Patents by Inventor Douglas J. Robbins

Douglas J. Robbins 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).

  • Thermoplastic acrylic coated steel sheet
    Patent number: 5248528
    Abstract: Zinc or zinc alloy plated steel sheet ready for deep drawing coated with 1-5 gm/m.sup.2 of a dry, tack free continuous thermoplastic acrylic coating. The coating is formed by inductively heating the sheet to a temperature of about 149.degree.-246.degree. C. for no more than 10 seconds after being roll coated with a continuous liquid film of an aqueous solution including an acrylic polymer. The acrylic coating forms a protective film that is impervious to moisture, oil, and dirt, is able to be welded and adhesively bonded and possesses sufficient toughness and lubricity to allow deformation of the sheet without additional external lubricant. A deep drawn article formed from the sheet has enhanced painting characteristics after the acrylic coating is removed and the article is coated with a phosphate coating.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: September 28, 1993
    Assignee: Armco Steel Company, L.P.
    Inventors: Douglas J. Robbins, Cynthia A. Gosselin, Frederick A. Myers
  • Thermoplastic acrylic coated steel sheet
    Patent number: 5151297
    Abstract: Zinc or zinc alloy plated steel sheet ready for deep drawing coated with 1-5 gm/m.sup.2 of a dry, tack free continuous thermoplastic acrylic coating. The coating is formed by inductively heating the sheet to a temperature of about 149.degree.-246.degree. C. for no more than 10 seconds after being roll coated with a continuous liquid film of an aqueous solution including an acrylic polymer. The acrylic coating forms a protective film that is impervious to moisture, oil, and dirt, is able to be welded and adhesively bonded and possesses sufficient toughness and lubricity to allow deformation of the sheet without additional external lubricant. A deep drawn article formed from the sheet has enhanced painting characteristics after the acrylic coating is removed and the article is coated with a phosphate coating.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: September 29, 1992
    Assignee: Armco Steel Company, L.P.
    Inventors: Douglas J. Robbins, Cynthia A. Gosselin, Frederick A. Myers
  • Apparatus for producing one-side electroplated steel strip with enhanced phosphatability
    Patent number: 4814054
    Abstract: Producing one-side zinc electroplated strip having enhanced phosphating characteristics. Prior to electroplating, the non-electroplated side of the steel strip is cathodically pickled. Cathodic pickling minimizes staining and etching to the non-electroplated strip surface by the zinc electrolyte during electroplating of the opposite strip surface.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: March 21, 1989
    Assignee: Armco Inc.
    Inventors: Timothy R. Roberts, David M. Smith, Alan F. Gibson, Douglas J. Robbins
  • Method and apparatus for producing one-side electroplated steel strip with enhanced phosphatability
    Patent number: 4808278
    Abstract: Producing one-side zinc electroplated strip having enhanced phosphating characteristics. Prior to electroplating, the non-electroplated side of the steel strip is cathodically pickled. Cathodic pickling minimizes staining and etching to the non-electroplated strip surface by the zinc electrolyte during electroplating of the opposite strip surface.
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: February 28, 1989
    Assignee: Armco Inc.
    Inventors: Timothy R. Roberts, David M. Smith, Alan F. Gibson, Douglas J. Robbins