Patents by Inventor Pierre Noualhagnet

Pierre Noualhagnet 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).

  • Rotating anode X-ray tube comprising anodic current flow device
    Patent number: 4964147
    Abstract: The invention relates to an X-ray tube with a rotating anode which is driven by a magnetic bearings motor. The anodic current is outflowed by a friction-type contact device which is located inside the shaft supporting the rotor of the motor. The friction contact device is actuated so as to cut off or establish an electrical contact between an inner wall of the rotor and the friction contact device.
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: October 16, 1990
    Assignee: General Electric CGR SA
    Inventors: Michel Laurent, Pierre Noualhagnet, Claude Mathieu