Patents by Inventor Earl B. Allen, III

Earl B. Allen, III 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 and apparatus for testing bipolar magnets having a circular curvature
    Patent number: 5155433
    Abstract: A bipolar magnet as used in magnetic disk drives is characterized by measuring field strength of the magnet along a plurality of radii using a Hall effect sensor which is incrementally indexed across the magnet by a stepper motor. The gap field strength, pole transitions, and null zone can be determined from combinations of the measurements along the plurality of radii.
    Type: Grant
    Filed: March 22, 1991
    Date of Patent: October 13, 1992
    Assignee: Conner Peripherals, Inc.
    Inventors: Earl B. Allen, III, Steven L. Kaczeus, Charles T. Bobek