BE345838A - - Google Patents
Info
- Publication number
- BE345838A BE345838A BE345838DA BE345838A BE 345838 A BE345838 A BE 345838A BE 345838D A BE345838D A BE 345838DA BE 345838 A BE345838 A BE 345838A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers
- H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/26—Damping by means acting directly on free portion of diaphragm or cone
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US190423A US1726105A (en) | 1927-05-11 | 1927-05-11 | Acoustic device |
| US190484A US1866603A (en) | 1927-05-11 | 1927-05-11 | Acoustic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE345838A true BE345838A (https=) |
Family
ID=26886097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE345838D BE345838A (https=) | 1927-05-11 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE345838A (https=) |
| FR (2) | FR644552A (https=) |
| GB (2) | GB290235A (https=) |
| NL (1) | NL25012C (https=) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2474848B (en) * | 2009-10-27 | 2014-05-28 | Michael Peter Cooke | Loudspeaker |
-
0
- NL NL25012D patent/NL25012C/xx active
- BE BE345838D patent/BE345838A/xx unknown
-
1927
- 1927-09-23 FR FR644552D patent/FR644552A/fr not_active Expired
- 1927-10-13 GB GB2722827A patent/GB290235A/en not_active Expired
-
1928
- 1928-02-11 GB GB436628A patent/GB290239A/en not_active Expired
- 1928-04-11 FR FR35192D patent/FR35192E/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB290235A (en) | 1928-06-14 |
| NL25012C (https=) | |
| FR644552A (fr) | 1928-10-10 |
| FR35192E (fr) | 1929-12-17 |
| GB290239A (en) | 1929-05-13 |