Patent US3681768A successfully refreshed from Google Patents.
US3681768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic analog memory device
Assignee: Institute of Electrodynamics
•
Filing: 1969-07-28
•
Granted: 1972-08-01
•
Expires: 1989-07-28
Abstract
Abstract A magnetic analog memory device comprising a core with control windings and a variable induction transducer or sensing means, in which a higher stability is achieved by making up the core of two open parts, each part carrying a control winding and forming a magnetic circuit with two poles, the first poles of the magnetic circuits being combined, the second poles being separated by a gap accommodating the variable induction transducer.
Inventors
- 👤 Vladimir Alexandrovic Zelensky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:31
CPC Classifications
G; G11; G11C; G11C27/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
A magnetic analog memory device comprising a branched core of magnetic material having a high residual magnetization, said core defining a first magnetic circuit means for storing analog information in the form of residual magnetization in said first circuit means and a second magnetic circuit means for measuring said analog information by balancing the residual magnetization values in said circuit means, said first circuit means having a first and a second pole and carrying a control winding means for creating a residual magnetization proportional to the value of an input signal in said first circuit means; said second circuit means having a first and a second pole and carrying a control winding means for creating a residual magnetization in said second circuit means which equals the residual magnetization of said first circuit means; said branched core having a configuration wherein said first poles of each of said circuit means are combined and wherein said second poles of each of said circuit means are separated by a gap; and sensing means disposed in said gap which is sensitive to the magnetic field in said gap and serves to control the balancing of the residual magnetization of said circuits at the moment when said analog information is measured.
Claim 2
Dependent Claim
206 words
A magnetic analog memory device comprising a branched core of magnetic material having a high residual magnetization, said core defining a first magnetic circuit means for storing analog information in the form of residual magnetization in said first circuit means and a second magnetic circuit means for measuring said analog information by balancing the residual magnetization values in said circuit means, said first circuit means having a first and a second pole and carrying a control winding means for creating a residual magnetization proportional to the value of an input signal in said first circuit means; said second circuit means having a first and a second pole and carrying a control winding means for creating a residual magnetization in said second circuit means which equals the residual magnetization of said first circuit means; said branched core having a configuration wherein said first poles of each of said circuit means are combined and wherein said second poles of each of said circuit means are separated by a gap; and sensing means disposed in said gap which is sensitive to the magnetic field in said gap and serves to control the balancing of the residual magnetization of said circuits at the moment when said analog information is measured.
References Cited (Backward Citations)
US2741757A
Cited
US3225145A
Cited
US3287712A
Cited
US3373411A
Cited
US3379895A
Cited
US3533090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |