US3760389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Batch fabricated magnetic wire memory
Assignee: Bunker Ramo Corp
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Filing: 1971-09-24
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Granted: 1973-09-18
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Expires: 1991-09-24
Abstract
Abstract A magnetic wire memory construction and method of making in which the memory comprises a plurality of stacked memory planes having memory wires inserted in aligned holes thereof. Each memory plane is fabricated using precision batch fabricated selective chemical etching techniques on a single self-supporting metal sheet so as to form pairs of insulated drive lines within the sheet looping around respective rows of a row-column matrix of memory wire receiving holes. Additional metal and magnetic layers may be provided over the surfaces of the sheets for increasing shielding and reducing memory cell disturbances.
Inventors
- 👤 A Scarbrough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:22
CPC Classifications
G; G11; G11C; G11C5/00; G11C5/02; G11C5/04; G11C11/00; G11C11/02; G11C11/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
139 words
A memory plane construction comprising: a conductive planar body having a plurality of memory element receiving holes at predetermined spaced locations thereof, said planar body also having a plurality of recesses following paths corresponding to the paths desired for the drive lines of said memory plane and located so as to form loops about respective groups of said memory element receiving holes, a plurality of conductive strips disposed in respective ones of said recesses and recessed from both surfaces of said planar body so as to be wholly contained therein, said conductive strips constituting the drive lines of said memory plane, said recesses being shaped so as to completely isolate their respective conductive strips from said planar body, and dielectric material in said recesses supporting said drive lines therein and electrically insulating said drive lines from said planar body.
Claim 2
Dependent Claim
139 words
A memory plane construction comprising: a conductive planar body having a plurality of memory element receiving holes at predetermined spaced locations thereof, said planar body also having a plurality of recesses following paths corresponding to the paths desired for the drive lines of said memory plane and located so as to form loops about respective groups of said memory element receiving holes, a plurality of conductive strips disposed in respective ones of said recesses and recessed from both surfaces of said planar body so as to be wholly contained therein, said conductive strips constituting the drive lines of said memory plane, said recesses being shaped so as to completely isolate their respective conductive strips from said planar body, and dielectric material in said recesses supporting said drive lines therein and electrically insulating said drive lines from said planar body.
Claim 3
Dependent Claim
69 words
The invention in accordance with claim 1, wherein said conductive body is self-supporting, wherein said recesses extend to both surfaces of said planar body, wherein said receiving holes are arranged in rows, wherein said recesses encircle and interconnect the holes in respective rows, and wherein a pair of drive lines is provided in the recesses of each row so that drive lines pass each hole on opposite sides thereof.
Claim 4
Dependent Claim
42 words
The invention in accordance with claim 2, wherein a plurality of planar bodies having the same construction as said conductive planar body are stacked with their receiving holes aligned, and wherein memory wires are inserted in respective ones of the aligned holes.
Claim 5
Dependent Claim
27 words
The invention in accordance with claim 1, wherein a conductive layer is provided adjacent and in electrical contact with at least one surface of said planar body.
Claim 6
Dependent Claim
22 words
The invention in accordance with claim 1, wherein a magnetic layer is provided adjacent at least one surface of said planar body.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |