Patents by Inventor Thomas J. McDonald

Thomas J. McDonald 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).

  • Brazing alloy
    Patent number: 4464442
    Abstract: A sheet of brazing alloy foil, a clad sheet of aluminum, a brazed large section structure or a method of vacuum brazing large aluminium structures utilizing a brazing alloy based on aluminium and containing 4.5 to 13.5% silicon, 0.1 to 1.5% strontium and up to 3% magnesium.
    Type: Grant
    Filed: July 13, 1983
    Date of Patent: August 7, 1984
    Assignee: IMI Marston Limited
    Inventors: Thomas J. McDonald, Christopher Follows
  • Pin stem clutch
    Patent number: 4382317
    Abstract: A pin stem clutch or securing device is disclosed which is particularly adapted to grip and hold a shank, for example a pin, the pin being utilized in an earring device, a hat ornament device or the like.
    Type: Grant
    Filed: September 10, 1981
    Date of Patent: May 10, 1983
    Assignee: Leach & Garner Company
    Inventors: Thomas J. McDonald, Robert E. Chatel