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Mechanism comprised of ultrasonic lead screw motor

  • US 20060049720A1
  • Filed: 10/28/2005
  • Published: 03/09/2006
  • Est. Priority Date: 09/08/2003
  • Status: Active Grant
First Claim
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1. An apparatus for driving a threaded shaft assembly comprised of a threaded nut with an axis of rotation and, engaged therewith, a threaded shaft with an axial direction and a length, said assembly is comprised of means for subjecting said threaded nut to ultrasonic vibrations and thereby causing said threaded shaft to rotate and said threaded nut to translate in said axial direction over a portion of said length of said threaded shaft.

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