Patents by Inventor Eiji Hosoi

Eiji Hosoi 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).

  • Seal structure of fluid device
    Patent number: 9695939
    Abstract: A seal structure includes: first and second members defining a hollow internal area of a fluid device; and a seal member fixed to the first member for sealing a gap between the first and second members. The seal member includes a sliding contact member being in sliding contact with a surface of the second member and formed of a resin. The second member includes a resin layer and a resin layer holding structure. The resin layer is formed by sliding the second member on the sliding contact member to transfer the resin forming the sliding contact member onto a sliding contact portion of the surface of the second member at which the second member comes into contact with the sliding contact member. The resin layer holding structure is a porous film formed by electric discharge surface treatment and holds the resin layer in the sliding contact portion.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: July 4, 2017
    Assignee: IHI Corporation
    Inventors: Hifumi Tabata, Nobuhiko Yunoki, Mitsutoshi Watanabe, Hiroyuki Ochiai, Eiji Hosoi
  • SEAL STRUCTURE OF FLUID DEVICE
    Publication number: 20150104585
    Abstract: A seal structure includes: first and second members defining a hollow internal area of a fluid device; and a seal member fixed to the first member for sealing a gap between the first and second members. The seal member includes a sliding contact member being in sliding contact with a surface of the second member and formed of a resin. The second member includes a resin layer and a resin layer holding structure. The resin layer is formed by sliding the second member on the sliding contact member to transfer the resin forming the sliding contact member onto a sliding contact portion of the surface of the second member at which the second member comes into contact with the sliding contact member. The resin layer holding structure is a porous film formed by electric discharge surface treatment and holds the resin layer in the sliding contact portion.
    Type: Application
    Filed: December 17, 2014
    Publication date: April 16, 2015
    Applicant: IHI Corporation
    Inventors: Hifumi TABATA, Nobuhiko Yunoki, Mitsutoshi Watanabe, Hiroyuki Ochiai, Eiji Hosoi
  • SEAL STRUCTURE OF FLUID DEVICE
    Publication number: 20120224962
    Abstract: A seal structure includes: first and second members defining a hollow internal area of a fluid device; and a seal member fixed to the first member for sealing a gap between the first and second members. The seal member includes a sliding contact member being in sliding contact with a surface of the second member and formed of a resin. The second member includes a resin layer and a resin layer holding structure. The resin layer is formed by sliding the second member on the sliding contact member to transfer the resin forming the sliding contact member onto a sliding contact portion of the surface of the second member at which the second member comes into contact with the sliding contact member. The resin layer holding structure is a porous film formed by electric discharge surface treatment and holds the resin layer in the sliding contact portion.
    Type: Application
    Filed: November 12, 2010
    Publication date: September 6, 2012
    Applicant: IHI Corporation
    Inventors: Hifumi Tabata, Nobuhiko Yunoki, Mitsutoshi Watanabe, Hiroyuki Ochiai, Eiji Hosoi