Patents by Inventor Willis E. Harbaugh

Willis E. Harbaugh 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).

  • Sputter-ion pump for use with electron tubes having thoriated tungsten cathodes
    Patent number: 4334829
    Abstract: A sputter-ion pump for use in combination with an electron tube having at least one thoriated tungsten cathode comprises a vacuum envelope and a getter-cathode within the envelope. The getter cathode comprises a first cathode member consisting of at least one reactive material selected from the group consisting of titanium, zirconium, thorium, tantalum, niobium and vanadium. A second cathode member, consisting, e.g., of a reactive material and carbon, provides a recarburizing atmosphere for forming, in situ, a tungsten carbide layer on the thoriated tungsten cathode of the electron tube so as to increase the life of the electron tube.
    Type: Grant
    Filed: February 15, 1980
    Date of Patent: June 15, 1982
    Assignee: RCA Corporation
    Inventor: Willis E. Harbaugh