SE308212B - - Google Patents
Info
- Publication number
- SE308212B SE308212B SE9287/60A SE928760A SE308212B SE 308212 B SE308212 B SE 308212B SE 9287/60 A SE9287/60 A SE 9287/60A SE 928760 A SE928760 A SE 928760A SE 308212 B SE308212 B SE 308212B
- Authority
- SE
- Sweden
Links
Classifications
-
- 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
- H01F1/34—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 non-metallic substances, e.g. ferrites
- H01F1/342—Oxides
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/133—Structure or manufacture of heads, e.g. inductive with cores composed of particles, e.g. with dust cores, with ferrite cores with cores composed of isolated magnetic particles
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
- G11B5/193—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features the pole pieces being ferrite or other magnetic particles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49034—Treating to affect magnetic properties
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Power Engineering (AREA)
- Magnetic Heads (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Soft Magnetic Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL243987 | 1959-10-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE308212B true SE308212B (US20110232667A1-20110929-C00004.png) | 1969-02-03 |
Family
ID=19751967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE9287/60A SE308212B (US20110232667A1-20110929-C00004.png) | 1959-10-02 | 1960-09-29 |
Country Status (6)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL289671A (US20110232667A1-20110929-C00004.png) * | 1963-03-01 | |||
| US4279102A (en) * | 1978-07-24 | 1981-07-21 | Magnetic Peripherals Inc. | Method of manufacturing narrow track ferrite head cores |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2597237A (en) * | 1948-06-25 | 1952-05-20 | Rca Corp | Variable loss paramagnetic cores |
| US2715659A (en) * | 1950-10-14 | 1955-08-16 | Ibuka Masaru | Magnetic heads for magnetic recording and reproducing apparatus |
| US2700073A (en) * | 1951-05-10 | 1955-01-18 | Hartford Nat Bank & Trust Co | Head of equipment for magnetic recording and reproduction |
| US2705392A (en) * | 1952-06-11 | 1955-04-05 | Selectronics Inc | Method of manufacture of piezo electric crystals |
| US2711945A (en) * | 1953-03-04 | 1955-06-28 | Clevite Corp | Magnetic transducer head for high frequency signals |
| US2911481A (en) * | 1954-02-27 | 1959-11-03 | Luxor Industri Ab | Magnetic head comprising a core of ferrite |
| FR1135708A (fr) * | 1955-08-05 | 1957-05-03 | Siemens Ag | Tête d'enregistrement magnétique en ferrite |
| US2920149A (en) * | 1957-11-21 | 1960-01-05 | Sonotone Corp | Magnetic record transducing heads |
| US2912804A (en) * | 1958-06-16 | 1959-11-17 | Luther G Simjian | Method for polishing articles |
-
1960
- 1960-09-28 DE DE1424431A patent/DE1424431C3/de not_active Expired
- 1960-09-29 SE SE9287/60A patent/SE308212B/xx unknown
- 1960-09-29 US US59249A patent/US3177475A/en not_active Expired - Lifetime
- 1960-09-30 GB GB33639/60A patent/GB958680A/en not_active Expired
- 1960-09-30 CH CH1102560A patent/CH398112A/de unknown
- 1960-10-03 FR FR840163A patent/FR1274715A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3177475A (en) | 1965-04-06 |
| DE1424431C3 (de) | 1974-07-11 |
| GB958680A (en) | 1964-05-21 |
| FR1274715A (fr) | 1961-10-27 |
| DE1424431A1 (de) | 1968-10-10 |
| CH398112A (de) | 1965-08-31 |
| DE1424431B2 (de) | 1973-12-13 |
