Patents by Inventor Laurence T. Sherwood

Laurence T. Sherwood 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).

  • Flow measurement system
    Patent number: 4715213
    Abstract: A method and apparatus for measuring the leakage flow rate through a labyrinth seal is disclosed. This is achieved by first injecting a tracer gas through a spray tube at an upstream region of the seal. The tracer gas mixes with the gas stream to form a mixed flow stream. The concentration of the tracer gas in the mixed flow stream is then measured, allowing the leakage flow rate to be calculated.
    Type: Grant
    Filed: March 13, 1986
    Date of Patent: December 29, 1987
    Assignee: General Electric Company
    Inventors: William F. McGreehan, Laurence T. Sherwood