Patent US3713119A successfully refreshed from Google Patents.
US3713119A
Expired / Lapsed
US
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Domain propagation arrangement
Assignee: Individual
•
Filing: 1971-05-14
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Granted: 1973-01-23
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Expires: 1991-05-14
Abstract
Abstract The geometry of the overlay pattern of elements which cause the movement of single wall domains in response to a reorienting inplane field in single wall domain arrangements has been found to exhibit enhanced operating characteristics if the extremes of the elements therein are of enlarged geometry to concentrate flux.
Inventors
- 👤 A Bobeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:34
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/02; G11C19/08; G11C19/0808; G11C19/0816
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
121 words
A domain propagation arrangement comprising a layer of material in which single wall domains can be moved, and a pattern of magnetically soft elements juxtaposed with said layer for moving single wall domains in said layer in response to a reorienting in-plane field,each of said elements having a center section with a long dimension, a succession of said elements being disposed such that the long dimensions thereof when aligned with said in-plane field in consecutive orientations have an associated de-magnetizing field of a first value, said elements having a first geometry including an enlarged end portion such that each of said elements when aligned with said in-plane field is magnetically saturated for an in-plane field of less than said first value.
Claim 2
Dependent Claim
121 words
A domain propagation arrangement comprising a layer of material in which single wall domains can be moved, and a pattern of magnetically soft elements juxtaposed with said layer for moving single wall domains in said layer in response to a reorienting in-plane field,each of said elements having a center section with a long dimension, a succession of said elements being disposed such that the long dimensions thereof when aligned with said in-plane field in consecutive orientations have an associated de-magnetizing field of a first value, said elements having a first geometry including an enlarged end portion such that each of said elements when aligned with said in-plane field is magnetically saturated for an in-plane field of less than said first value.
Claim 3
Dependent Claim
15 words
An arrangement in accordance with claim 1 wherein said first geometry comprises enlarged end portions.
Claim 4
Dependent Claim
39 words
An arrangement in accordance with claim 2 wherein enlarged end portions of successive ones of said elements are disposed with respect to one another along an axis for defining a path for the movement of single wall domains therealong.
Claim 5
Dependent Claim
24 words
An arrangement in accordance with claim 3 also including means for providing an in-plane field reorienting by rotation in the plane of said layer.
Claim 6
Dependent Claim
81 words
A magnetic domain arrangement comprising a layer of material in which single wall domains can be moved, and a pattern of magnetically soft elements juxtaposed with said layer and responsive to a reorienting in-plane field for moving single wall domains along a path, each of said elements comprising an elongated section having enlarged end portions with geometries such that alignment of said field with said elongated section of ones of said elements results in the concentration of flux in said ends.
Claim 7
Dependent Claim
81 words
A magnetic domain arrangement comprising a layer of material in which single wall domains can be moved, and a pattern of magnetically soft elements juxtaposed with said layer and responsive to a reorienting in-plane field for moving single wall domains along a path, each of said elements comprising an elongated section having enlarged end portions with geometries such that alignment of said field with said elongated section of ones of said elements results in the concentration of flux in said ends.
Claim 8
Dependent Claim
17 words
An arrangement in accordance with claim 5 wherein said end portions are enlarged into a circular geometry.
References Cited (Backward Citations)
US3470547A
Cited
US3599190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |