Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2011-05-17
2011-05-17
Rosenau, Derek J (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S323010
Reexamination Certificate
active
07944129
ABSTRACT:
Provided are ultrasonic actuators and magnetic recording apparatuses that are stably equipped with superior driving performance without making the apparatus complex or raising cost. By providing an approximately equilateral triangular shaped vibrating member provided with piezoelectric deformation members that expand and contract upon the application of a driving signal, and a moving member that is in pressure contact with the three vertices of the vibrating member to cause relative movement with respect to the vibrating member. The moving member is caused to move relative to the vibrating member due to elliptical vibrations in the same rotational direction in basically the three vertices of the vibrating member due to a deformation vibration of the piezoelectric deformation parts.
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Konica Minolta Opto Inc.
Rosenau Derek J
Sidley Austin LLP
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