Patents by Inventor Bernard Lourdeaux

Bernard Lourdeaux 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).

  • Buffer device for the spiral housings of water turbines and like machines
    Patent number: 4773820
    Abstract: A buffer device for the spiral housings of water turbines wherein the housing includes an extension located along the axis of the inlet conduit into the housing and wherein a hydraulic cylinder and piston assembly is disposed between the extension and a fixed support with a fluid conduit extending between the housing and the cavity of the hydraulic cylinder and piston assembly.
    Type: Grant
    Filed: March 10, 1987
    Date of Patent: September 27, 1988
    Assignees: Societe Neyrpic, Service Nationale Electricite de France
    Inventors: Bernard Lourdeaux, Patrick Huvet
  • Mechanism including two cut-off devices in series
    Patent number: 4276905
    Abstract: A mechanism for a hydraulic pipe comprises two rotatable cut-off devices in series arranged inside two half-shells which are arranged symmetrically, relative to a mean transverse plane, and which are connected by being bolted together by their flanges. Each half-shell supports the journals of a cut-off device and an intermediate piece may be provided for supporting center gaskets.The mechanism is particularly applicable to the protection of turbines in a high-fall hydroelectric installation.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: July 7, 1981
    Assignee: Neyrpic
    Inventor: Bernard Lourdeaux