BE370732A - - Google Patents
Info
- Publication number
- BE370732A BE370732A BE370732DA BE370732A BE 370732 A BE370732 A BE 370732A BE 370732D A BE370732D A BE 370732DA BE 370732 A BE370732 A BE 370732A
- Authority
- BE
- Belgium
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
- 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR547840X | 1929-06-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE370732A true BE370732A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=8934455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE370732D BE370732A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1929-06-04 |
Country Status (5)
Families Citing this family (3)
| 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 |
|---|---|
| US1796335A (en) | 1931-03-17 |
| FR38677E (fr) | 1931-06-26 |
| FR40003E (fr) | 1932-03-21 |
| GB344290A (en) | 1931-03-05 |
| DE547840C (de) | 1932-04-07 |
| FR37934E (fr) | 1931-02-07 |
| GB346205A (en) | 1931-04-09 |
| FR38511E (fr) | 1931-06-13 |
| FR692095A (fr) | 1930-10-30 |