Patent US3864671A successfully refreshed from Google Patents.
US3864671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Package structure for movable magnetic domain devices
Assignee: Raytheon Co
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Filing: 1972-04-10
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Granted: 1975-02-04
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Expires: 1992-04-10
Abstract
Abstract There is disclosed a package or housing structure for signal translating or memory devices employing cylindrical magnetic domains (commonly called bubbles) in uniaxially anisotropic magnetic mediums such as single crystal platelets for the processing digital information. The package is such as to combine the functions of electrical termination of drive and sense circuitry for such magnetic bubble devices with a packaging structure which simultaneously provides the permanent magnetic bias needed for the operation of these devices. The package structure is fabricated from a material that combines the properties of electrical insulation and magnetic remanence and is shaped to provide not only a protective housing but also a magnet configuration which generates the required bias field. The material preferably forms both a high coercivity permanent magnet and an electrical insulator and may, for example, be one of the barium ferrite ceramics.
Inventors
- 👤 Jon H Myer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:57
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/02; G11C19/08; G11C19/085
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
304 words
In combination: a. a digital signal translating device of the type employing mobile magnetic domains in uniaxially anisotropic magnetic media capable of sustaining said domains in the presence of a predetermined magnetic biasing field and operative in response to electrical signals applied to said device over electrical conductors while such magnetic bias field is simultaneously applied thereto to move said magnetic domains between predtermined locations in said magnetic media; b. a package protectively enclosing said device, said package having means forming a rigid structural frame member of said package and consisting of a material which is both a high coercivity permanent magnet and an electrical insulator for simultaneously providing said package structural member, a magnetic biasing field, and an electrically insulating terminal strip for said conductors providing said electrical signals to said device in said package; c. means to support said device within said frame member in fixed relationship thereto; d. said support means including an optically non-distorting transparent portion positioned to permit visual inspection of said signal translating device during manufacturing assembly of said package device to determine by a visual image of said magnetic material that the intended mobile domains have, in fact, been created at the desired locations; e. electrical conductors for terminating the circuits of said signal translating device, said electrical conductors being insulatively supported by said frame member; and, f. electrically insulating cover means to close said package, said cover means including a transparent portion aligned with said transparent portion of said support means to permit said visual inspection of said signal translating device, said structrual frame member entirely surrounding said signal translating device in at least one plane of said device and said insulating cover means and said support means forming with said structural frame member a totally closed package in which said signal translating device is housed.
Claim 2
Dependent Claim
304 words
In combination: a. a digital signal translating device of the type employing mobile magnetic domains in uniaxially anisotropic magnetic media capable of sustaining said domains in the presence of a predetermined magnetic biasing field and operative in response to electrical signals applied to said device over electrical conductors while such magnetic bias field is simultaneously applied thereto to move said magnetic domains between predtermined locations in said magnetic media; b. a package protectively enclosing said device, said package having means forming a rigid structural frame member of said package and consisting of a material which is both a high coercivity permanent magnet and an electrical insulator for simultaneously providing said package structural member, a magnetic biasing field, and an electrically insulating terminal strip for said conductors providing said electrical signals to said device in said package; c. means to support said device within said frame member in fixed relationship thereto; d. said support means including an optically non-distorting transparent portion positioned to permit visual inspection of said signal translating device during manufacturing assembly of said package device to determine by a visual image of said magnetic material that the intended mobile domains have, in fact, been created at the desired locations; e. electrical conductors for terminating the circuits of said signal translating device, said electrical conductors being insulatively supported by said frame member; and, f. electrically insulating cover means to close said package, said cover means including a transparent portion aligned with said transparent portion of said support means to permit said visual inspection of said signal translating device, said structrual frame member entirely surrounding said signal translating device in at least one plane of said device and said insulating cover means and said support means forming with said structural frame member a totally closed package in which said signal translating device is housed.
Claim 3
Dependent Claim
272 words
In combination: a. a digital signal translating device of the type employing mobile magnetic domains in uniaxially anisotropic magnetic media capable of sustaining said domains in the presence of a predetermined magnetic biasing field and operative in response to electrical signals applied to said device over electrical conductors while such magnetic bias field is simultaneously applied thereto to move said magnetic domains between predetermined locations in said magnetic media; b. a package protectively enclosing said device, said package having means forming a rigid structural frame member of saiD package and consisting of a material which is both a high coercivity permanent magnet and an electrical insulator for simultaneously providing said package structrual member, a magnetic biasing field, and an electrically insulating terminal strip for said conductors providing said electrical signals to said device in said package; c. means to support said device within said frame member in fixed relationship thereto; d. electrical conductors for terminating the circuits of said signal translating device, said electrical conductors being insulatively supported by said frame member; and, e. electrically insulating cover means to close said package, said structural frame member forming an aperture magnet and entirely surrounding said signal translating device in at least one plane of said device to provide said biasing field therefor by the central aperture field of said magnet which is directed perpendicularly to said plane, said insulating cover means and said support means forming with said structural frame member a totally closed package in which said signal translating device is housed, and said insulating cover means coacting with said frame member to provide protective and insulative termination for said electrical conductors.
