BE479149A - - Google Patents
Info
- Publication number
- BE479149A BE479149A BE479149DA BE479149A BE 479149 A BE479149 A BE 479149A BE 479149D A BE479149D A BE 479149DA BE 479149 A BE479149 A BE 479149A
- 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
- 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
- H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US471576A US2371951A (en) | 1943-01-07 | 1943-01-07 | Double diaphragm loud-speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE479149A true BE479149A (en:Method) |
Family
ID=23872155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE479149D BE479149A (en:Method) | 1943-01-07 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2371951A (en:Method) |
| BE (1) | BE479149A (en:Method) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2565069A (en) * | 1946-03-30 | 1951-08-21 | Rola Company Inc | Loud-speaker of the double diaphragm type |
| US2568883A (en) * | 1947-03-24 | 1951-09-25 | Altec Lansing Corp | Loud-speaker with expanding horn unit |
| US2590439A (en) * | 1948-05-12 | 1952-03-25 | Star Electronics Inc | Push-pull resistance type phonograph pickup |
| US2775653A (en) * | 1950-11-16 | 1956-12-25 | Holmberg & Co | Moving coil diaphragms for electrodynamic listening apparatus |
| US3236958A (en) * | 1961-04-25 | 1966-02-22 | Electronic Res Associates Inc | Loudspeaker system |
| US3350513A (en) * | 1964-06-22 | 1967-10-31 | Alfred H Roberts | Cone loudspeakers |
| DE3603537A1 (de) * | 1986-02-05 | 1987-08-06 | Pfleid Wohnraumakustik Gmbh | Breitbandlautsprecher |
| ES292736Y (es) * | 1986-03-05 | 1987-03-01 | Plastmetal, S.A. | Altavoz dinamico para alarmas perfeccionado |
| USD943551S1 (en) * | 2019-05-23 | 2022-02-15 | Tymphany Acoustic Technology (Huizhou) Co., Ltd. | Diaphragm for loudspeaker |
| US11553272B2 (en) | 2020-09-30 | 2023-01-10 | Paradigm Electronics Inc. | Loudspeaker with mechanical resonance mitigation |
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0
- BE BE479149D patent/BE479149A/xx unknown
-
1943
- 1943-01-07 US US471576A patent/US2371951A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2371951A (en) | 1945-03-20 |