Patents by Inventor Rodney L. Boothroyd

Rodney L. Boothroyd 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).

  • Curved architectural structure of foam and cement
    Patent number: 4077177
    Abstract: A curved architectural structure is formed by tensioning a membrane into a curved shape and forming an intermediate structure conforming to the contour of the tensioned membrane by applying a rigidizing material such as foam, resin or other lightweight rigidizing material to form a rigidized curved architectural structure or form for same. Cemetitious material having discontinuous reinforcing fibers, as of steel or glass, dispersed therein is applied overlaying a surface of the rigidized structure to shape and support a curved architectural structure of reinforced cemetitious material.
    Type: Grant
    Filed: February 12, 1976
    Date of Patent: March 7, 1978
    Inventors: Rodney L. Boothroyd, Thomas E. Wedge, Harry E. Aine