Piezoelectric microactuators with substantially fixed axis...

Dynamic magnetic information storage or retrieval – Head mounting – For adjusting head position

Reexamination Certificate

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C310S311000

Reexamination Certificate

active

06961221

ABSTRACT:
An actuator is coupled between a head and a flexure, the actuator providing submicron positioning of the head while reducing undesirable vibrations of the flexure. The actuator includes a stator and a rotor, with a plurality of deformable elements coupled between the stator and the rotor. In one aspect the rotor, stator and deformable elements are constructed so that the rotor has a substantially fixed axis of rotation relative to the stator, and the actuation of a transducer in the head is magnified. In another aspect the rotor is coupled to the head so that the axis of rotation is substantially aligned with the center of mass of the head and rotor, increasing the frequency at which the actuator can move the head and reducing vibrations in the flexure caused by actuation of the head.

REFERENCES:
patent: 4188645 (1980-02-01), Ragle et al.
patent: 4583135 (1986-04-01), Kimura
patent: 5856896 (1999-01-01), Berg et al.
patent: 5898541 (1999-04-01), Boutaghou et al.
patent: 5912526 (1999-06-01), Okawa et al.
patent: 6046888 (2000-04-01), Krinke et al.
patent: 6052251 (2000-04-01), Mohajerani et al.
patent: 6069771 (2000-05-01), Boutaghou et al.
patent: 6108175 (2000-08-01), Hawwa et al.
patent: 6115223 (2000-09-01), Berg et al.
patent: 6118637 (2000-09-01), Wright et al.
patent: 6198145 (2001-03-01), Ferrari et al.
patent: 6246552 (2001-06-01), Soeno et al.
patent: 6327120 (2001-12-01), Koganezawa et al.
patent: 6359758 (2002-03-01), Boutaghou
patent: 6587313 (2003-07-01), Kurihara et al.
patent: 6624553 (2003-09-01), Sivadasan et al.
patent: 6624982 (2003-09-01), Masuda et al.
patent: 6653763 (2003-11-01), Wang et al.
U.S. Appl. No. 09/834,164, filed Apr. 12, 2001, Bonin.
U.S. Appl. No. 09/826,173, filed Apr. 4, 2001, Sividasan et al.
U.S. Appl. No. 09/811,112, filed Mar. 16, 2001, Wu et al.
U.S. Appl. No. 09/808,843, filed Mar. 15, 2001, Crane et al.
U.S. Appl. No. 09/768,777, filed Jan. 22, 2001, Ferrari et al.
U.S. Appl. No. 09/034,540, filed Mar. 3, 1998, Hawwa et al.
IEEE Transactions on Magnetics article entitled “Piezoelectric Piggy-Back Microactuator for Hard Disk Drive”, by Yoshikazu Soeno et al., vol. 35, No. 2, Mar. 1999, pp. 983-987.
Data Storage Magazine article entitled “Keeping Heads on Track with Dual-Stage Actuators”, by Fred Stevens et al., 5 pages, printed Jun. 14, 2001.
Internet article entitled “Keeping Heads of Track With Dual-Stage Actuators”, by F. Stevens and J. DeLellis, vol. 7, Issue 6, Jun. 2000, 6 pages, http://ds.pennwellnet.com/content/Artic...ON—ID=14&ARTICLE—ID=75290&VERSION—NUM=2.
Article entitled “Silicon Micromachined Electromagnetic Microactuators For Rigid Disk Drives”, by W. Tang et al., 2 pages, date unknown.
Internet article entitled “Surveying Micro-Positioning Technology for Advanced Disk Drives”, by B. McInerney, vol. 7, Issue 8, Aug. 2000, 4 pages, http://ds.pennwellnet.com/content/Articl...ION—ID=14&ARTICLE—ID=80176&VERSION—NUM=2.
Internet article entitled “IBM High-Bandwidth, High-Accuracy MEMS Micropositioners for Magnetic Disk Drives”, printed Jul. 31, 2000, 17 pages.

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