Patents by Inventor Tadashi UOTANI

Tadashi UOTANI 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 damping force generator
    Patent number: 10203013
    Abstract: One embodiment provides a damping force generator. The damping force generator includes: a valve body having a compression-side inlet port into which the oil pushed by the piston flows; and a compression-side damping valve provided so as to block a port outlet and elastically deformed according to pressure of the oil flowing into the compression-side inlet port to thereby exhibit damping force. An opening cross-sectional area of a port inlet opening is larger than a passage cross-sectional area of the compression-side inlet port.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: February 12, 2019
    Assignee: SHOWA CORPORATION
    Inventors: Koji Tokunaga, Tadashi Uotani
  • Shock absorber
    Patent number: 10145438
    Abstract: One embodiment provides a shock absorber. The shock absorber includes a reservoir communication path through which a damping force generator and a reservoir communicate with each other, a compression-side communication path through which a piston-side oil chamber and the damping force generator communicate with each other, and a compression-side inlet port which is provided in the damping force generator and into which oil flows from the compression-side communication path and which has a compression-side valve that generates damping force. The cross-sectional area of the reservoir communication path is smaller than the cross-sectional area of the compression-side inlet port.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: December 4, 2018
    Assignee: SHOWA CORPORATION
    Inventors: Tadashi Uotani, Koji Tokunaga
  • SHOCK ABSORBER AND DAMPING FORCE GENERATOR
    Publication number: 20170284498
    Abstract: One embodiment provides a damping force generator. The damping force generator includes: a valve body having a compression-side inlet port into which the oil pushed by the piston flows; and a compression-side damping valve provided so as to block a port outlet and elastically deformed according to pressure of the oil flowing into the compression-side inlet port to thereby exhibit damping force. An opening cross-sectional area of a port inlet opening is larger than a passage cross-sectional area of the compression-side inlet port.
    Type: Application
    Filed: February 16, 2017
    Publication date: October 5, 2017
    Applicant: Showa Corporation
    Inventors: Koji TOKUNAGA, Tadashi UOTANI
  • SHOCK ABSORBER
    Publication number: 20170284497
    Abstract: One embodiment provides a shock absorber. The shock absorber includes a reservoir communication path through which a damping force generator and a reservoir communicate with each other, a compression-side communication path through which a piston-side oil chamber and the damping force generator communicate with each other, and a compression-side inlet port which is provided in the damping force generator and into which oil flows from the compression-side communication path and which has a compression-side valve that generates damping force. The cross-sectional area of the reservoir communication path is smaller than the cross-sectional area of the compression-side inlet port.
    Type: Application
    Filed: February 16, 2017
    Publication date: October 5, 2017
    Applicant: Showa Corporation
    Inventors: Tadashi UOTANI, Koji TOKUNAGA