Claim 4
Dependent Claim
272 words
In combination: a. a digital signal translating device of the type employing mobile magnetic domains in uniaxially anisotropic magnetic media capable of sustaining said domains in the presence of a predetermined magnetic biasing field and operative in response to electrical signals applied to said device over electrical conductors while such magnetic bias field is simultaneously applied thereto to move said magnetic domains between predetermined locations in said magnetic media; b. a package protectively enclosing said device, said package having means forming a rigid structural frame member of saiD package and consisting of a material which is both a high coercivity permanent magnet and an electrical insulator for simultaneously providing said package structrual member, a magnetic biasing field, and an electrically insulating terminal strip for said conductors providing said electrical signals to said device in said package; c. means to support said device within said frame member in fixed relationship thereto; d. electrical conductors for terminating the circuits of said signal translating device, said electrical conductors being insulatively supported by said frame member; and, e. electrically insulating cover means to close said package, said structural frame member forming an aperture magnet and entirely surrounding said signal translating device in at least one plane of said device to provide said biasing field therefor by the central aperture field of said magnet which is directed perpendicularly to said plane, said insulating cover means and said support means forming with said structural frame member a totally closed package in which said signal translating device is housed, and said insulating cover means coacting with said frame member to provide protective and insulative termination for said electrical conductors.
Claim 5
Dependent Claim
248 words
In combination: a. a digital signal translating device of the type employing mobile magnetic domains in uniaxially anisotropic magnetic media capable of sustaining said domains in the presence of a predetermined magnetic biasing field and operative in response to electrical signals applied to said device over electrical conductors while such magnetic bias field is simultaneously applied thereto to move said magnetic domains between predetermined locations in said magnetic media; b. a package for said device, said package having means forming a rigid structural frame member of said package and consisting of a material which is both a high coercivity permanent magnet and an electrical insulator for simultaneously providing said package structrual member, a magnetic biasing field and an electrically insulating terminal strip for said conductors providing said electrical signals to said device in said package; c. means to support said device within said frame member in fixed relationship thereto; d. electrical conductors for terminating the circuits of said signal translating device, said electrical conductors being insulatively supported by said frame member for connection to external circuitry; e. said structural frame member forming an aperture magnet entirely surrounding said signal translating device in at least one plane of said device to provide said biasing field therefor by the central aperture field of said magnet which is directed perpendicularly to said plane and said member also forming with said support means a package in which said signal translating device is protectively housed; and f. cover means to close said package.
Claim 6
Dependent Claim
248 words
In combination: a. a digital signal translating device of the type employing mobile magnetic domains in uniaxially anisotropic magnetic media capable of sustaining said domains in the presence of a predetermined magnetic biasing field and operative in response to electrical signals applied to said device over electrical conductors while such magnetic bias field is simultaneously applied thereto to move said magnetic domains between predetermined locations in said magnetic media; b. a package for said device, said package having means forming a rigid structural frame member of said package and consisting of a material which is both a high coercivity permanent magnet and an electrical insulator for simultaneously providing said package structrual member, a magnetic biasing field and an electrically insulating terminal strip for said conductors providing said electrical signals to said device in said package; c. means to support said device within said frame member in fixed relationship thereto; d. electrical conductors for terminating the circuits of said signal translating device, said electrical conductors being insulatively supported by said frame member for connection to external circuitry; e. said structural frame member forming an aperture magnet entirely surrounding said signal translating device in at least one plane of said device to provide said biasing field therefor by the central aperture field of said magnet which is directed perpendicularly to said plane and said member also forming with said support means a package in which said signal translating device is protectively housed; and f. cover means to close said package.
