Patents by Inventor Hakim Hoffmann

Hakim Hoffmann 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).

  • Patent number: 7404860
    Abstract: The invention relates to a device and method for controlling the operation of a thermal spray torch (12). The inventive device and method are characterized in that an on-board camera (54) and pyrometer (70) are used to measure the properties of the jet (16) and the temperature of the deposit (24) on the part (22) and in that the correction to be made to supply parameters of the torch (12) is deduced. Furthermore, the invention is characterized in that the corrected parameters are sent to the cabinet (30) that controls the torch (12).
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: July 29, 2008
    Assignee: Snecma Services
    Inventors: Michel Vardelle, Thierry Renault, Cédric Bossoutrot, Frédéric Braillard, Hakim Hoffmann
  • Patent number: 7332036
    Abstract: The invention relates to a device and a method for control of the operation of a thermal projection torch (12), characterized in that the characteristics of the jet (16) and the temperature of the deposit (24) on the piece (22) are measured by means of a camera (54) and a combined pyrometer (70). The correction to be made to the supply parameters of the torch (12) are deduced therefrom and the corrected parameters are transmitted to the unit (30) controlling the torch (12).
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: February 19, 2008
    Assignee: Snecma Services
    Inventors: Michel Vardelle, Thierry Renault, Cédric Bossoutrot, Frédéric Braillard, Hakim Hoffmann
  • Patent number: 7323061
    Abstract: The invention relates to a device and method for controlling the operation of a thermal spray torch (12). The inventive device and method are characterised in that an on-board camera (54) and pyrometer (70) are used to measure the properties of the jet (16) and the temperature of the deposit (24) on the part (22) and in that the correction to be made to the supply parameters of the torch (12) is deduced. Furthermore, the invention is characterised in that the corrected parameters are sent to the cabinet (30) that controls the torch (12).
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: January 29, 2008
    Assignee: SNECMA Services
    Inventors: Michel Vardelle, Thierry Renault, Cédric Bossoutrot, Frédéric Braillard, Hakim Hoffmann
  • Patent number: 7323062
    Abstract: The invention relates to a device and a method for control of the operation of a thermal projection torch (12), characterized in that the characteristics of the jet (16) and the temperature of the deposit (24) on the piece (22) are measured by means of a camera (54) and a combined pyrometer (70). The correction to be made to the supply parameters of the torch (12) are deduced therefrom and the corrected parameters are transmitted to the unit (30) controlling the torch (12).
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: January 29, 2008
    Assignee: Snecma Services
    Inventors: Michel Vardelle, Thierry Renault, Cédric Bossoutrot, Frédéric Braillard, Hakim Hoffmann
  • Publication number: 20050223977
    Abstract: The invention relates to a device and method for controlling the operation of a thermal spray torch (12). The inventive device and method are characterized in that an on-board camera (54) and pyrometer (70) are used to measure the properties of the jet (16) and the temperature of the deposit (24) on the part (22) and in that the correction to be made to supply parameters of the torch (12) is deduced. Furthermore, the invention is characterized in that the corrected parameters are sent to the cabinet (30) that controls the torch (12).
    Type: Application
    Filed: February 28, 2003
    Publication date: October 13, 2005
    Inventors: Michel Vardelle, Thierry Renault, Cedric Bossoutrot, Frederic Braillard, Hakim Hoffmann
  • Publication number: 20050199603
    Abstract: The invention relates to a device and a method for control of the operation of a thermal projection torch (12), characterized in that the characteristics of the jet (16) and the temperature of the deposit (24) on the piece (22) are measured by means of a camera (54) and a combined pyrometer (70). The correction to be made to the supply parameters of the torch (12) are deduced therefrom and the corrected parameters are transmitted to the unit (30) controlling the torch (12).
