InventorAssigneeUS Classes310/317, Input circuit for mechanical output from piezoelectric element310/328With mechanical energy coupling meansAttorney, Agent or FirmInternational Classes H01L 41/09 H02N 2/06 Issued Patent Number:7902719
Abstract textAn apparatus for affecting at least one physical parameter associated with a shaft oriented about a longitudinal axis includes: a piezoelectric tubular member in a substantially osculatory coaxial relation with at least a portion of the shaft; and at least one electrical network coupled with the piezoelectric tubular member for switchingly completing an electrical path through the piezoelectric tubular member. | 
