US3213433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive circuit for core memory
Assignee: NCR Voyix Corp
•
Filing: 1961-03-29
•
Granted: 1965-10-19
•
Expires: 1981-03-29
Abstract
No abstract record available.
Inventors
- 👤 Loren L Tribby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:09
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A MAGNETIC CORE DRIVER COMPRISING A SOURCE OF POWER, A PLURALITY OF SATURABLE MAGNETIC CORES CAPABLES OF ASSMING BISTABLE STATES OF MAGNETI REMANENCE, A COMMON WINDING COUPLED TO SAID MAGNETIC CORES, AN INDUCTIVE IMPEDANCE AND A ZENER DIODE CONNECTED IN SERIES BETWEEN SAID SOURCE OF POWER AND SAID COMMON WINDING, AND A SWITCHING MEANS CONNECTED BETWEEN SAID INDUCTIVE IMPENDANCE AND SAID ZENER DIODE, SAID SWITCHING MEANS BEING ADAPTED TO SELECTIVELY CONTROL CURRENT FLOW FROM SAID SOURCE OF POWER THROUGH SAID COMMON WINDING OR THROUGH SAID SWITCHING MEANS.
Claim 2
Dependent Claim
87 words
A MAGNETIC CORE DRIVER COMPRISING A SOURCE OF POWER, A PLURALITY OF SATURABLE MAGNETIC CORES CAPABLES OF ASSMING BISTABLE STATES OF MAGNETI REMANENCE, A COMMON WINDING COUPLED TO SAID MAGNETIC CORES, AN INDUCTIVE IMPEDANCE AND A ZENER DIODE CONNECTED IN SERIES BETWEEN SAID SOURCE OF POWER AND SAID COMMON WINDING, AND A SWITCHING MEANS CONNECTED BETWEEN SAID INDUCTIVE IMPENDANCE AND SAID ZENER DIODE, SAID SWITCHING MEANS BEING ADAPTED TO SELECTIVELY CONTROL CURRENT FLOW FROM SAID SOURCE OF POWER THROUGH SAID COMMON WINDING OR THROUGH SAID SWITCHING MEANS.
References Cited (Backward Citations)
US3008128A
Cited
US3021484A
Cited
US2914748A
Cited
US3025409A
Cited
US2993198A
Cited
US2997600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |