Patents by Inventor Edward S. Aspindle

Edward S. Aspindle 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).

  • Electrode for tungsten inert gas welding
    Patent number: 5173581
    Abstract: A non-consumable electrode for tungsten inert gas welding. The electrode is formed from at least two portions in face-to-face relationship so as to define a longitudinal slit between them extending lengthwise of the electrode and terminating at the tip of the electrode. The slit acts as a cavity and ensures that spark initiation takes place from locations on the electrode where metal ion deposition is inhibited. The faces of the portions may be of flat form or of complementary contoured form.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: December 22, 1992
    Assignee: British Nuclear Fuels plc
    Inventor: Edward S. Aspindle