Multilayer piezoelectric motor

  • US 7,075,211 B1
  • Filed: 05/31/1999
  • Issued: 07/11/2006
  • Est. Priority Date: 05/31/1999
  • Status: Expired due to Fees
First Claim
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1. A piezoelectric micromotor for moving a moveable element comprising:

  • a vibrator in the shape of a rectangular parallelepiped formed from a plurality of thin layers of piezoelectric material having first and second identical relatively large rectangular face surfaces defined by long and short edge surfaces wherein the layers are aligned one on top of the other and have their face surfaces bonded together;

    electrodes on surfaces of the layers;

    a contact region located on one or more edge surfaces of the layers, urged against the body; and

    a least one electrical power supply confirmed to electrify a first configuration of some of the electrodes to excite and control only longitudinal vibrations in the vibrator parallel to the long edge surfaces and a second configuration of electrodes to excite and control only transverse vibrations in the vibrator parallel to the short edge surfaces so as to selectively generate different forms of vibratory motion in the vibrator.

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