Patents by Inventor Jean-Luc Josse

Jean-Luc Josse 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: 7672434
    Abstract: An X-ray tube equipped with a rotating anode cartridge comprising a reinforced sealing system. This sealing system is achieved in three complementary manners. Firstly, when the anode rotates, in order to confine the liquid alloy within the cartridge, the invention provides to equip the two surfaces of a leak-tight joint with grooves thereby obtaining a double sided joint with an improved efficiency. Secondly, the double sided joint makes it possible to obtain, for the vacuum tightness, when the anode shaft is not rotating, two spaces limited by the surface tension of the alloy of liquid metal. The more symmetrical these two spaces, the more the sealing is reinforced. Thirdly, the invention provides to separate the ring from the axis of rotation. This enables a joint centering the two spaces in an automatic and natural manner to be obtained.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: March 2, 2010
    Assignee: General Electric Company
    Inventors: Thomas Saint-Martin, Frederic Dahan, Jean-Luc Josse, Harith Vadari
  • Publication number: 20090097616
    Abstract: An X-ray tube equipped with a rotating anode cartridge comprising a reinforced sealing system. This sealing system is achieved in three complementary manners. Firstly, when the anode rotates, in order to confine the liquid alloy within the cartridge, the invention provides to equip the two surfaces of a leak-tight joint with grooves thereby obtaining a double sided joint with an improved efficiency. Secondly, the double sided joint makes it possible to obtain, for the vacuum tightness, when the anode shaft is not rotating, two spaces limited by the surface tension of the alloy of liquid metal. The more symmetrical these two spaces, the more the sealing is reinforced. Thirdly, the invention provides to separate the ring from the axis of rotation. This enables a joint centering the two spaces in an automatic and natural manner to be obtained.
    Type: Application
    Filed: October 9, 2008
    Publication date: April 16, 2009
    Inventors: Thomas Saint-Martin, Frederic Dahan, Jean-Luc Josse, Harith Vadari
  • Publication number: 20070101794
    Abstract: A rotating anode is mounted on a shaft of an X-ray tube by means of a ring. The ring allows expansion and reduces the hyperstatic state of the assembly. The ring has the shape of a diabolo, preferably that of a hyperboloid structure generated by revolution. The ring dampens vibration phenomena in a shaft bearing the rotating anode and reduces noise-creating phenomena.
    Type: Application
    Filed: October 30, 2006
    Publication date: May 10, 2007
    Inventors: Xavier Lacherade, Caroline Le-Pierrard, Jean-Luc Josse
  • Patent number: 7149281
    Abstract: A rotating anode is mounted on a shaft of an X-ray tube by means of a ring. The ring allows expansion and reduces the hyperstatic state of the assembly. The ring has the shape of a diabolo, preferably that of a hyperboloid structure generated by revolution. The ring dampens vibration phenomena in a shaft bearing the rotating anode and reduces noise-creating phenomena.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: December 12, 2006
    Assignee: General Electric Company
    Inventors: Xavier Armand Lacherade, Caroline Le-Pierrard, Jean-Luc Josse
  • Publication number: 20040240615
    Abstract: A rotating anode is mounted on a shaft of an X-ray tube by means of a ring. The ring allows expansion and reduces the hyperstatic state of the assembly. The ring has the shape of a diabolo, preferably that of a hyperboloid structure generated by revolution. The ring dampens vibration phenomena in a shaft bearing the rotating anode and reduces noise-creating phenomena.
    Type: Application
    Filed: April 15, 2004
    Publication date: December 2, 2004
    Inventors: Xavier Armand Lacherade, Caroline Le-Pierrard, Jean-Luc Josse