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公开(公告)号：US3738818A
公开(公告)日：1973-06-12
申请号：US3738818D
申请日：1971-06-03
申请人： CONTROL DATA CORP
CPC分类号： G11B5/7325 , G11B5/656 , H01F10/06 , Y10S428/90 , Y10S428/926 , Y10S428/928 , Y10S428/936 , Y10T428/12243 , Y10T428/12736 , Y10T428/12792 , Y10T428/12861 , Y10T428/12889 , Y10T428/12986
摘要： A MAAGNETIC RECORDING MEDIUM AND A METHOD OF PRODUCING IT WHICH PERMITS THE PRODUCTION OF A MAGNETIC RECORDING MEDIUM HAVING A HIGH INTRINSIC COERCIVITY GREATER THAN 300 OERSTEDS AND AN 0.95 SQUARE B-H HYSTERESIS LOOP PERMITTING HIGH SWITCHING SPEEDS AND HIGH DENSITY RECORDING. THE MAGNETIC RECORDING MEDIUM COMPRISES AN ALUMINUM ALLOY DISC SUBSTRATE COVERED BY XINC AND NICKEL LAYERS, OVERLAID BY A GOLD FILM AND THIN-FILM COBALT MAGNETIC LAYER. THE FABRICATION PROCESS INVOLVES ELECTROLESS DEPOSITION OF THIN-FILM LAYERS OF ZINC AND NICKEL ON THE SUBSTRATE, THEN THE DEPOSITION OF A ONE-HALF MICRO-INCH GOLD LAYER CONVERTED BY A COBBALT PHOSPHORUS THIN-FILM LAYER. THE METHOD PROVIDES FOR TAILORING OF THE VALUE OF COERCIVITY INDEPENDENT OF THE THICKNESS OF THE MAGNNETIC FILM LAYER.
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公开(公告)号：US3695854A
公开(公告)日：1972-10-03
申请号：US3695854D
申请日：1970-06-08
申请人： VIKTOR EGGER , ARNULF LILL , WERNER METZDORF , SIEMENS AG
发明人： EGGER VIKTOR , LILL ARNULF , METZDORF WERNER , AG SIEMENS
CPC分类号： H01F41/26 , C25D7/0614 , H01F41/32 , Y10S205/922 , Y10S264/58 , Y10S428/928 , Y10S428/935 , Y10T428/12472 , Y10T428/12639 , Y10T428/12889 , Y10T428/1291 , Y10T428/12993
摘要： METHOD OF PRODUCING A MAGNETIC STORAGE LAYER HAVING UNIAXIAL ANISOTROPY WHICH INVOLVES DEPOSITING A FINE GRAINED SMOOTH SURFACED NON-MAGNETIC METAL ONTO A CARRIER WIRE, APPLYING A SECOND NON-MAGNETIC LAYER HAVING
A ROUGHENED SURFACE OVER THE FIRST LAYER, AND THEN APPLYING A FERRO-MAGNETIC LAYER OVER THE ROUGHENED SURFACE.-
公开(公告)号：US3681225A
公开(公告)日：1972-08-01
申请号：US3681225D
申请日：1970-11-23
发明人： GENMA SUSUMU , KURODA AKIO , KATO TOSHIO , KISHI FUSAO
CPC分类号： H01F10/06 , G11B5/8404 , Y10S205/917 , Y10S205/922 , Y10S428/928 , Y10S428/935 , Y10T428/12944 , Y10T428/12993
摘要： A METHOD OF MAKING MAGNETIC DISC WHEREIN AN ELECTRICALLY CONDUCTING MATERIAL LAYER IS FORMED ON THE SUFACES OF A BASE PLATE MADE BY SHAPING A SYNTHETIC RESINOUS MATERIAL, THEN A MAGNETIC MATERIAL IS APPLIED TO THE COAT BY ELECTRODEPOSITION AND FINALLY THE SURFACES ARE POLISHED BY A POLISHING MATERIAL OF VERY SMALL GRAIN SIZE. THE LAYER OF MAGNETIC MATERIAL FORMED BY ELECTRODEPOSITION HAS ITS SURFACES RENDERED SMOOTH BY THE POLISHING OPERATION BECAUSE MINUTE FISSURES IN THE SURFACES ARE REMOVED AND AT THE SAME TIME THE MAGNETIC MATERIAL LAYER ITSELF IS ANNEALED BY THE HEAT OF FRICTION.
