Patents by Inventor Francesco Di Lena

Francesco Di Lena 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).

  • Patent number: 4695193
    Abstract: A flexible structure of controlled yieldability for use as a hydrocarbon drilling and production platform in deep seas, or as a mooring point for oil tankers, constituted by a foundation base assembly, a vertical cylindrical tubular element placed under tension by a buoyancy chamber disposed at its top in proximity to the water surface, and an overlying lattice which at its top supports the plant platform.The tubular element is connected at its lower end to the base and at its upper end to the buoyancy chamber by means of suitable profiled tapered terminal elements able to withstand the bending loads which are generated at said connections.The entire structure is constituted by four separate pieces, namely the foundation base assembly with the lower terminal element, the lower half of the cylindrical tubular element, the upper half thereof, and the upper buoyancy chamber which is connected at one end to the upper terminal connection element and at the other end to the top lattice.
    Type: Grant
    Filed: April 30, 1984
    Date of Patent: September 22, 1987
    Assignee: Tecnomare S.p.A.
    Inventors: Gaetano Sebastiani, Roberto Brandi, Francesco Di Lena, Silvestro Vanore, Roberto Carraro
  • Patent number: 4543014
    Abstract: A monolithic structure for off-shore mooring composed of a broadened foundation (2) and an emerging vertical structure (1) having a very slender character and a flexural resistance modulus decreasing from the bottom towards the surface. This structure has a buoyancy chamber (15) placed in a submerged position and close to the top end.
    Type: Grant
    Filed: June 29, 1982
    Date of Patent: September 24, 1985
    Assignee: Norsk Agip A/S
    Inventors: Roberto Brandi, Francesco Di Lena, Silvestro Vanore, Tor Naess, Paul U. Schamaun