Patents by Inventor Roger J. M. Sills

Roger J. M. Sills 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).

  • Gas turbine engines
    Patent number: 4354687
    Abstract: A gas turbine engine blade tip seal consists of a sealing ring which is controlled by means of two annular control members. The members are arranged such that one control member has a relatively rapid thermal response rate and the other control member has a relatively slow thermal response rate, the sealing ring being controlled such that a preferred tip clearance is maintained under varying engine operating conditions.
    Type: Grant
    Filed: August 25, 1981
    Date of Patent: October 19, 1982
    Assignee: Rolls-Royce Limited
    Inventors: Brian C. Holland, Roy T. Hirst, Roger J. M. Sills, Cyril G. Moore