Patents by Inventor Yasuhiro Azuma

Yasuhiro Azuma 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: 11815108
    Abstract: An electro-hydraulic actuator includes: a motor output rotative power; an external gear pump activated by the motor; a hydraulic actuator operated by a pressurized working fluid supplied by the external gear pump; a manifold block in which a flow channel forming a working fluid circuit of the hydraulic actuator is incorporated; a first portion to store the motor; a second portion to store the external gear pump, the hydraulic actuator, and a reservoir; and a coupling portion to couple the first portion and the second portion in a liquid-tight state. The coupling portion includes a communication hole through which the first portion and the second portion communicate, a rotational shaft of the motor and a driving shaft of the external gear pump are joined to each other, and the external gear pump is attached to the coupling portion while being stored in the manifold block.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: November 14, 2023
    Assignee: ICAN COMPANY LTD.
    Inventors: Toshishige Kasuga, Yasuhiro Azuma
  • Publication number: 20230124513
    Abstract: An electro-hydraulic actuator includes: a motor output rotative power; an external gear pump activated by the motor; a hydraulic actuator operated by a pressurized working fluid supplied by the external gear pump; a manifold block in which a flow channel forming a working fluid circuit of the hydraulic actuator is incorporated; a first portion to store the motor; a second portion to store the external gear pump, the hydraulic actuator, and a reservoir; and a coupling portion to couple the first portion and the second portion in a liquid-tight state. The coupling portion includes a communication hole through which the first portion and the second portion communicate, a rotational shaft of the motor and a driving shaft of the external gear pump are joined to each other, and the external gear pump is attached to the coupling portion while being stored in the manifold block.
    Type: Application
    Filed: November 12, 2021
    Publication date: April 20, 2023
    Applicant: ICAN COMPANY LTD.
    Inventors: Toshishige Kasuga, Yasuhiro Azuma
  • Patent number: 11173881
    Abstract: A disc brake device has brake linings attached to brake levers that open and close in the lateral direction and sandwich a brake disc. A linking mechanism including a coupling device including lever mechanisms and a spindle opens and closes in conjunction with the lifting and lowering operation of a rod of a thruster, and the spindle is rotated in one direction by a one-way clutch in accordance with the relative displacement between the lever mechanisms and the coupling device to shorten an overall length of the coupling device, the rotation of the spindle is transmitted to an adjustment bolt screwed to a stopper on the lower end sides of the left and right brake levers via a flexible shaft, and the adjustment bolt protrudes downward with respect to the stopper.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: November 16, 2021
    Assignee: ICAN COMPANY LTD.
    Inventors: Toshishige Kasuga, Yasuhiro Azuma
  • Publication number: 20200101947
    Abstract: A disc brake device has brake linings attached to brake levers that open and close in the lateral direction and sandwich a brake disc. A linking mechanism including a coupling device including lever mechanisms and a spindle opens and closes in conjunction with the lifting and lowering operation of a rod of a thruster, and the spindle is rotated in one direction by a one-way clutch in accordance with the relative displacement between the lever mechanisms and the coupling device to shorten an overall length of the coupling device, the rotation of the spindle is transmitted to an adjustment bolt screwed to a stopper on the lower end sides of the left and right brake levers via a flexible shaft, and the adjustment bolt protrudes downward with respect to the stopper.
    Type: Application
    Filed: April 5, 2018
    Publication date: April 2, 2020
    Applicant: ICAN COMPANY LTD.
    Inventors: Toshishige Kasuga, Yasuhiro Azuma
  • Patent number: 8683799
    Abstract: A turbocharger includes a plurality of nozzle vanes provided on an outer circumferential side of a turbine wheel, a variable nozzle vane mechanism adjusting a flow of an exhaust gas with the nozzle vanes, and an actuator driving the nozzle vane mechanism. A control device for the turbocharger continues an abutting control that causes a movable member of the variable nozzle vane mechanism to abut against a stopper that regulates the movable range of the nozzle vanes as long as the engine is stopped while the vehicle is running.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: April 1, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yasuhiro Azuma
  • Publication number: 20120121392
    Abstract: In a turbocharger including a variable nozzle vane mechanism including a plurality of nozzle vanes provided on an outer circumferential side of a turbine wheel, the variable nozzle vane mechanism adjusting a flow of an exhaust gas with the nozzle vanes; and an actuator driving the nozzle vane mechanism, a control is continued that causes a movable member of the variable nozzle vane mechanism to abut against a mechanical stopper limiting the range of the movement of the nozzle vanes as long as the engine is stopped while the vehicle is running. Thus, wear of, for example, a link and a rod constituting the variable nozzle vane mechanism can be prevented during an engine stop while the vehicle is running.
    Type: Application
    Filed: November 12, 2010
    Publication date: May 17, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yasuhiro Azuma
  • Patent number: 6772698
    Abstract: The invention is structured such that an additional low-floor Vehicle C (intermediate vehicle) is inserted between a high-floor Vehicle A (leading vehicle) and a Vehicle B (trailing vehicle). Between Vehicle A and Vehicle C and between Vehicle B and Vehicle C, un-motorized idling carriages (10) and (24) are used for articulation, respectively. Therefore, the articulation structure that is used between the conventional Vehicle A and Vehicle B can be used also between Vehicle A and Vehicle C, and between Vehicle C and Vehicle B. In other words, the underframe structure of the Vehicle C rear half section is the same as the underframe structure of the Vehicle A rear half section and the underframe structure of Vehicle C top end section is the same as the underframe structure of Vehicle B top end section.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: August 10, 2004
    Assignee: The Kinki Sharyo Co., Ltd.
    Inventors: Kozo Ueta, Yasuhiro Azuma, Keisuke Yokota, Akihisa Nakazawa
  • Publication number: 20030172835
    Abstract: The invention is structured such that an additional low-floor Vehicle C (intermediate vehicle) is inserted between a high-floor Vehicle A (leading vehicle) and a Vehicle B (trailing vehicle). Between Vehicle A and Vehicle C and between Vehicle B and Vehicle C, un-motorized idling carriages (10) and (24) are used for articulation, respectively. Therefore, the articulation structure that is used between the conventional Vehicle A and Vehicle B can be used also between Vehicle A and Vehicle C, and between Vehicle C and Vehicle B. In other words, the underframe structure of the Vehicle C rear half section is the same as the underframe structure of the Vehicle A rear half section and the underframe structure of Vehicle C top end section is the same as the underframe structure of Vehicle B top end section.
    Type: Application
    Filed: August 15, 2002
    Publication date: September 18, 2003
    Inventors: Kozo Ueta, Yasuhiro Azuma, Keisuke Yokota, Akihisa Nakazawa