Patents by Inventor Frank D. Afflerbach

Frank D. Afflerbach 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).

  • Patent number: 3956545
    Abstract: A friction disc comprises continuous longitudinally co-extensive generally parallel glass strands wound spirally in the plane of the disc; short, generally parallel glass strands extending normal to the plane of the disc along said spiral; non-ferrous metal chips or wires; and a heat curable cement binding said glass strands and non-ferrous metal chips or wires together. The friction disc is made by forming a glass fabric with warp rovings of continuous parallel glass strands and fill rovings of continuous parallel glass strands; impregnating the fabric with a heat curable cement; winding the glass fabric onto a mandrel to form a spirally wrapped cylinder; slicing the cylinder into disc preforms; and molding the disc preforms under heat and pressure. Either non-ferrous metal wires are included in the fabric or non-ferrous metal chips are deposited on the fabric prior to wrapping the fabric onto the mandrel.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: May 11, 1976
    Assignee: Johns-Manville Corporation
    Inventors: Frank D. Afflerbach, Irvin Barnett, Walter B. Peters