Patents by Inventor Edwal F. Paiva Filho

Edwal F. Paiva Filho 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).

  • System for tensioning risers by means of articulated grid
    Patent number: 5427180
    Abstract: Basically the system consists of a supporting structure (1) lying in an opening in floating vessel (9) to which a group of risers (3) is connected running from sea bottom to sea surface, linking undersea oil wells to their respective production trees (5) which lie on floating vessel (9), said supporting structure (1) being provided with ball joints that enable a group of risers (3) to articulate in relation to supporting structure (1), and slide blocks to enable said supporting structure to be connected/articulated to floating vessel (9).
    Type: Grant
    Filed: April 20, 1994
    Date of Patent: June 27, 1995
    Assignees: Petroleo Brasileiro S.A.-Petrobras, Paul Munroe Engineering
    Inventors: Andre J. dePaiva Leite, Edwal F. Paiva Filho, David Cardellini, Jeffrey P. Taylor