Patents by Inventor Theodore D. Van Zyl

Theodore D. Van Zyl 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).

  • Manufacture of electrical coils
    Patent number: 4635348
    Abstract: Electrical coils for electrical machines are prepared by forming a number of parallel conductors side by side and separating the conductors and surrounding the conductors with insulating material impregnated with thermosetting resin. The resin is cured by radiating the coil with radio frequency electro magnetic radiation.
    Type: Grant
    Filed: October 15, 1984
    Date of Patent: January 13, 1987
    Inventor: Theodore D. Van Zyl