Patents by Inventor Bernard Armand Rene Costeplane

Bernard Armand Rene Costeplane 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).

  • Progressive hot twisting apparatus for use in a process for manufacturing a hollow turbomachine blade
    Patent number: 6242715
    Abstract: An apparatus for manufacturing a hollow turbomachine blade made from a titanium alloy of the TA6V type includes a hot twisting step in which an element of the blade is twisted progressively at a temperature above 700° C. by a plurality of bars which are rotated about the twist axis and act on collars previously fixed to the element, the distribution and number of collars being determined according to the desired twist to be imparted and such as to obtain a linear twist development between each collar.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: June 5, 2001
    Assignees: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation “Snecma”, Etablissements Robert Creuzet
    Inventors: Mathieu Philippe Albert Bichon, Bernard Armand René Costeplane, Alain Georges Henri Lorieux
  • Process for manufacturing a hollow turbomachine blade and progressive hot twisting apparatus for use in said process
    Patent number: 5933952
    Abstract: A process for manufacturing a hollow turbomachine blade made from a titanium alloy of the TA6V type includes a hot twisting step in which an element of the blade is twisted progressively at a temperature above 700.degree. C. by a plurality of bars which are rotated about the twist axis and act on collars previously fixed to the element, the distribution and number of collars being determined according to the desired twist to be imparted and such as to obtain a linear twist development between each collar. Hot twisting apparatus for use in carrying out the operation is also described.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: August 10, 1999
    Assignees: Societe Nationale D'etude et de Construction de Moteurs D'aviation "snecma", Etablissements Robert Creuzet
    Inventors: Mathieu Philippe Albert Bichon, Bernard Armand Rene Costeplane, Alain Georges Henri Lorieux