Patents by Inventor Olivier Richard Lefebvre

Olivier Richard Lefebvre 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).

  • Rotating front part of an aircraft turbomachine intake, of improved design permitting repeated removal of the cone tip
    Patent number: 10669011
    Abstract: The invention relates to a rotating front part of an aircraft turbomachine intake comprising bolts for attaching a cone tip to an internal support, each bolt comprising a rear end that is screwed into the support and a front end that receives a clamping nut, a rotation-prevention portion of non-circular cross section of each bolt engaging with a hole of corresponding cross section of a rotation-prevention ring. Also provided are extraction bolts, of which a rear end is screwed into the filling piece, each bolt passing through a cone tip flange. Finally, the invention is configured such that, after removal of the nuts, forward tension on the bolts allows the removal of an assembly comprising the tip and the filling piece, while keeping the bolts screwed to the support.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: June 2, 2020
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Sylvie Judith Devaux, Pierre Yves Heinry, Olivier Richard Lefebvre
  • ROTATING FRONT PART OF AN AIRCRAFT TURBOMACHINE INTAKE, OF IMPROVED DESIGN PERMITTING REPEATED REMOVAL OF THE CONE TIP
    Publication number: 20190127045
    Abstract: The invention relates to a rotating front part of an aircraft turbomachine intake comprising bolts for attaching a cone tip to an internal support, each bolt comprising a rear end that is screwed into the support and a front end that receives a clamping nut, a rotation-prevention portion of non-circular cross section of each bolt engaging with a hole of corresponding cross section of a rotation-prevention ring. Also provided are extraction bolts, of which a rear end is screwed into the filling piece, each bolt passing through a cone tip flange. Finally, the invention is configured such that, after removal of the nuts, forward tension on the bolts allows the removal of an assembly comprising the tip and the filling piece, while keeping the bolts screwed to the support.
    Type: Application
    Filed: May 9, 2017
    Publication date: May 2, 2019
    Inventors: Sylvie Judith DEVAUX, Pierre Yves HEINRY, Olivier Richard LEFEBVRE
  • Retaining arrangement for a bearing, in particular for a high pressure compressor shaft
    Patent number: 6338578
    Abstract: A retaining arrangement is provided for retaining a bearing around a stub shaft having a machined cavity and which includes a ring forming a stop for the bearing nut and a locking piece.
    Type: Grant
    Filed: May 17, 2000
    Date of Patent: January 15, 2002
    Assignee: Societe Nationale d'etude et de Construction de Moteurs d'Aviation “Snecma”
    Inventors: Danielle Christiane Roberte Adde, Jean-Louis Bertrand, Gérard Jean Lavigne, Olivier Richard Lefebvre