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Packaged strain actuator

  • US 6,404,107 B1
  • Filed: 02/26/1999
  • Issued: 06/11/2002
  • Est. Priority Date: 01/27/1994
  • Status: Expired due to Fees
First Claim
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1. An actuator device comprising:

  • an electro-active ceramic element;

    a conductor comprising a pair of interdigital electrodes;

    an insulator; and

    a pair of electrically conductive regions, wherein said pair of electrically conductive regions are spaced apart from said electro-active ceramic element;

    wherein said electro-active element, said conductor; and

    said insulator are bonded together such that in-plane strain in said electro-active element is shear coupled between said electro-active element and said insulator;

    wherein said pair of interdigital electrodes are in direct mechanical and electrical contact with said electro-active element and in direct electrical contact with said pair of electrically conductive regions; and

    wherein each of said pair of interdigital electrodes comprises a plurality of angled line electrodes and a common bus.

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