Patents by Inventor Yoshihiko Nagashima

Yoshihiko Nagashima 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).

  • Rotary damper and method for manufacturing rotary damper
    Patent number: 7575109
    Abstract: Described is a rotary damper comprising a partition wall to partition space formed between a rotor and a housing to house said rotor and to form a fluid chamber to be fluid-filled; and a vane to be disposed in said fluid chamber; and a plug to close an opening of said housing; wherein said plug has a flange to be used for mounting which protrudes from an outer circumferential surface of said plug and a stepped portion to enable part of a roller caulking an edge of said opening of said housing to revolve and travel along a peripheral edge of said housing so that said plug having said flange is coupled to said housing by caulking an edge of said opening of said housing.
    Type: Grant
    Filed: June 8, 2004
    Date of Patent: August 18, 2009
    Assignee: Kabushiki Kaisha Somic Ishikawa
    Inventors: Hidenori Kanno, Ryota Shimura, Masanori Itagaki, Yoshihiko Nagashima
  • Motion Control Apparatus and Door of Motor Vehicle
    Publication number: 20080277964
    Abstract: An object of the invention is to make an apparatus compact and simplify a structure. The invention provides a motion control apparatus which is provided with a pressing member pressing a fluid, and a fluid control mechanism (130) controlling a movement of the fluid pressed by the pressing member.
    Type: Application
    Filed: January 28, 2005
    Publication date: November 13, 2008
    Applicant: Kabushiki Kaisha Somic Ishikawa
    Inventors: Hidenori Kanno, Ryota Shimura, Masanori Itagaki, Yoshihiko Nagashima