Patent US4769727A successfully refreshed from Google Patents.
US4769727A
Expired / Lapsed
US
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Self-loading magnetic head slider
Assignee: Seagate Technology LLC
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Filing: 1986-08-20
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Granted: 1988-09-06
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Expires: 2006-08-20
Abstract
Abstract An improved self-loading magnetic head slider for recording and reading data on a magnetic storage disk, is characterized by the addition of aerodynamically designed wings used for lowering the slider close to the surface of the disk to a designed head-to-disk separation as the disk is rotated. The magnetic head slider does not contact the magnetic storage disk surface.
Inventors
- 👤 James C. Mao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:27
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/58; G11B5/60; G11B5/6005
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
186 words
A self-loading magnetic head slider gimballed and attached to one end of a head suspension arm for transcribing data onto an adjacent rotating disk, the arm suspending the slider spaced from the disk surface when the disk is stopped, said arm distortable to shift the head toward the disk, the slider comprising: an "H"-shaped negative pressure slider housing having a straight leading edge, a straight trailing edge, longitudinal side rails on opposite sides, a transverse cross rail and a top and bottom surface, the suspension arm connected to the top surface of the housing, the trailing edge of the housing receiving a read/write head thereon; and aerodynamic surfaces extending outwardly from and abutting the opposite sides of the housing, the aerodynamic surfaces having straight leading edges and straight trailing edges parallel to the straight leading and trailing edges of the slider housing, the aerodynamic surfaces by air dragged by the disk rotation past them, creating lift to distort said arm to draw the straight trailing edge of the slider housing toward the disk into a required spacing from the disk surface as the disk is rotated.
Claim 2
Dependent Claim
186 words
A self-loading magnetic head slider gimballed and attached to one end of a head suspension arm for transcribing data onto an adjacent rotating disk, the arm suspending the slider spaced from the disk surface when the disk is stopped, said arm distortable to shift the head toward the disk, the slider comprising: an "H"-shaped negative pressure slider housing having a straight leading edge, a straight trailing edge, longitudinal side rails on opposite sides, a transverse cross rail and a top and bottom surface, the suspension arm connected to the top surface of the housing, the trailing edge of the housing receiving a read/write head thereon; and aerodynamic surfaces extending outwardly from and abutting the opposite sides of the housing, the aerodynamic surfaces having straight leading edges and straight trailing edges parallel to the straight leading and trailing edges of the slider housing, the aerodynamic surfaces by air dragged by the disk rotation past them, creating lift to distort said arm to draw the straight trailing edge of the slider housing toward the disk into a required spacing from the disk surface as the disk is rotated.
Claim 3
Dependent Claim
13 words
The slider as described in claim 1 wherein the aerodynamic surfaces define wings.
Claim 4
Dependent Claim
13 words
The slider as described in claim 2 wherein the wings are wedge shaped.
Claim 5
Dependent Claim
13 words
The slider as described in claim 2 wherein the wings are airfoil shaped.
Claim 6
Dependent Claim
23 words
The slider as described in claim 1 wherein the aerodynamic surfaces define wings integrally formed in the opposite sides of the slider housing.
Claim 7
Dependent Claim
22 words
The slider as described in claim 1 wherein the aerodynamic surfaces define wings attached to the opposite sides of the slider housing.
References Cited (Backward Citations)
US3193835A
Cited
US4218715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-06 | 1992-03-07 | 1992-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-06 | 1996-03-07 | 1996-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-06 | 2000-03-07 | 2000-09-06 | $7700.00 | Window Closed / Lapsed |