FR946542A - Convertisseurs électro-acoustiques - Google Patents

Convertisseurs électro-acoustiques

Info

Publication number: FR946542A
Authority: FR; France
Prior art keywords: electro; acoustic converters; converters; acoustic
Prior art date: 1946-10-19
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

Other languages

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.)

AT&T Corp

Original Assignee

Western Electric Co Inc

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.)

1946-10-19

Filing date

1947-05-12

Publication date

1949-06-07

1947-05-12 Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc

1949-06-07 Application granted granted Critical

1949-06-07 Publication of FR946542A publication Critical patent/FR946542A/fr

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type

Landscapes

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

FR946542D 1946-10-19 1947-05-12 Convertisseurs électro-acoustiques Expired FR946542A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US704483A US2566849A (en)	1946-10-19	1946-10-19	Electroacoustic transducer

Publications (1)

Publication Number	Publication Date
FR946542A true FR946542A (fr)	1949-06-07

Family

ID=24829716

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR946542D Expired FR946542A (fr)	1946-10-19	1947-05-12	Convertisseurs électro-acoustiques

Country Status (5)

Country	Link
US (1)	US2566849A (de)
BE (1)	BE473856A (de)
FR (1)	FR946542A (de)
GB (1)	GB646164A (de)
NL (1)	NL71172C (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5245892A (en) *	1975-10-09	1977-04-11	Seikosha Co Ltd	Sound genertor equipment

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1455745A (en) *	1919-05-09	1923-05-15	Henry C Egerton	Diaphragm for dictaphones, etc
US1331469A (en) *	1919-06-25	1920-02-17	Stewart Gatter L	Telephone-receiver
US1708943A (en) *	1921-09-22	1929-04-16	Western Electric Co	Acoustic device
US1439785A (en) *	1922-04-20	1922-12-26	Eisemann Magneto Corp	Telephone receiver of the watchcase type
US1830160A (en) *	1928-03-19	1931-11-03	French Electric Company	Telephone receiver
US1800573A (en) *	1929-01-12	1931-04-14	Skala Res Lab Inc	Diaphragm
USRE22499E (en) *	1932-12-24	1944-06-20		Bone conduction heabing-aid
US2003908A (en) *	1934-04-25	1935-06-04	Bell Telephone Labor Inc	Acoustic device
US2044608A (en) *	1935-05-03	1936-06-16	Du Pont Viscoloid Co	Diaphragm for electrical reproduction of sound
US2170571A (en) *	1936-08-12	1939-08-22	Bell Telephone Labor Inc	Acoustic device
US2141595A (en) *	1937-01-13	1938-12-27	Cinaudagraph Corp	Magnet structure
US2249160A (en) *	1939-05-19	1941-07-15	Bell Telephone Labor Inc	Acoustic device
BE479953A (de) *	1940-11-29
US2395166A (en) *	1942-12-24	1946-02-19	Astatic Corp	Transducer
US2404727A (en) *	1944-12-14	1946-07-23	Du Pont	Dissolving of polymers

0
- NL NL71172D patent/NL71172C/xx active
- BE BE473856D patent/BE473856A/xx unknown
1946
- 1946-10-19 US US704483A patent/US2566849A/en not_active Expired - Lifetime
1947
- 1947-05-12 FR FR946542D patent/FR946542A/fr not_active Expired
- 1947-10-16 GB GB27761/47A patent/GB646164A/en not_active Expired

Also Published As

Publication number	Publication date
US2566849A (en)	1951-09-04
BE473856A (de)
NL71172C (de)
GB646164A (en)	1950-11-15

Publication	Publication Date	Title
FR946579A (fr)	1949-06-08	Traducteurs électro-acoustiques
FR946542A (fr)	1949-06-07	Convertisseurs électro-acoustiques
AT174006B (de)	1953-02-25	Firngleiter
FI22251A (fi)	1947-07-17	Fågelskrämma
FI21718A (fi)	1946-12-09	Limningspress
FI22245A (fi)	1947-07-17	Vedklyvningsmaskin
FI21742A (fi)	1946-12-09	Dörrgångjärn
FR938087A (fr)	1948-09-03	Transformateur électro-acoustique
ES175108A2 (es)	1946-12-16	Mejoras
ES13495Y (es)	1947-03-01	Alpargata
ES13448Y (es)	1947-03-01	Alpargata-bota
AT177570B (de)	1954-02-10	Episkop
ES13627Y (es)	1953-06-01	Caja-envase
FI21507A (fi)	1946-09-10	Högfrekvensjärnkärnsspole
FI22232A (fi)	1947-07-17	Beklädd bågsvetsningselektrod
FI21579A (fi)	1946-10-15	Befordringsanordning
FI21575A (fi)	1946-10-15	Elektriskt säkringselement
FI21569A (fi)	1946-10-15	Bandfiltreringsanordning
FI21560A (fi)	1946-09-10	Suksiside
FI21559A (fi)	1946-09-10	Suksiside
FI21557A (fi)	1946-09-10	Kardmaskin
FI21553A (fi)	1946-09-10	Regellås
FI21548A (fi)	1946-09-10	Trycksmörjspruta
FI21546A (fi)	1946-09-10	Lockfågel
FI21606A (fi)	1946-10-15	Blandningskran