GB237798A - Improvements relating to diaphragms for telephones and the like - Google Patents
Improvements relating to diaphragms for telephones and the likeInfo
- Publication number
- GB237798A GB237798A GB30786/24A GB3078624A GB237798A GB 237798 A GB237798 A GB 237798A GB 30786/24 A GB30786/24 A GB 30786/24A GB 3078624 A GB3078624 A GB 3078624A GB 237798 A GB237798 A GB 237798A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragms
- discs
- telephones
- improvements relating
- caoutchouc
- 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
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/08—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers separated by air or other fluid
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
237,798. Lakhovsky, G. Dec. 22, 1924. Diaphragms.-A diaphragm for sound emitting .or receiving apparatus is formed of two thin metallic discs a, b having ribs e, f, g which fit one in another, a layer c of oily or viscous material being enclosed between the discs a, b. The assembled discs may be framed in a ring of caoutchouc d or may have two rings of caoutchouc or other non-sonorous material placed on opposite sides thereof.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH589692X | 1924-05-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB237798A true GB237798A (en) | 1925-08-06 |
Family
ID=10313108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30786/24A Expired GB237798A (en) | 1924-05-26 | 1924-12-22 | Improvements relating to diaphragms for telephones and the like |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR589692A (en) |
GB (1) | GB237798A (en) |
-
1924
- 1924-11-27 FR FR589692D patent/FR589692A/en not_active Expired
- 1924-12-22 GB GB30786/24A patent/GB237798A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR589692A (en) | 1925-06-03 |
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