GB876454A - Magnetizable devices - Google Patents

Magnetizable devices

Info

Publication number
GB876454A
GB876454A GB237960A GB237960A GB876454A GB 876454 A GB876454 A GB 876454A GB 237960 A GB237960 A GB 237960A GB 237960 A GB237960 A GB 237960A GB 876454 A GB876454 A GB 876454A
Authority
GB
United Kingdom
Prior art keywords
grooves
magnetic
substrate
magnetic storage
coating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB237960A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NCR Voyix Corp
National Cash Register Co
Original Assignee
NCR Corp
National Cash Register Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NCR Corp, National Cash Register Co filed Critical NCR Corp
Publication of GB876454A publication Critical patent/GB876454A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00—Thin magnetic films, e.g. of one-domain structure
    • H01F10/26—Thin magnetic films, e.g. of one-domain structure characterised by the substrate or intermediate layers
    • H01F10/28—Thin magnetic films, e.g. of one-domain structure characterised by the substrate or intermediate layers characterised by the composition of the substrate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

876,454. Magnetic storage devices; magnetic structures. NATIONAL CASH REGISTER CO. Jan. 22, 1960 [Feb. 6, 1959], No. 2379/60. Class 38 (2). [Also in Group XXXVI] A magnetic storage device comprises a conductive non-magnetic substrate 20 (Fig. 10), which may be of planar, cylindrical, tubular, ribbon-shaped or toroidal form, provided with a number of longitudinal grooves 21 so dimensioned and spaced that a square loop ferromagnetic coating 22 on the substrate has its easy direction of magnetization in the direction of the grooves. Where the grooves are arranged helically (Fig. 9), the easy direction is also helical and the device operates in the same way as a "twistor." The subtrate may consist of a conductive coating deposited on a glass, plastic or ceramic base. The ferromagnetic film 22 may be covered by a protective coating of copper 23. Details of the plating process and equipment are given.
GB237960A 1959-02-06 1960-01-22 Magnetizable devices Expired GB876454A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79169559A 1959-02-06 1959-02-06

Publications (1)

Publication Number Publication Date
GB876454A true GB876454A (en) 1961-08-30

Family

ID=25154510

Family Applications (1)

Application Number Title Priority Date Filing Date
GB237960A Expired GB876454A (en) 1959-02-06 1960-01-22 Magnetizable devices

Country Status (7)

Country Link
BE (1) BE587178A (en)
CH (1) CH362771A (en)
DE (1) DE1245422B (en)
FR (1) FR1246648A (en)
GB (1) GB876454A (en)
NL (1) NL248127A (en)
SE (1) SE301188B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222657A (en) * 1960-09-14 1965-12-07 Sprague Electric Co Magnetic device
US3508216A (en) * 1965-10-29 1970-04-21 Fujitsu Ltd Magnetic memory element having a film of nonmagnetic electrically conductive material thereabout

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL113993C (en) * 1957-08-01
BE573063A (en) * 1957-11-18

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222657A (en) * 1960-09-14 1965-12-07 Sprague Electric Co Magnetic device
US3508216A (en) * 1965-10-29 1970-04-21 Fujitsu Ltd Magnetic memory element having a film of nonmagnetic electrically conductive material thereabout

Also Published As

Publication number Publication date
BE587178A (en) 1960-05-30
SE301188B (en) 1968-05-27
DE1245422B (en) 1967-07-27
NL248127A (en)
FR1246648A (en) 1960-11-18
CH362771A (en) 1962-06-30

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