Patents by Inventor Masatami Tsukamoto

Masatami Tsukamoto 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).

  • High-friction fluid seal and shock absorber
    Patent number: 7837017
    Abstract: A high-friction fluid seal used for high-friction sealing, comprising a fluid seal lip provided on the working fluid filling side to intercept a working fluid; and a dust lip provided on the working fluid non-filling side (the outer side) of the fluid seal lip to intercept dust coming from the outside, wherein the thickness of a working fluid film formed on the extension stroke by the dust lip is smaller than the thickness of a working fluid film formed on the extension stroke by the fluid seal lip.
    Type: Grant
    Filed: November 9, 2008
    Date of Patent: November 23, 2010
    Assignee: Kayaba Industry Co., Ltd
    Inventors: Chikashi Imoto, Masatami Tsukamoto, Etsuro Nakada
  • High-Friction Fluid Seal and Shock Absorber
    Publication number: 20090152779
    Abstract: A high-friction fluid seal used for high-friction sealing, comprising a fluid seal lip provided on the working fluid filling side to intercept a working fluid; and a dust lip provided on the working fluid non-filling side (the outer side) of the fluid seal lip to intercept dust coming from the outside, wherein the thickness of a working fluid film formed on the extension stroke by the dust lip is smaller than the thickness of a working fluid film formed on the extension stroke by the fluid seal lip.
    Type: Application
    Filed: November 9, 2008
    Publication date: June 18, 2009
    Inventors: Chikashi Imoto, Masatami Tsukamoto, Etsuro Nakada