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Direct drive field actuator motors

United States Patent

5,726,520
March 10, 1998
View the Complete Patent at the US Patent & Trademark Office
A positive-drive field actuator motor including a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field, and at least one drive shoe movable by the dimensional changes of the field actuator to contact and move a rotor element with respect to the stator. Various embodiments of the motor are disclosed, and the rotor element may be moved linearly or arcuately.
Grahn; Allen R. (Salt Lake City, UT)
Bonneville Scientific Incorporated (Salt Lake City, UT)
08/ 482,201
June 7, 1995
RIGHTS OF UNITED STATES GOVERNMENT This invention was made with Government support under Contract No. DE-FG02-92ER81439 awarded by the Department of Energy. The Government has certain rights in the invention. This invention was made with Government support under Contract Nos. NAS8-38914, NAS8-39362 and NAS7-1205 awarded by the National Aeronautics and Space Administration. The Government has certain rights in the invention.