Patents by Inventor Yuki Ishikawa

Yuki Ishikawa 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: 11731399
    Abstract: Provided is an interlayer film for laminated glass capable of enhancing the sound insulating property of laminated glass over a wide resonance frequency region. An interlayer film for laminated glass according to the present invention has a one-layer or two or more-layer structure, and when the interlayer film is arranged between two sheets of clear float glass having a width of 25 mm, a length of 300 mm and a thickness of 2 mm to obtain a laminated glass X, a loss factor at a second resonance frequency, a loss factor at a third resonance frequency, and a loss factor at a fourth resonance frequency measured by a central exciting method at 20° C. in mechanical impedance measurement in accordance with ISO16940 of the laminated glass X are respectively 0.4 or more.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: August 22, 2023
    Assignee: SEKISUI CHEMICAL CO. LTD.
    Inventors: Yuki Ishikawa, Tatsuya Iwamoto, Shinji Kawada, Yuuki Okada
  • Publication number: 20230261542
    Abstract: A motor unit includes a motor including a rotor to rotate about a motor axis, and a stator radially outside of the rotor, a reduction gear connected to the motor, a differential connected to the motor through the reduction gear, a housing including a housing space to house the motor, the reduction gear, and the differential, and an oil passage to lead an oil to the motor. The oil passage includes an electric pump and a cooler. The electric pump and the cooler are fixed to the housing. The electric pump includes a portion located vertically below the cooler.
    Type: Application
    Filed: March 9, 2023
    Publication date: August 17, 2023
    Inventors: Yasuo YAMAGUCHI, Yuki ISHIKAWA
  • Patent number: 11728707
    Abstract: According to one aspect of the present disclosure, a driving device is a driving device for rotating an axle of a vehicle and includes: a motor having a rotor rotating about a motor axis extending in a horizontal direction orthogonal to a vertical direction; a reduction gear connected to the rotor; a differential gear connected to the motor via the reduction gear; and a housing configured to house the motor, the reduction gear and the differential gear therein. The housing has a protrusion that protrudes upward in the vertical direction, and at least one circumferential rib that extends in a circumferential direction. The protrusion has a female screw hole into which an eye bolt can be tightened. At least one of the circumferential ribs is connected to the protrusion.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: August 15, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Yuki Ishikawa, Hayato Nakama, Keisuke Fukunaga
  • Patent number: 11724481
    Abstract: Provided is an interlayer film for laminated glass capable of enhancing the pour stability at the time of extrusion during production of the interlayer film for laminated glass, and having excellent shape stability. An interlayer film for laminated glass according to the present invention is an interlayer film for laminated glass having a one-layer or two or more-layer structure, and includes a first layer containing a thermoplastic (meth)acrylic polymer and satisfies at least one of a first configuration that the thermoplastic (meth)acrylic polymer contained in the first layer is a thermoplastic (meth)acrylic polymer having a molecular weight distribution ratio of weight average molecular weight to number average molecular weight of 1 or more and 6 or less, and a second configuration that the thermoplastic (meth)acrylic polymer contained in the first layer is a thermoplastic (meth)acrylic polymer having a gel fraction of 5% by weight or less.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: August 15, 2023
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Shinji Kawada, Yuki Ishikawa
  • Patent number: 11728710
    Abstract: The motor unit includes: a motor having a motor shaft that rotates around a motor axis extending along a horizontal direction; a gear section connected to the motor shaft on one side of the motor shaft in an axial direction; a housing that houses the motor and the gear section; and an oil contained in the housing. The housing includes a motor housing section that has inside a motor chamber for housing the motor, and a gear housing section that has inside a gear chamber for housing the gear section. The housing is provided with an oil passage along which the oil circulates for cooling the motor. A pump that supplies the oil to the motor is provided in a channel of the oil passage. The pump has a pump motor. A rotation axis of the pump motor is parallel to the motor axis.
