GB640824A - Improvements in and relating to cone diaphragm electro-acoustic apparatus - Google Patents
Improvements in and relating to cone diaphragm electro-acoustic apparatusInfo
- Publication number
- GB640824A GB640824A GB29820/45A GB2982045A GB640824A GB 640824 A GB640824 A GB 640824A GB 29820/45 A GB29820/45 A GB 29820/45A GB 2982045 A GB2982045 A GB 2982045A GB 640824 A GB640824 A GB 640824A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cone
- diaphragm
- flexible
- surround
- class
- 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
-
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
- H04R2231/003—Manufacturing aspects of the outer suspension of loudspeaker or microphone diaphragms or of their connecting aspects to said diaphragms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/021—Diaphragms comprising cellulose-like materials, e.g. wood, paper, linen
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/023—Diaphragms comprising ceramic-like materials, e.g. pure ceramic, glass, boride, nitride, carbide, mica and carbon materials
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/025—Diaphragms comprising polymeric materials
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/029—Diaphragms comprising fibres
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/204—Material aspects of the outer suspension of loudspeaker diaphragms
-
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
640,824. Diaphragms. MULLARD RADIO VALVE CO., Ltd., and KEDDIE, J. E. Nov. 8, 1945, No. 29820. [Class 40 (iv)] A diaphragm for a loudspeaker is of a continuous piece of woven fabric made of extruded or drawn thread or filaments, the cone being rendered substantially rigid by the application of a binder such as cellulose acetate, while the peripheral portion is left untreated to provide a flexible support. The threads are preferably of glass but use may be made of synthetic plastic materials. In the preferred form, the diaphragm is shaped to provide a central cone 11 with a toroidal surround 13 and the cone 11 and rim 14 are rendered rigid with dope while the surround 13 is left flexible. The centre of the diaphragm, with the speech coil former 9, is preferably mounted on a support of similar material comprising a disc of fabric suitably shaped and doped over the darkened portions 16, 19, leaving the intervening annulus flexible. Specifications 264,120, 310,127, [both in Class 40 (iv)], and 513,282 are referred to.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR957982D FR957982A (en) | 1945-11-08 | ||
BE482081D BE482081A (en) | 1945-11-08 | ||
GB29820/45A GB640824A (en) | 1945-11-08 | 1945-11-08 | Improvements in and relating to cone diaphragm electro-acoustic apparatus |
ES0181488A ES181488A1 (en) | 1945-11-08 | 1947-12-31 | AN ELECTROACUTICAL DEVICE PROVIDED WITH A CONE-SHAPED MEMBRANE, FOR EXAMPLE, A SPEAKER, MICROPHONE AND ANALOG APPARATUS |
US5991A US2502853A (en) | 1945-11-08 | 1948-02-03 | Woven fabric diaphragm with stiffened portions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB29820/45A GB640824A (en) | 1945-11-08 | 1945-11-08 | Improvements in and relating to cone diaphragm electro-acoustic apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB640824A true GB640824A (en) | 1950-07-26 |
Family
ID=10297703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29820/45A Expired GB640824A (en) | 1945-11-08 | 1945-11-08 | Improvements in and relating to cone diaphragm electro-acoustic apparatus |
Country Status (5)
Country | Link |
---|---|
US (1) | US2502853A (en) |
BE (1) | BE482081A (en) |
ES (1) | ES181488A1 (en) |
FR (1) | FR957982A (en) |
GB (1) | GB640824A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2454824C2 (en) * | 2008-03-05 | 2012-06-27 | Генелек Ой | Composite dynamic head of loud speaker |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB787424A (en) * | 1953-04-13 | 1957-12-11 | Whiteley Electrical Radio Comp | Improvements relating to loudspeakers and the like |
US2873813A (en) * | 1955-07-27 | 1959-02-17 | Hawley Products Co | Acoustic diaphragm and method of construction |
US2866515A (en) * | 1955-11-28 | 1958-12-30 | Robert C Hunter | Cone for loud-speaker assembly |
NL302559A (en) * | 1963-01-25 | |||
US3328537A (en) * | 1964-01-09 | 1967-06-27 | Hecht William | High frequency sound translating device |
US4100992A (en) * | 1974-08-12 | 1978-07-18 | Weber Louis Rehde | Loudspeaker |
EP0942625A3 (en) * | 1993-06-28 | 2002-05-15 | Matsushita Electric Industrial Co., Ltd. | Method for fabricating diaphragm-edge integral molding for speakers |
DE102006058369B4 (en) * | 2006-12-08 | 2014-01-23 | Sennheiser Electronic Gmbh & Co. Kg | Electroacoustic transducer |
RU2744770C1 (en) * | 2020-07-29 | 2021-03-15 | Сотис АГ | Electrodynamic drive for flat loudspeakers |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1729407A (en) * | 1927-04-05 | 1929-09-24 | Stevens Mfg Corp | Acoustic diaphragm |
US1843367A (en) * | 1929-02-04 | 1932-02-02 | Crosley Radio Corp | Diaphragm |
US2201059A (en) * | 1937-12-14 | 1940-05-14 | Philco Radio & Television Corp | Loud-speaker |
US2206517A (en) * | 1938-04-06 | 1940-07-02 | Fides Gmbh | Electroacoustic apparatus |
-
0
- FR FR957982D patent/FR957982A/fr not_active Expired
- BE BE482081D patent/BE482081A/xx unknown
-
1945
- 1945-11-08 GB GB29820/45A patent/GB640824A/en not_active Expired
-
1947
- 1947-12-31 ES ES0181488A patent/ES181488A1/en not_active Expired
-
1948
- 1948-02-03 US US5991A patent/US2502853A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2454824C2 (en) * | 2008-03-05 | 2012-06-27 | Генелек Ой | Composite dynamic head of loud speaker |
Also Published As
Publication number | Publication date |
---|---|
FR957982A (en) | 1950-03-02 |
US2502853A (en) | 1950-04-04 |
ES181488A1 (en) | 1948-07-01 |
BE482081A (en) |
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