BE370732A - - Google Patents

Info

Publication number: BE370732A
Authority: BE; Belgium

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.)

1929-06-04

Publication of BE370732A publication Critical patent/BE370732A/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Multimedia (AREA)
Health & Medical Sciences (AREA)
Otolaryngology (AREA)
Diaphragms For Electromechanical Transducers (AREA)
Stringed Musical Instruments (AREA)

BE370732D 1929-06-04 BE370732A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR547840X		1929-06-04

Publications (1)

Publication Number	Publication Date
BE370732A true BE370732A (enrdf_load_stackoverflow)

Family

ID=8934455

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE370732D BE370732A (enrdf_load_stackoverflow)	1929-06-04

Country Status (5)

Country	Link
US (1)	US1796335A (enrdf_load_stackoverflow)
BE (1)	BE370732A (enrdf_load_stackoverflow)
DE (1)	DE547840C (enrdf_load_stackoverflow)
FR (5)	FR692095A (enrdf_load_stackoverflow)
GB (2)	GB344290A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2182823A (en) *	1985-11-07	1987-05-20	Midlen Trading Corp	Diaphragm and driver for a loudspeaker
CA1284837C (en) *	1987-06-18	1991-06-11	Highwood Audio Inc.	Audio transducer
EP1377115B1 (en) *	2002-06-24	2016-01-06	Panasonic Intellectual Property Management Co., Ltd.	Loudspeaker diaphragm

0
- BE BE370732D patent/BE370732A/xx unknown
1929
- 1929-06-04 FR FR692095D patent/FR692095A/fr not_active Expired
- 1929-08-26 FR FR37934D patent/FR37934E/fr not_active Expired
- 1929-09-25 DE DEL76298D patent/DE547840C/de not_active Expired
- 1929-12-16 FR FR38511D patent/FR38511E/fr not_active Expired
1930
- 1930-01-10 FR FR38677D patent/FR38677E/fr not_active Expired
- 1930-05-13 US US452008A patent/US1796335A/en not_active Expired - Lifetime
- 1930-05-14 GB GB14837/30A patent/GB344290A/en not_active Expired
- 1930-05-15 GB GB14987/30A patent/GB346205A/en not_active Expired
- 1930-09-25 FR FR40003D patent/FR40003E/fr not_active Expired

Also Published As

Publication number	Publication date
FR692095A (fr)	1930-10-30
US1796335A (en)	1931-03-17
GB344290A (en)	1931-03-05
GB346205A (en)	1931-04-09
FR40003E (fr)	1932-03-21
FR38677E (fr)	1931-06-26
FR37934E (fr)	1931-02-07
FR38511E (fr)	1931-06-13
DE547840C (de)	1932-04-07

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