US3228012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic device
Assignee: NCR Voyix Corp
•
Filing: 1959-02-27
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Granted: 1966-01-04
•
Expires: 1979-02-27
Abstract
No abstract record available.
Inventors
- 👤 Donal A Meier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:42
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/80; H03K17/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A BISTABLE MAGNETIC DEVICE COMPRISING: A 5 TO 30 MIL ROD-LIE BASE STRUCTURE OF NON-MAGNETIC MATERIAL, A CYLINDRICAL THIN FILM OF SATURABLE FERROMAGNETIC MATERIAL HAVING A SUBSTANTIALLY RECTANGULAR HYSTERESIS CHARACTERISTIC DEPOSITED ON SAID BASE STRUCTURE WITH A THICKNESS OF THE ORDER OF 500 TO 4,00 ANGSTROMS, AND MEANS INCLUDING A PLURALITY OF SOLENOIDS COUPLED TO SAID THIN FILM FOR SETTING THE FILM DURING A WRITING OPERATION TO MAGNETIC SATURATION IN ONE OR THE OTHER OF THE TWO AXIAL DIRECTIONS SUBSTANTIALLY PARALLEL TO SAID BASE STRUCTURE AND DURING A READING OPERATION FOR SENSING IN WHICH AXIAL DIRECTION THE THIN FILM IS SATURATED BY APPLYING A SUBSTANTIALLY AXIAL MAGNETIC SWITCHING FIELD THERETO IN A PREDETERMINED ONE OF SAID AXIAL DIRECTIONS, ONE OF SAID PLURALITY OF SOLENOIDS SERVING AS A SENSE WINDING DURING SAID READING OPERATION TO SENSE THE PARTICULAR AXIAL DIRECTION IN WHICH SAID FILM IS SATURATED.
Claim 2
Dependent Claim
145 words
A BISTABLE MAGNETIC DEVICE COMPRISING: A 5 TO 30 MIL ROD-LIE BASE STRUCTURE OF NON-MAGNETIC MATERIAL, A CYLINDRICAL THIN FILM OF SATURABLE FERROMAGNETIC MATERIAL HAVING A SUBSTANTIALLY RECTANGULAR HYSTERESIS CHARACTERISTIC DEPOSITED ON SAID BASE STRUCTURE WITH A THICKNESS OF THE ORDER OF 500 TO 4,00 ANGSTROMS, AND MEANS INCLUDING A PLURALITY OF SOLENOIDS COUPLED TO SAID THIN FILM FOR SETTING THE FILM DURING A WRITING OPERATION TO MAGNETIC SATURATION IN ONE OR THE OTHER OF THE TWO AXIAL DIRECTIONS SUBSTANTIALLY PARALLEL TO SAID BASE STRUCTURE AND DURING A READING OPERATION FOR SENSING IN WHICH AXIAL DIRECTION THE THIN FILM IS SATURATED BY APPLYING A SUBSTANTIALLY AXIAL MAGNETIC SWITCHING FIELD THERETO IN A PREDETERMINED ONE OF SAID AXIAL DIRECTIONS, ONE OF SAID PLURALITY OF SOLENOIDS SERVING AS A SENSE WINDING DURING SAID READING OPERATION TO SENSE THE PARTICULAR AXIAL DIRECTION IN WHICH SAID FILM IS SATURATED.
References Cited (Backward Citations)
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Cited
US2811652A
Cited
US2878463A
Cited
US2997695A
Cited
US3083353A
Cited
US3069661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |