VIBRATION GENERATING APPARATUS
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United States of America Patent
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Apr 18, 2016
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Mar 20, 2013
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Abstract
A vibration generating apparatus includes a mass body; an, elastic member coupled to the mass body; and a piezoelectric element disposed on one surface of the elastic member facing the mass body, wherein a surface of the mass body facing the piezoelectric element has a shape that prevents contact between the piezoelectric element and the mass body.
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