Patents by Inventor Jacques Dupaillon

Jacques Dupaillon 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).

  • Demagnetization and earthing device for a picture tube and machine for manufacturing same
    Patent number: 4812946
    Abstract: A device for demagnetization of the picture tube of a television receiver and earthing of the conductive coating applied to the cone of the tube includes a demagnetization coil system (4) constituted by a bundle of insulated electric wires held together and forming at least one loop applied to the cone of the tube. The wires of the strand are held together by a tape of plastic material wound helically around them, while a bare electric wire (1) is wound helically with the same pitch as the tape. This wire is connected to earth (15, 16).
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: March 14, 1989
    Assignee: U.S. Philips Corporation
    Inventors: Georges Prigent, Patrick Besnard, Jacques Dupaillon