Patents by Inventor Tomohiro Fukushima

Tomohiro Fukushima 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).

  • Patent number: 11005108
    Abstract: Disclosed are surface immobilized (electro)catalysts that may be prepared by a condensation reaction that generates an aromatic unit that is robust to acid and base and elevated temperatures. Among their many desirable characteristics, the catalysts are far less prone to the bimolecular deactivation pathways commonly observed for homogeneous catalysts, and may be used in solvents with a range of polarities and dielectric strengths. The catalysts are suitable for a wide array of thermal catalytic reactions (polymerization, oxidation, hydrogenation, cross-coupling etc.) and as anodes and/or cathodes in fuel cells, electrolyzers, and in batteries and supercapacitors.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: May 11, 2021
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Yogesh Surendranath, Tomohiro Fukushima, Matthew E. O'Reilly, Seokjoon Oh, Alexander T. Murray, Corey Jarin Kaminsky, Sterling Ben Chu, Megan N. Jackson
  • Patent number: 10183581
    Abstract: A control system for a vehicle drive motor includes a motor torque obtaining portion, a current distributing state obtaining portion obtaining a state of current distribution to coils of respective phases of a stator of the motor, a temperature sensor detecting temperature of a specific phase coil, a motor torque control portion updating other phase estimated temperatures by using the coil sensor temperature and an added-up value of a temperature rise per unit time of each of other phase coils at each time point, the motor torque control portion controlling the motor torque by using the other phase estimated temperatures, wherein the temperature rise per unit time of each of the other phase coils at each time point is determined by the motor torque control portion in accordance with a combination of the motor torque and the state of current distribution at each time point.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: January 22, 2019
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Tetsuro Ichikawa, Tomohiro Fukushima, Hideki Kakisako, Shota Hirose
  • Publication number: 20180079311
    Abstract: A control system for a vehicle drive motor includes a motor torque obtaining portion, a current distributing state obtaining portion obtaining a state of current distribution to coils of respective phases of a stator of the motor, a temperature sensor detecting temperature of a specific phase coil, a motor torque control portion updating other phase estimated temperatures by using the coil sensor temperature and an added-up value of a temperature rise per unit time of each of other phase coils at each time point, the motor torque control portion controlling the motor torque by using the other phase estimated temperatures, wherein the temperature rise per unit time of each of the other phase coils at each time point is determined by the motor torque control portion in accordance with a combination of the motor torque and the state of current distribution at each time point.
    Type: Application
    Filed: March 18, 2016
    Publication date: March 22, 2018
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Tetsuro ICHIKAWA, Tomohiro FUKUSHIMA, Hideki KAKISAKO, Shota HIROSE
  • Publication number: 20170047592
    Abstract: Disclosed are surface immobilized (electro)catalysts that may be prepared by a condensation reaction that generates an aromatic unit that is robust to acid and base and elevated temperatures. Among their many desirable characteristics, the catalysts are far less prone to the bimolecular deactivation pathways commonly observed for homogeneous catalysts, and may be used in solvents with a range of polarities and dielectric strengths. The catalysts are suitable for a wide array of thermal catalytic reactions (polymerization, oxidation, hydrogenation, cross-coupling etc.) and as anodes and/or cathodes in fuel cells, electrolyzers, and in batteries and supercapacitors.
    Type: Application
    Filed: August 15, 2016
    Publication date: February 16, 2017
    Inventors: Yogesh Surendranath, Tomohiro Fukushima, Matthew E. O'Reilly, Seokjoon Oh, Alexander T. Murray, Corey Jarin Kaminsky, Sterling Ben Chu, Megan N. Jackson
  • Patent number: 9325211
    Abstract: A wave winding coil for a rotary electrical machine includes a coil conductor including coil side portions and coil end portions, the coil conductor being wound to include a wave winding configuration, a relational expression expressing a total number of the coil side portions included in a phase coil is expressed by a mathematical expression 1 m×k=n×q×2p, and m refers to the number of the phase unit coils that are parallelly connected to each other, k refers to the number of the coil side portions that are serially connected to each other, q refers to the number of serially-connected-conductors per magnetic pole, the serially-connected-conductor belongs to one of the kinds of the coil side portions, 2p refers to the number of the magnetic pole, m refers to a common divisor between q×2p and n.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: April 26, 2016
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Masafumi Sakuma, Tomohiro Fukushima, Shuhei Yamashita
  • Patent number: 8258670
    Abstract: A motor includes a stator, a case and a supporting portion. The stator formed by laminating plural disc plates includes a yoke portion having a plurality of first and second portions alternately formed in a circumferential direction of the stator, and plural tooth portions respectively radially protruding from an inner circumferential surface the yoke portion at the second portion of the yoke portion towards an axial center of the stator. The case provided at an outer circumference of the stator includes a first communicating passage extending in an axial direction of the stator to be in communication with both axial ends of the stator and defined by an inner circumferential surface of the case. The supporting portion protrudes from an inner circumferential surface of the first communicating passage towards the stator and contacts an outer surface of the stator at one of the first portions of the stator.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: September 4, 2012
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Masafumi Sakuma, Tomohiro Fukushima, Masayuki Nishimura
  • Patent number: 8195348