Claim 7
Dependent Claim
301 words
A package for housing a digital signal translating device of the type employing mobile magnetic domains in uniaxially anisotropic magnetic media capable of sustaining said domains in the presence of a predetermined magnetic biasing field and operative in response to electrical signals applied to said device over electrical conductors while such magnetic bias field is simultaneously applied thereto to move said magnetic domains between predetermined locations in said magnetic media, said package comprising: a. means forming a rigid structural frame member of said package and consisting of a material which is both a high coercivity permanent magnet and an electrical insulator for simultaneously providing said package structural member, a magnetic biasing field, and an electrically insulating terminal strip for said conductors; b. means to support said device within said frame member in fixed relationship thereto; c. said support means including an optically non-distorting transparent portion positioned to permit visual inspection of said signal tranSlating device during manufacturing assembly of said package device to determine by a visual inspection of said signal translating device that the intended mobile domains have, in fact, been created at the desired location; and, d. electrically insulating cover means shaped to close said package, said cover means including a transpatent portion alignable with said transparent portion of said support means to permit visual inspection of said signal translating device, said structural frame member being shaped to entirely surround said signal translating device when said device is placed in said package in at least one plane of said device, said insulating cover means and said support means forming when assembled with said structural frame member a totally closed package in which said signal translating device may be housed, and said insulating cover means coacting with said frame member to provide protective and insulative termination for said electrical conductors.
Claim 8
Dependent Claim
301 words
A package for housing a digital signal translating device of the type employing mobile magnetic domains in uniaxially anisotropic magnetic media capable of sustaining said domains in the presence of a predetermined magnetic biasing field and operative in response to electrical signals applied to said device over electrical conductors while such magnetic bias field is simultaneously applied thereto to move said magnetic domains between predetermined locations in said magnetic media, said package comprising: a. means forming a rigid structural frame member of said package and consisting of a material which is both a high coercivity permanent magnet and an electrical insulator for simultaneously providing said package structural member, a magnetic biasing field, and an electrically insulating terminal strip for said conductors; b. means to support said device within said frame member in fixed relationship thereto; c. said support means including an optically non-distorting transparent portion positioned to permit visual inspection of said signal tranSlating device during manufacturing assembly of said package device to determine by a visual inspection of said signal translating device that the intended mobile domains have, in fact, been created at the desired location; and, d. electrically insulating cover means shaped to close said package, said cover means including a transpatent portion alignable with said transparent portion of said support means to permit visual inspection of said signal translating device, said structural frame member being shaped to entirely surround said signal translating device when said device is placed in said package in at least one plane of said device, said insulating cover means and said support means forming when assembled with said structural frame member a totally closed package in which said signal translating device may be housed, and said insulating cover means coacting with said frame member to provide protective and insulative termination for said electrical conductors.
Claim 9
Dependent Claim
255 words
A package for housing a digital siganl translating device of the type employing mobile magnetic domains in uniaxially anisotropic magnetic media capable of sustaining said domains in the presence of a predetermined magnetic biasing field and operative in response to electrical signals applied to said device over electrical conductors while such magnetic bias field is simultaneously applied thereto to move said magnetic domains between predetermined locations in said magnetic media, said package comprising: a. means forming a rigid structural frame member of said package and consisting of a material which is both a high coercivity permanent magnet and an electrical insulator for simultaneously providing said package structural member, a magnetic biasing field and an electrically insulating terminal strip for said conductors; b. means to support said device within said frame member in fixed relationship thereto; c. said frame member providing means to insulatively support electrical conductors for terminating the circuits of said translating device for connection to external circuitry; d. said structural frame member forming an aperture magnet shaped to entirely surround said signal translating device in at least one plane of said device when said device is placed in said package to provide said biasing field for said device by the central aperture field of said magnet which is directed perpendicularly to said plane, and said member also forming with said support means a package in which said signal translating device may be protectively housed; and, e. cover means to coact with said frame member and said support means to entirely close said package.
Claim 10
Dependent Claim
255 words
A package for housing a digital siganl translating device of the type employing mobile magnetic domains in uniaxially anisotropic magnetic media capable of sustaining said domains in the presence of a predetermined magnetic biasing field and operative in response to electrical signals applied to said device over electrical conductors while such magnetic bias field is simultaneously applied thereto to move said magnetic domains between predetermined locations in said magnetic media, said package comprising: a. means forming a rigid structural frame member of said package and consisting of a material which is both a high coercivity permanent magnet and an electrical insulator for simultaneously providing said package structural member, a magnetic biasing field and an electrically insulating terminal strip for said conductors; b. means to support said device within said frame member in fixed relationship thereto; c. said frame member providing means to insulatively support electrical conductors for terminating the circuits of said translating device for connection to external circuitry; d. said structural frame member forming an aperture magnet shaped to entirely surround said signal translating device in at least one plane of said device when said device is placed in said package to provide said biasing field for said device by the central aperture field of said magnet which is directed perpendicularly to said plane, and said member also forming with said support means a package in which said signal translating device may be protectively housed; and, e. cover means to coact with said frame member and said support means to entirely close said package.
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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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |