BE377376A - - Google Patents
Info
- Publication number
- BE377376A BE377376A BE377376DA BE377376A BE 377376 A BE377376 A BE 377376A BE 377376D A BE377376D A BE 377376DA BE 377376 A BE377376 A BE 377376A
- 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
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Multimedia (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US428646A US1901631A (en) | 1930-02-15 | 1930-02-15 | Diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE377376A true BE377376A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=23699782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE377376D BE377376A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1930-02-15 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1901631A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
| BE (1) | BE377376A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2685935A (en) * | 1949-05-20 | 1954-08-10 | Hawley Products Co | Acoustic diaphragm |
| DE976429C (de) * | 1950-06-08 | 1963-09-19 | Emil Dr Podszus | Schaummembran fuer Lautsprecher und Verfahren zu ihrer Herstellung |
| DE974931C (de) * | 1950-06-08 | 1961-06-08 | Emil Dr Podszus | Aus erstarrtem Schaum bestehende Lautsprechermembran |
| DE2225710C3 (de) * | 1971-05-28 | 1975-12-04 | Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka | Membran für elektroakustische Wandler und Verfahren zu ihrer Herstellung |
-
0
- BE BE377376D patent/BE377376A/xx unknown
-
1930
- 1930-02-15 US US428646A patent/US1901631A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1901631A (en) | 1933-03-14 |