Patents by Inventor Masahiro Seguchi
Masahiro Seguchi 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: 6825589Abstract: Provided is a multi-turn sequential segment joining stator coil capable of suppressing the differences in electromotive voltage between parallel circuits and of carrying a large current. Partial coils are accommodated in a plurality of continuous conductor accommodation positions of different slots. The partial coils accommodated in the same slot are separately connected in series to each other to produce parallel coils, and the produced parallel coils are connected in parallel with each other. This configuration enables the production of a sequential segment joining stator coil type electric rotating machine with a size-reduced head-side coil end.Type: GrantFiled: July 10, 2003Date of Patent: November 30, 2004Assignee: Denso CorporationInventors: Shinji Kouda, Masahiro Seguchi
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Publication number: 20040232800Abstract: A compact and reliable structure of a multi-rotor synchronous machine which may be employed as a generator/motor for automotive vehicles is provided. The machine includes an outer rotor having permanent magnets, an inner rotor having permanent magnets disposed to be rotatable relative to the outer rotor, a stator core having armature coils interlinking with field magnetic fluxes produced by the outer and inner rotors, and a rotor-to-rotor relative rotation controlling mechanism. A relative angle between the outer and inner rotors is controlled within a given angular range by controlling the phase and quantity of current flowing through the armature coils to rotate the inner rotor relative to the outer rotor through the rotor-to-rotor relative rotation controlling mechanism, thereby changing the magnetic fluxes interlinking with the armature coils as needed.Type: ApplicationFiled: May 20, 2004Publication date: November 25, 2004Inventors: Masahiro Seguchi, Shigenori Yoneda, Yuichi Imani
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Patent number: 6798104Abstract: A rotary electric machine includes a stator core having a plurality of slots disposed at an inner periphery, an armature winding disposed in the slots and a rotor disposed inside the inner periphery of the stator. The rotor includes a first rotor portion and a second rotor portion, which are disposed magnetically in parallel with each other. The first rotor portion has a plurality of permanent-magnet poles, and a second rotor portion has a plurality of salient induction poles.Type: GrantFiled: December 16, 2002Date of Patent: September 28, 2004Assignee: Denso CorporationInventors: Hiroaki Kajiura, Masahiro Seguchi
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Publication number: 20040164637Abstract: The present invention relates an electric rotating machine comprising a plurality of phase coils each composed of a plurality of partial coils each made by connecting segments each composed of an inside-slot conductor portion to be accommodated in each of slots of each of phase slot groups made in a stator core and an outside-slot conductor portion protruding from the slot. Of the plurality of partial coils constituting each of the phase coils, in each of the partial coils to be connected to an input/output terminal, its inside-slot conductor portion is accommodated in the slot other than end portions of the phase slot group in a circumferential direction of the stator core. This reduces the electric potential difference between the outside-slot conductor portion continuing thereinto and the outside-slot conductor portion of an adjacent phase coil, thereby improving the insulating performance.Type: ApplicationFiled: September 17, 2003Publication date: August 26, 2004Applicant: DENSO CORPORATIONInventor: Masahiro Seguchi
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Patent number: 6774528Abstract: Three partial coils are accommodated in inphase slots arranged successively in the circumferential direction and also accommodated in the same conductor accommodation position set. Each layer coil is constituted by serially connecting these partial coils. Respective layer coils are connected in parallel to each other to form a phase winding.Type: GrantFiled: July 8, 2003Date of Patent: August 10, 2004Assignee: Denso CorporationInventors: Shinji Kouda, Masahiro Seguchi
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Publication number: 20040104638Abstract: A yoke includes a plurality of recessed portions. A teeth block includes a plurality of protruding portions being coupled or fitted into the recessed portions of the yoke. The recessed portions and the protruding portions are disposed as a plurality of pairs in the lamination direction. The protruding portions and the yoke are fixed with a teeth fixing pin.Type: ApplicationFiled: November 26, 2003Publication date: June 3, 2004Applicant: DENSO CORPORATIONInventors: Shigenori Yoneda, Masahiro Seguchi, Noriyasu Inomata
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Publication number: 20040061402Abstract: Provided is a multi-turn sequential segment joining stator coil capable of suppressing the differences in electromotive voltage between parallel circuits and of carrying a large current. Partial coils are accommodated in a plurality of continuous conductor accommodation positions of different slots. The partial coils accommodated in the same slot are separately connected in series to each other to produce parallel coils, and the produced parallel coils are connected in parallel with each other. This configuration enables the production of a sequential segment joining stator coil type electric rotating machine with a size-reduced head-side coil end.Type: ApplicationFiled: July 10, 2003Publication date: April 1, 2004Applicant: DENSO CORPORATIONInventors: Shinji Kouda, Masahiro Seguchi
