Patents by Inventor Andre J. Richard

Andre J. Richard 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).

  • Method of constructing reinforced concrete bridges
    Patent number: 4192120
    Abstract: In a method of constructing a reinforced concrete bridge a supporting arch s erected which comprises a cocked center part of which forms a supporting reinforcement intended to be incorporated in the concrete of the final bridge structure. Shuttering is placed in position on the arch and the concrete poured to embody the supporting reinforcement and constitute the deck of the bridge. The resultant deck is formed by a ribbed slab, by girders connected by a slab, or by at least one box. After the concrete has hardened the remaining exterior part of the arch is removed, and if required additional reinforcement may be embodied in the concrete.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: March 11, 1980
    Assignee: Entreprises de Travaux Publics et Prives J. Richard Societe Anonyme
    Inventors: Andre J. Richard, Philippe M. Delmotte, Pierre A. Parthoens