Patents by Inventor Masashi Yamasaki

Masashi Yamasaki 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: 9692350
    Abstract: An ECU, which acts as a “electrical rotating machine controller”, controls driving of a motor unit having two winding sets. In the ECU, components having different heat dissipation properties are used as switching elements between two systems of inverters (electric power conversion circuit). For example, “component X” is used as switching elements of a first inverter acting as a “normal circuit”, and “component Y” which has superior heat conductivity is used as switching elements, different from the switching elements of the first inverter, of a second inverter acting as a “particular circuit”. As a result, the switching element (component Y) of the second inverter is more likely to have a longer lifespan than the switching element (component X) of the first inverter. Accordingly, the likelihood of both systems failing at the same time may be reduced.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: June 27, 2017
    Assignee: DENSO CORPORATION
    Inventor: Masashi Yamasaki
  • Publication number: 20170066737
    Abstract: The present invention provides compounds having a Toll-like receptor 4 (TLR4) signaling inhibitory action useful as preventive and therapeutic drugs of inflammatory disease and/or central nervous system disease or diseases such as chemotherapy-induced peripheral neuropathy (CIPN), chemotherapy-induced neuropathic pain (CINP), liver injury, ischemia-reperfusion injury (IRI) and the like. The present invention relates to a compound represented by formula (I) and a salt thereof: wherein, each symbol is explained in greater detail in the specification.
    Type: Application
    Filed: November 21, 2016
    Publication date: March 9, 2017
    Applicant: Takeda Pharmaceutical Company Limited
    Inventors: Toshitake Kobayashi, Morihisa SAITOH, Yasufumi WADA, Hiroshi NARA, Nobuyuki NEGORO, Taisuke KATOH, Masashi YAMASAKI, Takahiro TANAKA, Naomi KITAMOTO
  • Publication number: 20170005539
    Abstract: A motor unit is received in a first space of a motor case. A frame contacts an inner peripheral wall of the motor case and is fixed in an inside of the motor case. A cutout, which is formed in at least one of the motor case and the frame, forms a seal groove, which extends in a circumferential direction between the motor case and the frame. A cover covers the seal groove and forms a second space in an inside of the cover. A seal material is received in the seal groove and limits intrusion of liquid, such as water, from an outside of the motor case and the cover into the first space and the second space. In this way, intrusion of the liquid into the first space and the second space can be limited with the seal material provided in the single seal groove.
    Type: Application
    Filed: June 28, 2016
    Publication date: January 5, 2017
    Inventor: Masashi Yamasaki
  • Patent number: 9521775
    Abstract: A drive apparatus includes a power module, a connector and a heat sink. The connector is used for electric connection to an external side and has a flange, which is formed on its peripheral wall. The heat sink is formed to have a module holding part for holding the power module and a fitting hole for fitting with the flange and has a connector holding part for holding a connector. The flange is formed along a first surface, which faces the connector holding part of the peripheral wall, and side surfaces, which are formed on both sides of the first surface. Thus, water droplets are prevented from entering into a control unit through a clearance between the connector and the heat sink without adding other members such as a water preventing cover.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: December 13, 2016
    Assignee: DENSO CORPORATION
    Inventor: Masashi Yamasaki
  • Publication number: 20160326133
    Abstract: The present invention provides compounds having a Toll-like receptor 4 (TLR4) signaling inhibitory action useful as preventive and therapeutic drugs of inflammatory disease and/or central nervous system disease or diseases such as chemotherapy-induced peripheral neuropathy (CIPN), chemotherapy-induced neuropathic pain (CINP), liver injury, ischemia-reperfusion injury (IRI) and the like. The present invention relates to a compound represented by formula (I) and a salt thereof: (wherein, each symbol is explained in greater detail in the specification).
    Type: Application
    Filed: June 7, 2016
    Publication date: November 10, 2016
    Applicant: Takeda Pharmaceutical Company Limited
    Inventors: Toshitake Kobayashi, Morihisa SAITOH, Yasufumi WADA, Hiroshi NARA, Nobuyuki NEGORO, Taisuke KATOH, Masashi YAMASAKI, Takahiro TANAKA, Naomi KITAMOTO
  • Publication number: 20160326102
    Abstract: The present invention provides compounds having a Toll-like receptor 4 (TLR4) signaling inhibitory action useful as preventive and therapeutic drugs of inflammatory disease and/or central nervous system disease or diseases such as chemotherapy-induced peripheral neuropathy (CIPN), chemotherapy-induced neuropathic pain (CINP), liver injury, ischemia-reperfusion injury (IRI) and the like. The present invention relates to a compound represented by formula (I) and a salt thereof: (wherein, each symbol is explained in greater detail in the specification).
    Type: Application
    Filed: May 6, 2016
    Publication date: November 10, 2016
    Applicant: Takeda Pharmaceutical Company Limited
    Inventors: Toshitake Kobayashi, Morihisa SAITOH, Yasufumi WADA, Hiroshi NARA, Nobuyuki NEGORO, Taisuke KATOH, Masashi YAMASAKI, Takahiro TANAKA, Naomi KITAMOTO
  • Patent number: 9479025
    Abstract: A drive device includes a rotating electric machine, a substrate, a first drive element, a second drive element, a first extension line, and a second extension line. The rotating electric machine including a stator with a first winding group and a second winding group wound on the stator in at least three phases. The first extension line and the first drive element, as well as the second extension line and the second drive element have respectively reversed phase orders in an arrangement of the phase orders from an end close to a reference position toward an other end of the arrangement. In such manner, variation of wiring lengths from an electric power supply region among different phases is reduced.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: October 25, 2016
    Assignee: DENSO CORPORATION
    Inventors: Hiroyuki Kawata, Masashi Yamasaki, Takeshi Sawada
  • Publication number: 20160297470
    Abstract: A drive device of an electric power steering apparatus includes a motor housing fixed to a gear housing, a stator, which is received in an inside of the motor housing, a rotor, which is rotatably placed on an inner side of the stator, and a shaft, which is rotated integrally with the rotor. The motor housing includes an engaging portion. The engaging portion has a thread, which is coaxial with a rotational axis of the shaft and is threadably engaged with the gear housing.
    Type: Application
    Filed: April 1, 2016
    Publication date: October 13, 2016
    Inventor: Masashi Yamasaki
  • Patent number: 9461522
    Abstract: A drive unit that includes a rotating electric machine having a stator with winding wound on the stator and with a shaft rotating within the stator, and a rotor rotatable relative to the stator. The drive unit also includes a controller holding member disposed on one end of the rotating electric machine, and a controller having a substrate fixed to the controller holding member, a heat generation element mounted on a heat generation element mounting surface. The drive unit further includes a power supply connector connecting the substrate and a power supply, and a ground line coupled to a ground terminal of the power supply providing a conductive connection to the controller holding member via the substrate and the power supply connector. With this structure, the drive unit's common mode noise may be reduced.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: October 4, 2016
    Assignee: DENSO CORPORATION
    Inventors: Masashi Yamasaki, Takeshi Sawada
  • Patent number: 9457835
    Abstract: A drive unit includes a rotating electric machine, a frame member, and a controller. The rotating electric machine has a stator that has a winding wound on the stator, a rotor disposed relative to the stator, and a shaft rotating together with the rotor. The frame member is disposed on one axial end of the rotating electric machine. The controller includes a substrate attached on one surface of the frame member facing away from the rotating electric machine, a heat generation element disposed on a heat generation element mounting surface of the substrate, the heat generation element mounting surface facing the frame member, and an electronic component disposed on an electronic component mounting surface of the substrate.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: October 4, 2016
    Assignee: DENSO CORPORATION
    Inventors: Masashi Yamasaki, Takeshi Sawada
  • Publication number: 20160204670
    Abstract: A drive device includes a motor, a substrate arranged perpendicular to a motor shaft on one axial end of the motor and having a conductive connection portion, a frame body reserving a space on a substrate side, a frame member having a substrate pedestal for fixing the substrate, a cover member covering an opposite surface of the substrate relative to the frame member, and a connector having a connector terminal that extends along the axial direction and is press-fitted to the connection portion of the substrate. When the connector terminal of the connector is press-fitted to the substrate and the cover member is disposed at the same time, the number of work steps in an assembly procedure of the drive device is reduced.
    Type: Application
    Filed: January 5, 2016
    Publication date: July 14, 2016
    Inventor: Masashi Yamasaki
  • Publication number: 20160181883
    Abstract: A drive device includes a motor, having a stator on which a winding wire group is wound, a rotor disposed relative to the stator, and a shaft rotating in one body with the rotor are included, a controller disposed on one axial end of the motor and having a substrate on which electronic components for controlling a power supply to the winding wire group are implemented, a frame member facing the substrate and having a substrate supporter that supports the substrate in a contacting manner, a boss protruding from the frame member toward the substrate, and an engager fixedly disposed on the substrate and having elastically-deformable multiple claws that engagingly hold the boss in a binding manner. This arrangement reduces the volume of the drive device.
    Type: Application
    Filed: December 16, 2015
    Publication date: June 23, 2016
    Inventors: Masashi Yamasaki, Hideki Kabune
  • Publication number: 20160181885
    Abstract: A drive device includes a control unit with a substrate. The control unit is disposed on an opposite side of a motor relative to an output shaft of the motor. The substrate has electronic components mounted on the substrate. A motor line connects the substrate and a winding. A frame member bears the surface-mount electronic components on a first surface of the substrate. A bearing holder holds a bearing that bears a shaft. A motor line takeout part allows the motor line to extend toward the control unit. A partition wall separates the shaft and the control unit at a radial inside position of the motor line takeout part. Such a structure prevents foreign matter from intruding into a control unit accommodating space.
