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).
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Patent number: 9692350Abstract: 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: GrantFiled: September 28, 2015Date of Patent: June 27, 2017Assignee: DENSO CORPORATIONInventor: Masashi Yamasaki
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Publication number: 20170066737Abstract: 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: ApplicationFiled: November 21, 2016Publication date: March 9, 2017Applicant: Takeda Pharmaceutical Company LimitedInventors: Toshitake Kobayashi, Morihisa SAITOH, Yasufumi WADA, Hiroshi NARA, Nobuyuki NEGORO, Taisuke KATOH, Masashi YAMASAKI, Takahiro TANAKA, Naomi KITAMOTO
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Publication number: 20170005539Abstract: 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: ApplicationFiled: June 28, 2016Publication date: January 5, 2017Inventor: Masashi Yamasaki
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Patent number: 9521775Abstract: 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: GrantFiled: October 16, 2015Date of Patent: December 13, 2016Assignee: DENSO CORPORATIONInventor: Masashi Yamasaki
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Publication number: 20160326133Abstract: 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: ApplicationFiled: June 7, 2016Publication date: November 10, 2016Applicant: Takeda Pharmaceutical Company LimitedInventors: Toshitake Kobayashi, Morihisa SAITOH, Yasufumi WADA, Hiroshi NARA, Nobuyuki NEGORO, Taisuke KATOH, Masashi YAMASAKI, Takahiro TANAKA, Naomi KITAMOTO
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Publication number: 20160326102Abstract: 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: ApplicationFiled: May 6, 2016Publication date: November 10, 2016Applicant: Takeda Pharmaceutical Company LimitedInventors: Toshitake Kobayashi, Morihisa SAITOH, Yasufumi WADA, Hiroshi NARA, Nobuyuki NEGORO, Taisuke KATOH, Masashi YAMASAKI, Takahiro TANAKA, Naomi KITAMOTO
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Patent number: 9479025Abstract: 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: GrantFiled: July 29, 2015Date of Patent: October 25, 2016Assignee: DENSO CORPORATIONInventors: Hiroyuki Kawata, Masashi Yamasaki, Takeshi Sawada
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Publication number: 20160297470Abstract: 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: ApplicationFiled: April 1, 2016Publication date: October 13, 2016Inventor: Masashi Yamasaki
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Patent number: 9461522Abstract: 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: GrantFiled: July 29, 2015Date of Patent: October 4, 2016Assignee: DENSO CORPORATIONInventors: Masashi Yamasaki, Takeshi Sawada
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Patent number: 9457835Abstract: 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: GrantFiled: July 29, 2015Date of Patent: October 4, 2016Assignee: DENSO CORPORATIONInventors: Masashi Yamasaki, Takeshi Sawada
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Publication number: 20160204670Abstract: 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: ApplicationFiled: January 5, 2016Publication date: July 14, 2016Inventor: Masashi Yamasaki
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Publication number: 20160181883Abstract: 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: ApplicationFiled: December 16, 2015Publication date: June 23, 2016Inventors: Masashi Yamasaki, Hideki Kabune
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Publication number: 20160181885Abstract: 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: ApplicationFiled: December 16, 2015Publication date: June 23, 2016Inventor: Masashi Yamasaki
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Patent number: 9359004Abstract: 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: GrantFiled: July 29, 2015Date of Patent: June 7, 2016Assignee: DENSO CORPORATIONInventors: Hiroyuki Kawata, Masashi Yamasaki
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Publication number: 20160094106Abstract: 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: ApplicationFiled: September 22, 2015Publication date: March 31, 2016Inventor: Masashi Yamasaki
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Publication number: 20160094104Abstract: 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: ApplicationFiled: September 22, 2015Publication date: March 31, 2016Inventor: Masashi Yamasaki
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Publication number: 20160094175Abstract: 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: ApplicationFiled: September 28, 2015Publication date: March 31, 2016Inventor: Masashi Yamasaki
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Patent number: 9271422Abstract: 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: GrantFiled: December 2, 2013Date of Patent: February 23, 2016Assignee: DENSO CORPORATIONInventor: Masashi Yamasaki
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Publication number: 20160036288Abstract: 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: ApplicationFiled: July 29, 2015Publication date: February 4, 2016Inventors: Masashi Yamasaki, Takeshi Sawada
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Publication number: 20160036305Abstract: 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: ApplicationFiled: July 29, 2015Publication date: February 4, 2016Inventors: Hiroyuki Kawata, Masashi Yamasaki