Patents by Inventor Nobuaki Kurita

Nobuaki Kurita 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: 20200173521
    Abstract: A damper includes: first and second rotating elements rotatable around a rotation center; an elastic element elastically expanding and contracting in response to relative rotation of the first and second rotating elements; and a limiter provided in the first rotating element. The limiter includes a lining plate having a first sliding surface, a first cover plate having a second sliding surface and a first abutting surface, a second cover plate having an outer edge part and an inner edge part, and a biasing member. When a difference in torque between the lining plate and the first cover plate is a predetermined value or more, the first sliding surface slides with the second sliding surface, and the second sliding surface is inclined with respect to the first abutting surface so as to face the second direction as going radially inward in a free state of the first cover plate.
    Type: Application
    Filed: November 26, 2019
    Publication date: June 4, 2020
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Naoki TACHIUCHI, Nobuaki KURITA, Sayo YAMANAKA, Mitsuru NATSUME, Toru INAGAKI, Kento MIZUNO, Toru KOYAMA
  • Patent number: 10576564
    Abstract: A combined gear cutting apparatus includes a workpiece drive portion, a first processing portion holding and moving a first tool to a processing position for a workpiece, a second processing portion holding and moving a second tool to a processing position for the workpiece, and a control portion which includes a storage portion storing workpiece information indicating a configuration of the workpiece before first processing is performed, first tool information, second tool information and relative position information. The control portion includes a tooth groove configuration calculation portion calculating tooth groove configuration information of the workpiece based on the first tool information, the workpiece information and the relative position information obtained when the first processing is completed.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: March 3, 2020
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Tomokazu Tachikawa, Nobuaki Kurita
  • Patent number: 10500478
    Abstract: A swaying toy includes: a grounding-position-variable base member; a tubular tower member erected from the base member; a ball placing member which allows a ball to be placed thereon; and a piece placing member including a piece placing portion which allows a piece to be placed thereon and a ball-hit portion to be hit by the ball. The piece placing member is swingably attached to the tower member. The ball is released from the ball placing member according to a grounding state of the base member and passes through an inside space of the tower member.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: December 10, 2019
    Assignee: EPOCH COMPANY, LTD.
    Inventor: Nobuaki Kurita
  • Publication number: 20190363348
    Abstract: A negative electrode material for a lithium-ion secondary battery including: Composite (A) having Dv50 of 3.0 ?m or more and 20.0 ?m or less; and including: Particles (A1) and (A2) and Carbonaceous material (A3) as defined herein; a first graphite-containing substance (B) having Dv50 of 5.0 ?m or more and 20.0 ?m or less; and a second graphite-containing substance (C) having Dv50 of 1.0 ?m or more and 10.0 ?m or less. The Dv50 of the graphite-containing substance (B) is larger than that of the graphite-containing substance (C) by 4.0 ?m or more. Also disclosed is a negative electrode sheet and a lithium-ion secondary battery including the negative electrode material.
    Type: Application
    Filed: September 8, 2017
    Publication date: November 28, 2019
    Applicants: SHOWA DENKO K.K., UMICORE
    Inventors: Takayuki KURITA, Yasunari OTSUKA, Nobuaki ISHII
  • Publication number: 20190334162
    Abstract: A granular composite material, containing: particles (A) each formed of a substance which contains an element capable of intercalating and deintercalating lithium ions and is free of graphite; particles (B) each formed of a substance which contains graphite; carbon fibers (C); a polymer (D) containing a polysaccharide having an unsubstituted or substituted glucopyranose ring or a derivative thereof; and a solid electrolyte (E) containing a linear or branched polyether or a derivative thereof; a negative electrode obtained by laminating an electrode layer containing the granular composite material on a current collector; a method for producing the negative electrode; and a lithium ion secondary battery containing the negative electrode.
    Type: Application
    Filed: December 6, 2017
    Publication date: October 31, 2019
    Applicant: SHOWA DENKO K.K.
    Inventors: Takayuki KURITA, Masataka TAKEUCHI, Nobuaki ISHII
  • Publication number: 20180236576
    Abstract: A combined gear cutting apparatus includes a workpiece drive portion, a first processing portion holding and moving a first tool to a processing position for a workpiece, a second processing portion holding and moving a second tool to a processing position for the workpiece, and a control portion which includes a storage portion storing workpiece information indicating a configuration of the workpiece before first processing is performed, first tool information, second tool information and relative position information. The control portion includes a tooth groove configuration calculation portion calculating tooth groove configuration information of the workpiece based on the first tool information, the workpiece information and the relative position information obtained when the first processing is completed.
    Type: Application
    Filed: February 8, 2018
    Publication date: August 23, 2018
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Tomokazu TACHIKAWA, Nobuaki KURITA
  • Publication number: 20180111044
    Abstract: A swaying toy includes: a grounding-position-variable base member; a tubular tower member erected from the base member; a ball placing member which allows a ball to be placed thereon; and a piece placing member including a piece placing portion which allows a piece to be placed thereon and a ball-hit portion to be hit by the ball. The piece placing member is swingably attached to the tower member. The ball is released from the ball placing member according to a grounding state of the base member and passes through an inside space of the tower member.
    Type: Application
    Filed: October 20, 2017
    Publication date: April 26, 2018
    Applicant: EPOCH COMPANY, LTD.
    Inventor: Nobuaki KURITA
  • Publication number: 20170138228
    Abstract: A valve opening and closing timing control apparatus includes a phase adjustment mechanism of a gear type specifying a relative rotation phase between a driving-side rotation member and a driven-side rotation member by an electric actuator, the phase adjustment mechanism causing a revolution of a position of an eccentric axis about a rotation axis by the electric actuator so that an input gear connected to the driven-side rotation member via an Oldham coupling rotates relative to an output gear fixed to the driven-side rotation member, a groove portion in a linear form and a protruding portion in a rectangular form in the Oldham coupling slidably engaging with each other between the driving-side rotation member and an Oldham ring, a groove portion in a linear form and a protruding portion in a rectangular form in the Oldham coupling slidably engaging with each other between the Oldham ring and the input gear.
    Type: Application
    Filed: August 11, 2015
    Publication date: May 18, 2017
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Eiji MIYACHI, Naoto TOMA, Yoshiaki IGUCHI, Eiri NAGATA, Nobuaki KURITA, Masayoshi TAKEUCHI, Katsuhiro TSUJIMOTO
  • Patent number: 9327358
    Abstract: A method for processing a gear includes a first cutting process starting the cutting of a work by moving a cutter in a first cutting direction while maintaining a cutting depth of the work at a setting value and reducing the cutting depth of the work before a first cutter portion reaches an end portion of a cutting area in the first cutting direction and a second cutting process synchronously rotating the work and the cutter in a reverse direction of rotational directions of the work and the cutter in the first cutting process, maintaining the cutting depth of the work at the setting value, and cutting the end portion of the cutting area by moving the cutter in a second cutting direction.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: May 3, 2016
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yoshitomo Nakahara, Nobuaki Kurita
  • Publication number: 20150088298
    Abstract: A gear manufacturing device includes a control unit for synchronously rotating a work rotating about a work axis and a cutter rotating about a cutter axis, the work axis and the cutter axis being skew to each other, the control unit relatively moving the cutter and the work in an axial direction of the work with a predetermined cutting depth, and a correction control portion executing at least one of a position correction and a phase correction when an amplitude value of a vibration detected by a vibration sensor during a machining reaches equal to or greater than a set value, the position correction for correcting a relative positional relationship in a direction to correct the cutting depth, the phase correction for correcting a relative phase in a direction to correct an unbalance cutting that is otherwise to be applied on a pair of tooth surfaces formed on the work.
    Type: Application
    Filed: September 23, 2014
    Publication date: March 26, 2015
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Nobuaki KURITA, Yoshitomo NAKAHARA
  • Patent number: 8940109
    Abstract: A method for manufacturing a base material for a wave gear which enables the effective suppression of man-hours and manufacturing cost while providing the required strength and elastic deformation characteristics for an external gear of a wave gear. In this manufacturing method, steel having a carbon content of 0.48% or less is subjected to primary molding by being cold worked into the shape of an external gear for a wave gear. The resulting primary molded article is heated to a temperature range in which the main phase of the metallographic structure thereof forms an austenitic structure. The main phase of the metallographic structure is formed into bainite by carrying out quenching to a predetermined temperature higher than the martensitic transformation starting temperature and maintaining the temperature for a predetermined time. The product is then cooled to normal temperature.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: January 27, 2015
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Eiri Nagata, Nobuaki Kurita
  • Patent number: 8898903
    Abstract: A form rolling method for an involute gear, which includes a work piece including a cylindrical outer peripheral surface having a predetermined radius, and a round die with an involute tooth profile including an addendum pitch corresponding to a pitch defined by dividing a length of an outer circumference of the work piece by number of teeth of the involute gear. The round die is pressed to the work piece while rotating when form rolling the involuete gear.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: December 2, 2014
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Eiri Nagata, Nobuaki Kurita
  • Publication number: 20140234043
    Abstract: A method for processing a gear includes a first cutting process starting the cutting of a work by moving a cutter in a first cutting direction while maintaining a cutting depth of the work at a setting value and reducing the cutting depth of the work before a first cutter portion reaches an end portion of a cutting area in the first cutting direction and a second cutting process synchronously rotating the work and the cutter in a reverse direction of rotational directions of the work and the cutter in the first cutting process, maintaining the cutting depth of the work at the setting value, and cutting the end portion of the cutting area by moving the cutter in a second cutting direction.
    Type: Application
    Filed: December 19, 2013
    Publication date: August 21, 2014
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yoshitomo NAKAHARA, Nobuaki KURITA
  • Publication number: 20130000788
    Abstract: A method for manufacturing a base material for a wave gear which enables the effective suppression of man-hours and manufacturing cost while providing the required strength and elastic deformation characteristics for an external gear of a wave gear. In this manufacturing method, steel having a carbon content of 0.48% or less is subjected to primary molding by being cold worked into the shape of an external gear for a wave gear. The resulting primary molded article is heated to a temperature range in which the main phase of the metallographic structure thereof forms an austenitic structure. The main phase of the metallographic structure is formed into bainite by carrying out quenching to a predetermined temperature higher than the martensitic transformation starting temperature and maintaining the temperature for a predetermined time. The product is then cooled to normal temperature.
    Type: Application
    Filed: March 14, 2011
    Publication date: January 3, 2013
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Eiri Nagata, Nobuaki Kurita
  • Publication number: 20110302783
    Abstract: A form rolling method for an involute gear, which includes a work piece including a cylindrical outer peripheral surface having a predetermined radius, and a round die with an involute tooth profile including an addendum pitch corresponding to a pitch defined by dividing a length of an outer circumference of the work piece by number of teeth of the involute gear. The round die is pressed to the work piece while rotating when form rolling the involuete gear.
    Type: Application
    Filed: June 10, 2011
    Publication date: December 15, 2011
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Eiri NAGATA, Nobuaki Kurita