Patents by Inventor Pierre Noualhaguet

Pierre Noualhaguet 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).

  • Weight compensation device for X-ray tube comprising passive magnetic bearings
    Patent number: 5117448
    Abstract: In an X-ray tube wherein the rotor is supported by passive magnetic bearings, the respective positions of which are such that the rotor is offset in the direction opposite that of the anode, the bearings are mounted on an elastic system which has the effect of compensating for the axial component of the weight of the rotor and of the anode should the tube be tilted.
    Type: Grant
    Filed: March 20, 1991
    Date of Patent: May 26, 1992
    Assignee: General Electric CGR S.A.
    Inventors: Jean-Marie Penato, Pierre Noualhaguet, Michel Laurent
  • System for the suspension of a rotating anode of an x-ray tube with passive magnetic bearings
    Patent number: 5010563
    Abstract: The disclosure concerns rotating-anode type X-ray tubes. According to the disclosure, the rotor is supported by passive magnetic bearings, the respective positions of which are such that the rotor is shifted in the direction opposite to that of the anode. The rotor is kept shifted by a thrust-bearing acts, at the same time, as an electrical conductor for the anode current.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: April 23, 1991
    Assignee: General Electric CGR S.A.
    Inventors: Michel Laurent, Marc Doukhan, Pierre Noualhaguet
  • Rotating anode for X-ray tube
    Patent number: 4991194
    Abstract: The invention relates to a rotating anode for an X-ray tube, which avoids the anarchical generation of cracks in a target carried by the anode. For this purpose, at least a part of a target area is carved by a plurality of radial slots arranged symmetrically with respect to an axis of symmetry of the anode. The depth of the slots is less than the thickness of the target.
    Type: Grant
    Filed: December 29, 1988
    Date of Patent: February 5, 1991
    Assignee: General Electric CGR S.A.
    Inventors: Michel Laurent, Pierre Noualhaguet, Claude Mathieu