Patents by Inventor Woon Cheung

Woon Cheung 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).

  • Publication number: 20050232696
    Abstract: A system of pieces for adding to variable height and variable angle supports made by cutting standard pipe to a desired height for supporting square or rectangular paving stones or other solid materials (pavers) for making a planer surface. The system includes a spacer with spacer vanes for setting spaces between stones and a web that holds the spacer vanes in relationship to each other. The spacer, consisting of the spacer vanes and the web, may sit on a base and engage with the base against any sideways forces, or a section of pipe may be inserted between them with engagement at both ends against sideways forces. The system includes several thicknesses of shims that may be added between the stone and the base or at either end of the pipe.
    Type: Application
    Filed: April 19, 2005
    Publication date: October 20, 2005
    Inventor: Woon Cheung
  • Patent number: D707376
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: June 17, 2014
    Assignee: FAP Industrial Parts Company Limited
    Inventor: Yuk Woon Cheung