Patents by Inventor Jean-Paul Henon

Jean-Paul Henon 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 forming heat engine parts made of a superalloy and having a metallic-ceramic protective coating
    Patent number: 5124006
    Abstract: A method for coating a heat engine part, particularly a turbo-machine part made of a superalloy and adapted for use in aeronautical applications, comprises electrophoretically depositing a metallic structure of cellular form with uniformly disposed cells of predetermined size. The deposition is performed using an electrophoresis bath containing methanol, aluminum chloride as an electrolyte, and a powder containing Cr, Al, Y, Ta and Ni. The cellular metallic structure is consolidated by a sintering treatment, which may be reactive, or metallization, preferably in the vapor phase, and the coating is completed by applying a ceramic material by plasma spraying.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: June 23, 1992
    Assignees: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A.", Association pour la Recherche et le Developpement des Methodes et Processus Industriels A.R.M.I.N.E.S.
    Inventors: Dominque M. M. Fayeulle, Jean-Paul Henon, Rene J. Morbioli
  • Heat engine parts made of alloy and having a metallic-ceramic protective coating and method of forming said coating
    Patent number: 5057379
    Abstract: A coating for a heat engine part, particularly a turbo-machine part made of superalloy, comprises an electrophoretically deposited metallic structure of cellular form with uniformly disposed cells of predetermined size, the structure preferably being composed of M, Cr, Al, and Y, where M denotes Ni, Co, Fe and mixtures thereof. The cellular metallic structure is consolidated by a sintering treatment, which may be reactive, or metallization, preferably in the vapor phase, and the coating is completed by a ceramic material applied by plasma spraying.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: October 15, 1991
    Assignees: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A.", Association pour la Recherche et le Developpement des Methodes et Processus Industriels A.R.M.I.N.E.S.
    Inventors: Dominique M. M. Fayeulle, Jean-Paul Henon, Rene J. Morbioli
  • Method and an electronic circuit for measuring very weak signals at high voltage
    Patent number: 4780668
    Abstract: A method and an electronic circuit for measuring very weak signals at high voltage. The electronic circuit consists of a first portion (I) constituted by at least one amplifier (2) which is DC-connected directly to a source of weak signals. This amplifier is followed by at least one current amplifier (5). A second portion of the circuit (II) then transfers the amplified current signal from high potential to the ground potential of measuring apparatus by a series of transistors (12 to 14) followed by an output amplifier (22). An optional third portion (III) may be provided to sample the signal by an analog gate (25) suitably controlled from an external frequency source. This makes it possible in spectrometry to perform fast and accurate measurements on very weak signals at high potential.
    Type: Grant
    Filed: March 26, 1985
    Date of Patent: October 25, 1988
    Assignee: Association pour la Recherche et le Developpement des Methodes et Processus Industriels (ARMINES)
    Inventors: Paul Nguyen Tan Tai, Jean-Paul Henon