Patents by Inventor Wang Yang

Wang Yang 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: 5368133
    Abstract: A brake system for roller casters includes a pair of wheels rotatably mounted to respective sides of a main unit by means of a shaft, a brake assembly mounted within the main unit. The brake assembly includes a brake lever which will extend into a gear tooth of each wheel and jams the free movement of the wheel.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: November 29, 1994
    Inventor: Sung-Wang Yang