FR2335118A1 - ELECTRO-ACOUSTIC TRANSDUCER, ESPECIALLY FOR SPEAKER AND EARPHONES - Google Patents

ELECTRO-ACOUSTIC TRANSDUCER, ESPECIALLY FOR SPEAKER AND EARPHONES

Info

Publication number
FR2335118A1
FR2335118A1 FR7637247A FR7637247A FR2335118A1 FR 2335118 A1 FR2335118 A1 FR 2335118A1 FR 7637247 A FR7637247 A FR 7637247A FR 7637247 A FR7637247 A FR 7637247A FR 2335118 A1 FR2335118 A1 FR 2335118A1
Authority
FR
France
Prior art keywords
earphones
electro
speaker
acoustic transducer
acoustic
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.)
Granted
Application number
FR7637247A
Other languages
French (fr)
Other versions
FR2335118B1 (en
Inventor
Gareth Peter Millward
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.)
Rank Organization Ltd
Original Assignee
Rank Organization Ltd
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 Rank Organization Ltd filed Critical Rank Organization Ltd
Publication of FR2335118A1 publication Critical patent/FR2335118A1/en
Application granted granted Critical
Publication of FR2335118B1 publication Critical patent/FR2335118B1/fr
Granted 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
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction
    • H04R9/047—Construction in which the windings of the moving coil lay in the same plane
FR7637247A 1975-12-11 1976-12-10 ELECTRO-ACOUSTIC TRANSDUCER, ESPECIALLY FOR SPEAKER AND EARPHONES Granted FR2335118A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5081275A GB1545517A (en) 1975-12-11 1975-12-11 Transducer

Publications (2)

Publication Number Publication Date
FR2335118A1 true FR2335118A1 (en) 1977-07-08
FR2335118B1 FR2335118B1 (en) 1982-04-23

Family

ID=10457472

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7637247A Granted FR2335118A1 (en) 1975-12-11 1976-12-10 ELECTRO-ACOUSTIC TRANSDUCER, ESPECIALLY FOR SPEAKER AND EARPHONES

Country Status (6)

Country Link
JP (1) JPS5292507A (en)
BE (1) BE849303A (en)
DE (1) DE2656068A1 (en)
FR (1) FR2335118A1 (en)
GB (1) GB1545517A (en)
NL (1) NL7613813A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0012608A1 (en) * 1978-12-14 1980-06-25 The Rank Organisation Limited Isodynamic electromagnetic acoustic transducer with stressed diaphragm
WO1995024815A1 (en) * 1994-03-08 1995-09-14 Jonathan Neil Smith Electromagnetic loudspeaker
GB2301507A (en) * 1994-03-08 1996-12-04 Jonathan Neil Smith Electromagnetic loudspeaker

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3301848C2 (en) * 1983-01-20 1984-11-08 Siemens AG, 1000 Berlin und 8000 München Ultrasonic transducer
US4536673A (en) * 1984-01-09 1985-08-20 Siemens Aktiengesellschaft Piezoelectric ultrasonic converter with polyurethane foam damper
DE69728170T2 (en) * 1997-11-13 2004-09-02 Protro Co., Ltd., Hamamatsu THIN ELECTROMAGNETIC CONVERTER

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1815564A (en) * 1929-06-13 1931-07-21 Westinghouse Electric & Mfg Co Translating device
FR2119026A1 (en) * 1970-12-23 1972-08-04 Magnepan Inc
US3873784A (en) * 1973-03-29 1975-03-25 Audio Arts Inc Acoustic transducer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1815564A (en) * 1929-06-13 1931-07-21 Westinghouse Electric & Mfg Co Translating device
FR2119026A1 (en) * 1970-12-23 1972-08-04 Magnepan Inc
US3873784A (en) * 1973-03-29 1975-03-25 Audio Arts Inc Acoustic transducer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0012608A1 (en) * 1978-12-14 1980-06-25 The Rank Organisation Limited Isodynamic electromagnetic acoustic transducer with stressed diaphragm
WO1995024815A1 (en) * 1994-03-08 1995-09-14 Jonathan Neil Smith Electromagnetic loudspeaker
GB2301507A (en) * 1994-03-08 1996-12-04 Jonathan Neil Smith Electromagnetic loudspeaker
GB2301507B (en) * 1994-03-08 1997-11-19 Jonathan Neil Smith Electromagnetic loudspeaker

Also Published As

Publication number Publication date
JPS5292507A (en) 1977-08-04
GB1545517A (en) 1979-05-10
NL7613813A (en) 1977-06-14
DE2656068A1 (en) 1977-06-23
BE849303A (en) 1977-04-01
FR2335118B1 (en) 1982-04-23

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse