Patents by Inventor Edward A. Lloyd

Edward A. Lloyd 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).

  • Patent number: 5119023
    Abstract: A method and apparatus for non-destructively examining cylindrical material by electromagnetic induction use primary coils separated by an annular gap. The primary coils are excited oppositely so that the respective magnetic fields thereby generated are in boosting relationship in the gap. Close electromagnetic coupling of the primary coils with the material under examination is effected, and detectors, such as secondary coils are disposed in the gap to detect flux perturbations caused by variation in the properties of the material under examination.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: June 2, 1992
    Assignee: NNC Limited
    Inventor: Edward A. Lloyd
  • Patent number: D265175
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: June 29, 1982
    Inventor: Edward A. Lloyd