Patents by Inventor Atsushi Yoneoka

Atsushi Yoneoka 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: 11396921
    Abstract: A wave spring includes an annular body in which crests and valleys are alternately and continuously formed in a circumferential direction. At least a portion of the annular body in the circumferential direction is a joined portion. The joined portion of the annular body is a flat portion extending in a plane orthogonal to a center axis of the annular body.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: July 26, 2022
    Assignee: NHK SPRING CO., LTD.
    Inventors: Hideaki Sakai, Atsushi Yoneoka
  • Publication number: 20210003185
    Abstract: A wave spring includes an annular body in which crests and valleys are alternately and continuously formed in a circumferential direction. At least a portion of the annular body in the circumferential direction is a joined portion. The joined portion of the annular body is a flat portion extending in a plane orthogonal to a center axis of the annular body.
    Type: Application
    Filed: February 22, 2019
    Publication date: January 7, 2021
    Inventors: Hideaki SAKAI, Atsushi YONEOKA
  • Publication number: 20200088257
    Abstract: A pressing structure is arranged between a first pressed body and a second pressed body opposite to the first pressed body and presses the first pressed body and second pressed body. The pressing structure includes a spring member including: a base portion formed of a single strip-like member and having a curved principal surface; two extended portions extending respectively from end portions of the base portion and curved in a form inverse of a curving form of the base portion; and two bent portions extending respectively from end portions of the two extended portions, the end portions being at sides opposite to sides connected to the base portion, the two bent portions being curved in a form inverse of the curving form of the extended portions; and the maximum thickness of the extended portions and bent portions is smaller than the maximum thickness of the base portion.
    Type: Application
    Filed: December 6, 2017
    Publication date: March 19, 2020
    Inventors: Hironobu Imaizumi, Norihiro Tajima, Yoshio Yamada, Shuji Takahashi, Atsushi Yoneoka