US5196974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rail-type floating magnetic head slider
Assignee: Hitachi Ltd
•
Filing: 1991-01-15
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Granted: 1993-03-23
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Expires: 2011-01-15
Abstract
Abstract Protruding portions are formed on outflow ends of slider rails on a floating magnetic head slider. This floating magnetic head slider is of rails type. Each of the protruding portion extends farther to the outside as it approaches the outflow end. Or the external sides of the rails on the magnetic head slider are so arranged that angles formed thereat diverge from the side of the inflow end to the side of the outflow end, and a pressure adjusting aperture is formed on the outflow side of each of the rails. Because of the above arrangement, it is possible to provide a magnetic head unit in which particles, such as dust, adhering to the disk surface are effectively removed, and in which floating stability is not impaired. Removing the particles on the disk surface is not limited by seeking directions even while the magnetic disk unit is in operation.
Inventors
- 👤 Teruyoshi Higashiya
- 👤 Yoshihiko Miyake
- 👤 Mikio Takada
- 👤 Toshinori Kazama
- 👤 Kousaku Wakatsuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:03
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/58; G11B5/60
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
A magnetic head slider, having a disk-advancing end facing a direction in which a rotating disk advances towards the magnetic slider, and a disk-receiving end facing a direction in which the rotating disk recedes from the magnetic head slider, comprising a pair of slider rails provided on opposing sides of said magnetic head slider, said slider rails having opposing inner sides which extend substantially parallel to a tangential velocity vector line of the rotating magnetic disk, and outer sides having protruding portions which diverge in the direction of the disk-receding end of said magnetic head slider, said protruding portions extending outwardly beyond said outer sides at the disk-advancing end of said magnetic head slider when viewed in a direction parallel to said inner sides of said slider rails.
Claim 2
Dependent Claim
128 words
A magnetic head slider, having a disk-advancing end facing a direction in which a rotating disk advances towards the magnetic slider, and a disk-receiving end facing a direction in which the rotating disk recedes from the magnetic head slider, comprising a pair of slider rails provided on opposing sides of said magnetic head slider, said slider rails having opposing inner sides which extend substantially parallel to a tangential velocity vector line of the rotating magnetic disk, and outer sides having protruding portions which diverge in the direction of the disk-receding end of said magnetic head slider, said protruding portions extending outwardly beyond said outer sides at the disk-advancing end of said magnetic head slider when viewed in a direction parallel to said inner sides of said slider rails.
Claim 3
Dependent Claim
46 words
A magnetic head slider according to claim 1, wherein said pair of slider rails are shaped in such a manner that both sides of a substantially square slider are cut from the sides of floating faces, whereby said protruding portions are formed on the disk-receding ends.
Claim 4
Dependent Claim
115 words
A magnetic head slider for use on a rotatable magnetic recording medium having concentric tracks thereon, comprising a plurality of rails cooperating with the magnetic recording medium in generating a gas bearing effect therebetween, said rails having inner sides extending substantially parallel to a tangential velocity vector line of the rotating magnetic recording medium, and outer sides having skew angles so as to diverge from a disk-advancing end towards a disk-receding end of said rails such that said outer sides protrude at their disk-receding ends outwardly beyond said outer sides at the disk-advancing end of said rails, and at least one pressure adjusting aperture formed in a portion near the disk-receding end of said rails.
Claim 5
Dependent Claim
115 words
A magnetic head slider for use on a rotatable magnetic recording medium having concentric tracks thereon, comprising a plurality of rails cooperating with the magnetic recording medium in generating a gas bearing effect therebetween, said rails having inner sides extending substantially parallel to a tangential velocity vector line of the rotating magnetic recording medium, and outer sides having skew angles so as to diverge from a disk-advancing end towards a disk-receding end of said rails such that said outer sides protrude at their disk-receding ends outwardly beyond said outer sides at the disk-advancing end of said rails, and at least one pressure adjusting aperture formed in a portion near the disk-receding end of said rails.
Claim 6
Dependent Claim
32 words
A magnetic head unit according to claim 3, wherein at least one pressure adjusting aperture is formed on the disk-advancing side of each of said rail portions on said magnetic head slider.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-03-22 | 1996-09-21 | 1997-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-22 | 2000-09-21 | 2001-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-22 | 2004-09-21 | 2005-03-23 | $7700.00 | Window Closed / Lapsed |