Patents by Inventor David Jarrell

David Jarrell 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).

  • Multi-spool by-pass turbofan engine
    Patent number: 6647708
    Abstract: A multi-spool turbofan engine has a plurality of circumferentially spaced poppet valves with diverters secured thereto for precisely controlling bleed of combustion gas aft of the high pressure turbine whereby the high pressure spool operates at high idle RPM so as to power accessories and the low pressure spool operates at low RPM so as to minimize noise and fuel consumption.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: November 18, 2003
    Assignee: Williams International Co., L.L.C.
    Inventors: Melody Bornhoft, David Jarrell
  • Multi-spool by-pass turbofan engine
    Publication number: 20030167750
    Abstract: A multi-spool turbofan engine has a plurality of circumferentially spaced poppet valves with diverters secured thereto for precisely controlling bleed of combustion gas aft of the high pressure turbine whereby the high pressure spool operates at high idle RPM so as to power accessories and the low pressure spool operates at low RPM so as to minimize noise and fuel consumption.
    Type: Application
    Filed: March 5, 2002
    Publication date: September 11, 2003
    Inventors: Melody Bornhoft, David Jarrell