Patents by Inventor Kenneth R. Lewis

Kenneth R. Lewis 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).

  • Attachment of leads to precision resistors
    Patent number: 4286249
    Abstract: A precision resistor has a thin resistive foil cemented to a much thicker rigid substrate. The foil has formed therein a pattern defining the resistive path between terminal pads. Copper leads can be spot-welded directly to these pads without damage to the junction. To that end, apertures are provided through the terminal pads, through which cement softened by the spot-welding heat can locally expand and gas evolved under pressure can escape, all without adversely affecting the junction and without substantial lifting of the terminal pads from the substrate.
    Type: Grant
    Filed: December 13, 1979
    Date of Patent: August 25, 1981
    Assignee: Vishay Intertechnology, Inc.
    Inventors: Kenneth R. Lewis, Anthony C. Meenan