Patents by Inventor Frederick S. Safran

Frederick S. Safran 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).

  • Composite electrical conductor cable having internal magnetic flux shield
    Patent number: 5530203
    Abstract: A multiple conductor composite electrical cable has a braided steel shield about internally disposed power wires and multiple signal wires arranged radially external of the steel shield, whereby magnetic lines of flux from the power wires are contained within a center axial core of the composite cable defined by the steel shield to eliminate signal interference caused by coupling of magnetic flux with signal conducting wires disposed radially external of the power wires and steel shield.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: June 25, 1996
    Assignee: Rotor Tool Company
    Inventors: Joseph W. Adams, Frederick S. Safran