Patents by Inventor Hiroki MIZUKAWA

Hiroki MIZUKAWA 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).

  • Publication number: 20210268887
    Abstract: A vibration damping device including: a first attachment member and a second attachment member disposed apart from each other; and a main rubber elastic body connecting the first attachment member and the second attachment member, the main rubber elastic body being of a frustoconical-like shape having an outer peripheral surface whose diameter gradually increases from the first attachment member toward the second attachment member, the main rubber elastic body including a recess opening onto a center portion thereof on a large-diameter side that is a second attachment member side, and the main rubber elastic body that constitutes a bottom part of the recess integrally including a vibration-damping protrusion protruding into the recess.
    Type: Application
    Filed: February 22, 2021
    Publication date: September 2, 2021
    Applicants: SUMITOMO RIKO COMPANY LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroki MIZUKAWA, Naoki FURUMACHI, Katsuhiro SAKURAI
  • Patent number: 9551396
    Abstract: Provided is a vibration damping device having a novel structure and that can have a greatly increased load strength resistance without a concomitant increase in the number of components or size at a stopper mechanism. The structure is such that first and second stopper portions having a hanging plate part and a dip part are provided to a pair of opposing sides of a stopper plate of a vibration damping device, whereas a pair of side plate portions extending between the first and second stopper portions are provided to the other pair of opposing sides of the stopper plate, and openings at both sides of the first and second stopper portions are closed by the pair of side plate portions.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: January 24, 2017
    Assignees: SUMITOMO RIKO COMPANY LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noriaki Yoshii, Hiroki Mizukawa, Yorishige Shimizu, Hiroyuki Ichikawa, Katsuhiko Katagiri, Shinji Komura
  • Publication number: 20160116018
    Abstract: Provided is a vibration damping device having a novel structure and that can have a greatly increased load strength resistance without a concomitant increase in the number of components or size at a stopper mechanism. The structure is such that first and second stopper portions having a hanging plate part and a dip part are provided to a pair of opposing sides of a stopper plate of a vibration damping device, whereas a pair of side plate portions extending between the first and second stopper portions are provided to the other pair of opposing sides of the stopper plate, and openings at both sides of the first and second stopper portions are closed by the pair of side plate portions.
    Type: Application
    Filed: June 2, 2014
    Publication date: April 28, 2016
    Applicants: Sumitomo Riko Company Limited, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noriaki YOSHII, Hiroki MIZUKAWA, Yorishige SHIMIZU, Hiroyuki ICHIKAWA, Katsuhiko KATAGIRI, Shinji KOMURA