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Publication number: 20040041491Abstract: A sequentially joined-segment coil for a rotary electric machine such an electric motor is provided. The coil has an end portion which is made up of heads of conductor segments and projects from an end of a core. The heads of conductor segments have turns or bulges. The bulges are lapped over one another in various forms or shifted in location in an axis direction of the core, thereby permitting the core to be decreased in diameter, which provides for decreases in size and weight of the rotary electrical machine.Type: ApplicationFiled: June 24, 2003Publication date: March 4, 2004Applicant: Denso CorporationInventors: Tetsuya Gorohata, Shinji Kouda, Masahiro Seguchi, Kanehisa Urano, Hitoshi Hirano, Youichi Kamakura
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Patent number: 6590312Abstract: A rotary electric machine for a hybrid vehicle includes a rotor connected between a vehicle engine and a torque transmission mechanism at the back of the vehicle engine and a stator. The rotor includes an outer rotor portion having an inner surface electro-magnetically connected to the outer surface of the stator, an inner rotor portion having an outer surface electro-magnetically connected to the inner surface of the stator. The stator includes a stator core disposed between the inner rotor portion and the outer rotor portion and a multi-phase winding wound on the stator to be electro-magnetically connected with both the outer and inner rotor portions.Type: GrantFiled: November 17, 2000Date of Patent: July 8, 2003Assignee: Denso CorporationInventors: Masahiro Seguchi, Keiichiro Banzai, Sumio Yanase, Shinji Kouda, Shigenori Yoneda
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Publication number: 20030090167Abstract: A rotary electric machine includes a stator core having a plurality of slots disposed at an inner periphery, an armature winding disposed in the slots and a rotor disposed inside the inner periphery of the stator. The rotor includes a first rotor portion and a second rotor portion, which are disposed magnetically in parallel with each other. The first rotor portion has a plurality of permanent-magnet poles, and a second rotor portion has a plurality of salient induction poles.Type: ApplicationFiled: December 16, 2002Publication date: May 15, 2003Applicant: DENSO CORPORATIONInventors: Hiroaki Kajiura, Masahiro Seguchi
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Patent number: 6563246Abstract: A rotary electric machine includes a stator core having a plurality of slots disposed at an inner periphery, an armature winding disposed in the slots and a rotor disposed inside the inner periphery of the stator. The rotor includes a first rotor portion and a second rotor portion, which are disposed magnetically in parallel with each other. The first rotor portion has a plurality of permanent-magnet poles, and a second rotor portion has a plurality of salient induction poles.Type: GrantFiled: October 13, 2000Date of Patent: May 13, 2003Assignee: Denso CorporationInventors: Hiroaki Kajiura, Masahiro Seguchi
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Patent number: 6501190Abstract: An accessory device driving apparatus is disposed between an internal combustion engine and an accessory device of a vehicle. The driving apparatus is constructed as a coaxial dual rotor-type electric motor/generator that has two electromagnetically induction-coupled rotors to operate as a motor and a generator. One rotor is coupled with the engine to rotate at a speed higher than that of the engine, and the other rotor is coupled with the accessory device to rotate at a speed higher than that of the accessory device. The rotors are restricted from rotating in a reverse direction opposite a direction of forward rotation of the engine by one-way clutches, respectively.Type: GrantFiled: October 5, 2000Date of Patent: December 31, 2002Assignee: Denso CorporationInventors: Masahiro Seguchi, Yasuaki Yukawa
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Patent number: 6401849Abstract: First and second dynamo-electrical machines are provided. A first rotor forming the first dynamo-electrical machine together with a second rotor is connected to either one of a front driving shaft and rear driving shaft. A second rotor forming the second dynamo-electrical machine together with a stator is connected to another one of the front driving shaft and rear driving shaft. As a result, a torque generated by the first dynamo-electric machine is transmitted to either one of the front and rear driving shafts, connected to the first rotor. A torque which subtracts a reaction torque caused by the torque generated by the first dynamo-electric machine from a torque generated by the second dynamo-electric machine is transmitted to another one of the front and rear driving shafts, connected to the second rotor.Type: GrantFiled: December 10, 1996Date of Patent: June 11, 2002Assignee: Denso CorporationInventors: Masahiro Seguchi, Keiichiro Banzai
