Dynamic magnetic information storage or retrieval – Head mounting – For adjusting head position
Reexamination Certificate
2007-12-25
2007-12-25
Renner, Craig A. (Department: 2627)
Dynamic magnetic information storage or retrieval
Head mounting
For adjusting head position
C310S331000
Reexamination Certificate
active
10684403
ABSTRACT:
A piezoelectric actuator with a reinforced bending mode to suppress bending resonance caused by extension/contraction movements of the piezoelectric actuator and a disk drive using the piezoelectric actuator are provided. A flexible substrate is separated by a slit. A first piezoelectric element unit and a second piezoelectric element unit, both showing extension/contraction displacement, are disposed on one of the slit-separated flexible substrates, respectively. A coupling portion is provided to couple the separated flexible substrates across the slit. The coupling portion is provided at a position corresponding to an antinode of a primary bending mode of the first and second piezoelectric element units being respectively fixed in both ends.
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Kuwajima Hideki
Matsuoka Kaoru
Matsushita Electric - Industrial Co., Ltd.
Renner Craig A.
Wenderoth , Lind & Ponack, L.L.P.
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