FR2470512B1 - - Google Patents
Info
- Publication number
- FR2470512B1 FR2470512B1 FR8024592A FR8024592A FR2470512B1 FR 2470512 B1 FR2470512 B1 FR 2470512B1 FR 8024592 A FR8024592 A FR 8024592A FR 8024592 A FR8024592 A FR 8024592A FR 2470512 B1 FR2470512 B1 FR 2470512B1
- Authority
- FR
- France
- 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
- 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
- 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)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2946981A DE2946981C2 (de) | 1979-11-21 | 1979-11-21 | Elektroakustischer Wandler |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2470512A1 FR2470512A1 (fr) | 1981-05-29 |
FR2470512B1 true FR2470512B1 (fr) | 1984-05-18 |
Family
ID=6086571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8024592A Granted FR2470512A1 (fr) | 1979-11-21 | 1980-11-19 | Transducteur electroacoustique |
Country Status (4)
Country | Link |
---|---|
US (1) | US4379213A (fr) |
JP (1) | JPS5920237B2 (fr) |
DE (1) | DE2946981C2 (fr) |
FR (1) | FR2470512A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4616731A (en) * | 1984-03-02 | 1986-10-14 | Robinson James R | Speaker system |
DE4241212A1 (de) * | 1992-12-08 | 1994-06-09 | Nokia Deutschland Gmbh | Schwingspulenkontaktierung für Lautsprecher |
US5875255A (en) * | 1997-08-28 | 1999-02-23 | Campbell; Paul G. | High power electroacoustic speaker system having wide band frequency response |
AUPR317901A0 (en) | 2001-02-16 | 2001-03-15 | Arnstein, Barry | Electro-acoustic converter |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1690726A (en) * | 1927-04-23 | 1928-11-06 | holinger | |
DE679439C (de) * | 1935-04-10 | 1939-08-05 | Pertrix Chem Fab Akt Ges | Konuslautsprecher mit elektrodynamischem Antriebssystem |
BE437610A (fr) * | 1939-01-13 | 1940-07-09 | ||
US3424873A (en) * | 1964-07-15 | 1969-01-28 | Lincoln Walsh | Coherent-sound loudspeaker |
US3826333A (en) * | 1973-03-21 | 1974-07-30 | J Buckwalter | Baffle for a sound producing device |
US4064966A (en) * | 1976-03-11 | 1977-12-27 | Burton William D | Loudspeaker apparatus |
DE2709374C3 (de) * | 1977-03-01 | 1979-11-08 | Bm-Elektronik Meldtky Kg, 1000 Berlin | Elektroakustischer Wandler |
-
1979
- 1979-11-21 DE DE2946981A patent/DE2946981C2/de not_active Expired
-
1980
- 1980-11-19 FR FR8024592A patent/FR2470512A1/fr active Granted
- 1980-11-21 US US06/209,115 patent/US4379213A/en not_active Expired - Lifetime
- 1980-11-21 JP JP55163425A patent/JPS5920237B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS574692A (en) | 1982-01-11 |
US4379213A (en) | 1983-04-05 |
JPS5920237B2 (ja) | 1984-05-11 |
DE2946981C2 (de) | 1981-05-14 |
FR2470512A1 (fr) | 1981-05-29 |
DE2946981B1 (de) | 1980-10-02 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |