Patents by Inventor Yuichi Nishikawa

Yuichi Nishikawa 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).

  • Publication number: 20200177045
    Abstract: A bush attached to a through hole of a casing of a motor holds a conductor. The bush includes a main body, an insertion hole, a flange, and a rib. The main body includes a first end surface, a second end surface facing the first end surface in a first direction, and side surfaces between the first end surface and the second end surface. The insertion hole penetrates an inside of the main body in the first direction, and allows the conductor to pass through. The flange protrudes from a side surface in a direction perpendicular or substantially perpendicular to the first direction. The rib protrudes from the side surface in a direction perpendicular or substantially perpendicular to the first direction.
    Type: Application
    Filed: August 6, 2018
    Publication date: June 4, 2020
    Inventors: Takahiro KIZU, Ryosuke KOZU, Yuichi NISHIKAWA, Takahiro HISADA, Takanobu OYAMA
  • Publication number: 20200062295
    Abstract: A motor includes a rotor, a stator that surrounds the radial outer side of the rotor, a housing that contains the rotor and the stator, a holder axially above the stator, a substrate fixed to the axial upper side of the holder, and a connector radially outward of the housing and electrically connected to the substrate. The holder includes a holder body, and a holder protrusion that connects to the holder body and extends radially outward from the housing. The connector contacts the underside of the holder protrusion.
    Type: Application
    Filed: March 30, 2017
    Publication date: February 27, 2020
    Inventors: Takashi HATTORI, Takahiro KIZU, Toshiya OKAMOTO, Yuichi NISHIKAWA, Yoshiaki YAMASHITA
  • Publication number: 20200059141
    Abstract: A motor includes a rotor, a stator including coils defined by windings of coil wires, a coil support into which the coil wires are inserted, a bearing supporting the shaft, a holder with a through-hole that holds both the bearing and the coil support. The coil support includes a base on the top surface of the stator, and a coil support portion extending axially upward from the base, at least a portion of which is located in the through-hole. The base is fitted to the stator through a gap.
    Type: Application
    Filed: March 30, 2017
    Publication date: February 20, 2020
    Inventors: Toshiya OKAMOTO, Takashi HATTORI, Yusaku YOSHIDA, Yoshiaki YAMASHITA, Takahiro KIZU, Yuichi NISHIKAWA
  • Publication number: 20190319516
    Abstract: A motor includes a rotor with a shaft that extends axially, a stator that surrounds a radial outer side of the rotor, a heat sink that is axially above the stator and provided with cavities that pass conductors therethrough and extend axially, and a substrate that is axially above the heat sink and includes an electronic component mounted thereon, wherein the heat sink includes a contact surface that contacts the substrate or electronic component directly or via a heat dissipating member and an exposed surface that does not come into contact with other members, wherein the exposed surface is located closer to an outer edge than the cavities.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 17, 2019
    Inventors: Takahiro KIZU, Takashi HATTORI, Toshiya OKAMOTO, Yuichi NISHIKAWA, Yoshiaki YAMASHITA
  • Publication number: 20190319517
    Abstract: A motor includes a rotor, a stator, a housing, a heat sink, a substrate, a connector, and a cover. The connector includes a connector shell with a shell projection shell. The heat sink includes a heat sink body and a heat sink protrusion. The heat sink protrusion includes a heat sink recess or heat sink projection. The shell projection or shell recess, and the heat sink recess or heat sink projection are fitted through a gap.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 17, 2019
    Applicant: Nidec Corporation
    Inventors: Takashi HATTORI, Yusaku YOSHIDA, Toshiya OKAMOTO, Takahiro KIZU, Yuichi NISHIKAWA
  • Publication number: 20190283798
    Abstract: A motor includes a rotor, a stator, a housing, a substrate, a connector, and a cover. The cover includes a covering wall that extends axially downward from a radial outer rim and covers at least a portion of the radial outer rim of the connector, and a cover recess that is radially inward from the covering wall and is depressed axially. The connector includes a connector projection that is provided in a radial outer edge area and extends axially, and the connector projection and the cover recess are fitted together through a gap.
    Type: Application
    Filed: March 30, 2017
    Publication date: September 19, 2019
    Inventors: Takashi HATTORI, Yusaku YOSHIDA, Toshiya OKAMOTO, Takahiro KIZU, Yuichi NISHIKAWA
  • Publication number: 20190280566
    Abstract: A motor includes a heat sink including an inner region, and an outer region located radially outward from the inner region. An axial thickness of the inner region is larger than an axial thickness of the outer region, the bottom surface of the outer region is located axially above the bottom surface of the inner region, and the inner region and the electronic component at least partially overlap in an axial direction. A bus bar holder is located axially below the outer region and overlaps the inner region in a radial direction.
    Type: Application
    Filed: March 30, 2017
    Publication date: September 12, 2019
    Inventors: Takashi HATTORI, Takahiro KIZU, Toshiya OKAMOTO, Yuichi NISHIKAWA, Yoshiaki YAMASHITA
  • Publication number: 20190280567
    Abstract: A motor includes a rotor including a shaft that extends axially, a stator that surrounds the radial outer side of the rotor and includes coils defined by windings of coil wires, a holder with through-holes that is axially above the stator for insertion of the coil wires therethrough and extends axially, and a substrate that is axially above the holder and includes an electronic component mounted thereon. Only some of the coil wires with the same phase are inserted into each of the through-holes, and the through-holes are separate holes provided to different phases of the coil wires.
    Type: Application
    Filed: March 30, 2017
    Publication date: September 12, 2019
    Inventors: Takashi HATTORI, Takahiro KIZU, Toshiya OKAMOTO, Yuichi NISHIKAWA, Yoshiaki YAMASHITA
  • Publication number: 20190273416
    Abstract: A motor includes a rotor, a stator, a housing, and a flange. The housing includes a first cylindrical portion, a contact portion extending radially inward from an axial lower end of the first cylindrical portion, a second cylindrical portion that extends axially downward from a radial inner edge of the contact portion and has a smaller outer diameter than the first cylindrical portion, and a bottom portion extending radially inward from an axial lower end of the second cylindrical portion. The flange includes a flange cylindrical portion, and a flange flat portion extending radially outward from an axial lower end of the flange cylindrical portion. The flange cylindrical portion is fixed to an outer surface of the second cylindrical portion and an upper end of the flange cylindrical portion contacts with an outside lower surface of the contact portion.
    Type: Application
    Filed: March 30, 2017
    Publication date: September 5, 2019
    Inventors: Takahiro KIZU, Takashi HATTORI, Toshiya OKAMOTO, Yuichi NISHIKAWA
  • Publication number: 20190267862
    Abstract: A motor includes a rotor including a shaft extending axially, a stator surrounding a radial outside of the rotor and including a coil defined by a wound coil wire, a holder disposed on an axially upper side of the stator, the coil wire being inserted into the holder, the holder including through-holes extending axially, and a circuit board disposed on the axially upper side of the holder, an electronic component being mounted on the circuit board. When the holder is viewed from the axially upper side, the through-holes are located in a region where a center angle (?) centered on the shaft is less than or equal to 180 degrees.
    Type: Application
    Filed: March 30, 2017
    Publication date: August 29, 2019
    Inventors: Takashi HATTORI, Takahiro KIZU, Toshiya OKAMOTO, Yuichi NISHIKAWA, Yoshiaki YAMASHITA, Mitsuo KODAMA, Yuya SAITO, Shingo FUKUMOTO, Chiharu KOBAYASHI
  • Patent number: 6307675
    Abstract: A liquid crystal rear-projection TV screen has a double-side lens sheet and horizontal lenticular sheet. A vertical lenticular portion is disposed on the rear side of the double-side lens sheet, and Fresnel lens is disposed on the front side. A horizontal lenticular portion is disposed on the rear side of the horizontal lenticular sheet, and a light-shielding layer and protective resin substrate are disposed on the front side. The resin substrate of the double-side lens sheet has a low transmittance, and the resin substrates of the horizontal lenticular sheet have high transmittances. The observer recognizes an image on the double-side lens sheet arranged behind the light-shielding layer.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: October 23, 2001
    Assignee: Toppan Printing Co. Ltd.
    Inventors: Takashi Abe, Tsutomu Yoshida, Yuichi Nishikawa, Yoshiyuki Ono