Patents by Inventor Lake Richardson

Lake Richardson 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).

  • Concrete wall finishing machine
    Patent number: 5042208
    Abstract: A finishing machine will finish the surface texture of a concrete wall. The finishing machine has a frame with guide rails that will extend along one side of the wall. The frame extends up over the top of the wall. A wheel mounted to the upper section of the frame supports the guide rails and the frame. The wheel will roll along the top of the wall and is driven by an electric motor. A rotary drive head will rotate polishing stones for polishing the side of the wall. The lifting device will raise and lower the drive head on the guide rails.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: August 27, 1991
    Inventor: Lake Richardson