Mechanism comprised of ultrasonic lead screw motor

Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices

Reexamination Certificate

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Reexamination Certificate

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11152805

ABSTRACT:
An optical assembly that contains an optical device movably attached to a apparatus for driving a threaded shaft assembly. The apparatus contains of a threaded shaft with an axis of rotation and, engaged therewith, a threaded nut. The assembly contains a device for subjecting the threaded nut to ultrasonic vibrations and thereby causing said the shaft to simultaneously rotate and translate in the axial direction.

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