Patents by Inventor David Bettridge

David Bettridge 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).

  • Metallic article having a protective coating and a method of applying a protective coating to a metallic article
    Patent number: 6444332
    Abstract: A metallic turbine blade (10) has a protective coating (22) applied to the shank (16) and the root (18) of the turbine blade (10). The protective coating (22) comprises a chromized coating (24) diffused into the surface of the metallic article (10) and a glass coating (26) on the chromized coating (24). The glass coating (26) comprises a silicate glass, preferably having a chromium oxide filler. The glass coating (26) preferably comprises a boron titanate silicate glass having a chromium oxide filler. The protective coating (22) provides oxidation and sulphidation resistance for the shank (16) and root (18) of the turbine blade (10).
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: September 3, 2002
    Assignee: Rolls-Royce plc
    Inventor: David Bettridge