Patents by Inventor Takehiko Hirose

Takehiko Hirose 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: 8197370
    Abstract: A chain tensioner (1) having a plunger (12) slidably assembled in a cylinder portion (13) together with a return spring (11), the chain tensioner (1) further has a stopper plate (22) having a through-hole (22a) formed therein, through which the plunger (12) is inserted; and a biasing member (24) disabling movement of the plunger (12), by applying a biasing force to the end of the stopper plate (22) so as to incline the stopper plate (22), the chain tensioner is configured to apply a hydraulic pressure of a hydraulic oil of an engine to the stopper plate (22), so as to reduce the inclination of the stopper plate (22) against the biasing force applied by the biasing member (24), to thereby allow movement of the plunger (12).
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: June 12, 2012
    Assignee: Daido Kogyo Co., Ltd.
    Inventors: Takehiko Hirose, Hitoshi Hamano, Toshimitsu Yoshimura
  • Publication number: 20100197431
    Abstract: A chain tensioner (1) having a plunger (12) slidably assembled in a cylinder portion (13) together with a return spring (11), the chain tensioner (1) further has a stopper plate (22) having a through-hole (22a) formed therein, through which the plunger (12) is inserted; and a biasing member (24) disabling movement of the plunger (12), by applying a biasing force to the end of the stopper plate (22) so as to incline the stopper plate (22), the chain tensioner is configured to apply a hydraulic pressure of a hydraulic oil of an engine to the stopper plate (22), so as to reduce the inclination of the stopper plate (22) against the biasing force applied by the biasing member (24), to thereby allow movement of the plunger (12).
    Type: Application
    Filed: September 28, 2006
    Publication date: August 5, 2010
    Applicant: DAIDO KOGYO., LTD.
    Inventors: Takehiko Hirose, Hitoshi Hamano, Toshimitsu Yoshimura
  • Patent number: 6306474
    Abstract: The present invention relates to a carbon fiber reinforced plastic member provided with high-elongation fiber bundle regions, which are uni-directionally aligned and separately disposed within the plastic member. The plastic member provides a carbon fiber reinforced plastic of lightweight, high strength and high modulus that is safe. Even if it breaks, it shows little scatter of fragments or exposure of dangerous fracture surfaces. Preferably, the high-elongation fiber at break has an elongation exceeding about 10%.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: October 23, 2001
    Assignee: Toray Industries, Inc.
    Inventors: Kenichi Yoshioka, Takehiko Hirose, Kenichi Noguchi