GB353030A - Improvements in or relating to acoustic devices such as loud speakers - Google Patents
Improvements in or relating to acoustic devices such as loud speakersInfo
- Publication number
- GB353030A GB353030A GB19317/31A GB1931731A GB353030A GB 353030 A GB353030 A GB 353030A GB 19317/31 A GB19317/31 A GB 19317/31A GB 1931731 A GB1931731 A GB 1931731A GB 353030 A GB353030 A GB 353030A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- loud
- class
- relating
- speaker
- 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
-
- 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
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
353,030. L o u d - s p e a k e r s ; d i a - phragms. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of Smythe, E. H. ; Evanston, Illinois, U.S.A.) April 16, 1930, No. 19317/31. Divided on 353,016. Drawings to Specification. [Class 40 (iv).] An acoustic device, such as a loud-speaker, comprising a flat tensioned diaphragm of sufficiently large size to act as a directly acting sound radiator and actuated by means attached directly thereto, has the diaphragm provided with regions of special extensibility, preferably in the form of transverse corrugations, for tensioning it uniformly. The loud-speaker described and shown is of a similar construction to that described in Specification 290,239, [Class 40 (iv), Telephones &c.], the diaphragm being provided with transverse corrugations over its whole surface or at its end portions. Specification 353,016 also is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US353030XA | 1929-04-20 | 1929-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB353030A true GB353030A (en) | 1931-07-16 |
Family
ID=21881815
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19317/31A Expired GB353030A (en) | 1929-04-20 | 1930-04-16 | Improvements in or relating to acoustic devices such as loud speakers |
| GB12097/30A Expired GB353016A (en) | 1929-04-20 | 1930-04-16 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12097/30A Expired GB353016A (en) | 1929-04-20 | 1930-04-16 |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB353030A (en) |
-
1930
- 1930-04-16 GB GB19317/31A patent/GB353030A/en not_active Expired
- 1930-04-16 GB GB12097/30A patent/GB353016A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB353016A (en) | 1931-07-16 |
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