Patents by Inventor Yukimasa Kobayashi

Yukimasa Kobayashi 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).

  • Shock absorber and piston
    Patent number: 9879777
    Abstract: A piston includes a disc formed to have an annular shape, a cylindrical skirt portion that projects from an outer peripheral portion of the disc on one end side in an axial direction of the disc, and a passage that is formed in the disc and that is opened on an inner side of the skirt portion. An inner peripheral surface of the skirt portion is a slope that increases its diameter toward a side opposite to the disc.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: January 30, 2018
    Assignee: KYB Corporation
    Inventors: Yukimasa Kobayashi, Hideki Yamada, Yuta Hoshino
  • SHOCK ABSORBER AND PISTON
    Publication number: 20150211634
    Abstract: A piston includes a disc formed to have an annular shape, a cylindrical skirt portion that projects from an outer peripheral portion of the disc on one end side in an axial direction of the disc, and a passage that is formed in the disc and that is opened on an inner side of the skirt portion. An inner peripheral surface of the skirt portion is a slope that increases its diameter toward a side opposite to the disc.
    Type: Application
    Filed: November 13, 2013
    Publication date: July 30, 2015
    Applicant: KAYABA INDUSTRY CO., LTD.
    Inventors: Yukimasa Kobayashi, Hideki Yamada, Yuta Hoshino
  • Valve structure
    Patent number: 9033123
    Abstract: A valve structure includes a valve disc partitioning an interior of a damper into a one-side chamber and an other-side chamber, a plurality of one-side ports and a plurality of other-side ports communicating between the one-side chamber and the other-side chamber, a one-side leaf valve opening and closing only the one-side ports, and an other-side leaf valve opening and closing only the other-side ports, the one-side ports and the other-side ports are alternately arranged in the valve disc along the circumferential direction, and a plurality of through holes formed in the valve disk is opened from the inner circumferential side of openings of all the other-side ports and communicates with the one-side ports.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: May 19, 2015
    Assignee: KAYABA INDUSTRY CO., LTD.
    Inventors: Yukimasa Kobayashi, Hideaki Takeuchi, Yoshihiro Shibata
  • VALVE STRUCTURE
    Publication number: 20140076677
    Abstract: A valve structure includes a valve disc partitioning an interior of a damper into a one-side chamber and an other-side chamber, a plurality of one-side ports and a plurality of other-side ports communicating between the one-side chamber and the other-side chamber, a one-side leaf valve opening and closing only the one-side ports, and an other-side leaf valve opening and closing only the other-side ports, the one-side ports and the other-side ports are alternately arranged in the valve disc along the circumferential direction, and a plurality of through holes formed in the valve disk is opened from the inner circumferential side of openings of all the other-side ports and communicates with the one-side ports.
    Type: Application
    Filed: May 22, 2012
    Publication date: March 20, 2014
    Applicant: KAYABA INDUSTRY CO., LTD.
    Inventors: Yukimasa Kobayashi, Hideaki Takeuchi, Yoshihiro Shibata