NL90604C - - Google Patents
Info
- Publication number
- NL90604C NL90604C NL90604DA NL90604C NL 90604 C NL90604 C NL 90604C NL 90604D A NL90604D A NL 90604DA NL 90604 C NL90604 C NL 90604C
- Authority
- NL
- Netherlands
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
- H04R7/12—Non-planar diaphragms or cones
- H04R7/122—Non-planar diaphragms or cones 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB28558/51A GB722270A (en) | 1951-12-05 | 1951-12-05 | Improvements in or relating to loudspeakers having a conical diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL90604C true NL90604C (en:Method) |
Family
ID=10277516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL90604D NL90604C (en:Method) | 1951-12-05 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2732908A (en:Method) |
| DE (1) | DE940996C (en:Method) |
| FR (1) | FR1067372A (en:Method) |
| GB (1) | GB722270A (en:Method) |
| NL (1) | NL90604C (en:Method) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE559436A (en:Method) * | 1956-07-24 | |||
| DE1288146B (de) * | 1962-10-31 | 1969-01-30 | Siemens Ag | Elektroakustischer Wandler |
| US3742493A (en) * | 1971-12-06 | 1973-06-26 | Edwards Co | Audible signal apparatus |
| CN102118672A (zh) * | 2011-03-28 | 2011-07-06 | 苏州上声电子有限公司 | 扬声器振动膜片及扬声器 |
| US10194245B1 (en) | 2017-07-28 | 2019-01-29 | Bose Corporation | Acoustic transducer with vibration damping |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1298290A (en) * | 1916-05-02 | 1919-03-25 | Thomas Chalmers | Diaphragm for talking-machines. |
| US2124597A (en) * | 1934-01-31 | 1938-07-26 | Rca Corp | Acoustic device |
| US1743767A (en) * | 1927-04-13 | 1930-01-14 | Focht Nevin Seasholtz | Sound-reproducing diaphragm |
| DE592373C (de) * | 1931-04-10 | 1934-02-08 | Telefunken Gmbh | Grossflaechenmembran, die durch ueberdeckte Aussparungen zwischen Mitte und Rand in Zonen verschiedener Eigenschwingungszahl aufgeteilt ist |
| US1917309A (en) * | 1931-04-10 | 1933-07-11 | Siemens Ag | Diaphragm for acoustic apparatus |
| US1916223A (en) * | 1932-02-12 | 1933-07-04 | Bell Telephone Labor Inc | Sound translating device |
| US1990409A (en) * | 1932-02-19 | 1935-02-05 | Neville Athol Ernest | Acoustical diaphragm |
| US2022060A (en) * | 1934-08-29 | 1935-11-26 | Bell Telephone Labor Inc | Acoustic device |
| US2115924A (en) * | 1935-10-05 | 1938-05-03 | Magnavox Co | Acoustic apparatus |
| US2531634A (en) * | 1945-01-11 | 1950-11-28 | Athol E N Lawrance | Acoustical diaphragm with stiffening means |
| FR928176A (fr) * | 1946-05-15 | 1947-11-20 | Membrane pour haut-parleurs dynamiques | |
| NL73443C (en:Method) * | 1949-03-31 |
-
0
- NL NL90604D patent/NL90604C/xx active
- US US2732908D patent/US2732908A/en not_active Expired - Lifetime
-
1951
- 1951-12-05 GB GB28558/51A patent/GB722270A/en not_active Expired
-
1952
- 1952-12-02 FR FR1067372D patent/FR1067372A/fr not_active Expired
- 1952-12-03 DE DEG10394A patent/DE940996C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE940996C (de) | 1956-03-29 |
| FR1067372A (fr) | 1954-06-15 |
| GB722270A (en) | 1955-01-19 |
| US2732908A (en) | 1956-01-31 |