Patents by Inventor Jonathan G Bates

Jonathan G Bates 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).

  • Method of detecting a change in the structure of a complex shape article
    Patent number: 6899519
    Abstract: A method of detecting the change in the structure of a turbine rotor uses the steps of injecting an ultrasonic signal into the turbine rotor at a first position using a first ultrasonic transducer to produce a diffuse field ultrasonic signal in the rotor; detecting the signal in the rotor at a second position using a second ultrasonic transducer measuring the time for the signal to travel from the first ultrasonic transducer to the second ultrasonic transducer and comparing the measured time for the diffuse field ultrasonic signal to travel from the first ultrasonic transducer to the second ultrasonic transducer with a stored time for the diffuse field ultrasonic signal to travel from the first ultrasonic transducer to the second ultrasonic transducer to determine if there is a change in the structure of the turbine rotor.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: May 31, 2005
    Assignee: Rolls-Royce plc
    Inventors: Jonathan G Bates, John R Webster
  • Method of detecting a change in the structure of a complex shape article
    Publication number: 20040009065
    Abstract: A method of detecting the change in the structure of a turbine rotor (24) comprises injecting an ultrasonic signal into the turbine rotor (24) at a first position using a first ultrasonic transducer (102) to produce a diffuse field ultrasonic signal in the turbine rotor (24). Detecting the diffuse field ultrasonic signal in the turbine rotor (24) at a second position using a second ultrasonic transducer (106). Measuring the time for the diffuse field ultrasonic signal to travel from the first ultrasonic transducer (102) to the second ultrasonic transducer (106). Comparing the measured time for the diffuse field ultrasonic signal to travel from the first ultrasonic transducer (102) to the second ultrasonic transducer (106) with a stored time for the diffuse field ultrasonic signal to travel from the first ultrasonic transducer (102) to the second ultrasonic transducer (106) to determine if there is a change in the structure of the turbine rotor (24).
    Type: Application
    Filed: March 20, 2003
    Publication date: January 15, 2004
    Inventors: Jonathan G. Bates, John R. Webster