Patents by Inventor David T. Sutcliffe

David T. Sutcliffe 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).

  • Composite material manufacture by shaping individual sheets followed by consolidating the sheets
    Patent number: 4683018
    Abstract: A composite material comprising reinforcing carbon fibres in an epoxy resin matrix is manufactured by stacking alternate layers of resin impregnated fibre and polyester release film, and compressing the stack between shaped formers at a temperature below the resin cure temperature. The layers are than separated and the release film discarded. After re-stacking, the fibre layers are autoclave moulded on an appropriately shaped former at a temperature at which the layers consolidate and the resin cures.
    Type: Grant
    Filed: November 20, 1985
    Date of Patent: July 28, 1987
    Assignee: Rolls-Royce plc
    Inventors: David T. Sutcliffe, David J. Barraclough