Patent US3138786A successfully refreshed from Google Patents.
US3138786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic core matrix
Assignee: International Business Machines Corp
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Filing: 1960-07-18
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Granted: 1964-06-23
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Expires: 1980-07-18
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Smura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:10
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/06007; G11C11/06014; H; H03; H03K; H03K17/00; H03K17/51; H03K17/80; H03K17/88
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
412 words
A MATRIX COMPRISING A PLURALITY OF BINARY ELEMENTS EACH HAVING TWO STABLE STATES; FIRST AND SECOND GROUPS OF CURRENT CARRYING DRIVE LINES, EACH ELEMENT BEING ENERGIZABLE BY ONE OF THE DRIVE LINES IN EACH GROUP; EACH DRIVE LINE IN SAID FIRST GROUPS HAVING ONE TERMINAL CONNECTED TO A FIRST COMMON JUNCTION, EACH LINE IN SAID SECOND GROUP HAVING ONE TERMINAL CONNECTED TO A SECOND COMMON JUNCTION; A PLURALITY OF CURRENT COUPLING MEANS EACH COMPRISING A TRANSFORMER HAVING A FIRST CORE WITH NO DEFINED STABLE STATE, A SECOND CORE HAVING TWO STABLE STATES, A PRIMARY WINDING, A SECONDARY WINDING, A TERTIARY WINDING, SAID PRIMARY AND SECONDARY WINDINGS BEING WOUND ON BOTH OF SAID CORES, SAID TERTIARY WINDING BEING WOUND ONLY ON SAID SECOND CORE, AND A LINE MATCHING IMPEDANCE BEING CONNECTED ACROSS SAID TERTIARY WINDING; ONE TERMINAL OF EACH SAID SECONDARY WINDING BEING CONNECTED TO GROUND AND THE OTHER TERMINAL BEING CONNECTED TO THE OTHER TERMINAL OF A RESPECTIVE DRIVE LINE; FIRST AND SECOND GROUPS OF SOURCES OF CURRENT EACH INDIVIDUALLY CONTROLLABLE TO PROVIDE OR NOT PROVIDE CURRENT; EACH SOURCE CONNECTED FOR PROVIDING CURRENT TO THE PRIMARY WINDING OF A RESPECTIVE TRANSFORMER; CURRENT FLOW IN A PRIMARY WINDING SOURCE CAUSING A CURRENT TO BE INDUCED IN THE ASSOCIATED SECONDARY WINDING AND CONSEQUENT CURRENT FLOW IN THE ASSOCIATED DRIVE LINE; THE MAGNITUDE OF THE CURRENT PROVIDED BY EACH SOURCE TO THE RESPECTIVE PRIMARY WINDING BEING INSUFFICIENT TO SHIFT THE STATE OF THE RESPECTIVE SECOND CORE; WHEREBY NO CURRENT ENERGY IS COUPLED TO THE RESPECTIVE TERTIARY WINDING; FOR SELECTING A PARTICULAR ELEMENT IN SAID MATRIX ALL SAID SOURCES EXCEPT THOSE SOURCES COUPLING CURRENT ENERGY TO THE SELECTED ELEMENT BEING ACTIVATED TO PROVIDE CURRENT ENERGY TO THE RESPECTIVE DRIVE LINES; THE CURRENTS FLOWING IN EACH LINE OF SAID FIRST GROUP OF DRIVE LINES BEING COMBINED AT SAID FIRST JUNCTION AND FLOWING THROUGH THE DRIVE LINE IN SAID FIRST GROUP WHICH ENERGIZES SAID SELECTED ELEMENT; THE CURRENTS FLOWING IN EACH LINE OF SAID SECOND GROUP OF DRIVE LINES BEING COMBINED AT SAID SECOND JUNCTION AND FLOWING THROUGH THE DRIVE LINE IN SAID SECOND GROUP WHICH ENERGIZES SAID SELECTED ELEMENT; THE TOTAL OF SAID COMBINED CURRENTS ENERGIZING SAID ELEMENT TO SHIFT ITS STABLE STATE; AND EACH OF SAID COMBINED CURRENTS BEING OF SUFFICIENT MAGNITUDE TO SHIFT THE STABLE STATE OF THE SECOND CORE IN THE RESPECTIVE TRANSFORMER WHEREBY CURRENT ENERGY IS COUPLED TO THE TERTIARY WINDING TO FLOW THROUGH AND BE DISSIPATED IN THE ASSOCIATED LINE MATCHING IMPEDANCE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |