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US5148340A Expired / Lapsed US ⏱️ 0.0 years remaining

Bifurcated air bearing actuator assembly for a disk drive system

Assignee: International Business Machines Corp
•
Filing: 1990-04-18
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Granted: 1992-09-15
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Expires: 2010-04-18
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Abstract

Abstract An actuator comprises a slotted stator which is mounted in a stator frame. The stator is connected to the frame by an attachment which allows the stator to move rotationally, axially and laterally relative to the frame without distorting the dimensions of the stator. The stator has an air bearing outer surface which receives a slider. A head arm assembly is attached to the slider such that the head arm assembly may be completely positioned within the stator slot when the slider is fully retracted.

Inventors

  • 👤 Robert B. Watrous

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 14:21
CPC Classifications
G; G11; G11B; G11B21/00; G11B21/16; G11B21/20; G11B21/21; G11B5/00; G11B5/48; G11B5/52; G11B5/53

Claims Analysis

Total Claims: 30
Claim 1
Independent Claim 88 words
An actuator system comprising: a stator having a gas bearing outer surface, a first end of the stator for positioning proximate a data storage disk, the first end having a slotted section; a slider sized to fit around the outer surface of the stator for linear movement along said gas bearing outer surface; and a transducer arm assembly attached to said slider and sized to fit within the slotted section such that the transducer arm assembly is positioned within the slotted section when the slider is fully retracted.
Claim 2
Dependent Claim 88 words
An actuator system comprising: a stator having a gas bearing outer surface, a first end of the stator for positioning proximate a data storage disk, the first end having a slotted section; a slider sized to fit around the outer surface of the stator for linear movement along said gas bearing outer surface; and a transducer arm assembly attached to said slider and sized to fit within the slotted section such that the transducer arm assembly is positioned within the slotted section when the slider is fully retracted.
Claim 3
Dependent Claim 67 words
The system of claim 1, wherein the stator has a plurality of orifices on said gas bearing outer surface for delivering gas to said gas bearing outer surface, and the slider has a chamber corresponding to each of said orifices, such that said gas from said orifices fills said chambers for any position of the slider and the slider is supported by the gas in the chambers.
Claim 4
Dependent Claim 19 words
The system of claim 2, wherein the gas is air and pressure in the chambers is approximately 2 psi.
Claim 5
Dependent Claim 25 words
The system of claim 1, further comprising a stator frame having attachment means for mounting the stator without interfering with the movement of the slider.
Claim 6
Dependent Claim 20 words
The system of claim 4, wherein the attachment means allows the frame and stator to rotate relative to one another.
Claim 7
Dependent Claim 21 words
The system of claim 4, wherein the attachment means allows the frame and stator to move axially relative to one another.
Claim 8
Dependent Claim 21 words
The system of claim 4, wherein the attachment means allows the frame and stator to move laterally relative to one another.
Claim 9
Dependent Claim 17 words
The system of claim 1, wherein the slider is made of glass in a vacuum shrinking process.
Claim 10
Dependent Claim 120 words
A data storage disk drive system comprising: a data storage disk containing at least one surface for storing information; an actuator assembly for positioning a transducer arm assembly relative to the disk, said actuator assembly comprising a stator having a gas bearing outer surface, a first end of the stator for positioning proximate the data storage disk, the first end having a slotted section, a slider sized to fit around the outer surface of the stator for linear movement along said gas bearing outer surface, and a transducer arm assembly attached to said slider and sized to fit within the slotted section such that the transducer arm assembly is positioned within the slotted section when the slider is fully retracted.
Claim 11
Dependent Claim 120 words
A data storage disk drive system comprising: a data storage disk containing at least one surface for storing information; an actuator assembly for positioning a transducer arm assembly relative to the disk, said actuator assembly comprising a stator having a gas bearing outer surface, a first end of the stator for positioning proximate the data storage disk, the first end having a slotted section, a slider sized to fit around the outer surface of the stator for linear movement along said gas bearing outer surface, and a transducer arm assembly attached to said slider and sized to fit within the slotted section such that the transducer arm assembly is positioned within the slotted section when the slider is fully retracted.
Claim 12
Dependent Claim 67 words
