High force rotary actuator
AssigneeQM Power, Inc.
InventorCharles J. Flynn
Life of this patent
Estimating the term…
Abstract
An actuator includes an upper stator with four upper poles and a lower stator with four lower poles aligned with the four upper poles. A permanent magnet is attached to the upper stator and the lower stator. Four moving armatures are positioned at terminal ends of the four upper poles and the four lower poles. Coils are wrapped around the upper stator and the lower stator. A controller selectively applies current to the coils to migrate flux created by the permanent magnet through selective poles of the upper stator and the lower stator and thereby alter the size of air gaps associated with the four moving armatures.
Claims15
An actuator, comprising:
- an upper stator with a first plurality of poles defining a first linear axis and a second linear axis orthogonal to the first linear axis;
- a lower stator with a second plurality of poles aligned with the first plurality of poles to form aligned poles including first linear axis aligned poles and second linear axis aligned poles;
- a permanent magnet attached to the upper stator and the lower stator;
- a plurality of moving armatures separated from the aligned poles by a corresponding plurality of air gaps;
- coils wrapped around the first linear axis aligned poles and the second linear axis aligned poles;
- a controller to apply current to the coils to control the size of
- a first air gap between a first moving armature and a first end of the first linear axis aligned poles and thereby form a first linear motion, and
- a second air gap between a second moving armature and a first end of the second linear axis aligned poles and thereby form a second linear motion;
- and
- a shaft to receive the first linear motion and the second linear motion such that the output forces of the first linear motion and the second linear motion are summed and are translated to rotary motion of the shaft.
An actuator, comprising:
- an upper stator with four upper poles;
- a lower stator with four lower poles aligned with the four upper poles;
- a permanent magnet attached to the upper stator and the lower stator;
- four moving armatures positioned at terminal ends of the four upper poles and the four lower poles;
- coils wrapped around the upper stator and the lower stator;
- and
- a controller to selectively apply current to the coils to migrate flux created by the permanent magnet through selective poles of the upper stator and the lower stator and thereby alter the size of air gaps associated with the four moving armatures.
Dependencies are inferred from the claim text.