    Abstract: Front left and right wheel units are driven by an engine and a motor generator. Rear left and right wheel units are independently driven by in-wheel motor type motor generators. The motor generator and the motor generator are configured to have different rated outputs, respectively, and be subjected to different speed reduction ratios, respectively, between the motor generators and their respectively associated drive wheel units, and thus have characteristics, respectively, in efficiency with respect to torque and vehicular speed, that exhibit high efficiency in mutually different output ranges, respectively. When a mileage oriented mode is selected as a traveling mode, an ECU determines how a drive torque should be allocated between the motor generators, as based on the motors' required drive torque and vehicular speed and on each motor generator's characteristic in efficiency, to maximize the motor generators' total efficiency.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: June 5, 2012
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha
    Inventors: Ryoji Mizutani, Michitaka Tsuchida, Yasuaki Tahara, Tomohiro Fukushima, Masafumi Sakuma
  • Patent number: 8188625
    Abstract: An oil cooling system for a motor includes a rotor, a stator core annularly positioned around the rotor, a plurality of coils annularly arranged and each wound around the stator core, and a plurality of oil discharging holes annularly arranged in a circumferential direction of the stator core, the oil discharging holes through which oil is discharged with pressure in an axial direction of the stator core to cool the coils.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: May 29, 2012
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventor: Tomohiro Fukushima
  • Patent number: 7958960
    Abstract: Right front wheel units (FL, FR) are driven independently by motor generators (MGL, MGR). A power control unit (1) is provided common to the motor generators (MGL, MGR) and integrally controls driving them. Each motor generator (MGL, MGR) and the power control unit (1) are selectively connected by switch circuits (SWL, SWR). The switch circuits (SWL, SWR) are switched by an ECU (3), as appropriate, in accordance with how the vehicle (100) is currently traveling (i.e., a driving force that the vehicle is required to output, and a direction in which the vehicle is traveling). In other words, the vehicle (100) can selectively implement traveling with the left and right front wheel units (FL, FR) both serving as driving wheel units, and traveling with only one of the left and right front wheel units (FL, FR) serving as a driving wheel unit, depending on how the vehicle is currently traveling.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: June 14, 2011
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha
    Inventors: Ryoji Mizutani, Michitaka Tsuchida, Tomohiro Fukushima, Masafumi Sakuma
  • Publication number: 20100052441
    Abstract: An oil cooling system for a motor includes a rotor, a stator core annularly positioned around the rotor, a plurality of coils annularly arranged and each wound around the stator core, and a plurality of oil discharging holes annularly arranged in a circumferential direction of the stator core, the oil discharging holes through which oil is discharged with pressure in an axial direction of the stator core to cool the coils.
    Type: Application
    Filed: August 20, 2009
    Publication date: March 4, 2010
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventor: Tomohiro Fukushima
  • Publication number: 20100004090
    Abstract: Right front wheel units (FL, FR) are driven independently by motor generators (MGL, MGR). A power control unit (1) is provided common to the motor generators (MGL, MGR) and integrally controls driving them. Each motor generator (MGL, MGR) and the power control unit (1) are selectively connected by switch circuits (SWL, SWR). The switch circuits (SWL, SWR) are switched by an ECU (3), as appropriate, in accordance with how the vehicle (100) is currently traveling (i.e., a driving force that the vehicle is required to output, and a direction in which the vehicle is traveling). In other words, the vehicle (100) can selectively implement traveling with the left and right front wheel units (FL, FR) both serving as driving wheel units, and traveling with only one of the left and right front wheel units (FL, FR) serving as a driving wheel unit, depending on how the vehicle is currently traveling.
    Type: Application
    Filed: November 29, 2006
    Publication date: January 7, 2010
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ryoji Mizutani, Michitaka Tsuchida, Tomohiro Fukushima, Masafumi Sakuma
  • Publication number: 20090108700
    Abstract: A motor includes a stator, a case and a supporting portion. The stator formed by laminating plural disc plates includes a yoke portion having a plurality of first and second portions alternately formed in a circumferential direction of the stator, and plural tooth portions respectively radially protruding from an inner circumferential surface the yoke portion at the second portion of the yoke portion towards an axial center of the stator. The case provided at an outer circumference of the stator includes a first communicating passage extending in an axial direction of the stator to be in communication with both axial ends of the stator and defined by an inner circumferential surface of the case. The supporting portion protrudes from an inner circumferential surface of the first communicating passage towards the stator and contacts an outer surface of the stator at one of the first portions of the stator.
    Type: Application
    Filed: October 31, 2008
    Publication date: April 30, 2009
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Masafumi Sakuma, Tomohiro Fukushima, Masayuki Nishimura
  • Publication number: 20090088914
    Abstract: Front left and right wheel units (FL, FR) are driven by an engine (ENG) and a motor generator (MG2). Rear left and right wheel units (RL, RR) are independently driven by in-wheel motor type motor generators (MGR, MGL). The motor generator (MG2) and the motor generator (MGR, MGL) are configured to have different rated outputs, respectively, and be subjected to different speed reduction ratios, respectively, between the motor generators and their respectively associated drive wheel units, and thus have characteristics, respectively, in efficiency with respect to torque and vehicular speed, that exhibit high efficiency in mutually different output ranges, respectively. When a mileage oriented mode is selected as a traveling mode, an ECU (30) determines how a drive torque should be allocated between the motor generators (MG2, MGR, MGL), as based on the motors' required drive torque and vehicular speed and on each motor generator's characteristic in efficiency, to maximize the motor generators' total efficiency.