    Type: Application
    Filed: February 28, 2003
    Publication date: September 15, 2005
    Inventors: Michel Vardelle, Thierry Renault, Cedric Bossoutrot, Fedreric Braillard, Hakim Hoffmann
  • Publication number: 20050120952
    Abstract: The invention relates to a device and a method for control of the operation of a thermal projection torch (12), characterized in that the characteristics of the jet (16) and the temperature of the deposit (24) on the piece (22) are measured by means of a camera (54) and a combined pyrometer (70). The correction to be made to the supply parameters of the torch (12) are deduced therefrom and the corrected parameters are transmitted to the unit (30) controlling the torch (12).
    Type: Application
    Filed: February 28, 2003
    Publication date: June 9, 2005
    Applicant: Snecma Services
    Inventors: Michel Vardelle, Thierry Renault, Cedric Bossoutrot, Frederic Braillard, Hakim Hoffmann
  • Publication number: 20050115500
    Abstract: The invention relates to a device and method for controlling the operation of a thermal spray torch (12). The inventive device and method are characterised in that an on-board camera (54) and pyrometer (70) are used to measure the properties of the jet (16) and the temperature of the deposit (24) on the part (22) and in that the correction to be made to the supply parameters of the torch (12) is deduced. Furthermore, the invention is characterised in that the corrected parameters are sent to the cabinet (30) that controls the torch (12).
    Type: Application
    Filed: February 28, 2003
    Publication date: June 2, 2005
    Inventors: Michel Vardelle, Thierry Renault, Cedric Bossoutrot, Fedreric Braillard, Hakim Hoffmann
  • Patent number: 6536109
    Abstract: A method for extending the life of the attachments that attach blades to rotors, particularly for aerojet engines. Such a method is notable in that it employs intensive ultrasonic peening of the grooves and of the roots of the blades, this peening being performed with an Almen intensity at least equal to F8A, so as to increase the compressive prestress in the contact surfaces without increasing the roughness of these surfaces.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: March 25, 2003
    Assignees: Snecma Moteurs, Snecma Services
    Inventors: Benoît Jean Henri Berthelet, Francis Lucien Guy Chareyre, Willy Lionel Fradin, Hakim Hoffmann, Stéphane Michel Kerneis, Marie-Christine Marcelle Ntsama-Etoundi, Guillaume François Roger Simon
  • Patent number: 6508093
    Abstract: The invention relates to a method for the ultrasonic peening of annular recesses for the attachment of blades to a rotor rim, these recesses including a blade introduction opening. According to the method, a plurality of beads is placed on a vibratory surface of a sonotrode, arranged in an intermediate position in a sleeve having opposed closing-off means capable of sliding in the recess, the introduction opening is placed facing the sonotrode, the sonotrode and the sleeve are moved together toward the introduction opening into a peening position in which the closing-off means face the recess ends opening into said opening, then the rotor rim is turned about its axis so as to bring the closing-off means into a first end of the recess so as to form a closed chamber containing the beads. The rim is turned and the vibratory surface is vibrated to mobilize the beads within the chamber, thereby peening the recess.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: January 21, 2003
    Assignee: Snecma Moteurs and Snecma Services
    Inventors: Benoît Jean Henri Berthelet, Francis Lucien Guy Chareyre, Willy Lionel Fradin, Hakim Hoffmann, Stéphane Michel Kerneis, Marie-Christine Marcelle Ntsama-Etoundi, Guillaume François Roger Simon
  • Patent number: 6505489
    Abstract: The invention relates to an apparatus and to a method for the surface treatment and compressive prestressing by peening of a wall of at least one oblong cavity formed in a part, said cavity opening to the outside via a lateral mouth and having two ends presenting frontal openings. The wall of the cavity is ultrasonically peened by mobilizing a plurality of beads in a chamber delimited by said wall of said cavity, a vibratory surface closing off said mouth of said cavity, and closing-off means closing off said openings, by means of a sonotrode excited by means for producing ultrasonic oscillations. The method and the apparatus are particularly intended for treating a turbine disk comprising a number of axial recesses formed in the periphery of said disk and having wall portions which diverge from each mouth.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: January 14, 2003
    Assignees: SNECMA Moteurs, SNECMA Services
    Inventors: Benoît Jean Henri Berthelet, Francis Lucien Guy Chareyre, Willy Lionel Fradin, Hakim Hoffmann, Stéphane Michel Kerneis, Marie-Christine Marcelle Ntsama-Etoundi, Guillaume François Roger Simon
  • Patent number: 6490899
    Abstract: A method for peening the tops of cooled blades which include cooling air passage orifices. Peening is performed by mobilization of a plurality of beads in a sealed chamber containing at least one blade tip. The plurality of beads is mobilized by the active surface of a sonotrode which delimits part of said chamber. The beads have a diameter greater than that of the cooling air passage orifices.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: December 10, 2002
    Assignees: SNECMA Moteurs, SNECMA Services
    Inventors: Benoît Jean Henri Berthelet, Francis Lucien Guy Chareyre, Willy Lionel Fradin, Hakim Hoffmann, Stéphane Michel Kerneis, Marie-Christine Marcelle Ntsama-Etoundi, Guillaume François Roger Simon
  • Publication number: 20020124402
    Abstract: A method for extending the life of the attachments that attach blades to rotors, particularly for aerojet engines. Such a method is notable in that it employs intensive ultrasonic peening of the grooves and of the roots of the blades, this peening being performed with an Almen intensity at least equal to F8A, so as to increase the compressive prestress in the contact surfaces without increasing the roughness of these surfaces.
    Type: Application
    Filed: November 16, 2001
    Publication date: September 12, 2002
    Applicant: SNECMA MOTEURS
    Inventors: Benoit Jean Henri Berthelet, Francis Lucien Guy Chareyre, Willy Lionel Fradin, Hakim Hoffmann, Stephane Michel Kerneis, Marie-Christine Marcelle Ntsama-Etoundi, Guillaume Francois Rocher Simon
  • Publication number: 20020069687
    Abstract: The invention relates to a method for the ultrasonic peening of annular recesses for the attachment of blades to a rotor rim, these recesses including a blade introduction opening. According to the method, a plurality of beads is placed on a vibratory surface of a sonotrode, arranged in an intermediate position in a sleeve having opposed closing-off means capable of sliding in the recess, the introduction opening is placed facing the sonotrode, the sonotrode and the sleeve are moved together toward the introduction opening into a peening position in which the closing-off means face the recess ends opening into said opening, then the rotor rim is turned about its axis so as to bring the closing-off means into a first end of the recess so as to form a closed chamber containing the beads. The rim is turned and the vibratory surface is vibrated to mobilize the beads within the chamber, thereby peening the recess.
    Type: Application
    Filed: November 16, 2001
    Publication date: June 13, 2002
    Applicant: SNECMA MOTEURS
    Inventors: Benoit Jean Henri Berthelet, Francis Lucien Guy Chareyre, Willy Lionel Fradin, Hakim Hoffmann, Stephane Michel Kerneis, Marie-Christine Marcelle Ntsama-Etoundi, Guillaume Francois Rocher Simon
  • Publication number: 20020056303
    Abstract: A method for peening the tops of cooled blades which include cooling air passage orifices. Peening is performed by means of the mobilization of a plurality of beads in a sealed chamber containing at least one blade tip. Said plurality of beads is mobilized by the active surface of a sonotrode which delimits part of said chamber. Said beads have a diameter greater than that of said cooling air passage orifices.
    Type: Application
    Filed: November 16, 2001
    Publication date: May 16, 2002
    Applicant: SNECMA MOTEURS
    Inventors: Benoit J. H. Berthelet, Francis L. G. Chareyre, Willy L. Fradin, Hakim Hoffmann, Stephane Michel Kerneis, Marie-Christine M. Ntsama-Etoundi, Guillaume F. R. Simon