Patents by Inventor Eduardo R Evangelista

Eduardo R Evangelista 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 flow area measurement
    Patent number: 6148677
    Abstract: The effective flow area of a restriction in a gas flow passage, such as that of a gas turbine nozzle or vane, is determined by use of a large reservoir containing pressurized gas which is discharged through the passage in a blowdown operation in which the ratio of back pressure of the restriction to gas pressure in the reservoir is maintained below critical for sonic flow; a timer may be used to measure the time for a predetermined fall of pressure in the reservoir whilst there is sonic flow through the restriction.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: November 21, 2000
    Assignee: Standard Aero Limited
    Inventor: Eduardo R Evangelista