    Type: Application
    Filed: May 18, 2007
    Publication date: April 2, 2009
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ryoji Mizutani, Michitaka Tsuchida, Yasuaki Tahara, Tomohiro Fukushima, Masafumi Sakuma
  • Publication number: 20080024019
    Abstract: A motor includes a stator having a stator core wound by a coil and a vibration-absorbing member provided between the coil and the stator core.
    Type: Application
    Filed: July 25, 2007
    Publication date: January 31, 2008
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Masafumi Sakuma, Katsuhiro Tsuchiya, Tomohiro Fukushima, Akinori Hoshino, Tetsuya Morita
  • Patent number: 7279821
    Abstract: A motor includes a rotor, a rotor core included in the rotor, the rotor core being configured to be embedded, therein, with at least one first magnet, a pair of end plates, one of the pair of end plates being positioned at an axial end of the motor, an other one of the pair of end plates being positioned at an other axial end of the motor, and the pair of end plates holding the rotor core at axial ends of the rotor core, and at least one second magnet embedded in the pair of end plates and supplying magnetic fields in an axial direction of the motor.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: October 9, 2007
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Tomohiro Fukushima, Masafumi Sakuma
  • Publication number: 20060145561
    Abstract: To provide a three-phase synchronous reluctance motor which allows its stator to be formed compact by means of reduction in the width of a part of a back yoke portion of a stator while avoiding excessive increase in the magnetic resistance of the magnetic path of the back yoke portion. The includes a rotor (200) and a stator (100) having a plurality of teeth (103) formed in an inner face thereof along a peripheral direction and in opposition to the rotor (200), six of the teeth being in opposition to one of a plurality of rotor magnetic poles provided in the rotor, the stator having stator windings by a coil pitch corresponding to five teeth of the six teeth.
    Type: Application
    Filed: June 18, 2004
    Publication date: July 6, 2006
    Inventors: Masafumi Sakuma, Tomohiro Fukushima
  • Patent number: 7015614
    Abstract: In a synchronous reluctance motor having a rotor having a plurality of pairs of an outer side slot formed at an outer periphery side and an inner side slot formed at inner side of the rotor. The distance between the outer periphery of the rotor and the outer side slot is determined to be the width of the stator magnetic pole portion of the stator multiplied by 0.7 to 1.3. A first total magnetic flux amount of an outer side permanent magnet disposed in the outer side slot is determined to be larger than or equal to a second total magnetic flux amount of an inner side permanent magnet disposed in the inner side slot.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: March 21, 2006
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Masafumi Sakuma, Tomohiro Fukushima
  • Publication number: 20050285468
    Abstract: A motor includes a rotor, a rotor core included in the rotor, the rotor core being configured to be embedded, therein, with at least one first magnet, a pair of end plates, one of the pair of end plates being positioned at an axial end of the motor, an other one of the pair of end plates being positioned at an other axial end of the motor, and the pair of end plates holding the rotor core at axial ends of the rotor core, and at least one second magnet embedded in the pair of end plates and supplying magnetic fields in an axial direction of the motor.
    Type: Application
    Filed: June 27, 2005
    Publication date: December 29, 2005
    Inventors: Tomohiro Fukushima, Masafumi Sakuma
  • Patent number: 6961683
    Abstract: Flexural rigidity E of a target wire harness (to be referred to as a WH hereinafter) is calculated by a predetermined bi-quadratic function associated with a curvature ? on the basis of a diameter ? of the WH, and the wiring shape of the WH which satisfy fixing positions is calculated on the basis of torsional rigidity C and the weight per unit length which are supplied from a storage device in accordance with the diameter ? of the target WH (S4-S5). The bi-quadratic function is set such that the calculated flexural rigidity E decreases as the curvature ? of the WH increases.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: November 1, 2005
    Assignee: Mazda Motor Corporation
    Inventors: Nobuhiro Kodama, Takashi Yoshiyuki, Seiichi Hirano, Tomohiro Fukushima
  • Publication number: 20050110355
    Abstract: In a synchronous reluctance motor having a rotor having a plurality of pairs of an outer side slot formed at an outer periphery side and an inner side slot formed at inner side of the rotor. The distance between the outer periphery of the rotor and the outer side slot is determined to be the width of the stator magnetic pole portion of the stator multiplied by 0.7 to 1.3. A first total magnetic flux amount of an outer side permanent magnet disposed in the outer side slot is determined to be larger than or equal to a second total magnetic flux amount of an inner side permanent magnet disposed in the inner side slot.
    Type: Application
    Filed: September 29, 2004
    Publication date: May 26, 2005
    Inventors: Masafumi Sakuma, Tomohiro Fukushima