Patents by Inventor William E. Carnahan

William E. Carnahan 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).

  • Preparing sheet metal and fabricating roofing shingles
    Patent number: 5657603
    Abstract: Flat-rolled sheet metal is manufactured to preselected gage, mechanical properties and surface finish and is fabricated into unitary sheet metal shingle structures with interlocking folded over sheet metal layers providing for ease of assembly and weatherproofing along each side of a rectangular configuration portion which remains exposed after assembly of shingle structures in side-by-side interlocked relationship in a horizontal direction, and in overlapping partially-covering relationship in a vertical direction. Galvanized mild steel provides lightweight, high-tensile strength, impact-resistant and long-service-life shingle structure. Finish coating enables selection of coloring and thermosetting polymeric coatings facilitate embossing of exposed portions to simulate the appearance of cedar shakes or other types of shingles.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: August 19, 1997
    Assignee: Weirton Steel Corporation
    Inventors: Robert R. Goodhart, Jane M. Brown, William E. Carnahan
  • Preparing sheet metal and fabricating roofing shingles
    Patent number: 5495654
    Abstract: Flat-rolled sheet metal is manufactured to preselected gage, mechanical properties and surface finish and is fabricated into unitary sheet metal shingle structures with interlocking folded over sheet metal layers providing for ease of assembly and weatherproofing along each side of a rectangular configuration portion which remains exposed after assembly of shingle structures in side-by-side interlocked relationship in a horizontal direction, and in overlapping partially-covering relationship in a vertical direction. Galvanized mild steel provides lightweight, high-tensile strength, impact-resistant and long-service-life shingle structure. Finish coating enables selection of coloring and thermosetting polymeric coatings facilitate embossing of exposed portions to simulate the appearance of cedar shakes or other types of shingles.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: March 5, 1996
    Assignee: Weirton Steel Corporation
    Inventors: Robert R. Goodhart, Jane M. Brown, William E. Carnahan