FR2152746B1 - - Google Patents
Info
- Publication number
- FR2152746B1 FR2152746B1 FR7231813A FR7231813A FR2152746B1 FR 2152746 B1 FR2152746 B1 FR 2152746B1 FR 7231813 A FR7231813 A FR 7231813A FR 7231813 A FR7231813 A FR 7231813A FR 2152746 B1 FR2152746 B1 FR 2152746B1
- Authority
- FR
- France
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/041—Centering
- H04R9/042—Centering by pressurised air
-
- 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)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8112471U JPS512601Y2 (enExample) | 1971-09-07 | 1971-09-07 | |
| JP6912271A JPS5245216B2 (enExample) | 1971-09-07 | 1971-09-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2152746A1 FR2152746A1 (enExample) | 1973-04-27 |
| FR2152746B1 true FR2152746B1 (enExample) | 1978-07-07 |
Family
ID=26410307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7231813A Expired FR2152746B1 (enExample) | 1971-09-07 | 1972-09-07 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3804994A (enExample) |
| DE (1) | DE2243745A1 (enExample) |
| FR (1) | FR2152746B1 (enExample) |
| GB (1) | GB1402180A (enExample) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS559039Y2 (enExample) * | 1974-05-14 | 1980-02-27 | ||
| TW464150U (en) * | 2000-06-28 | 2001-11-11 | Deccon Company Ltd | Drum paper having composite-layered edge |
| RU2582158C2 (ru) * | 2013-10-16 | 2016-04-20 | Александр Васильевич Дегтярев | Громкоговоритель. |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1613609A (en) * | 1923-06-05 | 1927-01-11 | Western Electric Co | Acoustic device |
| GB320647A (en) * | 1928-07-18 | 1929-10-18 | Frederick William Lanchester | Improvements in moving coil loud speakers |
-
1972
- 1972-08-11 US US00279913A patent/US3804994A/en not_active Expired - Lifetime
- 1972-08-18 GB GB3853072A patent/GB1402180A/en not_active Expired
- 1972-09-06 DE DE2243745A patent/DE2243745A1/de active Pending
- 1972-09-07 FR FR7231813A patent/FR2152746B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1402180A (en) | 1975-08-06 |
| DE2243745A1 (de) | 1973-03-15 |
| FR2152746A1 (enExample) | 1973-04-27 |
| US3804994A (en) | 1974-04-16 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |