Patents by Inventor Toshiaki Ogata

Toshiaki Ogata 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: 11554807
    Abstract: A turning device includes a turning shaft having a first ball screw groove as one of a left screw and a right screw and a second ball screw groove as the other of the left screw and the right screw and turning wheels to be turned by moving in an axial direction, a first electric motor generating a first driving force, a second electric motor operating independently of the first electric motor and generating a second driving force, a first ball screw nut transmitting the first driving force generated by the first electric motor to the first ball screw groove, a second ball screw nut transmitting the second driving force generated by the second electric motor to the second ball screw groove, and a rotation regulating part regulating relative rotation of the turning shaft around an axis with respect to a housing.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: January 17, 2023
    Assignee: JTEKT CORPORATION
    Inventors: Yoshio Kondo, Fumio Kishida, Toshiaki Ogata, Keishi Nakamura, Hirohide Suzuki
  • Publication number: 20210229736
    Abstract: A turning apparatus includes tie rods, a wheel turning shaft, two motors, two ball screws, a transmission mechanism, and two controllers. The wheel turning shaft turns steered wheels of a vehicle. A first controller that is any one of the two controllers computes a current command value and allocates the current command value to the motors at a ratio that varies with a position of the wheel turning shaft in an axial direction. The two controllers each supply any one of the motors, which is an object to be controlled by a corresponding one of the controllers, with a current according to a corresponding of individual current command values.
    Type: Application
    Filed: January 22, 2021
    Publication date: July 29, 2021
    Applicant: JTEKT CORPORATION
    Inventors: Toshiaki OGATA, Fumio KISHIDA, Yoshio KONDO, Keishi NAKAMURA
  • Publication number: 20210053612
    Abstract: A steering device includes a steering rod that includes two ball screw parts, the steering rod being configured to steer a steerable wheel by moving linearly, two ball nuts respectively fastened to the two ball screw parts, two motors each configured to generate a drive force, two transmission mechanisms each including a toothed belt, the two transmission mechanisms being configured to transmit the drive force of each one of the two motors to a corresponding one of the ball nuts, two detectors configured to respectively detect rotation angles of the two motors, and a controller configured to control each of the two motors. The controller is configured to detect tooth jumping of the belts using the rotation angles of the two motors that are detected by the two detectors.
    Type: Application
    Filed: August 19, 2020
    Publication date: February 25, 2021
    Applicant: JTEKT CORPORATION
    Inventors: Yoshio KONDO, Toshiaki OGATA, Fumio KISHIDA, Keishi NAKAMURA, Hirohide SUZUKI
  • Publication number: 20210053615
    Abstract: A steering device includes two motors each configured to generate a drive force that steers a steerable wheel of a vehicle and two controllers respectively corresponding to the two motors, each of the two controllers being configured to individually control a corresponding one of the motors. One of the two controllers is a first controller, and the other one of the two controllers is a second controller. The first controller is configured to calculate a command value corresponding to a total torque that should be generated in the two motors. The command value is divided into individual command values using a changeable distribution ratio set for each of the motors, the individual command values respectively corresponding to the motors. The two controllers are configured to respectively supply the motors with current corresponding to the individual command values.
    Type: Application
    Filed: August 19, 2020
    Publication date: February 25, 2021
    Applicant: JTEKT CORPORATION
    Inventors: Yoshio KONDO, Toshiaki OGATA, Fumio KISHIDA, Keishi NAKAMURA, Hirohide SUZUKI
  • Publication number: 20200361523
    Abstract: A steering system includes a housing, a steering operation shaft that is housed in the housing and configured to move in an axial direction to steer right and left steered wheels, a first drive source that generates a first drive force, a second drive source that generates a second drive force, a first power transfer unit that applies an axial force to the steering operation shaft with the first drive source, a second power transfer unit that applies an axial force to the steering operation shaft with the second drive force, a position detection sensor that is provided in the housing and detects an axial position of the steering operation shaft, and a control device that controls the first drive source and the second drive source using a detection result of the position detection sensor.
    Type: Application
    Filed: April 29, 2020
    Publication date: November 19, 2020
    Applicant: JTEKT CORPORATION
    Inventors: Keishi NAKAMURA, Yoshio KONDO, Toshiaki OGATA, Fumio KISHIDA
  • Publication number: 20200324807
    Abstract: A steering device includes: a steered shaft; a first nut; a second nut; a first motor; a second motor; a first power transmission portion that transmits a first drive force generated by the first motor to the first nut, converts the first drive force into a force in an axial direction, and biases the steered shaft in the axial direction; a second power transmission portion that transmits a second drive force generated by the second motor to the second nut, converts the second drive force into a force in the axial direction, and biases the steered shaft in the axial direction; a signal detection device that detects a first detection signal and a second detection signal with different periods; and a computation device that computes an absolute position of the steered shaft in the axial direction.
    Type: Application
    Filed: April 13, 2020
    Publication date: October 15, 2020
    Applicant: JTEKT CORPORATION
    Inventors: Yoshio KONDO, Fumio KISHIDA, Toshiaki OGATA, Keishi NAKAMURA, Hirohide SUZUKI
  • Publication number: 20200262470
    Abstract: A turning device includes a turning shaft having a first ball screw groove as one of a left screw and a right screw and a second ball screw groove as the other of the left screw and the right screw and turning wheels to be turned by moving in an axial direction, a first electric motor generating a first driving force, a second electric motor operating independently of the first electric motor and generating a second driving force, a first ball screw nut transmitting the first driving force generated by the first electric motor to the first ball screw groove, a second ball screw nut transmitting the second driving force generated by the second electric motor to the second ball screw groove, and a rotation regulating part regulating relative rotation of the turning shaft around an axis with respect to a housing.
    Type: Application
    Filed: February 11, 2020
    Publication date: August 20, 2020
    Applicant: JTEKT CORPORATION
    Inventors: Yoshio KONDO, Fumio KISHIDA, Toshiaki OGATA, Keishi NAKAMURA, Hirohide SUZUKI
  • Publication number: 20190168799
    Abstract: A steering system includes a steered shaft, a ball screw device, a motor, and a drive force transfer mechanism. The position of a housing relative to the steered shaft with a vehicle in straight travel state is defined as a steering neutral position of the steered shaft. A deflector passage is formed such that respective end portions thereof, which are connected to a rolling path, are in a semiperimeter range of the inner peripheral surface of a rolling element nut with the steered shaft at the steering neutral position. The range is formed to extend to a phase of 90° on both sides in the circumferential direction of the inner peripheral surface from a crossing line that is the farther from a drive pulley, of crossing lines formed with a virtual plane including respective rotational axes of the driven pulley and the drive pulley intersecting the rolling element nut.
    Type: Application
    Filed: November 28, 2018
    Publication date: June 6, 2019
    Applicant: JTEKT CORPORATION
    Inventor: Toshiaki OGATA
  • Patent number: 10118640
    Abstract: A damper apparatus includes a shock-absorbing member configured to absorb a shock while restricting movement of a shaft relative to a housing. The shock-absorbing member includes a shock-receiving member configured to come into contact with one member, which is one of a large-diameter portion of the shaft and a restriction portion of the housing, and a pre-compression spring disposed between the other member, which is the other of the large-diameter portion and the restriction portion, and the shock-receiving member in a state where the pre-compression spring is compressed in advance in an axial direction. The pre-compression spring is configured to urge the one member in the axial direction via the shock-receiving member when the large-diameter portion is relatively moved toward the restriction portion beyond a prescribed position.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: November 6, 2018
    Assignee: JTEKT CORPORATION
    Inventor: Toshiaki Ogata
  • Patent number: 9920794
    Abstract: A torque limiter is configured from a ring body and a spring-form part provided in the ring body. The ring body includes a band-form metal plate and is bent approximately into a C-shape along the circumferential direction of a motor shaft and a lock holder. The spring-form part is formed so as to be capable of radial elastic deformation. The spring-form part is configured from main protrusions arranged in a compressed state between the motor shaft and the lock holder, and from sub-protrusions arranged in a non-compressed state. Further, grease is stored in a part or all of the concavities formed by the main protrusions and the sub-protrusions.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: March 20, 2018
    Assignees: JTEKT CORPORATION, TOGO SEISAKUSYO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshihiro Asakura, Masatoshi Fujimoto, Toshiaki Ogata, Yukihiko Kanayama, Hirotsune Suzuki, Yuji Nakamura, Yuzo Hirakawa, Kenji Hayashi, Hiroyuki Toyoda
  • Publication number: 20170267282
    Abstract: A damper apparatus includes a shock-absorbing member configured to absorb a shock while restricting movement of a shaft relative to a housing. The shock-absorbing member includes a shock-receiving member configured to come into contact with one member, which is one of a large-diameter portion of the shaft and a restriction portion of the housing, and a pre-compression spring disposed between the other member, which is the other of the large-diameter portion and the restriction portion, and the shock-receiving member in a state where the pre-compression spring is compressed in advance in an axial direction. The pre-compression spring is configured to urge the one member in the axial direction via the shock-receiving member when the large-diameter portion is relatively moved toward the restriction portion beyond a prescribed position.
    Type: Application
    Filed: March 9, 2017
    Publication date: September 21, 2017
    Applicant: JTEKT CORPORATION
    Inventor: Toshiaki OGATA
  • Publication number: 20150308511
    Abstract: This torque limiter is configured from a ring body and a spring-form part provided in the ring body. The ring body comprises a band-form metal plate and is bent approximately into a C-shape along the circumferential direction of a motor shaft and a lock holder. The spring-form part is formed so as to be capable of radial elastic deformation. The spring-form part is configured from main protrusions arranged in a compressed state between the motor shaft and the lock holder, and from sub-protrusions arranged in a non-compressed state. Further, grease is stored in a part or all of the concavities formed by the main protrusions and the sub-protrusions.
