BE414989A - - Google Patents
Info
- Publication number
- BE414989A BE414989A BE414989DA BE414989A BE 414989 A BE414989 A BE 414989A BE 414989D A BE414989D A BE 414989DA BE 414989 A BE414989 A BE 414989A
- 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
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
- H04R2209/022—Aspects regarding the stray flux internal or external to the magnetic circuit, e.g. shielding, shape of magnetic circuit, flux compensation coils
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16261A US2029282A (en) | 1935-04-13 | 1935-04-13 | Magnetic circuit and construction thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE414989A true BE414989A (en:Method) |
Family
ID=21776210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE414989D BE414989A (en:Method) | 1935-04-13 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2029282A (en:Method) |
| BE (1) | BE414989A (en:Method) |
| FR (1) | FR804856A (en:Method) |
| GB (1) | GB473648A (en:Method) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2427571A (en) * | 1947-09-16 | Magnetic structure for electrical | ||
| US2458158A (en) * | 1942-11-25 | 1949-01-04 | Permoflux Corp | Magnetically shielded electrodynamic sound reproducer |
| DE898643C (de) * | 1943-01-16 | 1953-12-03 | Deutsche Edelstahlwerke Ag | Ringspaltmagnetsystem |
| US2438985A (en) * | 1945-02-26 | 1948-04-06 | Anthony A Ambrose | Electromagnet |
| US2524780A (en) * | 1945-07-07 | 1950-10-10 | Rola Company Inc | Pole piece centering arrangement for permanent magnet electrodynamic loudspeakers |
| BE469578A (en:Method) * | 1945-11-30 | |||
| US2501031A (en) * | 1945-11-30 | 1950-03-21 | Rca Corp | Magnetic field structure for dynamic loud-speakers and the like |
| US2534819A (en) * | 1947-02-27 | 1950-12-19 | Jensen Mfg Company | Magnetic structure for speakers |
| GB625591A (en) * | 1947-03-04 | 1949-06-30 | Paul Gustavus Adolphus Helmuth | Improvements in magnets |
| US2533498A (en) * | 1948-06-19 | 1950-12-12 | Donald G Munson | Magnet support for radio speakers |
| US2567365A (en) * | 1948-08-04 | 1951-09-11 | Bell Telephone Labor Inc | Polarized operator for telephone receivers |
| US2557080A (en) * | 1948-09-16 | 1951-06-19 | Dawson Samuel Edward | Magnetoelectric transducer for measurement of velocity and related values |
| US2517727A (en) * | 1948-12-02 | 1950-08-08 | Rola Company Inc | Permanent magnet structure for electrodynamic loud-speakers |
| US2754373A (en) * | 1952-08-22 | 1956-07-10 | Harry B Shaper | Miniature hearing-aid receiver |
| DE1036923B (de) * | 1954-06-11 | 1958-08-21 | Isophon Werke Ges Mit Beschrae | Befestigung des Membrankorbes bei Konuslautsprechern |
| US3247331A (en) * | 1954-07-30 | 1966-04-19 | Rca Corp | Magnetic structure for a loudspeaker |
| US3497638A (en) * | 1967-03-20 | 1970-02-24 | Ltv Ling Altec Inc | Explosion-proof acoustic device |
| US5532665A (en) * | 1994-01-21 | 1996-07-02 | Alliedsignal, Inc. | Low stress magnet interface |
| CN102026074A (zh) * | 2010-12-29 | 2011-04-20 | 瑞声声学科技(深圳)有限公司 | 微型换能器件 |
| US8958597B2 (en) | 2012-03-23 | 2015-02-17 | Coleridge Design Associates Llc | Speaker with voice coil and field coil |
-
0
- BE BE414989D patent/BE414989A/xx unknown
-
1935
- 1935-04-13 US US16261A patent/US2029282A/en not_active Expired - Lifetime
-
1936
- 1936-04-09 FR FR804856D patent/FR804856A/fr not_active Expired
- 1936-04-14 GB GB10741/36A patent/GB473648A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB473648A (en) | 1937-10-14 |
| US2029282A (en) | 1936-01-28 |
| FR804856A (fr) | 1936-11-04 |