GB1354387A - Permanent magnets - Google Patents

Permanent magnets

Info

Publication number
GB1354387A
GB1354387A GB5368371A GB5368371A GB1354387A GB 1354387 A GB1354387 A GB 1354387A GB 5368371 A GB5368371 A GB 5368371A GB 5368371 A GB5368371 A GB 5368371A GB 1354387 A GB1354387 A GB 1354387A
Authority
GB
United Kingdom
Prior art keywords
bars
magnetic
support
ferrite
paper
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
GB5368371A
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.)
SERMAG
Original Assignee
SERMAG
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 SERMAG filed Critical SERMAG
Publication of GB1354387A publication Critical patent/GB1354387A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0205—Magnetic circuits with PM in general
    • H01F7/021—Construction of PM
    • H01F7/0215—Flexible forms, sheets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/17—Stator cores with permanent magnets
    • 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
    • Y10T29/49009—Dynamoelectric machine
    • 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
    • Y10T29/49075—Electromagnet, transformer or inductor including permanent magnet or core

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Power Steering Mechanism (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

1354387 Core constructions SOC D'ETUDES ET DE RECHERCHES MAGNETIQUES 18 Nov 1971 [18 Nov 1970] 57683/71 Heading H2A [Also in Division H1] A permanent magnet comprises (Fig. 1) a flexible support 1 of steel, aluminium, brass, or of similarly flexible non-magnetic material; coated with adhesive 2 whereby, e.g. ferrite magnetic bars 3, 4, 5 &c. are affixed. The bars may be cut from the solid before or after affixing, and are subsequently permanently magnetized perpendicularly to the support. A motor stator magnet may comprise two opposite sets of radially permanently magnetized ferrite bars adhesively secured to corresponding flexible steel sheets serving as polepieces, and mounted inside a circular yoke (Fig. 2, not shown). Strontium ferrite is mentioned. The bars may be adhesively secured to a paper support which is bent to shape and block moulded with epoxy resin; the paper being reversed and the block fitted to a polepiece. Plural such ferrite magnets may be adhesively fixed to a non-magnetic support, e.g. paper with the exposed poles in alternate polarities in groups of, e.g. three (Fig. 3, not shown), and the device is stated applicable to magnetic attraction or to a magnetic clutch.
GB5368371A 1970-11-18 1971-11-18 Permanent magnets Expired GB1354387A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7041301A FR2114151A5 (en) 1970-11-18 1970-11-18

Publications (1)

Publication Number Publication Date
GB1354387A true GB1354387A (en) 1974-06-05

Family

ID=9064321

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5368371A Expired GB1354387A (en) 1970-11-18 1971-11-18 Permanent magnets

Country Status (6)

Country Link
US (1) US3710291A (en)
DE (1) DE2158571A1 (en)
FR (1) FR2114151A5 (en)
GB (1) GB1354387A (en)
IT (1) IT940645B (en)
NL (1) NL7115880A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3406807A1 (en) * 1983-02-28 1984-10-04 Nippon Gakki Seizo K.K., Hamamatsu, Shizuoka METHOD FOR PRODUCING A MAGNET
GB2152953A (en) * 1984-01-19 1985-08-14 Univ British Columbia Planar magnetron sputtering device
GB2223882A (en) * 1988-10-13 1990-04-18 Marconi Co Ltd Magnetic apparatus
DE19628722A1 (en) * 1996-07-17 1998-01-22 Esselte Meto Int Gmbh Device for deactivating a securing element for electronic article surveillance
DE29801073U1 (en) * 1998-01-23 1998-08-06 Wampfler Ag Ferrite core
US20100033036A1 (en) * 2006-10-13 2010-02-11 Black & Decker Inc. Motor With Permanent Magnets and Method of Manufacturing; Power Tool With Same
CN105947293A (en) * 2016-06-28 2016-09-21 横店集团东磁股份有限公司 Automatic production line suitable for packaging magnetic shoes and realization method of automatic production line

