Power plants – Motor operated by expansion and/or contraction of a unit of... – Mass is a solid
Reexamination Certificate
2007-03-15
2010-11-02
Denion, Thomas E (Department: 3748)
Power plants
Motor operated by expansion and/or contraction of a unit of...
Mass is a solid
C060S527000, C060S529000, C327S172000, C327S175000, C327S178000, C396S052000
Reexamination Certificate
active
07823383
ABSTRACT:
An actuator driving device includes: an actuator made of a shape metal alloy having a property that a predetermined shape is memorized in advance, and that the predetermined memorized shape is recovered when the actuator is heated to a predetermined temperature; an applier for applying, to the actuator, a pulse current or a pulse voltage at least having a predetermined current value or a predetermined voltage, and a predetermined duty ratio to heat the actuator; and a determiner for determining the current value or the voltage value, and the duty ratio of the pulse current or the pulse voltage to be applied to the actuator by the applier, wherein the determiner is operative to determine the pulse current or the pulse voltage having: the current value larger than a current value of a constant current required for displacing the actuator by a predetermined targeted displacement amount, or the voltage value corresponding thereto; and the duty ratio of making an applied current amount smaller than an applied current amount corresponding to an integrated value of the constant current in applying the constant current to the actuator.
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Noda Atsuhiro
Wada Shigeru
Denion Thomas E
Jetton Christopher
Konica Minolta Opto Inc.
Sidley Austin LLP
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