FR638392A - Loudspeaker without horn - Google Patents
Loudspeaker without hornInfo
- Publication number
- FR638392A FR638392A FR638392DA FR638392A FR 638392 A FR638392 A FR 638392A FR 638392D A FR638392D A FR 638392DA FR 638392 A FR638392 A FR 638392A
- Authority
- FR
- France
- Prior art keywords
- horn
- loudspeaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE293414X | 1927-07-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR638392A true FR638392A (en) | 1928-05-23 |
Family
ID=6079132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR638392D Expired FR638392A (en) | 1927-07-06 | 1927-07-28 | Loudspeaker without horn |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE343797A (en) |
FR (1) | FR638392A (en) |
GB (1) | GB293414A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2863520A (en) * | 1955-03-11 | 1958-12-09 | Gen Dynamics Corp | Loudspeaker cone rim treatment |
US9277324B2 (en) | 2013-12-19 | 2016-03-01 | Apple Inc. | Three part membrane speaker |
-
0
- BE BE343797D patent/BE343797A/xx unknown
-
1927
- 1927-07-28 FR FR638392D patent/FR638392A/en not_active Expired
- 1927-12-02 GB GB32592/27A patent/GB293414A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE343797A (en) | |
GB293414A (en) | 1929-03-04 |
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