Patents by Inventor Michel E. M. Lemaoult

Michel E. M. Lemaoult 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).

  • Process for detection of rotating stall
    Patent number: 4430855
    Abstract: A process and a device for detecting a rotating stall in a turbojet engine having two rotating spools including a high pressure spool and a low pressure spool, wherein the rotation speed (N.sub.HP, N.sub.BP) of each of said spools is measured, and the derivative relative to time dN.sub.HP /dt of the rotation speed (N.sub.HP) of the high pressure spool is derived. A command signal is generated as soon as the following conditions are met: ##EQU1## where A, B and C are constant values.
    Type: Grant
    Filed: August 13, 1981
    Date of Patent: February 14, 1984
    Assignee: SNECMA
    Inventors: Pierre E. Deneux, Patrick J. Faure, Denis R. G. Laffitte, Michel E. M. Lemaoult