Patents by Inventor Frank Cork

Frank Cork 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).

  • Method for removing aluminide coatings from nickel or cobalt base alloys
    Patent number: 4282041
    Abstract: A method of removing aluminium containing alloy coatings from nickel or cobalt base alloy substrates in which the coated substrate is immersed in an aqueous mixture of nitric and sulphamic acids until coating dissolution is complete. A solution containing 5 to 30% vol./vol. nitric acid and from 5 to 30% wt./vol. sulphamic acid is preferred.
    Type: Grant
    Filed: December 14, 1979
    Date of Patent: August 4, 1981
    Assignee: Rolls-Royce Limited
    Inventor: Frank Cork
  • Protective coating
    Patent number: 4234653
    Abstract: A heat resistant protective coating for a metal surface comprises a glass matrix having at least 50 percent by weight of finely divided metallic particles dispersed therein. The coating is produced by covering the metal surface with a mixture containing 40 to 60% by weight of finely divided metallic particles, 17 to 40% by weight of a ceramic frit and from 10 to 18% by weight of an organic resin, and heating the thus coated surface in air to burn off the organic resin and fuse the frit.
    Type: Grant
    Filed: May 24, 1977
    Date of Patent: November 18, 1980
    Assignee: Rolls-Royce Limited
    Inventors: Norman E. Ballard, Frank Cork, Philip H. Andrews, Francis Chappell
  • Method of and mixture for aluminizing a metal surface
    Patent number: 4009146
    Abstract: A coating mixture for use in aluminizing metal surfaces comprises 5 to 50% by weight of an organic resin binder, 2 to 25% by weight of one or more halides and the balance finely divided particles of an aluminium-containing alloy. The alloy has a melting point of at least 1100.degree. C and contains 40 to 60% by weight of aluminium, the balance comprising iron, cobalt, nickel or zirconium or any combination thereof. The coating mixture is applied to the metal surface to be aluminized and then heated in an inert or reducing atmosphere at a temperature of 800.degree. to 1100.degree. C for a time sufficient to enable at least some of the aluminium in the alloy to diffuse into the metal surface.
    Type: Grant
    Filed: August 14, 1974
    Date of Patent: February 22, 1977
    Assignee: Rolls-Royce (1971) Limited
    Inventors: Frank Cork, David Frederick Bettridge, Philip Charles Clarke