Patents by Inventor Jean-Pierre Leboulanger

Jean-Pierre Leboulanger 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).

  • METHOD OF MACHINING SLOTS IN A TURBINE DISK OF A TURBINE ENGINE
    Publication number: 20130064619
    Abstract: A machining method for machining peripheral slots in a disk of a turbine of a turbine engine, such as an airplane turboprop or turbojet, the method including: machining the slots by reaming using a substantially cylindrical reamer of length greater than an axial thickness of the disk, and extending substantially parallel to the axis of the disk, outlines of the slots being machined by moving the reamer perpendicularly to its axis along the profile of each slot.
    Type: Application
    Filed: May 12, 2011
    Publication date: March 14, 2013
    Applicant: SNECMA
    Inventors: Olivier Belmonte, Jean-Pierre Leboulanger, Bruno Varone, Lionel Rene Henri Weller
  • 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
  • Process for machining titanium parts using separate biased spraying collar
    Patent number: 5718156
    Abstract: A process for machining titanium or titanium alloy parts with a cutting speed exceeding 150 m/min which uses spraying or sprinkling of lubricating fluid under very high pressures (60 to 400 bars). The main component is a spraying flange or collar having internal ducts making it possible to supply under high pressure one or more fluid jets in the direction of the edge of the cutting tip.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: February 17, 1998
    Assignee: Societe Nationale d'etude et de Construction de Monteurs d'Aviation "Snecma"
    Inventors: Serge Pierre Jean Lagrolet, Jean-Pierre Leboulanger, Serge Andre Marcel Vallet