Patents by Inventor Ian Sowerby

Ian Sowerby 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).

  • Electromagnetic acoustic transducer
    Patent number: 7406873
    Abstract: An electromagnetic acoustic transducer (12, 24) has one or a plurality of magnets for applying a DEC magnetic field to a material (4, 25) under test, and an electrical coil (2, 23) supplied by an alternating current source for, providing an AC magnetic flux within the material under test. A wear plate (16, 26) engages with an slides along the surface of the material under test. The wear plate (16, 26) is of electrically conductive ferromagnetic material and has apertures (17, 31) therein. Thus, both the DC field and the ACT flux can penetrate the material under test and create ultrasonic vibration of that material.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: August 5, 2008
    Assignee: PII Limited
    Inventors: David Paige, Robert Andrew Mercel, Ian Sowerby
  • Electromagnetic acoustic transducer
    Publication number: 20060278000
    Abstract: An electromagnetic acoustic transducer (12, 24) has one or a plurality of magnets for applying a DEC magnetic field to a material (4, 25) under test, and an electrical coil (2, 23) supplied by an alternating current source for, providing an AC magnetic flux within the material under test. A wear plate (16, 26) engages with an slides along the surface of the material under test. The wear plate (16, 26) is of electrically conductive ferromagnetic material and has apertures (17, 31) therein. Thus, both the DC field and the ACT flux can penetrate the material under test and create ultrasonic vibration of that material.
    Type: Application
    Filed: June 18, 2004
    Publication date: December 14, 2006
    Applicant: PII LTD
    Inventors: David Paige, Andrew Robert, Ian Sowerby