Patents by Inventor Koutarou Ueda

Koutarou Ueda 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 for manufacturing corrugated tubes
    Patent number: 4692197
    Abstract: A method for forming a corrugated tube having a smooth inner wall surface and a corrugated outer wall are provided. A first strip of resin material is wrapped around first portions of rollers arranged in a circular array and is helically wrapped around the first portions of the rollers each having equally spaced ridges therearound to form the corrugated outer wall. A second strip of resin material is fed from the interior of second portions of rollers arranged in a circular array onto the inner surface of the outer wall being manufactured and bonded thereto. The second strip bonded to the outer all is wrapped around the second portions of the rollers each having a smooth surface to form the smooth inner wall.
    Type: Grant
    Filed: November 20, 1985
    Date of Patent: September 8, 1987
    Assignee: Toyo Chemical Co., Ltd.
    Inventors: Koutarou Ueda, Noboru Hasegawa, Akio Machihara, Masaharu Kusaka, Kohei Orii, Yoshiro Noguchi
  • Apparatus for manufacturing corrugated tubes
    Patent number: 4575400
    Abstract: A method and apparatus for forming a corrugated tube having a smooth inner wall surface and a corrugated outer wall are provided. A first strip of resin material is wrapped around first portions of rollers arranged in a circular array and is helically wrapped around the first portions of the rollers each having equally spaced ridges therearound to form the corrugated outer wall. A second strip of resin material is fed from the interior of second portions of rollers arranged in a circular array onto the inner surface of the outer wall being manufactured and bonded thereto. The second strip bonded to the outer wall is wrapped around the second portions of the rollers each having a smooth surface to form the smooth inner wall.
    Type: Grant
    Filed: May 31, 1984
    Date of Patent: March 11, 1986
    Assignee: Toyo Chemical Co., Ltd.
    Inventors: Koutarou Ueda, Noboru Hasegawa, Akio Machihara, Masaharu Kusaka, Kohei Orii, Yoshiro Noguchi