Piezoelectric rotary drive for a shaft
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United States of America Patent
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Aug 11, 2015
Grant Date -
Aug 28, 2014
app pub date -
Aug 1, 2012
filing date -
Aug 5, 2011
priority date (Note) -
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Abstract
A piezoelectric rotary drive for a shaft, is disclosed which can include a piezoelectric actuator and a coupling portion for driving the shaft as a stick-slip drive. To transmit greater contact forces between the frame and the shaft, at least one piezoelectric actuator and an adjustable and/or deformable frame with at least one coupling portion can be coupled to the shaft in a force-locked manner so as to accomplish a stick-slip drive, wherein the frame translates a piezoelectric deformation of the actuator mechanically such that the coupling portion rotates about the axis of the shaft over at least a part of the circumference of the shaft.
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