Patents by Inventor Darrell Follett

Darrell Follett 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).

  • Characteristic measurement of an actuation drive coil and associated damping mechanism
    Publication number: 20050285589
    Abstract: A system and method for analyzing a coil actuator of a type having a coil and a magnet. A current source selectively applies a first current to a coil of a coil actuator for setting a moveable part of the coil actuator to a first position. A recording system captures data corresponding to a back electromotive force voltage produced by oscillation of the coil actuator upon movement of the moveable part of the coil actuator to a second position. A processor applies a curve fit to the back electromotive force data for calculating a frequency characteristic and damping response of the coil actuator.
    Type: Application
    Filed: June 23, 2004
    Publication date: December 29, 2005
    Inventors: James Eaton, Darrell Follett, David Harper, Wayne Imaino, Leif Kirschenbaum, Andrew McKee, Luis Palacios