Patents by Inventor Lloyd E. Cockerham

Lloyd E. Cockerham 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).

  • Plastic powder coated metal strip
    Patent number: 5176755
    Abstract: Process and apparatus for forming a plastic coating on a metal strip. A metal strip is cleaned, surface treated, coated with an electrostatically charged plastic powder in an enclosed chamber using a plurality of spray guns positioned on both sides of the strip, inductively heated to above the melting point of the powder, and maintained in an infrared heater until the fused powder is flowed into a coating having a smooth surface and a uniform thickness. Thermoplastic and thermosetting coatings, having thicknesses of at least 10 microns formed using total induction and infrared heating times of less than 60 seconds, can be fabricated without cracking.
    Type: Grant
    Filed: March 5, 1991
    Date of Patent: January 5, 1993
    Assignee: Armco Inc.
    Inventors: Sherman E. Winkle, Sr., Lloyd E. Cockerham, Frederick A. Myers
  • Method of producing plastic coated metal strip
    Patent number: 5059446
    Abstract: Process and apparatus for forming a plastic coating on a metal strip. A metal strip is cleaned, surface treated, coated with an electrostatically charged plastic powder in an enclosed chamber using a plurality of spray guns positioned on both sides of the strip, inductively heated to above the melting point of the powder, and maintained in an infrared heater until the fused powder is flowed into a coating having a smooth surface and a uniform thickness. Thermoplastic and thermosetting coatings, having thicknesses of at least 10 microns formed using total induction and infrared heating times of less than 60 seconds, can be fabricated without cracking.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: October 22, 1991
    Assignee: Armco Inc.
    Inventors: Sherman E. Winkle, Sr., Lloyd E. Cockerham, Frederick A. Myers