US3271665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film field sensor
Assignee: Lockheed Martin Corp
•
Filing: 1963-11-20
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Granted: 1966-09-06
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Expires: 1983-11-20
Abstract
No abstract record available.
Inventors
- 👤 Peter S Castro
- 👤 Frank F Stucki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:53
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02; G01R33/04; G01R33/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
AN IMPROVED FLUX SENSING DEVICE FOR MEASURING THE MAGNITUDE OF EXTERNAL MAGNETIC FIELDS COMPRISING: AN INSULATIVE SUPPORT MEMBER; A THIN BISTABLE MAGNETIC FILM DEPOSITED ON SAID SUPPORT MEMBER, SAID FILM HAVING EASY AND HARD AXES OPF MAGNETIZATION PERPENDICULAR TO ONE ANOTHER AND HAVING SQUARE HYSTERESIS LOOP CHARACTERISTICS ALONG THE EASY AXIS; MEANS INCLUDING A FIRST COIL WOUND ABOUT SAID FILM AND SAID SUPPORT MEMBER FOR SWITCHING THE MAGNETIC VECTOR OF SAID THIN MAGNETIC FILM ABOUT SAID EASY AXIS; AND MEANS INCLUDING A SECOND COIL FOR DETECTING AND RECORDING THE MAGNITUDE OF AN EXTERNAL MAGNETIC FIELD DIRECTED ALONG THE AXIS OF SAID SECOND COIL AND THE HARD AXIS OF SAID THIN MAGNETIC FILM.
Claim 2
Dependent Claim
112 words
AN IMPROVED FLUX SENSING DEVICE FOR MEASURING THE MAGNITUDE OF EXTERNAL MAGNETIC FIELDS COMPRISING: AN INSULATIVE SUPPORT MEMBER; A THIN BISTABLE MAGNETIC FILM DEPOSITED ON SAID SUPPORT MEMBER, SAID FILM HAVING EASY AND HARD AXES OPF MAGNETIZATION PERPENDICULAR TO ONE ANOTHER AND HAVING SQUARE HYSTERESIS LOOP CHARACTERISTICS ALONG THE EASY AXIS; MEANS INCLUDING A FIRST COIL WOUND ABOUT SAID FILM AND SAID SUPPORT MEMBER FOR SWITCHING THE MAGNETIC VECTOR OF SAID THIN MAGNETIC FILM ABOUT SAID EASY AXIS; AND MEANS INCLUDING A SECOND COIL FOR DETECTING AND RECORDING THE MAGNITUDE OF AN EXTERNAL MAGNETIC FIELD DIRECTED ALONG THE AXIS OF SAID SECOND COIL AND THE HARD AXIS OF SAID THIN MAGNETIC FILM.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |