Patents by Inventor Alain Errard

Alain Errard 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).

  • Method of winding an electrical coil as successive oblique layers of coil turns
    Patent number: 5305961
    Abstract: An electrical coil is created by winding an electrical coil as successive parallel oblique layers of coil turns projecting radially outwardly from a coil former about which the coil turns are wound with the coil turns positioned radially outward of the coil former axis. The winding forms in radial cross-section, a triangle having a base situated against the coil former, a second side constituting an oblique rising edge and a third oppositely oblique side. Alternately upward and downward oblique coil turn layers are successively wound to advance the coil progressively along the axis of the former.
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: April 26, 1994
    Assignee: GEC Alsthom SA
    Inventors: Alain Errard, Roger Bourgeon