Low cost limited rotation rotary actuator
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United States of America Patent
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Jun 5, 2018
Issued Date -
Aug 11, 2016
app pub date -
Aug 18, 2015
filing date -
Feb 6, 2015
priority date (Note) -
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Abstract
A limited rotation electromechanical rotary actuator includes a stator having an aperture sized to accept a rotor assembly and a rectangular coil. A rotor assembly is bidirectionally operable with the stator over a limited range of rotation. The rotor assembly includes an output shaft and a two-pole magnet and a position sensor shaft, wherein the output shaft and position sensor shaft are each rigidly attached to only a portion of the magnet. The rotor assembly includes apertures for allowing an electrical coil to pass through. The electrical coil extends around the magnet on four sides and is excitable for providing bidirectional torque to the rotor.
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