Patents by Inventor Yoichiro Sankai

Yoichiro Sankai 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: 20190218474
    Abstract: A grease composition includes a base oil, a thickener, and an additive. The base oil contains a synthetic oil. The thickener contains a compound having a urea group. The additive contains a phosphoric compound, a calcium-based compound, and a hydrocarbon-based wax. A hub unit includes the grease composition enclosed therein.
    Type: Application
    Filed: September 28, 2016
    Publication date: July 18, 2019
    Applicants: JTEKT CORPORATION, KYODO YUSHI CO., LTD.
    Inventors: Koji YOSHIZAKI, Hiroshi INUKAI, Yoichiro SANKAI, Shinji YAMANE, Hideo SHIBATA, Hirofumi INOUE, Ryuji NAKATA, Junichi IMAI, Yutaka IMAI, Ryosuke SAITO, Yuta SATO
  • Publication number: 20180354171
    Abstract: A production method for a cover attached to an outer ring of a hub unit including procedures as follows. A nut is supported by a first protrusion of a first mold. By a second protrusion of a second mold, a core bar including a cylindrical section to be inserted into the outer ring is supported. A resin material is injected into a cavity formed by the first mold and the second mold to form a cover including a nut and a core bar. The cover is detached from the second mold by moving the first mold in a direction of being separated from the second mold. After this, the cover is detached from the first mold by pushing out the cover in a die matching direction with a pin disposed in the first mold.
    Type: Application
    Filed: November 10, 2016
    Publication date: December 13, 2018
    Applicant: JTEKT CORPORATION
    Inventors: Yoichiro SANKAI, Teruyuki WAKISAKA, Akihiro TAKEUCHI
  • Publication number: 20180345550
    Abstract: A production method for a cover attached to an outer ring of a hub unit first prepares a first mold and a second mold which form a cavity filled with a resin material. Next, by a protrusion of the first mold, a nut is supported. Next, when viewed from an axial direction of the nut, in a state where at least a part of the gate of the second mold overlaps an inside of the nut as compared with an outer circumferential surface of the nut, the first mold and the second mold are die-matched. Then, a resin material is injected into the cavity.
    Type: Application
    Filed: November 10, 2016
    Publication date: December 6, 2018
    Applicant: JTEKT Corporation
    Inventors: Yoichiro SANKAI, Teruyuki WAKISAKA, Akihiro TAKEUCHI
  • Publication number: 20180298304
    Abstract: Provided is a grease composition containing a base oil, a thickener, and an additive. The base oil contains a poly-?-olefin and has a kinematic viscosity of 20-60 mm2/s at 40° C. The thickener contains a urea compound produced by reacting a diisocyanate compound with a mixed amine containing an alicyclic amine and an aromatic amine. The additive contains a phosphorous acid ester, an ether compound, and an oxidized paraffin.
    Type: Application
    Filed: June 9, 2016
    Publication date: October 18, 2018
    Applicants: JTEKT Corporation, JXTG Nippon Oil & Energy Corporation
    Inventors: Koji YOSHIZAKI, Hiroshi INUKAI, Yoichiro SANKAI, Shinji YAMANE, Hideo SHIBATA, Hirofumi INOUE, Ryuji NAKATA, Kazumi SAKAI, Kentaro YAMAGUCHI, Kiyomi SAKAMOTO
  • Patent number: 8245814
    Abstract: A transmission ratio variable mechanism includes an input member and an output member, which are rotatable around a first axis, an inner ring arranged to connect the input and output members to each other so as to be differentially rotatable, an outer ring, and a motor. A second axis serving as a center axis of the inner ring and the outer ring is inclined to the first axis. The transmission ratio variable mechanism includes uneven engagement sections including a projection provided on one of each of end surfaces of the inner ring and a power transmission surface corresponding to the end surface, and a recess. The inner ring includes a first member forming the first end surface and a second member forming the second end surface. The first and second members are formed separately from each other and coupled to each other so as to be movable together.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: August 21, 2012
    Assignee: JTekt Corporation
    Inventors: Atsushi Yao, Satoru Murao, Yoichiro Sankai
  • Publication number: 20110108354
    Abstract: A transmission ratio variable mechanism includes an input member and an output member, which are rotatable around a first axis, an inner ring arranged to connect the input and output members to each other so as to be differentially rotatable, an outer ring, and a motor. A second axis serving as a center axis of the inner ring and the outer ring is inclined to the first axis. The transmission ratio variable mechanism includes uneven engagement sections including a projection provided on one of each of end surfaces of the inner ring and a power transmission surface corresponding to the end surface, and a recess. The inner ring includes a first member forming the first end surface and a second member forming the second end surface. The first and second members are formed separately from each other and coupled to each other so as to be movable together.
    Type: Application
    Filed: June 30, 2009
    Publication date: May 12, 2011
    Applicant: JTEKT CORPORATION
    Inventors: Atsushi Yao, Satoru Murao, Yoichiro Sankai