Patents by Inventor Donald G. Harrington

Donald G. Harrington 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).

  • Method and apparatus for continuous casting of metals
    Patent number: 6581675
    Abstract: An apparatus and method for strip casting of metals on at least one endless belt. The apparatus employs a tapered molding section that is large at the point of molten metal entry and tapers to a smaller thickness where a pair of pinch rolls apply a compressive force that sets the final thickness of the cast strip.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: June 24, 2003
    Assignee: Alcoa Inc.
    Inventor: Donald G. Harrington
  • Method of manufacturing aluminum alloy sheet
    Patent number: 6391127
    Abstract: A method for manufacturing aluminum sheet stock which includes hot rolling an aluminum alloy sheet stock, quenching and coiling the feedstock. Then, in a second sequence, the feedstock is uncoiled, annealed and quenched to a temperature for cold rolling.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: May 21, 2002
    Assignee: Alcoa Inc.
    Inventors: Gavin F. Wyatt-Mair, Donald G. Harrington, Ian Smith, William Betts
  • Method and apparatus for continuous casting of metals
    Patent number: 6102102
    Abstract: A metal strip is continuously cast between a pair of heat conductive endless belts which serve to form a molding zone to solidify molten metal. The endless belts remove heat from the molten metal and are cooled when the belts are not in contact with the molten metal, which minimizes belt distortion.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: August 15, 2000
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventor: Donald G. Harrington
  • Method of manufacturing casting belts for use in the casting of metals
    Patent number: 6063215
    Abstract: A belt for use in the casting of metals and a method for its manufacture in which a metal belt is first subjected to heat treatment, quenching and tempering to improve its strength and decrease its stretchability. Then the belt is treated to introduce surface irregularities to promote uniformity of heat transfer and to allow collection of surface gases and then the belt is subjected to further thermal treatment under controlled conditions to form an oxide layer thereon to minimize adhesion between the belt and the metal deposited thereon.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: May 16, 2000
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventor: Donald G. Harrington
  • Method and apparatus for controlling the gap in a strip caster
    Patent number: 6044896
    Abstract: A device to control the gap in between two drums or belts that are used in a strip casting apparatus. It comprises a means to move either side of the drums or belts in two planes. This ability enables the operator to control the gap to provide flexibility and increased performance during casting.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: April 4, 2000
    Assignee: Alcoa Inc.
    Inventor: Donald G. Harrington
  • Method and apparatus for twin belt casting of strip
    Patent number: 5564491
    Abstract: An apparatus and method for strip casting of metals on at least one endless belt whereby the belt is cooled when it is not in contact with molten metal deposited on its surface.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: October 15, 1996
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventor: Donald G. Harrington
  • Method and apparatus for twin belt casting of strip
    Patent number: 5515908
    Abstract: An apparatus and method for strip casting of metals on at least one endless belt whereby the belt is cooled when it is not in contact with molten metal deposited on its surface.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: May 14, 1996
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventor: Donald G. Harrington
  • Method of manufacturing aluminum alloy sheet
    Patent number: 5514228
    Abstract: A method for manufacturing aluminum sheet stock which includes hot rolling an aluminum alloy sheet stock, annealing and solution heat treating it without substantial intermediate cooling and rapid quenching.
    Type: Grant
    Filed: June 23, 1992
    Date of Patent: May 7, 1996
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: Gavin F. Wyatt-Mair, Donald G. Harrington
  • Method of manufacturing aluminum sheet stock using two sequences of continuous, in-line operations
    Patent number: 5496423
    Abstract: A method for manufacturing aluminum alloy sheet stock including two sequences of continuous, in-line operations. The first sequence includes the continuous, in-line steps of hot rolling, coiling, coil self-annealing and the second sequence includes the continuous, in-line steps of uncoiling, quenching without intermediate cooling, cold rolling, and coiling.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: March 5, 1996
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: Gavin F. Wyatt-Mair, Donald G. Harrington
  • Method of manufacturing can body sheet
    Patent number: 5470405
    Abstract: A method for manufacturing aluminum alloy can body stock including a continuous, in-line sequence of hot rolling, annealing and solution heat treating without intermediate cooling and rapid quenching.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: November 28, 1995
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: Gavin F. Wyatt-Mair, Donald G. Harrington
  • Method of manufacturing can body sheet using two sequences of continuous, in-line operations
    Patent number: 5356495
    Abstract: A method for manufacturing aluminum alloy can body stock including two sequences of continuous, in-line operations. The first sequence includes the continuous, in-line steps of hot rolling, coiling, coil self-annealing and the second sequence includes the continuous, in-line steps of uncoiling, quenching without intermediate cooling, cold rolling, and coiling.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: October 18, 1994
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: Gavin F. Wyatt-Mair, Donald G. Harrington