NL111475C - - Google Patents

Info

Publication number
NL111475C
NL111475C NL111475DA NL111475C NL 111475 C NL111475 C NL 111475C NL 111475D A NL111475D A NL 111475DA NL 111475 C NL111475 C NL 111475C
Authority
NL
Netherlands
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 NL111475C publication Critical patent/NL111475C/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
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0273—Magnetic circuits with PM for magnetic field generation
    • H01F7/0289—Transducers, loudspeakers, moving coil arrangements
    • 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
NL111475D 1958-10-15 NL111475C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL232314 1958-10-15

Publications (1)

Publication Number Publication Date
NL111475C true NL111475C (en)

Family

ID=19751389

Family Applications (2)

Application Number Title Priority Date Filing Date
NL232314D NL232314A (en) 1958-10-15
NL111475D NL111475C (en) 1958-10-15

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL232314D NL232314A (en) 1958-10-15

Country Status (7)

Country Link
US (1) US3067366A (en)
CH (1) CH376149A (en)
DE (1) DE1176768B (en)
ES (1) ES252608A1 (en)
FR (1) FR1247967A (en)
GB (1) GB927545A (en)
NL (2) NL111475C (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3134057A (en) * 1960-07-11 1964-05-19 Sumitomo Metal Ind Magnetic circuit for the deflection of flux leakage
US3387707A (en) * 1965-06-14 1968-06-11 Westinghouse Electric Corp Permanent magnet assembly
US3478289A (en) * 1968-02-12 1969-11-11 Robert A Parnell Permanent magnet assembly for a loudspeaker assembly
DE1907969A1 (en) * 1968-03-01 1969-09-25 Philips Nv Magnet system with a ring-shaped permanent main magnet with a soft iron top and bottom plate and a core with an auxiliary magnet
FR2160353B1 (en) * 1971-11-15 1976-06-11 Knorr Bremse Gmbh
GB1360080A (en) * 1971-12-22 1974-07-17 Melnikov J A Magnetic system
US4323843A (en) * 1978-12-06 1982-04-06 Batham Ian N Magnetic contamination detector
DE3339720A1 (en) * 1983-11-03 1985-05-15 Magnetfabrik Bonn Gmbh Vorm. Gewerkschaft Windhorst, 5300 Bonn LOW-SPREADING POT MAGNET SYSTEM FOR MAGNETIC-DYNAMIC SPEAKERS OR ACOUSTIC CONVERTER
US5142260A (en) * 1991-03-08 1992-08-25 Harman International Industries, Incorporated Transducer motor assembly
US5197104A (en) * 1991-04-18 1993-03-23 Josef Lakatos Electrodynamic loudspeaker with electromagnetic impedance sensor coil
GB9206014D0 (en) * 1992-03-19 1992-04-29 Oxford Instr Ltd Magnet assembly
JPH06233379A (en) * 1993-02-02 1994-08-19 Kenwood Corp Speaker
US5409236A (en) * 1993-12-23 1995-04-25 Therrien; Joel M. Magnetic game or puzzle and method for making same
US5802191A (en) * 1995-01-06 1998-09-01 Guenther; Godehard A. Loudspeakers, systems, and components thereof
US5883967A (en) * 1997-04-15 1999-03-16 Harman International Industries, Incorporated Slotted diaphragm loudspeaker
US5879549A (en) * 1997-09-13 1999-03-09 Caiozza; Joseph Filter cartridge magnetic attachment
US8588457B2 (en) 1999-08-13 2013-11-19 Dr. G Licensing, Llc Low cost motor design for rare-earth-magnet loudspeakers
JP2002530967A (en) * 1998-11-13 2002-09-17 エイ グエンサー ゴードハード Low cost motor design for rare earth magnet loudspeakers
EP1247424B1 (en) 1999-08-13 2013-11-20 Dr. G Licensing, LLC Low cost broad range loudspeaker and system
US20020150275A1 (en) * 2000-06-27 2002-10-17 Guenther Godehard A. Low profile speaker and system
US6611606B2 (en) 2000-06-27 2003-08-26 Godehard A. Guenther Compact high performance speaker
US6993147B2 (en) * 2000-08-14 2006-01-31 Guenther Godehard A Low cost broad range loudspeaker and system
US6835048B2 (en) * 2002-12-18 2004-12-28 Varian, Inc. Ion pump having secondary magnetic field
US20080247582A1 (en) * 2004-09-09 2008-10-09 Guenther Godehard A Loudspeaker and Systems
US8189840B2 (en) * 2007-05-23 2012-05-29 Soundmatters International, Inc. Loudspeaker and electronic devices incorporating same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2141595A (en) * 1937-01-13 1938-12-27 Cinaudagraph Corp Magnet structure
BE440964A (en) * 1939-10-05
DE1011466B (en) * 1955-06-18 1957-07-04 Philips Patentverwaltung Magnet system for electroacoustic transducers
DE1742108U (en) * 1956-06-14 1957-03-28 Deutsche Edelstahlwerke Ag PERMANENT MAGNET SYSTEM WITH CENTRAL IRON CORE, IN PARTICULAR FOR LOUDSPEAKERS AND DIVING REEL MICROPHONES.
US2923783A (en) * 1957-06-17 1960-02-02 Stanley F White Electro-acoustical transducer
US2915681A (en) * 1957-11-20 1959-12-01 Indiana Steel Products Co Magnet assemblies

Also Published As

Publication number Publication date
ES252608A1 (en) 1959-12-01
CH376149A (en) 1964-03-31
DE1176768B (en) 1964-08-27
GB927545A (en) 1963-05-29
FR1247967A (en) 1960-12-09
US3067366A (en) 1962-12-04
NL232314A (en)

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