Patents by Inventor Bernard Etienne

Bernard Etienne 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: 4632172
    Abstract: In the centrifugal casting of iron pipes, molten metal from a tilt ladle 13 is supplied to an inclined pour trough or channel 14 whose outlet nose 16 is relatively axially movable within a rotating mold 3. To compensate for the reduction in the hydrostatic thrust of the molten metal in the pour channel when the metal supply is terminated near the end of the casting operation, the inclination of the channel 14 is gradually increased to thereby maintain a constant flow rate at the nose 16. Further, to compensate for the reduction of the height of fall due to the tilting of the pour channel and the attendant lowering of the downwardly sloping nose, the point of articulation 22 of the channel 14 within the mold is also raised in synchronism with the increased tilting of the channel.
    Type: Grant
    Filed: March 13, 1985
    Date of Patent: December 30, 1986
    Assignee: Pont-a-Mousson S.A.
    Inventors: Bernard Etienne, Michel Francois, Michel Pierrel