Patents by Inventor Frederic G. J. Mainfroy

Frederic G. J. Mainfroy 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).

  • Turbine engine stator with pivoting blades and control ring
    Patent number: 5466122
    Abstract: A turbine engine stator has a metal casing surrounding an envelope carrying bearings for the pivots of pivoting blades. A control mechanism for setting the position of the blades includes a radial spindle to which are transmitted the thrust forces of the gases, the envelope being advantageously formed from angular sectors of axially juxtaposed flanges or rings and which are not loaded. Therefore, the bearings are not subject to wear giving rise to gas leaks and efficiency losses. Advantageously, the envelope is made from a composite material.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: November 14, 1995
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation "SNECMA"
    Inventors: Jean-Louis Charbonnel, Philippe Guerout, Jacques L. Happey, Frederic G. J. Mainfroy, Jacky Naudet, Jean-Claude Porcher