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US 2010/0164311 A1Published application
Limited angle external rotor motor actuator system
AssigneeHR Textron, Inc.
InventorM. Robert Mock
Life of this patent
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Abstract
The actuator system has a external rotor motor having: (i) an internal armature configured as a stator having a set of coils wrapped around a set of arms, and (ii) an external permanent magnet rotor having a set of poles configured to rotate less than 90 degrees around the stator. The actuator system has a drive shaft configured to be rotated by the external rotor motor. The actuator system has a drive train connecting the external permanent magnet rotor to the drive shaft, and configured to provide gear ratio to the drive shaft.
Claims9
An actuator system comprising:
- an external rotor motor having:
- an internal armature configured as a stator having a set of coils wrapped around a set of arms, and
- an external permanent magnet rotor having a set of poles configured to rotate less than 90 degrees around the stator;
- a drive shaft configured to be rotated by the external rotor motor;
- and
- a drive train connecting the external permanent magnet rotor to the drive shaft, and configured to allow transmission of a first component of rotational motion from the external permanent magnet rotor to the drive shaft and to prevent transmission of a second component of rotational motion from the external permanent magnet rotor to the drive shaft.
3 more elements
Dependencies are inferred from the claim text.