Patents by Inventor Christopher C. North

Christopher C. North 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).

  • Position sensors and methods
    Patent number: 9068815
    Abstract: Position sensors and methods having a coil, a magnetic target movable into greater and lesser proximity to the coil responsive to the position to be sensed, and circuitry responsive to an inductance of the coil to provided a measure of the proximity of the magnetic target to the coil. Various embodiments are disclosed, including embodiments having improved sensitivity and shielding from stray fields and for shielding from magnetic fields generated by the coil excitation.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: June 30, 2015
    Assignee: Sturman Industries, Inc.
    Inventors: Christopher C. North, Jeffrey A. Stewart