GB333323A - Improvements in acoustical apparatus employing sound-resonant diaphragms - Google Patents
Improvements in acoustical apparatus employing sound-resonant diaphragmsInfo
- Publication number
- GB333323A GB333323A GB1617629A GB1617629A GB333323A GB 333323 A GB333323 A GB 333323A GB 1617629 A GB1617629 A GB 1617629A GB 1617629 A GB1617629 A GB 1617629A GB 333323 A GB333323 A GB 333323A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- apparatus employing
- diaphragms
- teeth
- employing sound
- 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
Abstract
333,323. Soc. Franþaise Radio Electrique, and Bernard, M. May 25, 1929. Diaphragms.-The diaphragm 1, Fig. 1, is supported by teeth 3 formed in the inner edge of an annular spring metal rim 5, Fig. 3. The diaphragm may have a cylindrical periphery 2, Fig. 1, upon which an acoustically insulating material 4 such as felt is straddled. The teeth 3, Fig. 4, may be disposed alternately on opposite sides of the diaphragm, gripping the diaphragm through soft material. The diaphragm is preferably of drawing paper, of thickness 20 to 30 hundreths of a millimetre and has a cone angle of 90‹ to 110‹. It may also be reinforced by superposed portions 7, 8, Fig. 4. Two cones, with apices connected and in opposition, may be mounted by the described means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1617629A GB333323A (en) | 1929-05-25 | 1929-05-25 | Improvements in acoustical apparatus employing sound-resonant diaphragms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1617629A GB333323A (en) | 1929-05-25 | 1929-05-25 | Improvements in acoustical apparatus employing sound-resonant diaphragms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB333323A true GB333323A (en) | 1930-08-14 |
Family
ID=10072547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1617629A Expired GB333323A (en) | 1929-05-25 | 1929-05-25 | Improvements in acoustical apparatus employing sound-resonant diaphragms |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB333323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1078174B (en) * | 1956-02-25 | 1960-03-24 | Dr Emil Podszus | Suspension for speaker cones with special damping |
-
1929
- 1929-05-25 GB GB1617629A patent/GB333323A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1078174B (en) * | 1956-02-25 | 1960-03-24 | Dr Emil Podszus | Suspension for speaker cones with special damping |
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