GB307733A - Electrostatic acoustic device for transmitting and receiving purposes - Google Patents
Electrostatic acoustic device for transmitting and receiving purposesInfo
- Publication number
- GB307733A GB307733A GB25726/28A GB2572628A GB307733A GB 307733 A GB307733 A GB 307733A GB 25726/28 A GB25726/28 A GB 25726/28A GB 2572628 A GB2572628 A GB 2572628A GB 307733 A GB307733 A GB 307733A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- perforations
- perforated
- diaphragm
- leaf
- 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
- H04R19/00—Electrostatic transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
307,733. Newcombe-Hawley, Inc., (Assignees of Kyle, C). March 12, 1928, [Convention date]. Condenser telephones; diaphragms.-An electrostatic transmitter or reproducer comprises a perforated conductor plate A, a perforated dielectric plate B, a thin metal diaphragm C and a perforated clamping plate D. Bolts 5 surrounded by insulating sleeves 6 serve to clamp the parts together, the bolts being preferably arranged at staggered intervals and the large area diaphragm being divided up into a number of co-operating diaphragms of comparatively small area. The perforations 3 in the dielectric plate are concentric with and larger than the perforations 2 in the plate A whilst the perforations 4 in the plate D are concentric with and of substantially the same size as those in the dielectric plate:. The diaphragm may be of steel, brass, aluminium &c or of thin shim metal or leaf metal such as gold leaf, aluminium leaf &c. In the modification, Fig. 3. the dielectric member H is made flexible and unperforated and is clamped together with the flexible conductor J between the raised surfaces 17 on the plate G and the solid portions 20 of the clamping plate F.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US260832A US1745937A (en) | 1928-03-12 | 1928-03-12 | Acoustic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB307733A true GB307733A (en) | 1929-12-09 |
Family
ID=22990801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25726/28A Expired GB307733A (en) | 1928-03-12 | 1928-09-07 | Electrostatic acoustic device for transmitting and receiving purposes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1745937A (en) |
| DE (1) | DE501213C (en) |
| FR (1) | FR660569A (en) |
| GB (1) | GB307733A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5121791B2 (en) * | 1972-08-04 | 1976-07-05 | ||
| FR2423945A1 (en) * | 1978-03-31 | 1979-11-16 | Guisto Marc | Electrostatic transducer having membranes of metallised plastics film - for durable ultrasonic or transmission equipment |
-
1928
- 1928-03-12 US US260832A patent/US1745937A/en not_active Expired - Lifetime
- 1928-09-07 GB GB25726/28A patent/GB307733A/en not_active Expired
- 1928-09-09 DE DEN29304D patent/DE501213C/en not_active Expired
- 1928-09-18 FR FR660569D patent/FR660569A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1745937A (en) | 1930-02-04 |
| FR660569A (en) | 1929-07-12 |
| DE501213C (en) | 1930-06-30 |
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