Patents by Inventor Maurice Arthur Frederick Hiles

Maurice Arthur Frederick Hiles 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).

  • Energy absorbing materials
    Patent number: 4101704
    Abstract: A novel elastomer having a very low compression set and a very slow recovery from compression comprises a flexible polyurethane of essentially linear structure containing unsatisfied hydroxyl groups, and is the reaction product of a substantially linear polyol having hydroxyl end groups and a molecular weight in the range 6000 to 12000, with an isocyanate in less than stoichiometric amount. This elastomer can be used as one layer of an energy-absorbing material, in combination with a more difficultly compressible layer comprising a tough flexible polymeric matrix having a plurality of rigid hollow bodies embedded therein.
    Type: Grant
    Filed: October 29, 1976
    Date of Patent: July 18, 1978
    Assignee: National Research Development Corporation
    Inventor: Maurice Arthur Frederick Hiles
  • Molded abrasive article comprising non-foamed, friable polyurethane and process
    Patent number: 4049396
    Abstract: A friction or abrasive composition comprises a dispersion of friction or abrasive particles in a polymeric substrate which becomes friable at a temperature below its softening point.
    Type: Grant
    Filed: August 26, 1975
    Date of Patent: September 20, 1977
    Assignee: National Research Development Corporation
    Inventor: Maurice Arthur Frederick Hiles