GB237878A - Improvements in diaphragms for acoustic apparatus - Google Patents
Improvements in diaphragms for acoustic apparatusInfo
- Publication number
- GB237878A GB237878A GB15131/25A GB1513125A GB237878A GB 237878 A GB237878 A GB 237878A GB 15131/25 A GB15131/25 A GB 15131/25A GB 1513125 A GB1513125 A GB 1513125A GB 237878 A GB237878 A GB 237878A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- diaphragms
- ring
- edge
- axis
- 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
- H04R7/12—Non-planar diaphragms or cones
-
- 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
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
237,878. Western Electric Co., Ltd., (Assignees of Lane, C. E.). July 30, 1924, [Convention date]. Loud - speakers; magnetic instruments; diaphragms. - A large direct acting conical diaphragm has an elliptic periphery. Preferably, the diaphragm is formed of two conical surfaces 6, 8 truncated obliquely to their axes so that each periphery is an ellipse. The edge of the surface 8 abuts against the inner portion of the surface 6 so that the edge 5 of the diaphragm is free to vibrate. The diaphragm is supported on a ring 13 at an opening in the rear face placed at right-angles to the axis. The ring 13 is carried by a standard 9 which also carries a bracket 12 for the telephone mechanism, the actuating rod 11 being along the axis of the front cone 6. This cone is formed from sheet material but may be in two sections 6, 7 the former of hard surfaced blotting paper and the latter of lighter and stiffer paper.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US729009A US1913451A (en) | 1924-07-30 | 1924-07-30 | Acoustic apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB237878A true GB237878A (en) | 1926-07-22 |
Family
ID=24929199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15131/25A Expired GB237878A (en) | 1924-07-30 | 1925-06-10 | Improvements in diaphragms for acoustic apparatus |
Country Status (5)
Country | Link |
---|---|
US (1) | US1913451A (en) |
DE (1) | DE556082C (en) |
FR (1) | FR600923A (en) |
GB (1) | GB237878A (en) |
NL (1) | NL18435C (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2662606A (en) * | 1950-01-31 | 1953-12-15 | Rca Corp | Elliptical conoidal sound reproducing diaphragm |
-
1924
- 1924-07-30 US US729009A patent/US1913451A/en not_active Expired - Lifetime
-
1925
- 1925-06-10 GB GB15131/25A patent/GB237878A/en not_active Expired
- 1925-06-17 NL NL30507A patent/NL18435C/xx active
- 1925-06-28 DE DEI26337D patent/DE556082C/en not_active Expired
- 1925-07-20 FR FR600923D patent/FR600923A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL18435C (en) | 1928-08-15 |
US1913451A (en) | 1933-06-13 |
FR600923A (en) | 1926-02-18 |
DE556082C (en) | 1932-08-04 |
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