Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2005-10-07
2008-08-05
Schuberg, Darren (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S317000
Reexamination Certificate
active
07408288
ABSTRACT:
A determination is made whether a moving speed of a slider section with respect to a rod section in a piezoelectric actuator is lower than a predetermined speed. When the moving speed is lower than the predetermined speed, it is considered that a friction-bonded portion between the rod section and the slider section is in a fastened state or a nearly fastened state. A resonance frequency of the piezoelectric actuator or a frequency proximity to the resonance frequency is set as a driving frequency for the piezoelectric actuator. The slider section is moved in a reciprocating manner plural times with respect to the rod section. As a result, an abnormal state is eliminated from the piezoelectric actuator.
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Japanese “Notification of Reasons for Refusal”, dated Feb. 28, 2007, for counterpart Japanese Patent Application No. 2004-301519; along with an English-language partial translation thereof.
Japanese “Examiner's Decision of Refusal”, dated Jan. 24, 2008, for counterpart Japanese Patent Application No. 2004-301519; along with an English-language translation thereof.
Konica Minolta Holdings Inc.
Rosenau Derek J
Schuberg Darren
Sidley Austin LLP
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