EP0077228A3 - Electroacoustic transducer - Google Patents

Electroacoustic transducer Download PDF

Info

Publication number: EP0077228A3
Authority: EP; European Patent Office
Prior art keywords: electroacoustic transducer; electroacoustic; transducer
Prior art date: 1981-09-17
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

EP82401685A

Other versions

EP0077228B1 (en

EP0077228A2 (en

Inventor

Tadashi Sawafuji

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.)

Individual

Original Assignee

Individual

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.)

1981-09-17

Filing date

1982-09-16

Publication date

1983-06-01

1982-09-16 Application filed by Individual filed Critical Individual

1983-04-20 Publication of EP0077228A2 publication Critical patent/EP0077228A2/en

1983-06-01 Publication of EP0077228A3 publication Critical patent/EP0077228A3/en

1986-02-26 Application granted granted Critical

1986-02-26 Publication of EP0077228B1 publication Critical patent/EP0077228B1/en

Status Expired legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
- H04R9/063—Loudspeakers using a plurality of acoustic drivers

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Diaphragms For Electromechanical Transducers (AREA)

EP82401685A 1981-09-17 1982-09-16 Electroacoustic transducer Expired EP0077228B1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP13797881U JPS5843091U (en)	1981-09-17	1981-09-17	Diaphragm for electroacoustic transducer
JP137978/81U		1981-09-17

Publications (3)

Publication Number	Publication Date
EP0077228A2 EP0077228A2 (en)	1983-04-20
EP0077228A3 true EP0077228A3 (en)	1983-06-01
EP0077228B1 EP0077228B1 (en)	1986-02-26

Family

ID=15211184

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP82401685A Expired EP0077228B1 (en)	1981-09-17	1982-09-16	Electroacoustic transducer

Country Status (3)

Country	Link
EP (1)	EP0077228B1 (en)
JP (1)	JPS5843091U (en)
DE (1)	DE3269415D1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4586192A (en) *	1984-01-27	1986-04-29	Robert B. Welch	Soundstage boundary expansion system
GB2193413A (en) *	1985-12-10	1988-02-03	Reefgrade Limited	Electromechanical transducer
GB2194707A (en) *	1985-12-10	1988-03-09	Reefgrade Limited	Electromechanical transducer
JPS62154276A (en) *	1985-12-26	1987-07-09	Konishiroku Photo Ind Co Ltd	Recording and reproducing device for magnetic sheet
US5103482A (en) *	1988-07-28	1992-04-07	Fabri Conti Lucas	Apparatus and method for reproducing high fidelity sound
EP0529143A3 (en) *	1991-08-30	1993-07-07	Filip Keller	Diaphragm for loudspeaker or microphone
FR2851115B1 (en)	2003-02-10	2008-01-25	Patrick Hoffmann	ACOUSTIC TRANSDUCER GENERATING SOUND RADIATION BY COMPRESSION AND EXPANSION OF AIR MASS SITUATED BETWEEN A MOBILE MEMBRANE AND A FIXED SURFACE OR BETWEEN TWO MOBILE MEMBRANES
JP6048469B2 (en) *	2013-10-22	2016-12-21	ヤマハ株式会社	Electroacoustic transducer
JP6048470B2 (en)	2013-10-22	2016-12-21	ヤマハ株式会社	Electroacoustic transducer
WO2016110991A1 (en) *	2015-01-09	2016-07-14	ヤマハ株式会社	Electroacoustic transducer
WO2016110992A1 (en) *	2015-01-09	2016-07-14	ヤマハ株式会社	Electroacoustic transducer

Citations (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1251381B (en) *	1964-06-16
GB246099A (en) *	1925-01-15	1926-05-13	Lee De Forest	Improvements in sound reproducing devices
GB256252A (en) *	1925-08-01	1927-01-27	Louis Lumiere	Improvements in acoustic diaphragms
FR621452A (en) *	1925-08-11	1927-05-12	Siemens Ag	Acoustic instrument
US1638245A (en) *	1925-07-17	1927-08-09	Davis Charles Crawford	Loud speaker
DE464015C (en) *	1926-08-29	1928-08-14	Siemens & Halske Akt Ges	Membrane for sound apparatus
US1866090A (en) *	1926-05-22	1932-07-05	Forest Lee De	Sound reproducing device
FR2410409A1 (en) *	1977-11-26	1979-06-22	Sony Corp	DYNAMIC SPEAKER
WO1980001128A1 (en) *	1978-11-16	1980-05-29	Audax	Electro acoustic transducer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5754499A (en) *	1980-09-19	1982-03-31	Sawafuji Dainameka Kk	Electromagnetic converter

1981
- 1981-09-17 JP JP13797881U patent/JPS5843091U/en active Pending
1982
- 1982-09-16 DE DE8282401685T patent/DE3269415D1/en not_active Expired
- 1982-09-16 EP EP82401685A patent/EP0077228B1/en not_active Expired

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB246099A (en) *	1925-01-15	1926-05-13	Lee De Forest	Improvements in sound reproducing devices
US1638245A (en) *	1925-07-17	1927-08-09	Davis Charles Crawford	Loud speaker
GB256252A (en) *	1925-08-01	1927-01-27	Louis Lumiere	Improvements in acoustic diaphragms
FR621452A (en) *	1925-08-11	1927-05-12	Siemens Ag	Acoustic instrument
US1866090A (en) *	1926-05-22	1932-07-05	Forest Lee De	Sound reproducing device
DE464015C (en) *	1926-08-29	1928-08-14	Siemens & Halske Akt Ges	Membrane for sound apparatus
DE1251381B (en) *	1964-06-16
FR2410409A1 (en) *	1977-11-26	1979-06-22	Sony Corp	DYNAMIC SPEAKER
WO1980001128A1 (en) *	1978-11-16	1980-05-29	Audax	Electro acoustic transducer

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
FUNKSCHAU, vol. 52, no. 3, February 1980, pages 78-80, Münich (DE); *
PATENTS ABSTRACTS OF JAPAN, vol. 1, no. 38, 19th April 1977, page 2274 E76; & JP - A - 51 135 638 (TORIO K.K.) (24-11-1976) *

Also Published As

Publication number	Publication date
DE3269415D1 (en)	1986-04-03
EP0077228B1 (en)	1986-02-26
EP0077228A2 (en)	1983-04-20
JPS5843091U (en)	1983-03-23

Legal Events

Date	Code	Title	Description
1983-02-19	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1983-03-30	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1983-04-20	AK	Designated contracting states	Designated state(s): DE FR GB
1983-06-01	AK	Designated contracting states	Designated state(s): DE FR GB
1984-02-01	17P	Request for examination filed	Effective date: 19831128
1986-01-11	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1986-02-26	AK	Designated contracting states	Designated state(s): DE FR GB
1986-04-03	REF	Corresponds to:	Ref document number: 3269415 Country of ref document: DE Date of ref document: 19860403
1986-04-11	ET	Fr: translation filed
1987-01-10	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1987-01-10	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1987-02-25	26N	No opposition filed
1988-05-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19880531
1988-06-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Effective date: 19880601
1988-07-22	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
1988-09-16	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19880916
1989-06-01	GBPC	Gb: european patent ceased through non-payment of renewal fee

Publication	Publication Date	Title
DE3265798D1 (en)	1985-10-03	Mixed electroacoustic transducer
DE3364454D1 (en)	1986-08-21	Electroacoustic transducer
GB8314336D0 (en)	1983-06-29	Electroacoustic transducer
SG64388G (en)	1989-03-10	Electro-acoustic transducers
GB2138144B (en)	1986-07-16	Cardio-respiration transducer
GB2122453B (en)	1986-01-08	Large-excursion electroacoustic transducer
GB2164226B (en)	1987-03-18	Electroacoustic transducer
GB8407922D0 (en)	1984-05-02	Transducer
US4473722B1 (en)	1995-06-20	Electroacoustic transducers
GB2100005B (en)	1985-09-11	Force transducer
GB8309904D0 (en)	1983-05-18	Transducer
GB8411493D0 (en)	1984-06-13	Electro-acoustic transducer
GB2110901B (en)	1985-09-25	Electronstatic transducer
DE3269415D1 (en)	1986-04-03	Electroacoustic transducer
GB2144308B (en)	1986-09-17	Electro-acoustic transducer element
GB8427095D0 (en)	1984-12-05	Transducer
ZA811320B (en)	1982-03-31	Electro-acoustic transducer arrangements
AU538166B2 (en)	1984-08-02	Electroacoustic transducers
GB8316385D0 (en)	1983-07-20	Transducer
GB2151025B (en)	1987-10-07	Transducer
DE3162963D1 (en)	1984-05-10	Electroacoustic transducers
GB2094097B (en)	1985-06-05	Vibration transducer
JPS57192195A (en)	1982-11-26	Electric-acoustic transducer
GB2071961B (en)	1983-08-10	Electro-acoustic transducer
DE3273600D1 (en)	1986-11-06	Electrodynamic transducer