Patents by Inventor Andrew T. Curd

Andrew T. Curd 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).

  • Portable concrete beam harping system
    Patent number: 4629408
    Abstract: A portable system for making harped, reinforced concrete beams includes a series of inverted T-shaped concrete bed sections, with aligned longitudinally extending holes for receiving tensioning cables to hold the sections together, to provide two beds, one on either side of the center wall of the sections, to make the concrete beams. At points near the center of each beam to be formed, arrangements for "harping" or depressing the longitudinally extending tensioning steel strands or cables are provided.
    Type: Grant
    Filed: September 6, 1985
    Date of Patent: December 16, 1986
    Assignee: Arctic Equipment Rental, Inc.
    Inventors: Anthony S. Giron, Andrew T. Curd