GB1271539A - Diaphragm for loud speakers and method of making the same - Google Patents
Diaphragm for loud speakers and method of making the sameInfo
- Publication number
- GB1271539A GB1271539A GB62585/69A GB6258569A GB1271539A GB 1271539 A GB1271539 A GB 1271539A GB 62585/69 A GB62585/69 A GB 62585/69A GB 6258569 A GB6258569 A GB 6258569A GB 1271539 A GB1271539 A GB 1271539A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cloth
- resin
- diaphragm
- fused
- foamed
- 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
- H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
- H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
1,271,539. Loud-speaker diaphragms. FOSTER ELECTRIC CO. Ltd. 23 Dec., 1969 [22 Oct., 1969 (2)], No. 62585/69. Heading H4J A loud-speaker diaphragm has a foamed synthetic resin fused to one or both sides of a cloth. The cloth 4 (Fig. 4) has foamed resin 5 fused to it and may have a cloth insertion 7. A flat diaphragm (Fig. 2, not shown) has foamed resin fused on each side, except at the edge, which is corrugated. The cloth may be preimpregnated with a thermosetting resin (e.g. a phenolic urethane, polyester or epoxy resin). The foamed resin (e.g. a urethane, styrene, vinyl "A.B.S." or epoxy resin) may be cellular or collapsed. The cloth comprises yarns or rovings and may be of natural, synthetic or inorganic fibres and may be non-woven fabric.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8441769 | 1969-10-22 | ||
JP10038569 | 1969-10-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1271539A true GB1271539A (en) | 1972-04-19 |
Family
ID=26425455
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB62585/69A Expired GB1271539A (en) | 1969-10-22 | 1969-12-23 | Diaphragm for loud speakers and method of making the same |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2003815B1 (en) |
FR (1) | FR2067239B1 (en) |
GB (1) | GB1271539A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2711996A1 (en) * | 1976-03-19 | 1977-09-29 | Hugh Dudley Harwood | MEMBRANE FOR A SPEAKER |
GB2245451A (en) * | 1990-04-13 | 1992-01-02 | Sansui Electric Co | Diaphragm for speaker |
EP1788839A1 (en) | 2005-11-21 | 2007-05-23 | Pioneer Corporation | Speaker apparatus |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8301653A (en) * | 1983-05-10 | 1984-12-03 | Philips Nv | ELECTRO-ACOUSTIC CONVERTER WITH AN AIR-PERMISSIBLE MEMBRANE. |
US5162619A (en) * | 1987-07-03 | 1992-11-10 | Ewd Electronic-Werke Deutschland Gmbh | Diaphragm for a loudspeaker |
CN103686547A (en) | 2013-12-09 | 2014-03-26 | 歌尔声学股份有限公司 | Loudspeaker diaphragm and manufacturing method thereof |
-
1969
- 1969-12-23 GB GB62585/69A patent/GB1271539A/en not_active Expired
-
1970
- 1970-01-28 DE DE19702003815 patent/DE2003815B1/en active Pending
- 1970-04-06 FR FR707012393A patent/FR2067239B1/fr not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2711996A1 (en) * | 1976-03-19 | 1977-09-29 | Hugh Dudley Harwood | MEMBRANE FOR A SPEAKER |
GB2245451A (en) * | 1990-04-13 | 1992-01-02 | Sansui Electric Co | Diaphragm for speaker |
EP1788839A1 (en) | 2005-11-21 | 2007-05-23 | Pioneer Corporation | Speaker apparatus |
US8045745B2 (en) | 2005-11-21 | 2011-10-25 | Pioneer Corporation | Edge support for a speaker apparatus comprising multiple ridges |
Also Published As
Publication number | Publication date |
---|---|
FR2067239B1 (en) | 1974-03-01 |
FR2067239A1 (en) | 1971-08-20 |
DE2003815B1 (en) | 1971-04-22 |
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