EP0326749A2
Expired / Lapsed
EP
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Magneto-resistive sensor element
Assignee: Seagate Technology International
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Filing: 1988-11-22
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Granted: —
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Expires: 2008-11-22
Abstract
Abstract A magneto-resistive sensor has a relatively wide central region (12), relatively narrow neck regions (16) and a transition region (14) between each neck region and the central region. The sensor element may be symmetrical about a centre line or skewed relative to a centre line.
Inventors
- 👤 Gregory Stephen Mowry
- 👤 Terry Blake Mitchell
- 👤 Charles Henry Tolman
- 👤 Peter Kurt George
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 21:43
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/33; G11B5/39; G11B5/3903; G11B5/398; G01; G01R; G01R33/00; G01R33/02; G01R33/06; G01R33/09
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
31 words
A magneto-resistive sensor element characterised by having a relatively wide central region (12;22), relatively narrow neck regions (16;26,30) and a transition region (14;24,28) between each neck region and the central region.
Claim 2
Dependent Claim
31 words
A magneto-resistive sensor element characterised by having a relatively wide central region (12;22), relatively narrow neck regions (16;26,30) and a transition region (14;24,28) between each neck region and the central region.
Claim 3
Dependent Claim
17 words
A magneto-resistive sensor element as claimed in claim 1 characterised by being symmetrical about a centre line.
Claim 4
Dependent Claim
23 words
A magneto-resistive sensor element as claimed in claim 1 characterised in that the transition regions (24,28) are skewed relative to a centre line.
Claim 5
Dependent Claim
30 words
A magneto-resistive sensor element as claimed in claim 2 or 3 characterised in that the transition regions (14;24,28) each have at least one side (32,34) inclined to the centre line.
Claim 6
Dependent Claim
21 words
A magneto-resistive sensor element as claimed in any preceding claim characterised in that the central region (12;22) has opposed parallel sides.
Claim 7
Dependent Claim
33 words
A magneto-resistive sensor element as claimed in claim 5 characterised in that an easy axis of magnetisation is oriented in a direction parallel to the opposed parallel sides of the central region (12).
Claim 8
Dependent Claim
35 words
A magneto-resistive sensor element as claimed in claim 5 characterised in that an easy axis of magnetisation is oriented in a direction at an angle to the opposed parallel sides of the central portion (22).
Claim 9
Dependent Claim
81 words
A bottleneck magneto-resistive element characterised by having a central wide portion (12;22) with opposed substantially parallel sides and two ends, a narrowing transition portion (14;24,28) connected to each end with at least one inclined side (32,34), and a bottleneck portion (16;26,30) connected to each transition portion, the bottleneck portion having a width less than the central wide portion and being rectangular in shape with the sides of the rectangle's long dimension being substantially parallel with the sides of said central region.
Claim 10
Dependent Claim
81 words
A bottleneck magneto-resistive element characterised by having a central wide portion (12;22) with opposed substantially parallel sides and two ends, a narrowing transition portion (14;24,28) connected to each end with at least one inclined side (32,34), and a bottleneck portion (16;26,30) connected to each transition portion, the bottleneck portion having a width less than the central wide portion and being rectangular in shape with the sides of the rectangle's long dimension being substantially parallel with the sides of said central region.
Claim 11
Dependent Claim
30 words
A magneto-resistive element as claimed in claim 8 characterised in that the shape is symmetrical about a centre line substantially parallel with the ends of said central wide portion (12;22).
References Cited (Backward Citations)
No citation records indexed.
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