Patents by Inventor Tom P. Hamilton

Tom P. Hamilton 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).

  • Opening for injecting a protective gas into a casting tube
    Patent number: 4519438
    Abstract: A casting tube 8 of a refractory material comprises at its upper end a series of openings for the injection of a protective gas, for example argon, to create an atmosphere which protects the incoming molten metal against oxidation and cools the walls of the casting tube. The injection openings are grooves 11 formed in an upper frustoconical part of the casting tube, whose outer surface defines a fixing collar. These grooves are interconnected by an annular passage 12.
    Type: Grant
    Filed: May 13, 1983
    Date of Patent: May 28, 1985
    Assignee: Vesuvius International Corporation
    Inventors: Roberto Grosso, Tom P. Hamilton