Patents Assigned to Physik Instrumemte (PI) GmbH & Co. KF
  • ULTRASONIC ACTUATOR
    Publication number: 20110175489
    Abstract: The invention relates to an ultrasonic actuator, preferably for use in an ultrasonic motor, in the form of a piezoelectric plate with a length L, height H and thickness t, wherein the piezoelectric plate has a lateral plane of symmetry Sq, a longitudinal plane of symmetry Sl and at least two main surfaces, and the piezoelectric plate comprises at least two generators symmetrically disposed with respect to plane of symmetry Sq for generating ultrasonic standing waves.
    Type: Application
    Filed: May 27, 2009
    Publication date: July 21, 2011
    Applicant: Physik Instrumemte (PI) GmbH & Co. KF
    Inventors: Alexej Wischnewskij, Wladimir Wischnewskiy, Ulrich Brüggemann, Reinhard Hübner, Siegfried Lindig