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公开(公告)号：US3575366A
公开(公告)日：1971-04-20
申请号：US3575366D
申请日：1967-11-06
申请人： BELL & HOWELL CO
发明人： BLUM JAMES E , JOHNSON ROBERT P
CPC分类号： G11B15/60 , G11B25/06 , G11B33/02 , Y10S428/90 , Y10S428/928 , Y10T428/12111 , Y10T428/12347 , Y10T428/12451 , Y10T428/12569 , Y10T428/24273 , Y10T428/249923 , Y10T428/31678
摘要： A production process for equipping a rough casting with a plurality of highly accurate surfaces at precisely predetermined locations on the casting without machining the casting. The casting includes a plurality of laterally spaced holes and is placed on a tool which supports a plurality of mounting bosses in the holes of the casting. The tool locates the bosses generally coaxial with the holes so that annular spaces are provided between the exterior of the bosses and the walls of the holes, which spaces are then filled with a bonding agent to secure the bosses to the casting. The tool positions selected faces of the bosses in desired relation to each other, preferably parallel to a reference surface defined by the tool. The tool seals an end of each annular space to prevent the bonding agent from flowing from the space as the agent cures.
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公开(公告)号：US3556957A
公开(公告)日：1971-01-19
申请号：US3556957D
申请日：1966-01-03
申请人： HONEYWELL INC
发明人： TOLEDO EMIL , SEMIENKO PETER P
CPC分类号： C25D5/34 , H01F10/06 , Y10S428/928 , Y10T428/12729 , Y10T428/12903
摘要： A WIRE SUBSTRATE, TYPICALLY BERYLLIUM-COPPER, FOR SUBSEQUENT PLATING WITH MAGNETIC FILMS FOR INFORMATION STORAGE IS PREPARED BY ELECTROLYTICALLY ERODING THE WIRE CONTINUOUSLY IN AN ACID BATH TO REMOVE THE OUTER, BIELBY LAYER, AND SUBSEQUENTLY DEPOSITING THEREON METAL, TYPICALLY COPPER, TO REBUILD THE SUBSTRATE TO THE DESIRED THICKNESS. THE REDUCING BATH PREFERABLY INCLUDES A HALOGEN ADDITIVE.
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公开(公告)号：US3525635A
公开(公告)日：1970-08-25
申请号：US3525635D
申请日：1965-07-01
发明人： HALLER WILLIS DALE
CPC分类号： H01F10/28 , H01F10/10 , Y10S428/928 , Y10S428/936 , Y10T428/12056 , Y10T428/12111 , Y10T428/12542 , Y10T428/12556 , Y10T428/12861 , Y10T428/12931 , Y10T428/12993 , Y10T428/26 , Y10T428/31692
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公开(公告)号：US3516075A
公开(公告)日：1970-06-02
申请号：US3516075D
申请日：1965-10-04
申请人： NCR CO
发明人： WILLER ERNEST M
CPC分类号： G11C5/05 , G11C11/04 , Y10S428/90 , Y10S428/924 , Y10S428/926 , Y10S428/928 , Y10S428/934 , Y10T428/12333 , Y10T428/12889 , Y10T428/12917 , Y10T428/12931 , Y10T428/24479 , Y10T428/2936 , Y10T428/294 , Y10T428/2944 , Y10T428/298
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98.发明授权Bimetallic token with annular ring having different permeability than inner portion 失效双金属带有内部不透气性的环形金属圈
公开(公告)号：US3499739A
公开(公告)日：1970-03-10
申请号：US3499739D
申请日：1966-04-27
申请人： FRANKLIN MINT INC
发明人： SEGEL JOSEPH M
CPC分类号： H01F1/00 , G07F1/06 , Y10S428/927 , Y10S428/928 , Y10T428/12028 , Y10T428/12243 , Y10T428/1225 , Y10T428/12347 , Y10T428/12389 , Y10T428/12465 , Y10T428/1291 , Y10T428/12986
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公开(公告)号：US3489660A
公开(公告)日：1970-01-13
申请号：US3489660D
申请日：1966-01-03
申请人： HONEYWELL INC
发明人： SEMIENKO PETER P , TOLEDO EMIL
CPC分类号： C25D3/562 , H01F41/26 , Y10S428/928 , Y10T428/1291
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公开(公告)号：US3480522A
公开(公告)日：1969-11-25
申请号：US3480522D
申请日：1966-08-18
申请人： IBM
发明人： BROWNLOW JAMES M
CPC分类号： B82Y25/00 , B82Y40/00 , C25D5/10 , C25D5/18 , H01F10/14 , H01F41/26 , H01F41/309 , Y10S205/922 , Y10S428/928 , Y10T428/12632 , Y10T428/12944
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