Dynamic magnetic information storage or retrieval – Head mounting – For adjusting head position
Reexamination Certificate
2005-03-22
2005-03-22
Evans, Jefferson (Department: 2652)
Dynamic magnetic information storage or retrieval
Head mounting
For adjusting head position
C310S311000, C310S331000
Reexamination Certificate
active
06870710
ABSTRACT:
The present invention aims to provide a compact and lightweight piezoelectric actuator, a driving method involving the piezoelectric actuator that can provide a large displacement at a low voltage, and a compact and lightweight information storage device with a high recording density that incorporates such a piezoelectric actuator and has a small moment of inertia of a head when the head is driven. The piezoelectric actuator according to the present invention has four rod-shaped driving sections. Of the four rod-shaped driving sections, a voltage is applied to the two driving sections located along a diagonal line at a time, and the voltage is applied to the two driving sections located along the other diagonal line at a different time from the time for the first two driving sections, whereby two central sections are rotationally driven relative to two end sections.
REFERENCES:
patent: 4491761 (1985-01-01), Grudkowski et al.
patent: 5682076 (1997-10-01), Zumeris
patent: 5693997 (1997-12-01), Griffith et al.
patent: 5764444 (1998-06-01), Imamura et al.
patent: 6236140 (2001-05-01), Arimura
patent: 6246552 (2001-06-01), Soeno et al.
patent: 6268983 (2001-07-01), Imada et al.
patent: 6362938 (2002-03-01), Suzuki et al.
patent: 6465934 (2002-10-01), Takeuchi et al.
patent: 6512659 (2003-01-01), Hawwa et al.
patent: 6538854 (2003-03-01), Koganezawa et al.
patent: 20030142448 (2003-07-01), Koganezawa
patent: 60-025284 (1985-02-01), None
patent: 62-287480 (1987-12-01), None
patent: 03-097174 (1991-04-01), None
patent: 10-136665 (1998-05-01), None
patent: 10-293979 (1998-11-01), None
patent: 11-031368 (1999-02-01), None
patent: 11-143541 (1999-05-01), None
patent: 11-273041 (1999-10-01), None
patent: 2000-268517 (2000-09-01), None
patent: WO9819304 (1998-05-01), None
Hida Masaharu
Kurihara Kazuaki
Mita Tsuyoshi
Evans Jefferson
Fujitsu Limited
Greer Burns & Crain Ltd.
LandOfFree
Piezoelectric actuator, driving method and information... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Piezoelectric actuator, driving method and information..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezoelectric actuator, driving method and information... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3430781