BE505468A - - Google Patents

Info

Publication number
BE505468A
BE505468A BE505468DA BE505468A BE 505468 A BE505468 A BE 505468A BE 505468D A BE505468D A BE 505468DA BE 505468 A BE505468 A BE 505468A
Authority
BE
Belgium
Application number
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.)
Publication of BE505468A publication Critical patent/BE505468A/xx

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
    • H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
    • H01F1/0311—Compounds
    • H01F1/0313—Oxidic compounds
    • H01F1/0315—Ferrites
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/022—Aspects regarding the stray flux internal or external to the magnetic circuit, e.g. shielding, shape of magnetic circuit, flux compensation coils

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Hard Magnetic Materials (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
BE505468D 1951-04-23 BE505468A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL313462X 1951-04-23

Publications (1)

Publication Number Publication Date
BE505468A true BE505468A (zh)

Family

ID=19783713

Family Applications (1)

Application Number Title Priority Date Filing Date
BE505468D BE505468A (zh) 1951-04-23

Country Status (5)

Country Link
US (1) US2698917A (zh)
BE (1) BE505468A (zh)
CH (1) CH313462A (zh)
FR (1) FR1041525A (zh)
GB (1) GB708136A (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1011466B (de) * 1955-06-18 1957-07-04 Philips Patentverwaltung Magnetsystem fuer elektroakustische Wandler
DE1020098B (de) * 1955-10-03 1957-11-28 Stepper & Co Bremsmagnetanordnung fuer eine Laeuferscheibe, insbesondere von Elektrizitaetszaehlern

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778803A (en) * 1953-02-06 1957-01-22 Aerovox Corp Magnetically hard materials
US2943246A (en) * 1956-02-28 1960-06-28 Howard C Riordan Magnetic detachable holding device
US2920253A (en) * 1956-03-06 1960-01-05 Engineered Products Company Magnetic catch
US2972745A (en) * 1956-04-17 1961-02-21 Hamilton Watch Co Electric wrist watch
US2966106A (en) * 1957-01-05 1960-12-27 Schneider Co Optische Werke Magnetic system for producing arcuate motions
US2923783A (en) * 1957-06-17 1960-02-02 Stanley F White Electro-acoustical transducer
US3095525A (en) * 1958-01-20 1963-06-25 Crucible Steel Co America Permanent magnet assembly
US3090107A (en) * 1958-07-24 1963-05-21 Sylvania Electric Prod Method of making a permanent magnet
US3022398A (en) * 1959-05-15 1962-02-20 Fluidwick Company Inc Electric control device
US3049636A (en) * 1959-06-22 1962-08-14 Chrysler Corp Magnetically driven devices
US3000016A (en) * 1960-03-03 1961-09-19 Stockwell A Ridge Magnetic securing means
DE1172384B (de) * 1960-03-03 1964-06-18 Magnetfab Bonn Gmbh Magnetischer flexibler Schichtkoerper
US3034320A (en) * 1960-03-21 1962-05-15 Coro Inc Magnetic earring construction including means to concentrate the magnetic force
US3071939A (en) * 1960-05-27 1963-01-08 Coro Inc Magnetic earring with slidably pivoted clamp members
US3134057A (en) * 1960-07-11 1964-05-19 Sumitomo Metal Ind Magnetic circuit for the deflection of flux leakage
US3140430A (en) * 1960-07-15 1964-07-07 Radio Frequency Lab Inc Standard magnet structure with predetermined air-gap
US3173067A (en) * 1962-03-22 1965-03-09 Westinghouse Electric Corp Temperature-compensated permanent-magnet devices
US3413551A (en) * 1964-06-22 1968-11-26 Westinghouse Electric Corp Induction devices having low side thrust
US3304527A (en) * 1965-04-26 1967-02-14 Ibm Magnetic holding and aligning device
BE755398A (fr) * 1969-11-28 1971-02-01 Honeywell Inc Agencement d'excitation par aimant pour un dispositif magneto-sensible,et procede pour le realiser
US4077242A (en) * 1976-12-15 1978-03-07 Sedley Bruce S Metal magnetic key
US5125134A (en) * 1985-12-27 1992-06-30 Tamao Morita Magnetic fastener
FR2614656B1 (fr) * 1987-04-30 1989-06-16 Comadur Sa Dispositif magnetique d'assemblage, notamment pour prothese dentaire
US4857841A (en) * 1987-12-29 1989-08-15 Eaton Corporation Proximity detector employing magneto resistive sensor in the central magnetic field null of a toroidal magnet
JP2561109B2 (ja) * 1988-01-27 1996-12-04 株式会社応用技術研究所 磁気掛止具
JPH02105503A (ja) * 1988-10-14 1990-04-18 Oyo Gijutsu Kenkyusho:Kk 磁気掛止具
JP3161673B2 (ja) * 1994-05-30 2001-04-25 松下電器産業株式会社 マイクロスピーカ用磁気回路ユニット及びその製造方法
JPH11275678A (ja) * 1998-03-25 1999-10-08 Sony Corp スピーカ装置
US7372968B2 (en) * 2000-11-08 2008-05-13 New Transducers Limited Loudspeaker driver
US20040005074A1 (en) * 2002-07-08 2004-01-08 Sun Technique Electric Co., Ltd. Hi-fi tweeter
US8358801B2 (en) 2007-02-12 2013-01-22 Robert Katz Magnetic circuit for electrodynamic moving voice coil actuators
US10978230B2 (en) * 2018-11-07 2021-04-13 Livivos Inc. Magnet arrangement for producing a field suitable for NMR in a concave region

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB406086A (en) * 1932-11-03 1934-02-22 Darwins Ltd Improvements in or relating to permanent magnets
FR867783A (fr) * 1939-11-24 1941-11-27 Thomson Houston Comp Francaise Perfectionnements aux aimants permanents
GB549643A (en) * 1941-05-27 1942-12-01 Standard Telephones Cables Ltd Improvements in or relating to telephone transmitters and receivers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1011466B (de) * 1955-06-18 1957-07-04 Philips Patentverwaltung Magnetsystem fuer elektroakustische Wandler
DE1020098B (de) * 1955-10-03 1957-11-28 Stepper & Co Bremsmagnetanordnung fuer eine Laeuferscheibe, insbesondere von Elektrizitaetszaehlern

Also Published As

Publication number Publication date
GB708136A (en) 1954-04-28
CH313462A (de) 1956-04-15
FR1041525A (fr) 1953-10-23
US2698917A (en) 1955-01-04

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