Patent EP0459292A2 successfully refreshed from Google Patents.
Patent US3669866A successfully refreshed from Google Patents.
US3669866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for obtaining wires for magnetic memories
Assignee: Bull SAS
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Filing: 1970-04-01
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Granted: 1972-06-13
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Expires: 1990-04-01
Abstract
Abstract An apparatus for the continuous fabrication and testing of a wire having a conductive core covered with a thin magnetic film, wherein the conductive core is pulled with substantially zero tension through apparatus in which a magnetic film is deposited on the core and treated, and wherein the completed wire is then pushed through apparatus in which its physical properties are measured.
Inventors
- 👤 Rene Fernand Victor Girard
- 👤 Jacques Le Guillerm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:29
CPC Classifications
H; H01; H01F; H01F10/00; H01F10/06; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/143; Y; Y10; Y10S; Y10S205/00; Y10S205/922
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
190 words
An arrangement provided with fabrication apparatus for the continuous fabrication of a wire having a conductive core covered with a thin magnetic film starting with a core which is wound on a drum and which traverses, under the action of driving means, said fabrication apparatus, wherein said fabrication apparatus comprises, successively, means for preparation of the core, means for electrolyticly depositing the magnetic film on said core, and means for the treatment of a magnetic film on said core, said arrangement being provided further with a device for measuring the magnetic properties of the completed wire, wherein the improvement comprises: said driving means comprising a first means having a motor driving said drum in a sense to unwind said core, a device for sensing the sag of said core in the portion thereof between said drum and said fabrication apparatus, and means controlled by said sensing device for regulating the speed of said motor to a value greater or less in accordance with the tendency of the sag to decrease or to increase, and a second means having a driving device disposed between said fabrication apparatus and said measuring device.
Claim 2
Dependent Claim
190 words
An arrangement provided with fabrication apparatus for the continuous fabrication of a wire having a conductive core covered with a thin magnetic film starting with a core which is wound on a drum and which traverses, under the action of driving means, said fabrication apparatus, wherein said fabrication apparatus comprises, successively, means for preparation of the core, means for electrolyticly depositing the magnetic film on said core, and means for the treatment of a magnetic film on said core, said arrangement being provided further with a device for measuring the magnetic properties of the completed wire, wherein the improvement comprises: said driving means comprising a first means having a motor driving said drum in a sense to unwind said core, a device for sensing the sag of said core in the portion thereof between said drum and said fabrication apparatus, and means controlled by said sensing device for regulating the speed of said motor to a value greater or less in accordance with the tendency of the sag to decrease or to increase, and a second means having a driving device disposed between said fabrication apparatus and said measuring device.
Claim 3
Dependent Claim
21 words
ThE arrangement of claim 1, wherein said driving device comprises rollers between which passes the wire emerging from the fabrication apparatus.
Claim 4
Dependent Claim
34 words
The arrangement of claim 1, wherein there is further provided, following the device for measuring the magnetic properties of the completed wire, a device for cutting the completed wire controlled by said measuring device.
Claim 5
Dependent Claim
104 words
Apparatus for continuously fabricating a wire having a core with a layer thereon, said core being initially provided as a roll, comprising: a deposition device for continuously electrolyticly depositing said layer on said core as said core passes therethrough, first driving means for unwinding said core from said roll and inserting it into one end of said deposition device, wherein said first driving means maintains a sag in said core between said roll and said deposition device, said sag being maintained between predetermined maximum limits, and second driving means for pulling the coated core emerging from said deposition device with a very low tension.
Claim 6
Dependent Claim
104 words
Apparatus for continuously fabricating a wire having a core with a layer thereon, said core being initially provided as a roll, comprising: a deposition device for continuously electrolyticly depositing said layer on said core as said core passes therethrough, first driving means for unwinding said core from said roll and inserting it into one end of said deposition device, wherein said first driving means maintains a sag in said core between said roll and said deposition device, said sag being maintained between predetermined maximum limits, and second driving means for pulling the coated core emerging from said deposition device with a very low tension.
Claim 7
Dependent Claim
37 words
The apparatus of claim 4, further including a testing device for testing the condition of said layer on the core of said completed wire, wherein the second driving means pushes the completed core through a testing device.
Claim 8
Dependent Claim
37 words
The apparatus of claim 4 wherein said first driving means unwinds said core from said roll with a speed for maintaining substantially zero tension in said core at a point between said roll and said deposition device.
Claim 9
Dependent Claim
86 words
Apparatus for continuously fabricating a wire having a conductive core covered with a thin magnetic layer, comprising, in combination: deposition means for receiving said core and for electrolyticly depositing said layer on said core as said core moves therethrough, supply means disposed at one end of said deposition means for supplying said core to said deposition means with substantially zero tension in said core, and driving means disposed at the other end of said deposition means for pulling the coated core emerging from said deposition means.
Claim 10
Dependent Claim
86 words
Apparatus for continuously fabricating a wire having a conductive core covered with a thin magnetic layer, comprising, in combination: deposition means for receiving said core and for electrolyticly depositing said layer on said core as said core moves therethrough, supply means disposed at one end of said deposition means for supplying said core to said deposition means with substantially zero tension in said core, and driving means disposed at the other end of said deposition means for pulling the coated core emerging from said deposition means.
Claim 11
Dependent Claim
37 words
The apparatus of claim 7 wherein the tension exerted by said driving means to pull said coated core is substantially that required for overcoming the residual friction imposed on said core in passing through said deposition means.
Claim 12
Dependent Claim
38 words
The apparatus of claim 7 further including a testing device for testing the condition of the layer on said core, and wherein said driving means pushes the coated core pulled from said deposition means through said testing device.
Claim 13
Dependent Claim
25 words
The apparatus of claim 7 wherein said supply means comprises a servomechanism for maintaining substantially zero tension in the core supplied to said deposition means.
Claim 14
Dependent Claim
18 words
The apparatus of claim 10 wherein said servomechanism maintains a sag in said core between predetermined dimensional bounds.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |