Patents by Inventor Takehiko Takamatsu

Takehiko Takamatsu 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).

  • Double-drum winch
    Patent number: 4216942
    Abstract: A double-drum winch having a single power transmission train for both a hook drum and a boom drum.The power transmission train comprises a high speed clutch and a low speed clutch mounted on a single first clutch shaft which is in turn mounted for rotation on a winch frame, a hook lowering clutch and a boom lowering clutch mounted on a single second clutch shaft which is in turn rotatably mounted on the frame, and a hook hoisting clutch and a boom hoisting clutch mounted on a single third clutch shaft which is in turn rotatably mounted on the frame, the second clutch shaft being located between the first and third clutch shafts and engageable with both the clutch shafts. The power transmission train is connected with the hook drum and the boom drum via a hook brake shaft and a boom brake shaft, respectively.
    Type: Grant
    Filed: March 30, 1979
    Date of Patent: August 12, 1980
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Takehiko Takamatsu, Akihiro Toyomura, Masami Hashimoto
  • Bulldozer
    Patent number: D274621
    Type: Grant
    Filed: April 24, 1981
    Date of Patent: July 10, 1984
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Takehiko Takamatsu, Heiji Yoshizawa, Yoshito Sato, Kazukiyo Chiba, Tomoyuki Takahashi, Yoshimasa Oobora
  • Body of excavator
    Patent number: D287499
    Type: Grant
    Filed: November 9, 1984
    Date of Patent: December 30, 1986
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Takehiko Takamatsu, Kazuo Kurihara