Patents by Inventor Wen-Wu Tu

Wen-Wu Tu 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: 6375204
    Abstract: A skate board has a platform, at least one supporting frame integrally formed on a bottom surface of the platform and extending parallel to a longitudinal direction of the platform, and a plurality of wheel trucks fixed with the supporting frame. At least one plurality of assembly holes is defined in the supporting frame and a center of each hole follows a curved bottom end face of the supporting frame. Each one of the wheel trucks includes a wheel axle disposed substantially perpendicular to the longitudinal direction of the platform and extending through one of the plurality of assembly holes. At least two wheels are rotatably mounted on each wheel axle, whereby the skate board is intended to support a user operating in a pitching way to advance the skate board on the ground, so as to simulate sea surfing on the dry land.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: April 23, 2002
    Inventor: Wen-Wu Tu
  • Patent number: 5303832
    Abstract: A hanger includes one or more tubes, a stub extended axially outwards from each end of the tubes, a sleeve threadedly engaging with each of the stubs, and a head having an extension threadedly engaged to each of the sleeves. The extensions and the heads are adjustable relative to the tube such that the heads are movable either axially outwards or inwards of the hanger.
    Type: Grant
    Filed: March 10, 1993
    Date of Patent: April 19, 1994
    Inventor: Wen-Wu Tu