FR2168575B1 - - Google Patents

Info

Publication number
FR2168575B1
FR2168575B1 FR7302001A FR7302001A FR2168575B1 FR 2168575 B1 FR2168575 B1 FR 2168575B1 FR 7302001 A FR7302001 A FR 7302001A FR 7302001 A FR7302001 A FR 7302001A FR 2168575 B1 FR2168575 B1 FR 2168575B1
Authority
FR
France
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
FR7302001A
Other versions
FR2168575A1 (fr
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of FR2168575A1 publication Critical patent/FR2168575A1/fr
Application granted granted Critical
Publication of FR2168575B1 publication Critical patent/FR2168575B1/fr
Expired legal-status Critical Current

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
FR7302001A 1972-01-21 1973-01-19 Expired FR2168575B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21971872A 1972-01-21 1972-01-21

Publications (2)

Publication Number Publication Date
FR2168575A1 FR2168575A1 (fr) 1973-08-31
FR2168575B1 true FR2168575B1 (fr) 1977-02-04

Family

ID=22820492

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7302001A Expired FR2168575B1 (fr) 1972-01-21 1973-01-19

Country Status (9)

Country Link
US (1) US3763334A (fr)
JP (1) JPS4883817A (fr)
BE (1) BE794025A (fr)
DE (1) DE2302385A1 (fr)
ES (1) ES410589A1 (fr)
FR (1) FR2168575B1 (fr)
GB (1) GB1409789A (fr)
IT (1) IT978181B (fr)
NL (1) NL7217774A (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451811A (en) * 1979-07-30 1984-05-29 Litton Systems, Inc. Magnet structure
US4645960A (en) * 1979-07-30 1987-02-24 Litton Systems, Inc. Ferro-fluid bearing
US4878560A (en) * 1989-03-16 1989-11-07 Scott Robert T Earmold
NO167699C (no) * 1989-05-16 1991-11-27 Infrawave Tech As Elektromekanisk transduser for lavfrekvente vibrasjoner.
SK307792A3 (en) * 1991-03-13 1994-04-06 Teves Gmbh Alfred Double-tube shock absorber
EP0624049B1 (fr) * 1993-04-28 2002-06-12 Matsushita Electric Industrial Co., Ltd. Appareil haut-parleur
DE29512102U1 (de) * 1995-07-27 1995-10-05 Nokia Deutschland Gmbh Magnetsystem
DE19616794B4 (de) * 1996-04-26 2005-09-29 Harman Audio Electronic Systems Gmbh Lautsprecher
DE10215364B4 (de) * 2002-04-08 2004-05-27 Harman/Becker Automotive Systems Gmbh (Straubing Division) Antriebsanordnung für einen Lautsprecher
DE10232643A1 (de) * 2002-07-18 2004-02-12 Harman/Becker Automotive Systems Gmbh (Straubing Division) Antriebsanordnung für einen Lautsprecher
FR2960738B1 (fr) * 2010-05-28 2015-09-25 Focal Jmlab Haut-parleur acoustique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2293078A (en) * 1939-12-05 1942-08-18 B A Proctor Company Inc Microphone
US2860721A (en) * 1954-03-24 1958-11-18 Fauthal A Hassan Sound reproducing device
DE971442C (de) * 1954-08-29 1959-01-29 Standard Elek K Lorenz Ag Dynamischer Lautsprecher
USRE26030E (en) * 1956-02-28 1966-05-24 Dynamic transducer
US3046362A (en) * 1956-11-06 1962-07-24 Stanley F White Speaker
US2923783A (en) * 1957-06-17 1960-02-02 Stanley F White Electro-acoustical transducer
US3413579A (en) * 1966-03-14 1968-11-26 Westinghouse Electric Corp Magnetic field assembly for electro-mechanical transducers

Also Published As

Publication number Publication date
US3763334A (en) 1973-10-02
DE2302385A1 (de) 1973-07-26
GB1409789A (en) 1975-10-15
JPS4883817A (fr) 1973-11-08
IT978181B (it) 1974-09-20
NL7217774A (fr) 1973-07-24
BE794025A (fr) 1973-05-02
FR2168575A1 (fr) 1973-08-31
ES410589A1 (es) 1975-12-16

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Legal Events

Date Code Title Description
ST Notification of lapse