    Type: Grant
    Filed: November 9, 2022
    Date of Patent: August 15, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Yuki Ishikawa, Takanobu Oyama, Keisuke Fukunaga
  • Patent number: 11715987
    Abstract: In a motor, a motor housing includes a motor housing main body having a cylindrical portion and a lid portion holding a first bearing, a cover holding a second bearing, a stator housing forming a radial flow path, first and second seal members, and a positioning portion for radially positioning the motor housing main body and the cover. The stator housing includes a stator housing main body and a flange portion positioned between the motor housing main body and the cover in the axial direction. The first seal member seals a gap in the radial direction between the cylindrical portion and the stator housing main body. The second seal member seals a gap in the axial direction between the motor housing main body and the flange portion. The positioning portion positions the stator housing in the radial direction with respect to the motor housing main body and the cover.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: August 1, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Yuki Ishikawa, Masami Sugino
  • Patent number: 11670993
    Abstract: A motor unit includes a motor having a motor shaft extending along a first direction, an inverter that supplies electric power to the motor, a housing that supports the motor therein, an inverter case that is fixed to one side of the housing in a second direction orthogonal to the first direction and that houses the inverter, and a plurality of bolts that fasten the housing and the inverter case. The plurality of bolts include a first bolt extending along the first direction, a second bolt extending along the second direction, a third bolt extending along a third direction orthogonal to both the first direction and the second direction, and one or more fourth bolts extending in a fourth direction intersecting all of the first direction, the second direction and the third direction.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: June 6, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Yuki Ishikawa, Yohei Miyata
  • Patent number: 11649890
    Abstract: A drive apparatus includes a motor; a reduction gear connected to the motor; a differential connected to the reduction gear, for rotating an axle about a differential axis; a housing including a gear housing portion housing the reduction gear and the differential; and an oil housed in the gear housing portion. The differential includes a gear for rotating about the differential axis. An end portion of the gear is lower than the reduction gear, and is configured to soak in the oil. The housing includes an oil drain hole and an oil feed hole for joining an interior of the housing and a space outside of the housing, a first stopper member removably in the oil drain hole, and a second stopper member removably in the oil feed hole. Each of the oil drain hole and the oil feed hole is in a portion of the gear housing portion.
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: May 16, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Yuki Ishikawa, Shuhei Nakamatsu
  • Patent number: 11648755
    Abstract: Provided is an interlayer film for laminated glass capable of enhancing the sound insulating properties of laminated glass, and making foaming less likely to occur in an end part. The interlayer film for laminated glass according to the present invention includes a first layer, and a lateral covering part that covers at least part of a lateral part of the first layer, and the first layer has a shear elastic modulus at 25° C. of 0.17 MPa or less, and the lateral covering part has a shear elastic modulus at 25° C. of more than 1 MPa.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: May 16, 2023
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Tatsuya Iwamoto, Yuu Sakamoto, Yuki Ishikawa, Shinji Kawada
  • Publication number: 20230139180
    Abstract: A drive apparatus includes a motor, a transmission, an inverter, a housing accommodating the motor, transmission, inverter, and a fluid, a refrigerant for the inverter, a pump for the fluid, and a cooler that exchanges heat between the fluid and refrigerant. The housing includes first-third portions accommodating the motor, transmission and inverter, respectively, and a support portion. The second portion is on one side of the first portion in an axial direction. The support portion is radially outside in a circumferential direction, and is connected to an outer peripheral portion of the first portion and a bottom portion of the third portion. The support portion supports the pump and the cooler. Any one of the pump and the cooler is disposed on one side in the circumferential direction with respect to the support portion, and the other is disposed radially outside with respect to the support portion.
    Type: Application
    Filed: October 20, 2022
    Publication date: May 4, 2023
    Inventors: Yuki ISHIKAWA, Hitoshi KUROYANAGI, Keisuke NAKATA
  • Publication number: 20230137134
    Abstract: A rotating electrical machine includes a rotor, a stator, a housing, a bearing, an electricity removal device in electrical contact with a shaft and the housing, a nozzle supplying a fluid into the shaft, and a cover covering a part of the device. The shaft includes a hollow first member, a hollow second member coupled to a first side of the first member, and a channel communicating the inside and outside of the shaft. A part of the nozzle is inserted into the second member from an opening end. The housing has a peripheral wall surrounding the opening end. The bearing is held in the peripheral wall and is positioned away on the second side of the device. The cover is axially between the bearing and the device. The channel is opened in a portion positioned on the second side relative to the cover inside the peripheral wall.
