Patents by Inventor Larry Eugene Farrar, Jr.

Larry Eugene Farrar, Jr. 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).

  • Aluminum-cooper alloy
    Patent number: 5916385
    Abstract: An essentially lead-free aluminum alloy is provided for extruded screw machine stock. The alloy consists essentially of from about 4.5% to about 6% copper, a maximum of about 0.4% silicon, a maximum of about 0.7% iron, not more than about 0.3% zinc, from about 0.1% to about 1% bismuth, from about 0.1% to about 0.5% tin, balance aluminum and unavoidable impurities. The screw machine stock is prepared by extruding a homogenized billet to the desired shape, then the shape is subjected to a thermomechanical treatment involving at least one heat-treatment and cold working.
    Type: Grant
    Filed: May 7, 1998
    Date of Patent: June 29, 1999
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: Norman Leroy Coats, II, Larry Eugene Farrar, Jr.
  • Aluminum-copper alloy
    Patent number: 5803994
    Abstract: An essentially lead-free aluminum alloy is provided for extruded screw machine stock. The alloy consists essentially of from about 4.5% to about 6% copper, a maximum of about 0.4% silicon, a maximum of about 0.7% iron, not more than about 0.3% zinc, from about 0.1% to about 1% bismuth, from about 0.2% to about 0.5% tin, balance aluminum and unavoidable impurities. The screw machine stock is prepared by extruding a homogenized billet to the desired shape, then the shape is subjected to a thermomechanical treatment involving at least one heat-treatment and cold working.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: September 8, 1998
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: Norman Leroy Coats, II, Larry Eugene Farrar, Jr.