The system of claim 9, wherein the stator has a plurality of orifices on said gas bearing outer surface for delivering gas to said gas bearing outer surface, and the slider has a chamber corresponding to each of said orifices, such that said gas from said orifices fills said chambers for any position of the slider and the slider is supported by the gas in the chambers.
Claim 13
Dependent Claim 19 words
The system of claim 10, wherein the gas is air and pressure in the chambers is approximately 2 psi.
Claim 14
Dependent Claim 25 words
The system of claim 9, further comprising a stator frame having attachment means for mounting the stator without interfering with the movement of the slider.
Claim 15
Dependent Claim 22 words
The system of claim 12, wherein the attachment means allows the frame and the stator to rotate axially relative to one another.
Claim 16
Dependent Claim 21 words
The system of claim 12, wherein the attachment means allows the frame and stator to move axially relative to one another.
Claim 17
Dependent Claim 21 words
The system of claim 12, wherein the attachment means allows the frame and stator to move laterally relative to one another.
Claim 18
Dependent Claim 17 words
The system of claim 9, wherein the slider is made of glass in a vacuum shrinking process.
Claim 19
Dependent Claim 123 words
An actuator system comprising: a stator having a gas bearing outer surface and having a predetermined cross-section, a first end of the stator for positioning proximate a data storage disk, the first end having a slotted section; a slider sized to fit around the outer surface of the stator for linear movement along the gas bearing outer surface, the slider having a shape complimentary to the predetermined cross-section such that a small predetermined spacing is produced between the slider and the gas bearing outer surface of the stator; and a transducer arm assembly attached to said slider and sized to fit within the slotted section such that the transducer arm assembly is positioned within the slotted section when the slider is fully retracted.
Claim 20
Dependent Claim 123 words
An actuator system comprising: a stator having a gas bearing outer surface and having a predetermined cross-section, a first end of the stator for positioning proximate a data storage disk, the first end having a slotted section; a slider sized to fit around the outer surface of the stator for linear movement along the gas bearing outer surface, the slider having a shape complimentary to the predetermined cross-section such that a small predetermined spacing is produced between the slider and the gas bearing outer surface of the stator; and a transducer arm assembly attached to said slider and sized to fit within the slotted section such that the transducer arm assembly is positioned within the slotted section when the slider is fully retracted.
Claim 21
Dependent Claim 13 words
The system of claim 17, wherein the predetermined cross-section is rectangular in shape.
Claim 22
Dependent Claim 13 words
The system of claim 17, wherein the predetermined cross-section is hexagonal in shape.
Claim 23
Dependent Claim 14 words
The system of claim 17, wherein the predetermined cross-section is a parallelogram in shape.
Claim 24
Dependent Claim 14 words
The system of claim 17, wherein the predetermined cross-section is a square in shape.
Claim 25
Dependent Claim 66 words
The system of claim 17, wherein the stator has a plurality of orifices on said gas bearing outer surface for delivering gas to said gas bearing outer surface, the slider has a chamber corresponding to each of said orifices, such that said gas from said orifices fills said chambers for any position of the slider and the slider is supported by the gas in the chambers.
Claim 26
Dependent Claim 19 words
The system of claim 22, wherein the gas is air and pressure in the chambers is approximately 2 psi.
Claim 27
Dependent Claim 37 words
The system of claim 22, wherein the gas bearing outer surface further includes exhaust slots for discharging gas from the gas bearing outer surface such that there is a uniform pressure drop along edges of the chambers.
Claim 28
Dependent Claim 33 words
The system of claim 22, further comprising a stator frame having attachment means for mounting the stator at the first end and a second end without interfering with the movement of the slider.
Claim 29
Dependent Claim 48 words
The system of claim 25, wherein the slotted section separates first and second arm sections of the stator and the attachment means comprises a first flexible strap connecting the first arm section to the frame and a second flexible strap connecting the second arm section to the frame.
Claim 30
Dependent Claim 84 words
The system of claim 25, wherein the slotted section separates first and second arm sections of the stator and the attachment means comprises a first flexible strap bent along two edges and connecting the first arm section to the frame, and a second flexible strap connected to the frame and having a ball member for reception in an aperture in the second arm section, and a pin member extending from the frame for reception in an aperture in the second end of the stator.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-09-15 1996-03-16 1996-09-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-09-15 2000-03-16 2000-09-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-09-15 2004-03-16 2004-09-15 $7700.00 Window Closed / Lapsed

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