BE623239A - - Google Patents
Info
- Publication number
- BE623239A BE623239A BE623239DA BE623239A BE 623239 A BE623239 A BE 623239A BE 623239D A BE623239D A BE 623239DA BE 623239 A BE623239 A BE 623239A
- Authority
- BE
- Belgium
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/10—Applying counter-pressure during expanding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/755—Membranes, diaphragms
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Multimedia (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT746461A AT228860B (de) | 1961-10-04 | 1961-10-04 | Schaumstoff-Membrane für Schallwandler |
| AT749561A AT227807B (de) | 1961-10-05 | 1961-10-05 | Schallwandler für Diktiergeräte |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE623239A true BE623239A (US20030220297A1-20031127-C00009.png) |
Family
ID=25603855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE623239D BE623239A (US20030220297A1-20031127-C00009.png) | 1961-10-04 |
Country Status (6)
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3351719A (en) * | 1964-02-05 | 1967-11-07 | Electronic Res Associates Inc | Loudspeaker assembly |
| DE1299041B (de) * | 1966-04-06 | 1969-07-10 | Nippon Gakki Co Ltd Seizo Kabu | Membran fuer Flachlautsprecher |
| AT274080B (de) * | 1967-07-05 | 1969-09-10 | Philips Nv | Schallwandler mit einer Schaumstoffmembran |
| US3708035A (en) * | 1967-11-30 | 1973-01-02 | Nippon Musical Instruments Mfg | Diaphragm for loudspeakers |
| US3483946A (en) * | 1967-12-30 | 1969-12-16 | Nippon Musical Instruments Mfg | Loudspeaker |
| DE1815694C2 (de) * | 1968-12-19 | 1971-02-18 | Manger J W | Elektrodynamisches Wandlersystem |
| US3767004A (en) * | 1971-03-19 | 1973-10-23 | A Liebscher | Loudspeakers |
| US3740496A (en) * | 1971-11-08 | 1973-06-19 | Industrial Research Prod Inc | Diaphragm assembly for electret transducer |
| USD244779S (en) * | 1975-02-20 | 1977-06-21 | Nihon Atsudenki Kabushiki Kaisha | Microphone |
| USD244780S (en) * | 1975-02-25 | 1977-06-21 | Nihon Atsudenki Kabushiki Kaisha | Microphone |
| USD244700S (en) * | 1976-06-28 | 1977-06-14 | Dictaphone Corporation | Remote control microphone or similar article |
| NL8200690A (nl) * | 1982-02-22 | 1983-09-16 | Philips Nv | Luidsprekermembraan bevattende een laag van polymethacrylimideschuim. |
| US4635750A (en) * | 1985-06-03 | 1987-01-13 | Sharp Kabushiki Kaisha | Loudspeaker diaphragm |
| DE3831706A1 (de) * | 1988-09-17 | 1990-03-22 | Bayer Ag | Membran fuer lautsprecher |
| AT405997B (de) | 1997-04-30 | 2000-01-25 | Akg Acoustics Gmbh | Elektroakustischer wandler |
| GB2403091B (en) * | 2003-06-18 | 2006-08-09 | B & W Loudspeakers | Diaphragms for loudspeaker drive units |
| DE102004061314A1 (de) * | 2004-12-20 | 2006-07-06 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Lautsprechermemebran und Verfahren zum Herstellen einer Lautsprechermembran |
| CN107431862B (zh) * | 2015-02-05 | 2020-12-25 | 伊戈声学制造有限责任公司 | 集成音圈和锥形组件及其制造方法 |
| USD830346S1 (en) * | 2017-05-15 | 2018-10-09 | Ching-Wen Chen | Telephone type computer microphone |
| USD994647S1 (en) * | 2021-08-31 | 2023-08-08 | Ohma World 2 Inc. | Microphone |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE886758C (de) * | 1953-07-02 | Emil Dr Podszus | Membran fuer Lautsprecher mit Hohlraumgefuege | |
| GB596893A (en) * | 1945-08-03 | 1948-01-13 | Cossor Ltd A C | Improvements relating to acoustic reproducers |
| US1918422A (en) * | 1926-06-22 | 1933-07-18 | United Res Corp | Sound-reproducing device |
| DE900228C (de) * | 1937-01-20 | 1953-12-21 | Dr Emil Podszus | Membran grosser Steifigkeit fuer Tonwiedergabe |
| US2297218A (en) * | 1937-04-24 | 1942-09-29 | Hans E Henrich | Loud-speaker |
| GB513289A (en) * | 1937-12-18 | 1939-10-09 | Helmut Sell | Diaphragm for receiving or reproducing sound vibrations and method for its manufacture |
| DE974931C (de) * | 1950-06-08 | 1961-06-08 | Emil Dr Podszus | Aus erstarrtem Schaum bestehende Lautsprechermembran |
| DE972185C (de) * | 1950-10-18 | 1959-06-04 | Emil Dr Podszus | Membran mit Schaumstruktur fuer Lautsprecher |
| US2905260A (en) * | 1955-02-24 | 1959-09-22 | Muter Company | Loud speaker diaphragm |
| US2926741A (en) * | 1958-04-28 | 1960-03-01 | Lab Equipment Corp | Speaker |
| US3035132A (en) * | 1958-07-25 | 1962-05-15 | Akustische Und Kino Gerate Ges | Switching device combined with sound transducer |
| US3052785A (en) * | 1958-08-16 | 1962-09-04 | Herrmann Gunter | Sound recording machines |
-
0
- BE BE623239D patent/BE623239A/xx unknown
- NL NL283889D patent/NL283889A/xx unknown
-
1962
- 1962-06-20 DE DEA40497A patent/DE1172731B/de active Pending
- 1962-06-20 DE DEA40496A patent/DE1172730B/de active Pending
- 1962-08-21 US US218240A patent/US3222463A/en not_active Expired - Lifetime
- 1962-09-03 GB GB33751/62A patent/GB1017080A/en not_active Expired
- 1962-10-03 CH CH1162362A patent/CH412013A/de unknown
- 1962-10-03 GB GB37475/62A patent/GB968951A/en not_active Expired
- 1962-10-04 US US228335A patent/US3172498A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE1172731B (de) | 1964-06-25 |
| NL283889A (US20030220297A1-20031127-C00009.png) | |
| US3172498A (en) | 1965-03-09 |
| DE1172730B (de) | 1964-06-25 |
| US3222463A (en) | 1965-12-07 |
| GB968951A (en) | 1964-09-09 |
| GB1017080A (en) | 1966-01-12 |
| CH412013A (de) | 1966-04-30 |