    Type: Application
    Filed: July 7, 2015
    Publication date: October 29, 2015
    Inventors: Toshihiro ASAKURA, Masatoshi FUJIMOTO, Toshiaki OGATA, Yukihiko KANAYAMA, Hirotsune SUZUKI, Yuji NAKAMURA, Yuzo HIRAKAWA, Kenji HAYASHI, Hiroyuki TOYODA
  • Patent number: 9109632
    Abstract: This torque limiter is configured from a ring body and a spring-form part provided in the ring body. The ring body comprises a band-form metal plate and is bent approximately into a C-shape along the circumferential direction of a motor shaft and a lock holder. The spring-form part is formed so as to be capable of radial elastic deformation. The spring-form part is configured from main protrusions arranged in a compressed state between the motor shaft and the lock holder, and from sub-protrusions arranged in a non-compressed state. Further, grease is stored in a part or all of the concavities formed by the main protrusions and the sub-protrusions.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: August 18, 2015
    Assignees: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, TOGO SEISAKUSYO CORPORATION
    Inventors: Toshihiro Asakura, Masatoshi Fujimoto, Toshiaki Ogata, Yukihiko Kanayama, Hirotsune Suzuki, Yuji Nakamura, Yuzo Hirakawa, Kenji Hayashi, Hiroyuki Toyoda
  • Publication number: 20130324345
    Abstract: This torque limiter is configured from a ring body and a spring-form part provided in the ring body. The ring body comprises a band-form metal plate and is bent approximately into a C-shape along the circumferential direction of a motor shaft and a lock holder. The spring-form part is formed so as to be capable of radial elastic deformation. The spring-form part is configured from main protrusions arranged in a compressed state between the motor shaft and the lock holder, and from sub-protrusions arranged in a non-compressed state. Further, grease is stored in a part or all of the concavities formed by the main protrusions and the sub-protrusions.
    Type: Application
    Filed: February 23, 2012
    Publication date: December 5, 2013
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, TOGO SEISAKUSYO CORPORATION
    Inventors: Toshihiro Asakura, Masatoshi Fujimoto, Toshiaki Ogata, Yukihiko Kanayama, Hirotsune Suzuki, Yuji Nakamura, Yuzo Hirakawa, Kenji Hayashi, Hiroyuki Toyoda
  • Publication number: 20090044651
    Abstract: Meshing surfaces are formed on the tooth surfaces of the teeth of a fixed side internally toothed gear, and positions of the meshing surfaces match with a track formed by addendum edges of teeth of a flexible externally toothed gear that moves with rotation of a wave generator. In the same manner, meshing surfaces are formed on the tooth surfaces of the teeth of a movable side internally toothed gear, and the positions of the meshing surfaces match the track formed by the addendum edges of the teeth of the flexible externally toothed gear that move with the rotation of the wave generator.
    Type: Application
    Filed: March 27, 2007
    Publication date: February 19, 2009
    Applicant: JTEKT CORPORATION
    Inventors: Motoyasu Yamamori, Toshiaki Ogata
  • Patent number: 6365783
    Abstract: Provided is a process for producing alcohols or aldehydes by reacting monoolefins with carbon monoxide and hydrogen with less formation of by-products. The process comprises the step of reacting a monoolefin with carbon monoxide and hydrogen in the presence of a cobalt carbonyl catalyst until the conversion of monoolefin reaches 50-90% (the first reaction step), the step of separating unreacted monoolefin from the reaction mixture obtained in the first reaction step (the step of separation of unreacted monoolefin) and the step of reacting the separated unreacted monoolefin with carbon monoxide and hydrogen in the presence of a cobalt carbonyl catalyst (the second reaction step), wherein at least one of the first reaction step and the second reaction step is carried out in the presence of water.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: April 2, 2002
    Assignee: Kyowa Yuka Co., Ltd.
    Inventors: Yorozu Yokomori, Tsukasa Hayashi, Toshiaki Ogata, Junichi Yamada, Seiji Saito
  • Patent number: 6072089
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: June 6, 2000
    Assignee: Kyowa Yuka Co., Ltd.
    Inventors: Satoru Mizutani, Toshiaki Ogata, Nobuhito Amemiya, Kenji Mutoh
  • Patent number: 3969641
    Abstract: A flexural mode quartz crystal vibrator formed from a quartz crystal plate having first and second opposed substantially planar surfaces, with a plurality of electrodes on at least one side thereof, is provided. The vibrator is characterized by the placement of electrodes on at least one of the opposed surfaces of the quartz crystal plate, the placement of the electrodes providing a vibrator having a thickness of 0.5 mm or less.
    Type: Grant
    Filed: April 16, 1974
    Date of Patent: July 13, 1976
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventors: Kikuo Oguchi, Akio Shimoi, Toshiaki Ogata
  • Patent number: 3944862
    Abstract: A flexural mode quartz crystal vibrator formed from a quartz crystal plate having first and second opposed substantially planar surfaces, with a plurality of electrodes on both said surfaces is provided. The vibrator is characterized by the placement of electrodes on both of the opposed surfaces so that the electrodes on each surface do not overlap each other.
    Type: Grant
    Filed: May 2, 1974
    Date of Patent: March 16, 1976
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventors: Akio Shimoi, Kikuo Oguchi, Toshiaki Ogata