IT559740A - - Google Patents
Info
- Publication number
- IT559740A IT559740A IT559740DA IT559740A IT 559740 A IT559740 A IT 559740A IT 559740D A IT559740D A IT 559740DA IT 559740 A IT559740 A IT 559740A
- Authority
- IT
- Italy
Links
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
- G11B5/127—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
- G11B5/23—Gap features
- G11B5/235—Selection of material for gap filler
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
- C04B37/003—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts
- C04B37/005—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts consisting of glass or ceramic material
-
- 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
- G11B5/187—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
- G11B5/23—Gap features
- G11B5/232—Manufacture of gap
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
- C04B2237/10—Glass interlayers, e.g. frit or flux
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/34—Oxidic
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/52—Pre-treatment of the joining surfaces, e.g. cleaning, machining
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/76—Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/78—Side-way connecting, e.g. connecting two plates through their sides
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- 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
- Y10T29/49055—Fabricating head structure or component thereof with bond/laminating preformed parts, at least two magnetic
- Y10T29/49057—Using glass bonding material
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Magnetic Heads (AREA)
- Glass Compositions (AREA)
- Paints Or Removers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL200955 | 1955-10-04 | ||
NL292510 | 1963-05-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT559740A true IT559740A (it) |
Family
ID=26641596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT559740D IT559740A (it) | 1955-10-04 |
Country Status (9)
Country | Link |
---|---|
US (1) | US3452430A (it) |
BE (2) | BE647690A (it) |
CA (1) | CA668787A (it) |
CH (1) | CH342762A (it) |
DE (2) | DE1094477B (it) |
FR (1) | FR1171294A (it) |
GB (2) | GB796306A (it) |
IT (1) | IT559740A (it) |
NL (3) | NL292510A (it) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL99145C (it) * | 1958-06-03 | |||
DE1198858B (de) * | 1958-07-03 | 1965-08-19 | Philips Nv | Verfahren zur Herstellung von Magnettonkoepfen |
US3046228A (en) * | 1959-06-08 | 1962-07-24 | Allen Bradley Co | Method of preparing a zinc manganese ferrite |
US3187411A (en) * | 1960-09-27 | 1965-06-08 | Philips Corp | Method of manufacturing pole-piece units for magnetic heads |
GB1320971A (en) * | 1970-06-16 | 1973-06-20 | Int Computers Ltd | Method of bonding ferrite components |
US4182643A (en) * | 1977-07-05 | 1980-01-08 | Control Data Corporation | Method of forming gaps in magnetic heads |
JPS55125519A (en) * | 1979-03-23 | 1980-09-27 | Hitachi Ltd | Magnetic head |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2070272A (en) * | 1934-08-08 | 1937-02-09 | Battelle Memorial Institute | Enameled product and method of making the same |
US2422628A (en) * | 1943-06-12 | 1947-06-17 | Sylvania Electric Prod | Glass to metal seal |
US2532640A (en) * | 1946-08-24 | 1950-12-05 | Gen Motors Corp | Process of enameling |
US2759252A (en) * | 1951-09-26 | 1956-08-21 | Hartford Nat Bank & Trust Co | Method for sealing an iron member to a glass part |
US2711945A (en) * | 1953-03-04 | 1955-06-28 | Clevite Corp | Magnetic transducer head for high frequency signals |
US2719796A (en) * | 1954-03-24 | 1955-10-04 | Aluminum Co Of America | Process for enameling aluminum |
US3024318A (en) * | 1955-10-04 | 1962-03-06 | Philips Corp | Glass gap spacer for magnetic heads |
US3029559A (en) * | 1956-07-25 | 1962-04-17 | Bell Telephone Labor Inc | Glass-metal seals |
US2862842A (en) * | 1958-05-09 | 1958-12-02 | Inland Steel Co | Pretreatment of iron or steel base for single coat vitreous enameling |
NL288321A (it) * | 1962-05-08 |
-
0
- NL NL98664D patent/NL98664C/xx active
- NL NL112258D patent/NL112258C/xx active
- IT IT559740D patent/IT559740A/it unknown
- CA CA668787A patent/CA668787A/en not_active Expired
- NL NL292510D patent/NL292510A/xx unknown
- BE BE551460D patent/BE551460A/xx unknown
-
1956
- 1956-10-01 GB GB29850/56A patent/GB796306A/en not_active Expired
- 1956-10-01 DE DEN12801A patent/DE1094477B/de active Pending
- 1956-10-01 CH CH342762D patent/CH342762A/de unknown
- 1956-10-02 FR FR1171294D patent/FR1171294A/fr not_active Expired
-
1964
- 1964-05-05 DE DEN24923A patent/DE1193548B/de active Pending
- 1964-05-05 GB GB18621/64A patent/GB1016937A/en not_active Expired
- 1964-05-07 US US365830A patent/US3452430A/en not_active Expired - Lifetime
- 1964-05-08 BE BE647690A patent/BE647690A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
NL112258C (it) | |
NL292510A (it) | |
US3452430A (en) | 1969-07-01 |
GB1016937A (en) | 1966-01-12 |
CA668787A (en) | 1963-08-20 |
NL98664C (it) | |
FR1171294A (fr) | 1959-01-23 |
BE551460A (it) | |
BE647690A (it) | 1964-11-09 |
DE1094477B (de) | 1960-12-08 |
DE1193548B (de) | 1965-05-26 |
CH342762A (de) | 1959-11-30 |
GB796306A (en) | 1958-06-11 |