Patents by Inventor Daisuke Okamoto

Daisuke Okamoto 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: 9228612
    Abstract: A tapered roller bearing includes: an outer ring; an inner ring; a plurality of tapered rollers; and a cage that holds the tapered rollers at equal intervals in the circumferential direction of the tapered roller bearing. A small-diameter-side inner periphery end portion of the cage is located at a position inward of an axially outer small end face of the inner ring in the axial direction of the tapered roller bearing. A small-diameter-side end face of the cage has an inwardly tilted face that is tilted inward in the axial direction from the inner periphery end portion from the radially inner side to the radially outer side.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: January 5, 2016
    Assignee: JTEKT CORPORATION
    Inventors: Daisuke Okamoto, Akiyuki Suzuki
  • Publication number: 20150364235
    Abstract: A soft magnetic member is formed such that, when a differential relative permeability in an applied magnetic field of 100 A/m is represented by a first differential relative permeability ??L, and when a differential relative permeability in an applied magnetic field of 40 kA/m is represented by a second differential relative permeability ??H, a ratio of the first differential relative permeability ??L to the second differential relative permeability ??H satisfies a relationship of ??L/??H?10, and a magnetic flux density in an applied magnetic field of 60 kA/m is 1.15 T or higher.
    Type: Application
    Filed: June 12, 2015
    Publication date: December 17, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke OKAMOTO, Kiyotaka ONODERA, Shinjiro SAIGUSA, Kohei ISHII, Masashi OHTSUBO, Junghwan HWANG, Masaaki TANI, Takeshi HATTORI
  • Publication number: 20150345718
    Abstract: A line light irradiation device includes a plurality of light source units on which a plurality of light source mounting substrates are juxtaposed on a base in a row, and the plurality of light source units are juxtaposed in a row. The plurality of light source mounting substrates are positioned and fixed to the base at predetermined intervals. Thus, if a light source in a certain light source unit becomes defective, this light source unit can be removed so as to exchange only the light source mounting substrate on which the defective light source is mounted. Therefore, the normal light sources can be left as they are as much as possible, and waste of the light sources can be reduced. Further, the light source mounting substrates are positioned and fixed at predetermined intervals, and thus dimensional errors do not accumulate in the light source mounting substrates at the juxtaposition ends.
    Type: Application
    Filed: December 17, 2013
    Publication date: December 3, 2015
    Inventor: Daisuke OKAMOTO
  • Publication number: 20150330130
    Abstract: An arm power supply device includes a first arm configured to be rotatably and axially supported to a base member, and a second arm configured to be rotatably and axially supported on a rotation tip side of the first arm. The second arm includes a harness insertion groove and a harness fixing portion on a rotation tip side. There is employed a configuration in which an outer wall of the harness insertion groove is extended longer than an inner wall on a rotational base end side, the outer wall includes an inclined or bent guide wall portion on the rotational base end side, and a wire harness is guided upward along the guide wall portion when the second arm rotates to the lower side.
    Type: Application
    Filed: July 16, 2013
    Publication date: November 19, 2015
    Applicant: Yazaki Corporation
    Inventors: Tomoyasu Terada, Tsukasa Sekino, Hiroshi Yamashita, Daisuke Okamoto
  • Publication number: 20150292559
    Abstract: A double row ball bearing includes: an outer ring; an inner ring; a plurality of first balls disposed between the outer ring and the inner ring to form a first ball row; a plurality of second balls disposed between the outer ring and the inner ring to form a second ball row having a pitch circle diameter larger than that of the first ball row; an annular first cage having a plurality of first pockets in which the first balls are held; an annular second cage having a plurality of second pockets in which the second balls are held; and an annular portion that covers, together with the outer ring, a portion of each second ball held in the second pocket from the radially outside, the portion being exposed on the outside of the second pocket and oriented radially outward.
    Type: Application
    Filed: April 15, 2015
    Publication date: October 15, 2015
    Inventors: Yuzuru TAKAHASHI, Daisuke OKAMOTO, Kouichirou NAITOU
  • Patent number: 9159489
    Abstract: The invention includes: powder preparation step of obtaining magnetic core powders by mixing, of magnetic powders with thermosetting resin powders in hot state; powder filling step of filling the obtained magnetic core powders into a die; a compaction step of compacting magnetic core powders; and compact heating step of heating, compacts to the elevated temperature state at which the thermosetting resin hardens after compaction.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: October 13, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Junghwan Hwang, Takeshi Hattori, Masaki Hirano, Masaki Sugiyama, Yusuke Oishi, Daisuke Okamoto, Hidenari Yamamoto
  • Publication number: 20150277069
    Abstract: An opto-electric integrated circuit includes an optical waveguide formed using a portion of an insulation layer on a silicon substrate to form a lower clad and using a portion of a semiconductor layer formed on the insulation layer to form a core. The opto-electric integrated circuit also includes an optical device connected to the optical waveguide, an electrical circuit connected to the optical device, a mesa-shaped connection section interconnecting the optical device and the electrical circuit, and an electrically conductive film formed in a region at least containing a flank surface of the connection section. The electrically conductive film is grounded while contacting the silicon substrate.
    Type: Application
    Filed: March 24, 2015
    Publication date: October 1, 2015
    Inventors: Daisuke OKAMOTO, Yutaka URINO, Tatsuya USUKI
  • Publication number: 20150247779
    Abstract: The present invention simply and reliably inspects characteristics of a plurality of optical devices in a wafer state. This optical integrated circuit is provided with: an optical coupler having light inputted thereto from the surface of a semiconductor substrate; an optical waveguide that propagates inspection light inputted to the optical coupler; a light distributor that distributes inspection light to the optical waveguides, said inspection light having been propagated by means of the optical waveguide; and optical devices that are respectively provided on the optical waveguides having the light distributed thereto using the light distributor.
    Type: Application
    Filed: June 25, 2013
    Publication date: September 3, 2015
    Inventor: Daisuke Okamoto
  • Publication number: 20150244466
    Abstract: In order to provide an optical sending circuit which has a small size and can carry out long haul transmission and which can reduce a stray light and an optical cross talk noise generated in an optical transmission line, the optical sending circuit includes: a first EA modulator whose reverse bias voltage is changed by a first data signal; a second EA modulator whose reverse bias voltage is changed by a second data signal; a first optical transmission line which inputs a light to be modulated, which is to be modulated by the first EA modulator, to the first EA modulator; a second optical transmission line which is connected with an output of the first EA modulator, and transfers an optical signal modulated by the first data signal; and a third optical transmission line which is connected with an output of the second EA modulator.
    Type: Application
    Filed: August 26, 2013
    Publication date: August 27, 2015
    Inventors: Daisuke Okamoto, Junichi Fujikata
  • Publication number: 20150203057
    Abstract: An arm power supply device includes a first arm configured to be axially supported to a base member to be freely rotated, and a second arm configured to be axially supported on the rotation tip side of the first arm to be freely rotated. The second arm includes a harness insertion groove and a harness fixing portion on the rotation tip side. The first arm includes a flange portion on the rotation tip side to prevent a harness covering a portion of the harness insertion groove on a rotational base end side from escaping. The flange portion is formed in a longitudinal direction of the first arm to protrude. The flange portion is formed in a width integrally with a longitudinal direction and a width direction of the first arm.
    Type: Application
    Filed: July 16, 2013
    Publication date: July 23, 2015
    Inventors: Tomoyasu Terada, Tsukasa Sekino, Hiroshi Yamashita, Daisuke Okamoto
  • Publication number: 20150192195
    Abstract: Provided are gears in which flanks of mutually meshing teeth are polished and finished to a predetermined surface texture. In the gears, the arithmetic mean roughness Ra of the tooth flanks is equal to or less than 0.15 ?m and the peak height Rpk satisfies 0.01 ?m<Rpk<0.1 ?m after the finishing and before use.
    Type: Application
    Filed: November 5, 2013
    Publication date: July 9, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke Okamoto, Naoki Moriguchi, Morihiro Matsumoto, Masayuki Ishibashi, Daisuke Tokozakura
  • Publication number: 20150176650
    Abstract: A ball bearing includes an outer ring; an inner ring; a plurality of balls; and a cage that has an annular shape. Oil flows into an area between the outer ring and the inner ring from one side in an axial direction and flows out from the other side in the axial direction. The cage includes an annular portion provided on an oil inflow side, and bar portions extending from the annular portion toward an oil outflow side. An outer peripheral end portion of the annular portion is constituted by a corner portion at which an axial outer end face intersects with an outer peripheral surface. An axial position of a tip end of the corner portion is substantially same as an axial position of a side surface of the outer ring.
    Type: Application
    Filed: December 23, 2014
    Publication date: June 25, 2015
    Inventors: Akiyuki SUZUKI, Daisuke OKAMOTO, Hiroyuki OHSHIMA, Atsushi NAGAI
  • Publication number: 20150176649
    Abstract: A corner is formed at a small-diameter-side end portion of a cage. The cage is disposed such that the axial position of a tip of the corner substantially coincides with the axial position of a large end face of an outer ring. Thus, a cylindrical space formed between an inner periphery cylindrical face of the outer ring and an outer periphery cylindrical face of the cage is filled with an oil low pressure region. As a result, the inflow of the oil into a bearing is restricted.
    Type: Application
    Filed: December 15, 2014
    Publication date: June 25, 2015
    Inventors: Daisuke OKAMOTO, Akiyuki SUZUKI
  • Publication number: 20150176648
    Abstract: A tapered roller bearing includes: an outer ring; an inner ring; a plurality of tapered rollers; and a cage that holds the tapered rollers at equal intervals in the circumferential direction of the tapered roller bearing. A small-diameter-side inner periphery end portion of the cage is located at a position inward of an axially outer small end face of the inner ring in the axial direction of the tapered roller bearing. A small-diameter-side end face of the cage has an inwardly tilted face that is tilted inward in the axial direction from the inner periphery end portion from the radially inner side to the radially outer side.
    Type: Application
    Filed: December 15, 2014
    Publication date: June 25, 2015
    Inventors: Daisuke OKAMOTO, Akiyuki SUZUKI
  • Publication number: 20150115648
    Abstract: A sliding-door power feeding structure is provided which achieves minimized manufacturing costs, small size, and light weight. The sliding-door power feeding structure includes a second end retainer provided between a door panel and a door trim and configured to retain a second end of an electric wire, the second end retainer including a base fixed to one of the door panel and the door trim, a turnable arm turnably supported on the base and having an end configured to retain the electric wire, and biasing part for biasing the turnable arm in a direction to absorb a surplus length of the electric wire, wherein the door trim has a lower edge including an electric wire guiding portion, the electric wire guiding portion including a first bend bent to the outboard side and a second bend bent at an end of the first bend downward and to the inboard side.
    Type: Application
    Filed: December 31, 2014
    Publication date: April 30, 2015
    Inventors: Tomoyasu Terada, Tsukasa Sekino, Hiroshi Yamashita, Daisuke Okamoto
  • Publication number: 20150107876
    Abstract: The present invention provides an electric wire routing device with which the device can be reduced in size and a mounting space for the device can be reduced. The electric wire routing device includes an outer member provided in either one of a support body and a slide body, and an inner member turnably supported in the outer member. An electric wire is inserted through the inner member. The inner member is configured by combining, with each other, a pair of inner divided bodies having the same shapes. The inner divided bodies sandwich butt surfaces which intersect with a first axis and which include a second axis. Each of the inner divided bodies includes a male lock portion provided on one side of a radial direction of the device, and a female lock portion provided on the other side.
    Type: Application
    Filed: January 5, 2015
    Publication date: April 23, 2015
    Inventors: Tomoyasu Terada, Tsukasa Sekino, Hiroshi Yamashita, Daisuke Okamoto
  • Publication number: 20150108289
    Abstract: There is employed an arm power supply device in which a first arm is rotatably and axially supported to a base member having one harness fixing portion, a second arm having the other harness fixing portion is rotatably and axially supported on a rotation tip side of the first arm, the first arm includes an enclosure portion forming a slit through which a wire harness is inserted, and the wire harness passes from the base member to the slit and is wired over the second arm. The enclosure portion includes an inclined wall to guide the wire harness derived in a bent shape from the second arm to be in contact with the inner surface.
    Type: Application
    Filed: December 30, 2014
    Publication date: April 23, 2015
    Inventors: Tomoyasu Terada, Tsukasa Sekino, Hiroshi Yamashita, Daisuke Okamoto
  • Publication number: 20150102182
    Abstract: An objective of the present invention is to provide a power-supplying system that can restrain an increase in size thereof with a spring equipped therewith. A first end of a rolling spring projects inwardly, and a first locking section is formed on a primary shaft of a turning member, the primary shaft being disposed inside the rolling spring so that the turning member can engage with the rolling spring at the inside of the rolling spring, thereby restraining an increase in size thereof.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 16, 2015
    Inventors: Tsukasa Sekino, Hiroshi Yamashita, Daisuke Okamoto
  • Publication number: 20150082930
    Abstract: In a gear mechanism that includes a gear in which a tooth trace is twisted at a predetermined angle with respect to an axial direction, a curvature radius along a line of contact at a meshing position where a line of contact does not intersect a pitch circle is formed larger than a curvature radius along a line of contact at a meshing position where a line of contact intersects a pitch circle, on a plane of action of the gear.
    Type: Application
    Filed: February 27, 2013
    Publication date: March 26, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Daisuke Okamoto
  • Publication number: 20150014573
    Abstract: Thermally annealed superparamagnetic core shell nanoparticles of an iron-cobalt alloy core and a silicon dioxide shell having high magnetic saturation are provided. A magnetic core of high magnetic moment obtained by compression sintering the thermally annealed superparamagnetic core shell nanoparticles is also provided. The magnetic core has little core loss due to hysteresis or eddy current flow.
    Type: Application
    Filed: July 15, 2013
    Publication date: January 15, 2015
    Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Michael Paul ROWE, Sean Evan SULLIVAN, Daisuke OKAMOTO