BE414989A - - Google Patents

Info

Publication number
BE414989A
BE414989A BE414989DA BE414989A BE 414989 A BE414989 A BE 414989A BE 414989D A BE414989D A BE 414989DA BE 414989 A BE414989 A BE 414989A
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 BE414989A publication Critical patent/BE414989A/xx

Links

Classifications

    • 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
BE414989D 1935-04-13 BE414989A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16261A US2029282A (en) 1935-04-13 1935-04-13 Magnetic circuit and construction thereof

Publications (1)

Publication Number Publication Date
BE414989A true BE414989A (enrdf_load_html_response)

Family

ID=21776210

Family Applications (1)

Application Number Title Priority Date Filing Date
BE414989D BE414989A (enrdf_load_html_response) 1935-04-13

Country Status (4)

Country Link
US (1) US2029282A (enrdf_load_html_response)
BE (1) BE414989A (enrdf_load_html_response)
FR (1) FR804856A (enrdf_load_html_response)
GB (1) GB473648A (enrdf_load_html_response)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427571A (en) * 1947-09-16 Magnetic structure for electrical
US2458158A (en) * 1942-11-25 1949-01-04 Permoflux Corp Magnetically shielded electrodynamic sound reproducer
DE898643C (de) * 1943-01-16 1953-12-03 Deutsche Edelstahlwerke Ag Ringspaltmagnetsystem
US2438985A (en) * 1945-02-26 1948-04-06 Anthony A Ambrose Electromagnet
US2524780A (en) * 1945-07-07 1950-10-10 Rola Company Inc Pole piece centering arrangement for permanent magnet electrodynamic loudspeakers
BE469578A (enrdf_load_html_response) * 1945-11-30
US2501031A (en) * 1945-11-30 1950-03-21 Rca Corp Magnetic field structure for dynamic loud-speakers and the like
US2534819A (en) * 1947-02-27 1950-12-19 Jensen Mfg Company Magnetic structure for speakers
GB625591A (en) * 1947-03-04 1949-06-30 Paul Gustavus Adolphus Helmuth Improvements in magnets
US2533498A (en) * 1948-06-19 1950-12-12 Donald G Munson Magnet support for radio speakers
US2567365A (en) * 1948-08-04 1951-09-11 Bell Telephone Labor Inc Polarized operator for telephone receivers
US2557080A (en) * 1948-09-16 1951-06-19 Dawson Samuel Edward Magnetoelectric transducer for measurement of velocity and related values
US2517727A (en) * 1948-12-02 1950-08-08 Rola Company Inc Permanent magnet structure for electrodynamic loud-speakers
US2754373A (en) * 1952-08-22 1956-07-10 Harry B Shaper Miniature hearing-aid receiver
DE1036923B (de) * 1954-06-11 1958-08-21 Isophon Werke Ges Mit Beschrae Befestigung des Membrankorbes bei Konuslautsprechern
US3247331A (en) * 1954-07-30 1966-04-19 Rca Corp Magnetic structure for a loudspeaker
US3497638A (en) * 1967-03-20 1970-02-24 Ltv Ling Altec Inc Explosion-proof acoustic device
US5532665A (en) * 1994-01-21 1996-07-02 Alliedsignal, Inc. Low stress magnet interface
CN102026074A (zh) * 2010-12-29 2011-04-20 瑞声声学科技(深圳)有限公司 微型换能器件
US8958597B2 (en) 2012-03-23 2015-02-17 Coleridge Design Associates Llc Speaker with voice coil and field coil

Also Published As

Publication number Publication date
GB473648A (en) 1937-10-14
US2029282A (en) 1936-01-28
FR804856A (fr) 1936-11-04

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