US5041932A
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Integrated magnetic read/write head/flexure/conductor structure
Assignee: Seagate Technology LLC
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Filing: 1989-11-27
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Granted: 1991-08-20
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Expires: 2009-11-27
Abstract
Abstract An integrated head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving medium, such as a disk or drum, and a method for manufacturing the same. The proposed structure takes the form of a micro-dimension, elongate, dielectric flexure body, and embedded within such body both magnetic read/write pole structure, and electrical coil and conductor structure operatively associated with the pole structure. The flexure body and the embedded constituents are formed on an atom-by-atom basis utilizing one or more conventional material-deposition processes.
Inventors
- 👤 Harold J. Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:16
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/31; G11B5/3103; G11B5/48; G11B5/4806; G11B5/484; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/49036; Y10T29/49041; Y10T29/49043; Y10T29/4906; Y10T29/49064
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
67 words
An integrated, unitary read/write head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving medium, such as a disk or drum, said structure comprising an elongate dielectric flexure body, and embedded within said body, a magnetic read/write head including pole means, and electrical coil and conductor means operatively associated with said pole means, said structure having a mass less than about 1.5-milligrams.
Claim 2
Dependent Claim
67 words
An integrated, unitary read/write head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving medium, such as a disk or drum, said structure comprising an elongate dielectric flexure body, and embedded within said body, a magnetic read/write head including pole means, and electrical coil and conductor means operatively associated with said pole means, said structure having a mass less than about 1.5-milligrams.
Claim 3
Dependent Claim
43 words
The read/write structure of claim 1 wherein said pole means comprises a probe type main pole in conjunction with an auxiliary or flux return pole for recording on two-layer media whose easy axis of magnetization is normal to the plane of the media.
Claim 4
Dependent Claim
37 words
The read/write structure of claim 1, wherein said pole means has a gapped two-pole or "ring" type configuration as utilized conventionally for recording on media whose easy axis of magnetization is in the plane of the media.
Claim 5
Dependent Claim
18 words
The read/write structure of claims 1, 2 or 3, wherein said flexure body is formed of aluminum oxide.
Claim 6
Dependent Claim
47 words
The read/write structure of claims 1, 2 or 3 which has an overall length in the range of about 0.2- to about 0.5-inches, an overall width in the range of about 4- to about 20-mils, and a thickness in the range of about 15- to about 65-microns.
Claim 7
Dependent Claim
44 words
The read/write structure of claim 6 which has an overall length in the range of about 0.2- to about 0.5-inches, an overall width in the range of about 4- to about 20-mils, and a thickness in the range of about 15- to about 65-microns.
Claim 8
Dependent Claim
68 words
An integrated, unitary read/write/head/flexure/conductor structure for the reading and writing of information in sliding contact with a relatively moving recording medium, such as a disk or drum, said structure comprising an elongate dielectric flexure body, and embedded within said body, a magnetic read/write head including pole means, and electrical coil and conductor means operatively associated with said pole means, said structure having a mass less than about 1.5-milligrams.
Claim 9
Dependent Claim
68 words
An integrated, unitary read/write/head/flexure/conductor structure for the reading and writing of information in sliding contact with a relatively moving recording medium, such as a disk or drum, said structure comprising an elongate dielectric flexure body, and embedded within said body, a magnetic read/write head including pole means, and electrical coil and conductor means operatively associated with said pole means, said structure having a mass less than about 1.5-milligrams.
Claim 10
Dependent Claim
15 words
The read/write structure of claim 7, wherein said flexure body is formed of aluminum oxide.
Claim 11
Dependent Claim
44 words
The read/write structure of claim 7, which has an overall length in the range of about 0.2- to about 0.5-inches, an overall width in the range of about 4- to about 20mils, and a thickness in the range of about 15- to about 65-microns.
Claim 12
Dependent Claim
44 words
The read/write structure of claim 8 which has an overall length in the range of about 0.2- to about 0.5-inches, an overall width in the range of about 4- to about 20-mils, and a thickness in the range of about 15- to about 65-microns.
Claim 13
Dependent Claim
87 words
An integrated, unitary read/write head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving medium, such as a disk or drum, said structure comprising plural elongate dielectric flexure bodies independently flexible relative to one another and joined to a common support base, and embedded within each said body, a magnetic read/write head including pole means, and electrical coil and conductor means operatively associated with said pole means, each said body and associated embedded elements having a combined mass less than about 1.5-milligrams.
Claim 14
Dependent Claim
87 words
An integrated, unitary read/write head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving medium, such as a disk or drum, said structure comprising plural elongate dielectric flexure bodies independently flexible relative to one another and joined to a common support base, and embedded within each said body, a magnetic read/write head including pole means, and electrical coil and conductor means operatively associated with said pole means, each said body and associated embedded elements having a combined mass less than about 1.5-milligrams.
Claim 15
Dependent Claim
42 words
The read/write structure of claim 11, wherein each pole means comprises a probe-type main pole in conjunction with an auxiliary or flux return pole for recording on two-layer media whose easy axis of magnetization is normal to the plane of the media.
Claim 16
Dependent Claim
37 words
The read/write structure of claims 11, wherein each pole means has a gapped two-pole or "ring" type configuration as utilized conventionally for recording on media whose easy axis of magnetization is in the plane of the media.
Claim 17
Dependent Claim
18 words
The read/write structure of claims 11, 12 or 13, wherein each flexure body is formed of aluminum oxide.
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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) | 1994-08-19 | 1995-02-18 | 1995-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-19 | 1999-02-18 | 1999-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-19 | 2003-02-18 | 2003-08-20 | $7700.00 | Window Closed / Lapsed |