Patents by Inventor Mathew A. Hepworth

Mathew A. Hepworth 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).

  • Flexible sheet material and articles made therefrom
    Patent number: 4548678
    Abstract: Flexible sheet material suitable for use in the manufacture of wear-resistant laminated articles such as bearings and rotor blades comprises particles of graphite and heat-resistant web-forming fibres, preferably of poly (aromatic amide), bound together with an organic binder, the proportions of the ingredients being:______________________________________ graphite 20-95% heat-resistant web-forming fibres 3-78% organic binder 2-15% ______________________________________To make wear-resistant articles, sheets of the material are impregnated with resin, superimposed one upon another, and subjected to high pressure and elevated temperature.
    Type: Grant
    Filed: May 12, 1983
    Date of Patent: October 22, 1985
    Assignee: T&N Materials Research Limited
    Inventors: Philip Laflin, Ian Eddleston, Mathew A. Hepworth