Dynamic magnetic information storage or retrieval – Head mounting – For adjusting head position
Reexamination Certificate
2007-06-12
2007-06-12
Chen, Tianjie (Department: 2627)
Dynamic magnetic information storage or retrieval
Head mounting
For adjusting head position
Reexamination Certificate
active
09933218
ABSTRACT:
A system and method for controlling the position of a digital data storage device slider through the use of an electro-thermal micromechanical actuator is disclosed. A movable member is etched into a face of a slider opposite the air-bearing surface of the slider. The movable member is substantially freestanding in relation to the slider, having only a single end connected to the slider. An electrically actuated heater element with two parallel current paths is disposed on the movable member. One of the current paths is substantially narrower than the other current path. When a current is passed through the heater element, the narrower current path heats up more quickly than the wider current path. By varying the current passed through the heater element in a selected manner, a distortion of the movable member is harnessed and used to create a relative motion in the slider body, allowing the slider to be quickly and exactly located over the centerline of a track of a storage device.
REFERENCES:
patent: 4814908 (1989-03-01), Schmitz
patent: 5184265 (1993-02-01), Foote et al.
patent: 5440437 (1995-08-01), Sanada et al.
patent: 5745319 (1998-04-01), Takekado et al.
patent: 5764432 (1998-06-01), Kasahara
patent: 5856967 (1999-01-01), Mamin et al.
patent: 5959801 (1999-09-01), Gillis et al.
patent: 5991113 (1999-11-01), Meyer et al.
patent: 6391216 (2002-05-01), Nakatani
patent: 2004/0027709 (2004-02-01), Hamaguchi et al.
patent: 242 597 (1987-10-01), None
patent: 59-203272 (1984-11-01), None
patent: 62-3476 (1987-01-01), None
patent: 03069073 (1991-03-01), None
patent: 4-157685 (1992-05-01), None
patent: 04221474 (1992-08-01), None
patent: 07312045 (1995-11-01), None
patent: 08287534 (1996-11-01), None
K. H. Stokes and R. B. Watrous, “Magentic Head with Piezoelectric Positioning”, vol. 16, No. 5, Oct. 1973, p. 1429.
G. Elsner, H. Hinkel and E. Prinz, “Magnetic Head with Retractable R/W Element”, vol. 27, No. 7B, Dec. 1984, pp. 4573-4574.
Bruce D.S. Chou, Change-Nan Chen and Jin-Shown Shie, “Micromachining on (111)-Oriented Silicon”, Sensors and Actuators 75 (1999) 271-277.
John H. Comtois, M. Adrian Michalicek and Carol Craig Barron, “Electrothermal Actuators Fabricated in Four-level Planarized Surface Micromachined Polycrystalline Silicon”, Sensors and Actutors A 70 (1998) 23-31.
K. H. Stokes and R. B. Watrous, “Magnetic Head with Piezoelectric Positioning”, vol. 16 No. 5, Oct. 1973, p. 1429.
G. Elsner, H. Hinkel and E. Prinz, “Magnetic Head with Retractable R/W Element”, vol. 27 No. 7B, Dec. 1984, pp. 4573-4574.
Chen Tianjie
Hitachi Global Storage Technologies
Kunzler & McKenzie
LandOfFree
Electro-thermal micromechanical actuator for finitely... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electro-thermal micromechanical actuator for finitely..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electro-thermal micromechanical actuator for finitely... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3808484