GB691659A - Improvements in or relating to wire-shaped objects comprising a core and a sheath with magnetic powder in between - Google Patents
Improvements in or relating to wire-shaped objects comprising a core and a sheath with magnetic powder in betweenInfo
- Publication number
- GB691659A GB691659A GB22670/51A GB2267051A GB691659A GB 691659 A GB691659 A GB 691659A GB 22670/51 A GB22670/51 A GB 22670/51A GB 2267051 A GB2267051 A GB 2267051A GB 691659 A GB691659 A GB 691659A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wire
- sheath
- nickel
- core
- powder
- 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
Links
- 239000006247 magnetic powder Substances 0.000 title abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 4
- 239000004411 aluminium Substances 0.000 abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 2
- 229910052782 aluminium Inorganic materials 0.000 abstract 2
- 230000005291 magnetic effect Effects 0.000 abstract 2
- 229910052759 nickel Inorganic materials 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 229910000640 Fe alloy Inorganic materials 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 229910000990 Ni alloy Inorganic materials 0.000 abstract 1
- 239000010941 cobalt Substances 0.000 abstract 1
- 229910017052 cobalt Inorganic materials 0.000 abstract 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 230000005294 ferromagnetic effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
Landscapes
- Hard Magnetic Materials (AREA)
- Paints Or Removers (AREA)
Abstract
691,659. Magnetic dust structures. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 28, 1951 [Oct. 3, 1950], No. 22670/51. Class 38 (ii). A magnetic recording wire comprises a core 1 and sheath 2 of aluminium or similar material with an intervening space filled with a permanently magnetizable, ferromagnetic powder 3, e.g. iron powder. The wire may be drawn down to an outer diameter of 0.1 mm. Copper, nickel or molybdemun may replace the aluminium provided that any heat treatment is at sufficiently low temperature to avoid sintering the magnetic powder. The latter may have a particle size less than 2 Á, e.g. 0.03 to 0.05 Á, and a coercive force greater than 300 Oersted, e.g. 1100 Oersted. Iron alloy, nickel alloy, nickel and cobalt powders are mentioned.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL691659X | 1950-10-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB691659A true GB691659A (en) | 1953-05-20 |
Family
ID=19808302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22670/51A Expired GB691659A (en) | 1950-10-03 | 1951-09-28 | Improvements in or relating to wire-shaped objects comprising a core and a sheath with magnetic powder in between |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB691659A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4506251A (en) * | 1981-05-19 | 1985-03-19 | Matsushita Electric Industrial Co., Ltd. | Sheathed resistance heater |
| US5206642A (en) * | 1990-05-11 | 1993-04-27 | U.S. Philips Corporation | Device for detecting data relating to the passage of vehicles on a road |
-
1951
- 1951-09-28 GB GB22670/51A patent/GB691659A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4506251A (en) * | 1981-05-19 | 1985-03-19 | Matsushita Electric Industrial Co., Ltd. | Sheathed resistance heater |
| US5206642A (en) * | 1990-05-11 | 1993-04-27 | U.S. Philips Corporation | Device for detecting data relating to the passage of vehicles on a road |
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