BE469578A - - Google Patents
Info
- Publication number
- BE469578A BE469578A BE469578DA BE469578A BE 469578 A BE469578 A BE 469578A BE 469578D A BE469578D A BE 469578DA BE 469578 A BE469578 A BE 469578A
- 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
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US632065A US2501032A (en) | 1945-11-30 | 1945-11-30 | Permanent magnet assembly for electrodynamic loud-speakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE469578A true BE469578A (ru) |
Family
ID=24533932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE469578D BE469578A (ru) | 1945-11-30 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2501032A (ru) |
| BE (1) | BE469578A (ru) |
| ES (1) | ES175452A1 (ru) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB625591A (en) * | 1947-03-04 | 1949-06-30 | Paul Gustavus Adolphus Helmuth | Improvements in magnets |
| US2604551A (en) * | 1947-10-02 | 1952-07-22 | Magnavox Australia Pty Ltd | Magnetic unit with magnetically positioned pole piece for loudspeakers |
| US2772381A (en) * | 1951-06-25 | 1956-11-27 | Swing A Way Mfg Company | Magnetic lid lifter for can openers |
| US2761913A (en) * | 1953-02-18 | 1956-09-04 | Gen Dynamics Corp | Loudspeaker |
| US2964597A (en) * | 1954-12-10 | 1960-12-13 | Rca Corp | Loudspeaker magnetic field structure |
| US3092694A (en) * | 1959-02-16 | 1963-06-04 | Rca Corp | Loudspeaker |
| US3106670A (en) * | 1960-04-21 | 1963-10-08 | Rca Corp | Magnetic field structure for loudspeakers |
| US3801943A (en) * | 1971-06-16 | 1974-04-02 | J Bertagni | Electoacoustic transducers and electromagnetic assembly therefor |
| US3874665A (en) * | 1971-10-05 | 1975-04-01 | Mcculloch Corp | Ball putting cup and method of ejecting ball from same |
| US4635287A (en) * | 1983-10-19 | 1987-01-06 | Mutsuo Hirano | Audio-frequency electromechanical vibrator |
| USRE32785E (en) * | 1983-10-19 | 1988-11-15 | Sanden Corporation | Audio-frequency electromechanical vibrator |
| US4799266A (en) * | 1986-11-25 | 1989-01-17 | Kabushiki Kaisha Kenwood | Electroacoustic converter |
| US7031490B2 (en) * | 2002-03-26 | 2006-04-18 | T C Sounds Inc. | Speaker driver with detachable motor and basket |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1811367A (en) * | 1929-03-27 | 1931-06-23 | Magnavox Co | Loud speaker |
| US1864809A (en) * | 1930-01-08 | 1932-06-28 | Magnavox Co | Loud speaker |
| USRE22017E (en) * | 1931-01-05 | 1942-02-03 | Acoustic device | |
| GB372809A (en) * | 1931-02-04 | 1932-05-04 | Edgar Allen & Company Ltd | Improvements in or relating to permanent magnets |
| US1847702A (en) * | 1931-05-02 | 1932-03-01 | Bell Telephone Labor Inc | Sound translating device |
| GB389898A (en) * | 1931-11-03 | 1933-03-30 | Darwins Ltd | Improvements in or relating to permanent magnets |
| GB397617A (en) * | 1932-05-13 | 1933-08-31 | Everett Ross Dempster | Loud speakers |
| GB412552A (en) * | 1932-12-21 | 1934-06-21 | Everett Ross Dempster | Improvements in or relating to loud speakers |
| BE414989A (ru) * | 1935-04-13 | |||
| FR827276A (fr) * | 1937-01-07 | 1938-04-22 | Perfectionnements aux haut-parleurs électrodynamiques | |
| US2312238A (en) * | 1938-01-27 | 1943-02-23 | Rca Corp | Dynamic loud-speaker |
| GB552328A (en) * | 1941-12-04 | 1943-04-01 | Reslo Sound Equipment Ltd | Improvements in or relating to loud speakers and the like |
| US2395166A (en) * | 1942-12-24 | 1946-02-19 | Astatic Corp | Transducer |
-
0
- BE BE469578D patent/BE469578A/xx unknown
-
1945
- 1945-11-30 US US632065A patent/US2501032A/en not_active Expired - Lifetime
-
1946
- 1946-10-25 ES ES0175452A patent/ES175452A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2501032A (en) | 1950-03-21 |
| ES175452A1 (es) | 1946-12-01 |