Patents by Inventor Terry S. Shirrod

Terry S. Shirrod 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).

  • Miniature grating device
    Patent number: 5714832
    Abstract: A miniature grating drive device (216) for accurately and precisely positioning a grating (236) of a projection Moire topography measurement system where the Moire topography measurement system is included as part of a hand-held medical instrument for providing surface measurements of inaccessible living membranes. The drive device (216) includes two separate piezoelectric bimorph actuators (248, 256) for positioning the grating (236) at three precise locations. The first piezoelectric bimorph actuator (256) accurately positions the grating (236) at a first location, and the second piezoelectric bimorph (248) actuator accurately positions a base (232) on which the first piezoelectric actuator (256) is attached to move the grating (236) to a second location.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: February 3, 1998
    Assignee: Hughes Electronics
    Inventors: Terry S. Shirrod, Dean H. S. Liskow, John P. Blackburn