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Patent number: 6380653Abstract: A rotational power converter is composed of a stator fixed to a cylindrical housing and a first rotor and a second rotor rotatably supported in the housing. The first rotor is driven by an internal combustion engine, and electric power is supplied to the stator from a battery, forming a rotating magnetic field in the stator. Rotational power is electromagnetically transferred from the first rotor to the second rotor that is connected to driving wheels of a vehicle. The amount of the rotational power of the second rotor is adjusted by controlling electric current supplied to the stator. The battery either supplies power or receives power according to the amount of the rotational power of the second rotor. Since the electric current is supplied only to the stator fixed in the housing, no electric feeder having slip-rings and brushes is necessary. Accordingly, the rotational power converter is made small in size and its reliability is improved.Type: GrantFiled: May 19, 2000Date of Patent: April 30, 2002Assignee: Denso CorporationInventor: Masahiro Seguchi
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Publication number: 20020047418Abstract: A compact and reliable structure of a multi-rotor synchronous machine which may be employed as a generator/motor for automotive vehicles is provided. The machine includes an outer rotor having permanent magnets, an inner rotor having permanent magnets disposed to be rotatable relative to the outer rotor, a stator core having armature coils interlinking with field magnetic fluxes produced by the outer and inner rotors, and a rotor-to-rotor relative rotation controlling mechanism. A relative angle between the outer and inner rotors is controlled within a given angular range by controlling the phase and quantity of current flowing through the armature coils to rotate the inner rotor relative to the outer rotor through the rotor-to-rotor relative rotation controlling mechanism, thereby changing the magnetic fluxes interlinking with the armature coils as needed.Type: ApplicationFiled: September 13, 2001Publication date: April 25, 2002Inventors: Masahiro Seguchi, Shigenori Yoneda, Yuichi Imani
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Patent number: 6018694Abstract: A gas-sparing vehicle is achieved by a control system for a hybrid vehicle equipped at least with: a hybrid engine which includes at least a first rotary electric unit for deciding the rpm of the engine and a second rotary electric unit for deciding the driving force of the vehicle and which has power converting means connected to the output shaft of the engine; and electricity storing means. In one embodiment, a hybrid controller 16 controls the drive of a first rotary electric unit 2000 according to a startup torque command value which is decided based on the rpm of an engine at the time of engine startup and which decreases as the rpm increases; it also determines that the complete explosion in an engine 1 has occurred when the startup torque command value falls below a predetermined complete explosion judgment value.Type: GrantFiled: March 27, 1998Date of Patent: January 25, 2000Assignee: Denso CorporationInventors: Tsuneyuki Egami, Hiroshi Fujita, Keiichiro Banzai, Takeshi Sawada, Hiroya Tsuji, Kazuyoshi Obayashi, Hiroaki Kajiura, Masahiro Seguchi, Toyoaki Kurita
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Patent number: 5917248Abstract: A T-S converter is composed of a first rotor which has a first control coil, a second rotor and a stator which has a second control coil. The second rotor has a first magnetic field member (such as permanent magnets) which supplies the first control coil with magnetic field and a second magnetic field member (such as permanent magnets) which supplies the second control coil with magnetic field. The first and second control coils are energized to drive the second rotor to rotate at a set speed with a set torque according to vehicle running condition. The first and the second control coil are also energized to generate battery charging current when the vehicle speed is decreased and the second rotor is driven by the vehicle wheels.Type: GrantFiled: April 25, 1997Date of Patent: June 29, 1999Assignee: Denso CorporationInventors: Masahiro Seguchi, Hiroaki Kajiura, Keiichiro Banzai, Shinji Kouda, Kazuyoshi Obayashi
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Patent number: 5744895Abstract: A T-S converter is composed of a first rotor which has a first control coil, a second rotor and a stator which has a second control coil. The second rotor has a first magnetic field member (such as laminated sheets of ferromagnetic material) which supplies the first control coil with magnetic field and a second magnetic field member (such as laminated sheets of ferromagnetic material) which supplies the second control coil with magnetic field. The first and second control coils are energized to drive the second rotor to rotate at a set speed with a set torque according to vehicle running condition. The first and the second control coil are also energized to generate battery charging current when the vehicle speed is decreased and the second rotor is driven by the vehicle wheels.Type: GrantFiled: July 3, 1996Date of Patent: April 28, 1998Assignee: Nippondenso Co., Ltd.Inventors: Masahiro Seguchi, Keiichiro Banzai, Hiroaki Kajiura, Akio Yasuda
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Patent number: D467261Type: GrantFiled: March 14, 2001Date of Patent: December 17, 2002Assignee: Omron CorporationInventors: Masahiro Seguchi, Heita Nada