Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tomoyuki Yuasa0
Satoshi Shinke0
Date of Patent
January 9, 2007
0Patent Application Number
109805110
Date Filed
November 3, 2004
0Patent Primary Examiner
Patent abstract
In a drive apparatus having a vibration-generator including a plurality of electromechanical conversion elements, a plurality of weights located between each of the electromechanical conversion elements, and a rod fixed to one end of an electromechanical conversion element, a mass and a spring constant of each component included in the vibration-generator are determined, so that a relationship of integral multiple is satisfied. Thus, highly efficient driving with taking advantage of the resonance frequencies can be realized, and thus the energy consumption can be saved.
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