    Type: Application
    Filed: December 16, 2015
    Publication date: June 23, 2016
    Inventor: Masashi Yamasaki
  • Patent number: 9359004
    Abstract: A driver unit has a rotating electric machine and a frame member that is disposed on one axial end of the rotating electric machine. A substrate is fixed onto one surface of the frame member which faces away from the rotating electric machine. Switching elements constituting inverters for switching power supply to winding groups are mounted on a first surface for enabling heat dissipation toward the frame member. An Integrated Circuit (IC) is mounted on the first surface for enabling heat dissipation toward the frame member. An electronic component is mounted on a second surface at an overlapping position that at least partially overlaps a mounting position of the IC.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: June 7, 2016
    Assignee: DENSO CORPORATION
    Inventors: Hiroyuki Kawata, Masashi Yamasaki
  • Publication number: 20160094106
    Abstract: A drive apparatus includes a controller, which has a circuit board and a plurality of connection terminals, and an electric motor, which includes a plurality of winding sets and a plurality of motor lines. Each of the winding sets includes a plurality of windings. Each motor lines has an insertion length that is a length of the motor line measured from a contact start part of the motor line, which first contacts a corresponding one of the connection terminals at a time of press fitting the motor line into the corresponding connection terminal, to a contacting part of the motor line, which is in contact with the corresponding connection terminal after the press fitting of the motor line into the corresponding connection terminal. The insertion lengths of the motor lines are grouped into at least two groups.
    Type: Application
    Filed: September 22, 2015
    Publication date: March 31, 2016
    Inventor: Masashi Yamasaki
  • Publication number: 20160094104
    Abstract: In a drive apparatus, a motor unit is received in an inside of a tubular section of a motor case, and a bottom plate section is fixed to a gear box. A closure is fitted to an inner wall of the tubular section on an inner side of an opening edge part of the motor case. A control device cover is fixed to an end part of the motor case, which is opposite from the gear box, to cover a control device. An O-ring fluid-tightly seals between the motor case and the gear box, and a bonding agent fluid-tightly seals between the control device cover and the motor case.
    Type: Application
    Filed: September 22, 2015
    Publication date: March 31, 2016
    Inventor: Masashi Yamasaki
  • Publication number: 20160094175
    Abstract: An ECU, which acts as a “electrical rotating machine controller”, controls driving of a motor unit having two winding sets. In the ECU, components having different heat dissipation properties are used as switching elements between two systems of inverters (electric power conversion circuit). For example, “component X” is used as switching elements of a first inverter acting as a “normal circuit”, and “component Y” which has superior heat conductivity is used as switching elements, different from the switching elements of the first inverter, of a second inverter acting as a “particular circuit”. As a result, the switching element (component Y) of the second inverter is more likely to have a longer lifespan than the switching element (component X) of the first inverter. Accordingly, the likelihood of both systems failing at the same time may be reduced.
    Type: Application
    Filed: September 28, 2015
    Publication date: March 31, 2016
    Inventor: Masashi Yamasaki
  • Patent number: 9271422
    Abstract: A drive apparatus includes a power module, a connector and a heat sink. The connector is used for electric connection to an external side and has a flange, which is formed on its peripheral wall. The heat sink is formed to have a module holding part for holding the power module and a fitting hole for fitting with the flange and has a connector holding part for holding a connector. The flange is formed along a first surface, which faces the connector holding part of the peripheral wall, and side surfaces, which are formed on both sides of the first surface. Thus, water droplets are prevented from entering into a control unit through a clearance between the connector and the heat sink without adding other members such as a water preventing cover.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: February 23, 2016
    Assignee: DENSO CORPORATION
    Inventor: Masashi Yamasaki
  • Publication number: 20160036288
    Abstract: A drive unit that includes a rotating electric machine having a stator with winding wound on the stator and with a shaft rotating within the stator, and a rotor rotatable relative to the stator. The drive unit also includes a controller holding member disposed on one end of the rotating electric machine, and a controller having a substrate fixed to the controller holding member, a heat generation element mounted on a heat generation element mounting surface. The drive unit further includes a power supply connector connecting the substrate and a power supply, and a ground line coupled to a ground terminal of the power supply providing a conductive connection to the controller holding member via the substrate and the power supply connector. With this structure, the drive unit's common mode noise may be reduced.
    Type: Application
    Filed: July 29, 2015
    Publication date: February 4, 2016
    Inventors: Masashi Yamasaki, Takeshi Sawada
  • Publication number: 20160036305
    Abstract: A driver unit has a rotating electric machine and a frame member that is disposed on one axial end of the rotating electric machine. A substrate is fixed onto one surface of the frame member which faces away from the rotating electric machine. Switching elements constituting inverters for switching power supply to winding groups are mounted on a first surface for enabling heat dissipation toward the frame member. An Integrated Circuit (IC) is mounted on the first surface for enabling heat dissipation toward the frame member. An electronic component is mounted on a second surface at an overlapping position that at least partially overlaps a mounting position of the IC.
    Type: Application
    Filed: July 29, 2015
    Publication date: February 4, 2016
    Inventors: Hiroyuki Kawata, Masashi Yamasaki