    Type: Application
    Filed: October 20, 2022
    Publication date: May 4, 2023
    Inventors: Keisuke NAKATA, Yuki ISHIKAWA, Sota DOI, Kouhei OBA
  • Publication number: 20230137429
    Abstract: One aspect of a drive apparatus of the present invention includes a motor having a rotor that rotates about a motor axis and a stator that surrounds the rotor, a housing having a motor accommodating portion that accommodates the motor, a fluid stored in the housing, a flow path through which the fluid flows, and a pump that pressure-feeds the fluid in the flow path. The flow path includes a pipe-shaped intra-housing flow path that is disposed inside the motor accommodating portion and is provided with a feed hole for feeding the fluid to the motor, a pipe portion that is disposed inside the motor accommodating portion and relays between the pump and the intra-housing flow path, and an intra-side wall flow path that is provided in a wall portion of the housing and connects the pipe portion and the intra-housing flow path. The pipe portion and the intra-housing flow path are connected to each other by a coupling portion.
    Type: Application
    Filed: October 27, 2022
    Publication date: May 4, 2023
    Inventors: Keisuke NAKATA, Yuki ISHIKAWA, Sota DOI, Kouhei OBA
  • Publication number: 20230139181
    Abstract: A drive apparatus includes a motor, a housing having a motor accommodating portion, and a flow path for a fluid. The housing includes first and second side walls opposite along an axial direction of the motor and extending along a plane orthogonal to the motor axis, and a peripheral wall surrounding the motor. The flow path includes a first intra-side wall path provided in the first side wall, a first intra-housing path connected to the first intra-side wall path and extending inside the motor accommodating portion along the axial direction, a second intra-side wall path connected to the first intra-housing path and provided in the second side wall, and a second intra-housing path connected to the second intra-side wall path and extending inside the motor accommodating portion along the axial direction. The first and second intra-housing paths are provided with feed holes for feeding fluid to the motor.
    Type: Application
    Filed: October 27, 2022
    Publication date: May 4, 2023
    Inventors: Keisuke NAKATA, Yuki ISHIKAWA, Sota DOI, Kouhei OBA
  • Publication number: 20230136544
    Abstract: A motor has a rotor and a stator surrounding the rotor; a transmission mechanism having gears; a housing having a motor accommodating portion accommodating the motor, and a gear accommodating portion accommodating the transmission mechanism; a fluid stored in the housing; and a flow path through which the fluid flows. The housing has a side wall portion that defines an internal space of the motor accommodating portion and an internal space of the gear accommodating portion. The flow path includes an intra-housing flow path disposed in an internal space of the motor accommodating portion and provided with a feed hole for ejecting a fluid. A bearing holder that supports the shaft of the transmission mechanism via a bearing is provided on a gear facing surface of the side wall portion facing the transmission mechanism. The feed hole faces the bearing via an opening provided in the side wall portion.
    Type: Application
    Filed: October 27, 2022
    Publication date: May 4, 2023
    Inventors: Keisuke NAKATA, Yuki ISHIKAWA, Sota DOI, Kouhei OBA
  • Publication number: 20230132520
    Abstract: A rotating electrical machine includes an electricity removal device in electrical contact with a shaft and a housing, a channel, a nozzle having a through hole communicating with an inside of the shaft, and a seal radially between the shaft and the housing. The shaft includes a hollow first portion and a second portion having a lid on a first side of the first portion and an extension extending from the lid to the first side. The extension axially passes through the through hole. The device is in contact with the extension on the first side relative to the through hole. The seal is on the first side relative to the nozzle and on the second side relative to the device. The shaft includes a channel communicating the first portion and the through hole. The channel opens toward an axial gap between the nozzle and the seal of the housing.
    Type: Application
    Filed: October 20, 2022
    Publication date: May 4, 2023
    Inventors: Keisuke NAKATA, Yuki ISHIKAWA, Sota DOI, Kouhei OBA
  • Patent number: 11630824
    Abstract: Provided are a document search method and a document search system for retrieving a search target semantically relevant to a search keyword. A search processing unit 20 interprets the semantic content of document data relevant to a search query and identifies, based on the interpretation result, a location in the retrieved document data highly semantically relevant to the search query. Then, the document name and the specified location of the retrieved document data are displayed.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: April 18, 2023
    Assignee: Shimadzu Corporation
    Inventors: Yuki Ishikawa, Kentaro Morimoto, Akiyoshi Otani
  • Patent number: 11621609
    Abstract: One aspect of a motor of the present disclosure may include a rotor having a motor shaft disposed along a central axis extending in one direction, a stator facing the rotor via a gap in a radial direction, and a housing having an accommodating portion configured to accommodate the rotor and the stator, and to enable oil to be stored therein, wherein the housing comprises a lower wall portion facing a vertical-directional lower region in the inside of the accommodating portion, the lower wall portion comprises a cooling flow passage formed therein, and refrigerant flows in the cooling flow passage, and at least a portion of the cooling flow passage overlaps the vertical-directional lower region in the inside of the accommodating portion when viewed along a vertical direction.
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: April 4, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Yuki Ishikawa, Takayuki Migita, Shuhei Nakamatsu
  • Publication number: 20230100892
    Abstract: In an electric power unit which accommodates at least an electric motor in a housing, polygonal rib regions in which polygonal ribs are respectively formed are provided on at least two surfaces of an outer peripheral surface of the housing, and the polygonal rib regions are connected by a circumferential rib. Here, a first axial rib and a second axial rib extending parallel to an axial direction are formed on the outer peripheral surface of the housing, and the polygonal rib region is provided in a portion sandwiched between the first axial rib and the second axial rib. Further, the circumferential rib is formed over the entire part of the polygonal rib region in a circumferential direction. Note that the polygonal rib is a honeycomb rib.
    Type: Application
    Filed: September 22, 2022
    Publication date: March 30, 2023
    Inventors: Daisuke OGASAWARA, Yuki ISHIKAWA, Keisuke NAKATA, Jun MURAKAMI, Hiroki AKAISHI, Kazuyuki YAMAMOTO
  • Publication number: 20230101010
    Abstract: In an electric power unit that includes: a motor accommodating portion and a gear accommodating portion in a housing; and an inverter accommodating portion and an auxiliary machine attachment portion formed on side walls of the housing, the auxiliary machine attachment portion is formed by a protruding portion having at least a first vertical surface and a first horizontal surface formed on one of the side walls forming the motor accommodating portion and the gear accommodating portion of the housing, a first rib extending in a horizontal direction is formed on the first vertical surface facing one axial side of the auxiliary machine attachment portion, and a second rib, which extends in a vertical direction with respect to the first horizontal surface and connects the first horizontal surface and the inverter accommodating portion, is formed on the first horizontal surface, adjacent to the inverter accommodating portion, of the auxiliary machine attachment portion.
    Type: Application
    Filed: September 26, 2022
    Publication date: March 30, 2023
    Inventors: Daisuke OGASAWARA, Jun MURAKAMI, Hiroki AKAISHI, Kazuyuki YAMAMOTO, Yuki ISHIKAWA, Keisuke NAKATA
  • Patent number: 11616419
    Abstract: A motor unit includes a motor including a rotor and a stator, a gear connected to the rotor, a housing including a housing space to house the motor and the gear, oil in a vertically lower region of the housing space, and an oil passage to lead the oil from the vertically lower region of the housing space to be fed to the motor. The housing space includes a motor chamber to house the motor; and a gear chamber to house the gear. The housing includes a partition to divide the motor chamber and the gear chamber. A bottom portion of the motor chamber is higher than a bottom portion of the gear chamber. A portion of the oil fed to the motor is in a vertically lower region of the motor chamber. A vertically lower region of the partition includes a partition opening to bring the gear chamber and the motor chamber into communication with each other.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: March 28, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Yasuo Yamaguchi, Yuki Ishikawa