US3092812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-destructive sensing of thin film magnetic cores
Assignee: Unisys Corp
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Filing: 1957-05-10
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Granted: 1963-06-04
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Expires: 1977-05-10
Abstract
No abstract record available.
Inventors
- 👤 Thomas D Rossing
- 👤 Arthur V Pohm
- 👤 Sidney M Rubens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:04
CPC Classifications
G; G11; G11C; G11C7/00; G11C7/06; G11C11/00; G11C11/02; G11C11/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
MAGNETIC CORE NON-DESTRUCTIVE SENSING APPARATUS COMPRISING A FILM OF RECTANGULAR HYSTERESIS LOOP TYPE MAGNETIC MATERIAL EXHIBITING SINGLE DOMAIN PROPERTIES AND HAVING REMANENT MAGNETIZATION ALONG A SINGLE EASY MAGNETIZATION AXIS LYING IN THE PLANE OF THE FILM, A CONDUCTOR IN INDUCTIVE RELATIONSHIP WITH SAID FILM FOR CARRYING INTERROGATING CURRENT TO CAUSE FLUX TO BE INDUCED IN SAID FILM IN A DIRECTION TRANSVERSE TO SAID AXIS, AND MEANS FOR SENSING A CHANGE IN SAID REMANENT MAGNETIZATION DUE TO SAID FLUX, THE ARRANGEMENT BEING SUCH THAT SAID INTERROGATING CURRENT WHEN APPLIED AT LEAST TEMPORARILY CHANGES THE AMOUNT OF REMANENT MAGNETIZATION ALONG SAID AXIS TO PROVIDE AN INDICATION OF THE EXISTENCE OF SAID REMANENT MAGNETIZATION WITHOUT DESTRUCTION OR REVERSAL THEREOF.
Claim 2
Dependent Claim
116 words
MAGNETIC CORE NON-DESTRUCTIVE SENSING APPARATUS COMPRISING A FILM OF RECTANGULAR HYSTERESIS LOOP TYPE MAGNETIC MATERIAL EXHIBITING SINGLE DOMAIN PROPERTIES AND HAVING REMANENT MAGNETIZATION ALONG A SINGLE EASY MAGNETIZATION AXIS LYING IN THE PLANE OF THE FILM, A CONDUCTOR IN INDUCTIVE RELATIONSHIP WITH SAID FILM FOR CARRYING INTERROGATING CURRENT TO CAUSE FLUX TO BE INDUCED IN SAID FILM IN A DIRECTION TRANSVERSE TO SAID AXIS, AND MEANS FOR SENSING A CHANGE IN SAID REMANENT MAGNETIZATION DUE TO SAID FLUX, THE ARRANGEMENT BEING SUCH THAT SAID INTERROGATING CURRENT WHEN APPLIED AT LEAST TEMPORARILY CHANGES THE AMOUNT OF REMANENT MAGNETIZATION ALONG SAID AXIS TO PROVIDE AN INDICATION OF THE EXISTENCE OF SAID REMANENT MAGNETIZATION WITHOUT DESTRUCTION OR REVERSAL THEREOF.
References Cited (Backward Citations)
US2911627A
Cited
US2919432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |