Patents by Inventor Robert J. Walton

Robert J. Walton 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).

  • Insulated building block
    Patent number: 4134241
    Abstract: A hollow building block filled with insulation is shaped as a pair of proximal but offset rectangles thereby to form steps at diagonal corners for fitting adjoining blocks together. A continuous insulation effect is obtained because the insulation in each rectangle extends beyond that of its proximal rectangle and overlaps with the insulation in the proximal rectangle of each adjoining block. Aligning holes and reinforcing grooves are provided for rapidly constructing strong structures from the blocks.
    Type: Grant
    Filed: July 7, 1977
    Date of Patent: January 16, 1979
    Assignee: Energy Block Ltd.
    Inventor: Robert J. Walton