BE519367A - - Google Patents
Info
- Publication number
- BE519367A BE519367A BE519367DA BE519367A BE 519367 A BE519367 A BE 519367A BE 519367D A BE519367D A BE 519367DA BE 519367 A BE519367 A BE 519367A
- 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
-
- 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
- H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
-
- 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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2717047X | 1951-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE519367A true BE519367A (en) |
Family
ID=7997160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE519367D BE519367A (en) | 1951-12-07 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2717047A (en) |
| BE (1) | BE519367A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2956636A (en) * | 1956-06-11 | 1960-10-18 | Sipko L Boersma | Loudspeaker |
| US3095941A (en) * | 1957-05-09 | 1963-07-02 | Fauthal A Hassan | Loud speaker construction |
| US3074504A (en) * | 1961-05-25 | 1963-01-22 | Liberty Mfg Corp | Loud-speaker |
| US3111189A (en) * | 1962-01-12 | 1963-11-19 | Theodore R Scholl | Electrodynamic loudspeaker |
| US3154172A (en) * | 1962-07-19 | 1964-10-27 | Tibbetts Industries | Diaphragm and impedance means |
| US4718517A (en) * | 1986-02-27 | 1988-01-12 | Electro-Voice, Inc. | Loudspeaker and acoustic transformer therefor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR703234A (en) * | 1929-09-28 | 1931-04-25 | Electrical Res Prod Inc | Improvements to electro-acoustic transformation systems such as loudspeakers |
| BE402059A (en) * | 1933-03-17 | |||
| US2269284A (en) * | 1937-12-08 | 1942-01-06 | Rca Corp | Signal translating apparatus |
| US2231479A (en) * | 1938-08-24 | 1941-02-11 | Rca Corp | Signal translating apparatus |
| US2256270A (en) * | 1940-01-29 | 1941-09-16 | Philco Radio & Television Corp | Loud-speaker |
-
0
- BE BE519367D patent/BE519367A/xx unknown
-
1952
- 1952-12-03 US US323774A patent/US2717047A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2717047A (en) | 1955-09-06 |