Ceramic motor

  • US 5,453,653 A
  • Filed: 08/03/1993
  • Issued: 09/26/1995
  • Est. Priority Date: 07/09/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A micromotor for moving a body comprising:

  • at least two rectangular piezoelectric plates, said plates having different hardnesses, each plate having;

    long and short edges and first and second faces;

    electrodes attached to the first and second faces; and

    a ceramic spacer attached to the center of a first one of the edges and operative to be pressed against the body;

    means for applying resilient force to the center of a second edge opposite the first edge, whereby the ceramic spacer is pressed against the body; and

    means for electrifying at least some of the electrodes.

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