Piezoelectric drive
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United States of America Patent
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Jul 27, 2004
Grant Date -
Mar 20, 2003
app pub date -
Aug 7, 2002
filing date -
Nov 29, 1999
priority date (Note) -
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Abstract
A piezoelectric drive having an excitation piezoelement (10) and a resonator (2). The resonator is coupled to the piezoelement and is in interactive connection with a body (3) to be driven. The resonator (2) has a mass distribution that is designed such that, as a result of an excitation oscillation by the piezoelement (10), the resonator (2) begins to asymmetrically oscillate in several directions dependent on the frequency of the excitation oscillation. The asymmetric oscillations, via the interactive connection, displace the body to be driven into a directed movement.
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