Patents by Inventor Gregory L. Hoback

Gregory L. Hoback 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).

  • Shielding gas mixture for welding superalloys
    Patent number: 5083002
    Abstract: This invention discloses a novel shielding gas mixture for use in gas shielded arc welding processes. The shielding gas of this invention may be used in a wide variety of processes when welding various superalloy compositions. In the broad range, the composition contains, in percent by volume, 5 to 12 helium, 0.1 to 0.9 carbon dioxide and the balance argon. The typical composition contains about 10 helium, about 0.25 to 0.55 carbon dioxide and the balance argon plus impurities.
    Type: Grant
    Filed: January 10, 1991
    Date of Patent: January 21, 1992
    Assignee: Haynes International, Inc.
    Inventors: Gregory L. Hoback, James L. Meyers
  • Gas back-purging during welding of pipe
    Patent number: 4916281
    Abstract: Disclosed is an improvement in the process of gas back-purging the root section of the weld during open-butt welding of pipe. The rates of gas flow in back-purging and in torch shielding are controlled and a ratio between the flow rates is established. The invention teaches a gas back-purging flow rate of about 40 CFH and a torch shielding flow rate of about 10 CFH under typical conditions to maintain a required 4 to 1 ratio of the flow rates.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: April 10, 1990
    Assignee: Haynes International, Inc.
    Inventors: Lee M. Flasche, Gregory L. Hoback, James L. Meyers