Patents by Inventor Seiichiro Takizawa

Seiichiro Takizawa 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).

  • Method and apparatus for grading and measuring a surface having a curved profile
    Patent number: 4970800
    Abstract: Apparatus is disclosed for grading and measuring surfaces such as roadbeds which have curved and inclined profiles which may have different shapes in successive transverse sections of the roadbed. A blade and screw cutter are supported by a frame which extends over the surface being worked, and these tools are movable along this frame. The tools are movable toward and away from the surface being shaped in response to a control means which has memorized the appropriate positions, or by reference to a deformable rule which may also be reshaped in response to computer-memorized data. According to a disclosed method, the rule is reshaped for different sections of the surface.An apparatus for checking and measuring a surface which has a curved profile includes a plurality of piston-cylinder units which are mounted on a main frame.
    Type: Grant
    Filed: February 17, 1989
    Date of Patent: November 20, 1990
    Assignees: Kajima Road Company, Kajima Corporation
    Inventors: Seiichiro Takizawa, Mitsuo Fukukawa, Masayuki Yazawa, Kazumitsu Asai, Yoshiharu Okamoto, Tetsuo Tanaka
  • Method and apparatus for grading and measuring a surface having a curved profile
    Patent number: 4852278
    Abstract: Apparatus is disclosed for grading and measuring surfaces such as roadbeds which have curved and inclined profiles which may have different shapes in successive transverse sections of the roadbed. A blade and screw cutter are supported by a frame which extends over the surface being worked, and these tools are movable along this frame. The tools are movable toward and away from the surface being shaped in response to a control means which has memorized the appropriate positions, or by reference to a deformable rule which may also be reshaped in response to computer-memorized data. According to a disclsoed method, the rule is reshaped for different sections of the surface.An apparatus for checking and measuring a surface which has a curved profile includes a plurality of piston-cylinder units which are mounted on a main frame.
    Type: Grant
    Filed: June 23, 1987
    Date of Patent: August 1, 1989
    Assignees: Kajima Corporation, Kajima Road Company
    Inventors: Seiichiro Takizawa, Mitsuo Fukukawa, Masayuki Yazawa, Kazumitsu Asai, Yoshiharu Okamoto