Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2006-08-01
2006-08-01
Kim, Paul D. (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S025350, C029S603030, C029S603040, C360S294400, C360S294500, C360S294600, C360S294700
Reexamination Certificate
active
07082670
ABSTRACT:
A method and apparatus for actively controlling the gram load on a disk drive suspension assembly and to a disk drive using the present disk drive suspension assembly. The gram load can be actively changed by changing the applied voltage to one or more multi-layer piezoelectric actuators attached to the head suspension. The active gram control system allows the gram load to be changed on a non-permanent basis and to control the gram load to a much finer scale than can be accomplished using conventional techniques. By attaching the first and second ends of the piezoelectric actuator to discrete locations on the load beam, while the portion of the piezoelectric actuator between the first and second ends remains unattached to the load beam, a force non-parallel to the load beam can be applied to the head suspension.
REFERENCES:
patent: 4146911 (1979-03-01), Gyi et al.
patent: 4605977 (1986-08-01), Matthews
patent: 4625137 (1986-11-01), Tomono
patent: 4651242 (1987-03-01), Hirano et al.
patent: 4805057 (1989-02-01), Ogawa et al.
patent: 4843502 (1989-06-01), Tagawa
patent: 4853810 (1989-08-01), Pohl et al.
patent: 4858040 (1989-08-01), Hazebrouck
patent: 5012369 (1991-04-01), Owe et al.
patent: 5068841 (1991-11-01), Nakayama et al.
patent: 5079652 (1992-01-01), Ishida et al.
patent: 5189578 (1993-02-01), Mori et al.
patent: 5233256 (1993-08-01), Hayashi et al.
patent: 5255135 (1993-10-01), Itoh et al.
patent: 5285338 (1994-02-01), Sugahara et al.
patent: 5305294 (1994-04-01), Kime et al.
patent: 5373213 (1994-12-01), Smith
patent: 5377058 (1994-12-01), Good et al.
patent: 5384675 (1995-01-01), Crawforth et al.
patent: 5390949 (1995-02-01), Naganathan et al.
patent: 5392173 (1995-02-01), Kinoshita et al.
patent: 5394281 (1995-02-01), Kajitani
patent: 5408376 (1995-04-01), Nishikura et al.
patent: 5423207 (1995-06-01), Flechsig et al.
patent: 5446612 (1995-08-01), Thornton et al.
patent: 5477404 (1995-12-01), Kozaki
patent: 5719720 (1998-02-01), Lee
patent: 5764444 (1998-06-01), Imamura et al.
patent: 5796558 (1998-08-01), Hanrahan et al.
patent: 5801505 (1998-09-01), Lee et al.
patent: 5801906 (1998-09-01), Yanagisawa et al.
patent: 5802701 (1998-09-01), Fontana et al.
patent: 5825590 (1998-10-01), Ohwe
patent: 5898541 (1999-04-01), Boutaghou et al.
patent: 5991114 (1999-11-01), Huang et al.
patent: 6108175 (2000-08-01), Hawwa et al.
patent: 6118637 (2000-09-01), Wright et al.
patent: 6134087 (2000-10-01), Khan et al.
patent: 6157522 (2000-12-01), Murphy et al.
patent: 6166874 (2000-12-01), Kim
patent: 6222706 (2001-04-01), Stefansky et al.
patent: 6268983 (2001-07-01), Imada et al.
patent: 6278587 (2001-08-01), Mei
patent: 6310750 (2001-10-01), Hawwa et al.
patent: 6512659 (2003-01-01), Hawwa et al.
patent: 198 16 909 (1998-11-01), None
patent: 0 704 837 (1996-04-01), None
patent: 0 886 264 (1998-12-01), None
patent: 07039367 (1995-02-01), None
patent: 9-288812 (1997-11-01), None
patent: 9-289342 (1997-11-01), None
patent: 10-283621 (1998-10-01), None
patent: 2000-348456 (2000-12-01), None
patent: 445062 (1974-10-01), None
patent: WO 97/39447 (1997-10-01), None
patent: WO 98/19304 (1998-05-01), None
patent: WO 98/20486 (1998-05-01), None
patent: WO 98/27547 (1998-06-01), None
patent: WO 98/37552 (1998-08-01), None
patent: WO 99/06993 (1999-02-01), None
“Production of continuous piezoelectric fibers for sensor/actuator applications”; French, J.D.; Weitz, G.E.; Luke, J.E.; Cass, R.B Jadidian, B.; Janas, B.; Safari, A.; International Symposium on Aug. 18-21, 1996; pp. 867-870.
Piezoelectric Microactuator Compensating for Off-Track Errors in Magnetic Disk Drives, Advanced Information Storage Systems, vol. 5, p. 119-126 (1993).
Microactuation White Paper, Robert Evans, Jason Griesbach and Pete Carlson, Sep. 3, 1998.
Dynamic Head/Suspension Assembly Preload Adjustment, Research Disclosure, Jun. 1986, No. 266 © Kenneth Mass Publications Ltd., England.
Boismier Dennis A.
Heffelfinger Jason R.
Faegre & Benson LLP
Hutchinson Technology Inc.
Kim Paul D.
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