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080542A (en) * 1974-04-08 1978-03-21 Photocircuits Division Of Kollmorgen Corporation High density flux magnetic circuit
US4002937A (en) * 1975-07-03 1977-01-11 Dickey-John Corporation Magnetic sensing device
US4091300A (en) * 1975-08-30 1978-05-23 Lucas Industries Limited Permanent magnet electrical machines
US4645960A (en) * 1979-07-30 1987-02-24 Litton Systems, Inc. Ferro-fluid bearing
US4451811A (en) * 1979-07-30 1984-05-29 Litton Systems, Inc. Magnet structure
DE3069509D1 (en) * 1979-08-16 1984-11-29 Inoue Japax Res Manufacture and use of magnetic scale systems
US4599826A (en) * 1984-03-05 1986-07-15 Institut Sverkhtverdykh Materialov Akademii Naukukrainskoi Ssr Device for magnetoabrasive machining of workpieces
US4834870A (en) * 1987-09-04 1989-05-30 Huron Valley Steel Corporation Method and apparatus for sorting non-ferrous metal pieces
DE3800703A1 (en) * 1988-01-13 1989-08-03 Beloit Corp DEVICE FOR REWINDING RAILS
US4869811A (en) * 1988-07-05 1989-09-26 Huron Valley Steel Corporation Rotor for magnetically sorting different metals
JPH02101948A (en) * 1988-10-05 1990-04-13 Hitachi Ltd Low speed high torque motor and manufacture thereof and field magnet
US5030344A (en) * 1989-07-24 1991-07-09 H.K. Research & Development, Inc. Magnetic fluid conditioner
IT1252066B (en) * 1991-11-25 1995-05-29 Ilpea Ind Spa MAGNETIC GASKET SUITABLE FOR MAKING A SEAL BETWEEN A FIXED PART AND AN OPENABLE PART
US5275292A (en) * 1992-05-18 1994-01-04 Brugger Richard D Eddy current separator
GB9215110D0 (en) * 1992-07-16 1992-08-26 Cookson Group Plc Method for the fabrication of multipole magnets
US5522513A (en) * 1994-03-30 1996-06-04 Howell; Billy R. Separator disc
US5556540A (en) * 1994-06-30 1996-09-17 Brunsting; William J. Magnetic assembly for a closed pressurized flow path of lubricating oil
DE29515302U1 (en) * 1995-09-25 1995-11-30 Baermann Horst Rheinmagnet Magnet arrangement
US5714063A (en) * 1996-05-28 1998-02-03 Brunsting; William J. Apparatus for the removal of ferrous particles from liquids
DE19734303B4 (en) * 1997-08-08 2005-09-22 Siemens Ag magnetic wheel
US7038343B2 (en) * 2002-02-22 2006-05-02 Black & Decker Inc. Field assembly for a motor and method of making same
US6903475B2 (en) * 2001-02-23 2005-06-07 Black & Decker Inc. Stator assembly with an overmolding that secures magnets to a flux ring and the flux ring to a stator housing
KR100533012B1 (en) * 2004-01-10 2005-12-02 엘지전자 주식회사 Stater structure for reciprocating motor
DE102006045950A1 (en) * 2006-09-26 2008-04-03 Thyssenkrupp Transrapid Gmbh Magnet arrangement for magnetic levitation vehicle, has reference surface extended in unloaded condition of magnetic poles along bending line that is formed inverse to curve of surface, when pole surfaces lie in unloaded condition in plane
FR2910194B1 (en) * 2006-12-15 2015-03-06 Valeo Equip Electr Moteur ROTATING ELECTRIC MACHINE, IN PARTICULAR FOR MOTOR VEHICLE STARTER
JP4888568B2 (en) * 2008-05-23 2012-02-29 パナソニック株式会社 Manufacturing method of rare earth-iron ring magnet with anisotropy controlled continuously
DE102009021703B4 (en) * 2009-05-18 2013-08-14 Compact Dynamics Gmbh Improved permanent magnet synchronous machine
CA2799530C (en) * 2010-05-16 2018-08-28 Gooper Hermetic Ltd. Flexible magnetic sealing apparatus
US10491087B2 (en) * 2013-10-01 2019-11-26 Whirlpool Corporation Method of manufacturing a rotor for an electric motor for a washing machine
US10008325B2 (en) * 2015-06-08 2018-06-26 Apple Inc. Thin magnet fabrication
US10993505B1 (en) * 2019-08-29 2021-05-04 Frank Dale Boxberger Flexible magnetic fastening apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE842817C (en) * 1950-04-23 1952-07-03 Deutsche Edelstahlwerke Ag Process for the production of magnets with iron conducting parts
US2958019A (en) * 1956-09-17 1960-10-25 Indiana General Corp Magnetic pad assembly
GB875807A (en) * 1957-02-09 1961-08-23 Baermann Max Improvements in or relating to permanent magnets
US3173066A (en) * 1961-06-22 1965-03-09 Gen Motors Corp Magnetic sealing strip
BE624425A (en) * 1961-11-13
US3368275A (en) * 1962-07-03 1968-02-13 Syncro Corp Casting, machining, and assembling a magnetic motor ring structure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3406807A1 (en) * 1983-02-28 1984-10-04 Nippon Gakki Seizo K.K., Hamamatsu, Shizuoka METHOD FOR PRODUCING A MAGNET
GB2152953A (en) * 1984-01-19 1985-08-14 Univ British Columbia Planar magnetron sputtering device
GB2223882A (en) * 1988-10-13 1990-04-18 Marconi Co Ltd Magnetic apparatus
DE19628722A1 (en) * 1996-07-17 1998-01-22 Esselte Meto Int Gmbh Device for deactivating a securing element for electronic article surveillance
DE29801073U1 (en) * 1998-01-23 1998-08-06 Wampfler Ag Ferrite core
US20100033036A1 (en) * 2006-10-13 2010-02-11 Black & Decker Inc. Motor With Permanent Magnets and Method of Manufacturing; Power Tool With Same
US8823234B2 (en) * 2006-10-13 2014-09-02 Black & Decker Inc. Motor with permanent magnets having essentially the same inner and outer radius; and method of manufacturing a motor stator housing with permanent magnets
CN105947293A (en) * 2016-06-28 2016-09-21 横店集团东磁股份有限公司 Automatic production line suitable for packaging magnetic shoes and realization method of automatic production line
CN105947293B (en) * 2016-06-28 2018-07-20 横店集团东磁股份有限公司 A kind of automatic production line and its implementation suitable for magnetic shoe packaging

Also Published As

Publication number Publication date
DE2158571A1 (en) 1972-06-08
FR2114151A5 (en) 1972-06-30
NL7115880A (en) 1972-05-23
US3710291A (en) 1973-01-09
IT940645B (en) 1973-02-20

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed