Patents by Inventor Yoshinobu Utsumi
Yoshinobu Utsumi 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: 20070188043Abstract: Reinforcing body retainers are formed on an inner peripheral surface near a tip and near a root of first and second claw-shaped magnetic poles. Reinforcing bodies have a trapezoidal base portion and a pair of wing portions formed on two sides of the base portion, and slits are formed completely across a width direction of the base portion at a central portion in a height direction of the trapezoidal shape of the base portion so as to be offset toward a base of the trapezoidal shape. The reinforcing bodies are disposed so as to contact the inner peripheral surfaces of the first and second claw-shaped magnetic poles with a magnet housed and supported in each of the wing portions, and a D ring is fitted into the slits of the reinforcing bodies.Type: ApplicationFiled: April 18, 2007Publication date: August 16, 2007Inventors: Yoshinobu Utsumi, Yoshihito Asao
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Publication number: 20070182275Abstract: Reinforcing body retainers are formed on an inner peripheral surface near a tip and near a root of first and second claw-shaped magnetic poles. Reinforcing bodies have a trapezoidal base portion and a pair of wing portions formed on two sides of the base portion, and slits are formed completely across a width direction of the base portion at a central portion in a height direction of the trapezoidal shape of the base portion so as to be offset toward a base of the trapezoidal shape. The reinforcing bodies are disposed so as to contact the inner peripheral surfaces of the first and second claw-shaped magnetic poles with a magnet housed and supported in each of the wing portions, and a D ring is fitted into the slits of the reinforcing bodies.Type: ApplicationFiled: April 18, 2007Publication date: August 9, 2007Inventors: Yoshinobu Utsumi, Yoshihito Asao
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Publication number: 20060238040Abstract: The rotating electric machine has a stator coil wound around a stator, a magnetic pole and a signal rotor fixed to a rotor, and a detection stator, disposed opposite to the signal rotor, for detecting the rotational position of the rotor, characterized by further comprising an adjuster for adjusting the position of the signal rotor or the detection stator by supplying a direct current to a predetermined phase of the stator coil and then a direct current to a different phase from the predetermined phase to rotate the rotor by a predetermined angle or more and constrain the rotor.Type: ApplicationFiled: June 26, 2006Publication date: October 26, 2006Inventors: Yoshinobu Utsumi, Shinji Nishimura, Yoshihito Asao
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Patent number: 7122925Abstract: An accommodating space is formed on an end surface at a first axial end of a rear bracket so as to envelop an end portion region of a shaft, and a brush holder and a sensor unit are disposed in the accommodating space. A brush connector unit and a sensor connector unit are disposed so as to project out of the accommodating space, and electrical connection between brushes and the brush connector unit and signal connection between the sensor unit and the sensor connector unit are performed inside the accommodating space.Type: GrantFiled: November 19, 2004Date of Patent: October 17, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yoshinobu Utsumi, Hideki Morikaku, Yoshihito Asao
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Patent number: 7095145Abstract: The rotating electric machine has a stator coil wound around a stator, a magnetic pole and a signal rotor fixed to a rotor, and a detection stator, disposed opposite to the signal rotor, for detecting the rotational position of the rotor, characterized by further comprising an adjuster for adjusting the position of the signal rotor or the detection stator by supplying a direct current to a predetermined phase of the stator coil and then a direct current to a different phase from the predetermined phase to rotate the rotor by a predetermined angle or more and constrain the rotor.Type: GrantFiled: July 17, 2003Date of Patent: August 22, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yoshinobu Utsumi, Shinji Nishimura, Yoshihito Asao
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Publication number: 20060113949Abstract: To obtain an adjustment method of rotor position detection of a synchronous motor with excellent productivity. An adjustment method of rotor position detection of a synchronous motor, wherein a synchronous motor having a stator wound around a stator coil and a rotor provided with magnetic poles, and a rotational position detector having a sensor rotor fixed to the rotor and a sensor stator disposed opposite to the sensor rotor for detecting a rotational position of the rotor are provided, and wherein an amount of deviation between the rotational position of the synchronous motor determined from an output of the rotational position detector and an actual rotational position of the synchronous motor is adjusted, the method comprising: a step of detecting the amount of deviation during rotation of the synchronous motor; and a step of mechanically adjusting a relative position between the rotational position detector and the synchronous motor based on a detected value of the amount of deviation, is provided.Type: ApplicationFiled: January 27, 2005Publication date: June 1, 2006Inventors: Shinji Nishimura, Yoshinobu Utsumi, Yoshihito Asao
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Publication number: 20050280320Abstract: To obtain a resolver in which the winding portion is prevented from breaking by corrosion caused by water.Type: ApplicationFiled: April 8, 2005Publication date: December 22, 2005Inventors: Yoshinobu Utsumi, Shinji Nishimura
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Publication number: 20050116582Abstract: Reinforcing body retainers are formed on an inner peripheral surface near a tip and near a root of first and second claw-shaped magnetic poles. Reinforcing bodies have a trapezoidal base portion and a pair of wing portions formed on two sides of the base portion, and slits are formed completely across a width direction of the base portion at a central portion in a height direction of the trapezoidal shape of the base portion so as to be offset toward a base of the trapezoidal shape. The reinforcing bodies are disposed so as to contact the inner peripheral surfaces of the first and second claw-shaped magnetic poles with a magnet housed and supported in each of the wing portions, and a D ring is fitted into the slits of the reinforcing bodies.Type: ApplicationFiled: December 1, 2004Publication date: June 2, 2005Inventors: Yoshinobu Utsumi, Yoshihito Asao
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Publication number: 20050110352Abstract: An accommodating space is formed on an end surface at a first axial end of a rear bracket so as to envelop an end portion region of a shaft, and a brush holder and a sensor unit are disposed in the accommodating space. A brush connector unit and a sensor connector unit are disposed so as to project out of the accommodating space, and electrical connection between brushes and the brush connector unit and signal connection between the sensor unit and the sensor connector unit are performed inside the accommodating space.Type: ApplicationFiled: November 19, 2004Publication date: May 26, 2005Inventors: Yoshinobu Utsumi, Hideki Morikaku, Yoshihito Asao
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Publication number: 20050077789Abstract: An AC dynamo electric machine for a motor vehicle includes an AC dynamo machine body 100 composed of a rotor 10 constituted by a first rotatable shaft 12 supported rotatably by a pair of bearings 16, 17, a rotor core 8 fixedly secured to the first rotatable shaft 12 and a field winding 9 wound on the rotor core 8, a stator 3 composed of a stator core 1 disposed in opposition to the rotor 10 and a polyphase stator winding 2 wound on the stator core 1 and a bracket 80 supporting the pair of bearings 16, 17 and the stator 3, and a rotational position detector for the control purpose composed of a second rotatable shaft 30 coupled to the first rotatable shaft 12 through a large magnetic reluctance portion 32, 33, a second rotor 21 fixedly secured to the second rotatable shaft 30 and a second stator winding 22a for generating an output voltage based on rotation of the second rotor 21.Type: ApplicationFiled: March 4, 2002Publication date: April 14, 2005Inventors: Katsuhiko Kusumoto, Yoshinobu Utsumi
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Patent number: 6838805Abstract: A rotary electric machine for being mounted on an internal combustion engine of a vehicle or the like. The rotary electric machine includes a rotation shaft rotatably supported by a bracket; a rotor fixed to the rotation shaft; a stator which has a stator core disposed opposite to the outer periphery of the rotor and a stator winding mounted onto the stator core, and which is supported by the bracket; and a pulley engaged with an end of the rotation shaft to rotate integrally with the rotation shaft. The pulley and the rotation shaft are mutually engaged to form an engagement portion. The engagement portion includes a regulation means for regulating-sliding movement between the rotation shaft and the pulley in their peripheral direction.Type: GrantFiled: August 14, 2002Date of Patent: January 4, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Atsushi Oohashi, Katsuhiko Kusumoto, Hideki Morikaku, Yoshinobu Utsumi
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Publication number: 20040090132Abstract: An electric rotating machine for a vehicle capable of reducing influence of leakage flux on a turning angle detector as much as possible and detecting a turning angle more accurately is provided. The electric rotating machine for a vehicle includes: a rotor core 12 that is fitted to a rotary shaft 7; a stator core 24 that is concentric with the rotor core 12 and disposed on the outside of the rotor core 12; and a resolver 31 acting as a turning angle detector that is disposed on one shaft end of the rotary shaft 7; in which the rotary shaft 7 itself is constituted to be magnetic flux interrupting means made of a non-magnetic material.Type: ApplicationFiled: September 22, 2003Publication date: May 13, 2004Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Yoshinobu Utsumi, Hideki Morikaku, Yoshihito Asao
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Publication number: 20040027015Abstract: The rotating electric machine has a stator coil wound around a stator, a magnetic pole and a signal rotor fixed to a rotor, and a detection stator, disposed opposite to the signal rotor, for detecting the rotational position of the rotor, characterized by further comprising an adjuster for adjusting the position of the signal rotor or the detection stator by supplying a direct current to a predetermined phase of the stator coil and then a direct current to a different phase from the predetermined phase to rotate the rotor by a predetermined angle or more and constrain the rotor.Type: ApplicationFiled: July 17, 2003Publication date: February 12, 2004Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Yoshinobu Utsumi, Shinji Nishimura, Yoshihito Asao
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Patent number: 6674192Abstract: Slip rings are fixed to an outer circumference of a shaft axially inside a rear-end bearing, brushes are disposed so as to contact outer circumferential surfaces of the slip rings, a sensor rotor of a rotation detecting apparatus is fixed to an end portion of the shaft projecting axially outside the rear-end bearing, and a sensor unit is disposed in close proximity to the sensor rotor.Type: GrantFiled: August 12, 2002Date of Patent: January 6, 2004Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hideki Morikaku, Yoshinobu Utsumi, Katsuhiko Kusumoto, Atsushi Oohashi
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Patent number: 6609992Abstract: An automotive alternator includes: a stator core 1 having a stator winding 2; front and rear brackets 3 and 4 holding the stator core 1; a rotor core 5 attached to a rotation shaft 7 rotatably mounted on the brackets; a one-way clutch 13 having a driving member 16 and a driven member 14, the driven member 14 fixed to the rotation shaft 7; an overdrive planetary gear mechanism 17 having a sun gear 22, a planet gear 21, and an outer ring gear 24, the sun gear 22 fixed to the rotation shaft, the planet gear 21 attached to the driving member 16, the outer ring gear 24 rotatably supported; an input shaft 19 to which an end of the support shaft 20 of the planet gear 21 is fixed; and an electromagnetic brake 26 blocking rotation of the outer ring gear 24 by energization.Type: GrantFiled: August 28, 2001Date of Patent: August 26, 2003Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Katsuhiko Kusumoto, Tatsuhiko Mizutani, Yoshinobu Utsumi
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Publication number: 20030048035Abstract: A rotary electric machine for being mounted on an internal combustion engine of a vehicle or the like. The rotary electric machine includes a rotation shaft rotatably supported by a bracket; a rotor fixed to the rotation shaft; a stator which has a stator core disposed opposite to the outer periphery of the rotor and a stator winding mounted onto the stator core, and which is supported by the bracket; and a pulley engaged with an end of the rotation shaft to rotate integrally with the rotation shaft. The pulley and the rotation shaft are mutually engaged to form an engagement portion. The engagement portion includes a regulation means for regulating-sliding movement between the rotation shaft and the pulley in their peripheral direction.Type: ApplicationFiled: August 14, 2002Publication date: March 13, 2003Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Atsushi Oohashi, Katsuhiko Kusumoto, Hideki Morikaku, Yoshinobu Utsumi
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Publication number: 20030042813Abstract: Slip rings are fixed to an outer circumference of a shaft axially inside a rear-end bearing, brushes are disposed so as to contact outer circumferential surfaces of the slip rings, a sensor rotor of a rotation detecting apparatus is fixed to an end portion of the shaft projecting axially outside the rear-end bearing, and a sensor unit is disposed in close proximity to the sensor rotor.Type: ApplicationFiled: August 12, 2002Publication date: March 6, 2003Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Hideki Morikaku, Yoshinobu Utsumi, Katsuhiko Kusumoto, Atsushi Oohashi
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Publication number: 20030034703Abstract: A vehicular starting and charging rotary electric machine includes a rotor, a stator, brackets, a brush, and a rotation detection sensor. The rotor has a field winding. The stator has a stator winding. The brackets supports the rotor and the stator. One end of the brush is brought into contact with the rotor to supply field current to the field winding of the rotor. The rotation detecting sensor is arranged coaxially with a rotating shaft of the rotor, for detecting a state of the rotor and functioning as a motor or a generator. The magnetic pole position detecting sensor is integrally fixed to the bracket.Type: ApplicationFiled: August 19, 2002Publication date: February 20, 2003Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Atsushi Oohashi, Katsuhiko Kusumoto, Hideki Morikaku, Yoshinobu Utsumi
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Publication number: 20020049112Abstract: An automotive alternator includes: a stator core 1 having a stator winding 3; front and rear brackets 3 and 4 holding the stator core 1; a rotor core 5 attached to a rotation shaft 7 rotatably mounted on the brackets; a one-way clutch 13 having a driving member 16 and a driven member 14, the driven member 14 fixed to the rotation shaft 7; an overdrive planetary gear mechanism 17 having a sun gear 22, a planet gear 21, and an outer ring gear 24, the sun gear 22 fixed to the rotation shaft, the planet gear 21 attached to the driving member 16, the outer ring gear 24 rotatably supported; an input shaft 19 to which an end of the support shaft 20 of the planet gear 21 is fixed; and an electromagnetic brake 26 blocking rotation of the outer ring gear 24 by enegization.Type: ApplicationFiled: August 28, 2001Publication date: April 25, 2002Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Katsuhiko Kusumoto, Tatsuhiko Mizutani, Yoshinobu Utsumi
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Patent number: 6333577Abstract: An automotive AC dynamo-electric machine is capable of providing a sufficient rotational output for starting an engine by running a rotor at high speed in a motor operation mode for starting the engine, thus obviating the need for increasing a size thereof. In the motor operation mode, an electromagnetic clutch follower connects to an electromagnetic clutch main body and also engages a cylindrical member to brake the cylindrical member. An internal gear portion provides a fixed element, and torque of a rotor is transmitted to a power transmission device via a rotor shaft, a sun gear, a planetary gear, and a carrier.Type: GrantFiled: October 18, 2000Date of Patent: December 25, 2001Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Katsuhiko Kusumoto, Tsunenobu Yamamoto, Keiichi Konishi, Yoshinobu Utsumi