor segment consists of a V-angled portion and straight portions extending straight in the axial direction from both ends of the V-angled portion, so as to form, as a whole, a pentagonal shape.Type: GrantFiled: December 26, 2002Date of Patent: March 8, 2005Assignee: Denso CorporationInventor: Mitsuru Kato
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Patent number: 6834422Abstract: A stator winding wound on a cylindrical stator core of a rotary electric machine such as an alternator for use in an automobile vehicle is formed in the following manner. Plural U-shaped conductor segments are inserted into slots formed in the stator core. Pairs segment ends to be electrically connected are aligned along two or more coaxial circumferences and correctly positioned by individually restricting each pair of segment ends. Correctly positioned plural pairs are continuously welded one by one by rotating the stator core.Type: GrantFiled: February 7, 2003Date of Patent: December 28, 2004Assignee: Denso CorporationInventor: Mitsuru Kato
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Publication number: 20040074080Abstract: A method of manufacturing a stator winding includes a twisting step of U-shaped conductor segments having a pair of straight portions by moving the straight portions in the circumferential direction while restraining the turn portions of the U-shaped conductor segments in the axial direction by a pressing tool. After the previously twisted U-shaped conductor segments are inserted into slots of a stator core, the straight portions are bent in the circumferential direction. The pressing tool is constituted of a stationary top plate that has recesses into which the straight portions are inserted and a movable top plate that is movable to close the recesses after the straight portions are inserted in the recesses.Type: ApplicationFiled: June 17, 2003Publication date: April 22, 2004Applicant: Denso CorporationInventors: Mitsuru Kato, Yasunori Kitakado, Motohiro Murahashi