Patents by Inventor Christian Thierry Daude

Christian Thierry Daude 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).

  • Drill bit having a hemispherical head with an evolutive cut
    Patent number: 5725338
    Abstract: The cutting end or head of a helically grooved drill bit is of generally hemispherical shape and has four cutting lips, two of which are disposed in end-to-end relationship at the point S of the bit. The cutting angle of the edge of each lip is evolutive, varying from 0.degree. at the point S to a value, determined experimentally in accordance with the material to be machined, at a position P at the intersection of the cutting edge with the end of the outer diameter d of the bit.
    Type: Grant
    Filed: January 8, 1997
    Date of Patent: March 10, 1998
    Assignee: Societe Nationale D'Etude Et De Construction De Moteurs D'Aviation "Snecma"
    Inventors: Maurice Jean Cabaret, Christian Thierry Daude, Daniel Marcel Eugene Lavocat, Jean Pierre Leboulanger, Michel Lebrun, Fran.cedilla.ois Masson, Gilles Rouge, Bernard Gilbert Roy