Is a
Patent attributes
Patent Applicant
Patent Jurisdiction
Patent Number
Date of Patent
January 10, 2017
Patent Application Number
13895055
Date Filed
May 15, 2013
Patent Citations Received
Patent Primary Examiner
Patent abstract
In a piezoelectric ejector assembly, a piezoelectric actuator is attached to an ejector mechanism, while a drive signal generator and a controller are coupled to the actuator. The drive signal generator is configured to generate a drive signal for driving the actuator to oscillate the ejector assembly. The controller is configured to control the drive signal generator to drive the actuator at a resonant frequency of the ejector assembly, and an auto-tuning circuit is provided to define the optimum drive signal frequency.
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