Patents by Inventor Yukio SUNAMORI

Yukio SUNAMORI 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: 11071891
    Abstract: Provided is a method for manufacturing an exercise ball which is made by using a pasted ball such as a soft leather ball and which has a lower impact value compared to a conventional yarn-wound ball. The exercise ball comprises a spherical hollow rubber bladder (2) in which compressed air is sealed, and a yarn-wound reinforcement layer (3) formed by evenly winding a filament yarn around the surface of the rubber bladder, wherein the exercise ball is characterized in that nylon filament yarn, obtained by hard twisting two 30-50 denier nylon filaments 1-a, 1-b in a single-direction twist is used as a winding yarn (1).
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: July 27, 2021
    Assignee: MIKASA CORPORATION
    Inventors: Takashi Fujikura, Yukio Sunamori, Akinori Hamamoto
  • Publication number: 20200330831
    Abstract: Provided is a method for manufacturing an exercise ball which is made by using a pasted ball such as a soft leather ball and which has a lower impact value compared to a conventional yarn-wound ball. The exercise ball comprises a spherical hollow rubber bladder (2) in which compressed air is sealed, and a yarn-wound reinforcement layer (3) formed by evenly winding a filament yarn around the surface of the rubber bladder, wherein the exercise ball is characterized in that nylon filament yarn, obtained by hard twisting two 30-50 denier nylon filaments 1-a, 1-b in a single-direction twist is used as a winding yarn (1).
    Type: Application
    Filed: October 12, 2018
    Publication date: October 22, 2020
    Applicant: MIKASA CORPORATION
    Inventors: Takashi FUJIKURA, Yukio SUNAMORI, Akinori HAMAMOTO