Patents by Inventor Timothy Crotty

Timothy Crotty 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).

  • OPTICAL STALL PRECURSOR SENSOR APPARATUS AND METHOD FOR APPLICATION ON AXIAL FLOW COMPRESSORS
    Publication number: 20020168260
    Abstract: A stall precursor detector system for an axial flow compressor having at least one optical sensor to detect the deflection of a rotating airfoil of the compressor, means for comparing the deflection with a predetermined value, the predetermined value being indicative of onset of a stall in the compressor; and means for identifying onset of a stall and producing a stall onset signal if the deflection is greater than the predetermined value. A method for detecting a stall onset in an axial flow compressor system comprising (a) providing at least one optical sensor to measure the deflection of an airfoil, the deflection caused by a rotating stall cell; (b) comparing the deflection as measured in step (a) with a predetermined value indicative of a stall; and (c) identifying onset of a stall if the measured deflection is greater than the predetermined value.
    Type: Application
    Filed: May 14, 2001
    Publication date: November 14, 2002
    Inventors: Timothy Crotty, John M. Delvaux
  • Optical stall precursor sensor apparatus and method for application on axial flow compressors
    Patent number: 6474935
    Abstract: A stall precursor detector system for an axial flow compressor having at least one optical sensor to detect the deflection of a rotating airfoil of the compressor, means for comparing the deflection with a predetermined value, the predetermined value being indicative of onset of a stall in the compressor; and means for identifying onset of a stall and producing a stall onset signal if the deflection is greater than the predetermined value. A method for detecting a stall onset in an axial flow compressor system comprising (a) providing at least one optical sensor to measure the deflection of an airfoil, the deflection caused by a rotating stall cell; (b) comparing the deflection as measured in step (a) with a predetermined value indicative of a stall; and (c) identifying onset of a stall if the measured deflection is greater than the predetermined value.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: November 5, 2002
    Assignee: General Electric Company
    Inventors: Timothy Crotty, John M. Delvaux