BE729073A - - Google Patents
Info
- Publication number
- BE729073A BE729073A BE729073DA BE729073A BE 729073 A BE729073 A BE 729073A BE 729073D A BE729073D A BE 729073DA BE 729073 A BE729073 A BE 729073A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0273—Magnetic circuits with PM for magnetic field generation
- H01F7/0289—Transducers, loudspeakers, moving coil arrangements
-
- 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)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Hard Magnetic Materials (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6802907A NL6802907A (cs) | 1968-03-01 | 1968-03-01 | |
| NL6814825A NL6814825A (en) | 1968-10-16 | 1968-10-16 | Auxiliary magnet for permanent magnet loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE729073A true BE729073A (cs) | 1969-08-27 |
Family
ID=26644303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE729073D BE729073A (cs) | 1968-03-01 | 1969-02-27 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3593239A (cs) |
| BE (1) | BE729073A (cs) |
| CH (1) | CH494459A (cs) |
| DE (1) | DE1907969A1 (cs) |
| DK (1) | DK118903B (cs) |
| FR (1) | FR2003076A1 (cs) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783311A (en) * | 1970-12-19 | 1974-01-01 | Coral Audio Corp | Magnetic device for use in acoustic apparatus |
| IT958810B (it) * | 1971-05-07 | 1973-10-30 | Rank Organisation Ltd | Trasduttore elettroacustico parti colarmente per altoparlanti aurico lari e microfoni |
| US3953687A (en) * | 1973-11-05 | 1976-04-27 | Carbonneau Industries, Inc. | Magnetic structure for moving voice coil loudspeaker |
| US4063448A (en) * | 1976-08-25 | 1977-12-20 | Agar Instrumentation Inc. | Density meter coil assembly |
| US4187444A (en) * | 1978-01-19 | 1980-02-05 | Varian Associates, Inc. | Open-circuit magnet structure for cross-field tubes and the like |
| US4293741A (en) * | 1979-06-21 | 1981-10-06 | Digre Clifford B | Magnet assembly |
| USD267644S (en) | 1981-08-03 | 1983-01-18 | James B. Lansing Sound, Inc. | Loudspeaker magnet housing |
| JPS59139794A (ja) * | 1983-01-31 | 1984-08-10 | Ibuki Kogyo Kk | 漏洩磁場を打消したホ−ンスピ−カ− |
| US5075662A (en) * | 1989-11-14 | 1991-12-24 | The United States Of America As Represented By The Secretary Of The Army | Enhanced magnetic field within enclosed annular cavity |
| DE29512102U1 (de) * | 1995-07-27 | 1995-10-05 | Nokia (Deutschland) Gmbh, 75175 Pforzheim | Magnetsystem |
| US8603017B2 (en) * | 2005-03-07 | 2013-12-10 | American Medical Innovations, L.L.C. | Vibrational therapy assembly for treating and preventing the onset of deep venous thrombosis |
| US20080139979A1 (en) * | 2005-07-18 | 2008-06-12 | Juvent, Inc. | Vibrational therapy assembly adapted for removably mounting to a bed |
| US20070213179A1 (en) * | 2006-03-09 | 2007-09-13 | Juvent, Inc. | Mechanical loading apparatus having a signal modulating assembly |
| US8795210B2 (en) * | 2006-07-11 | 2014-08-05 | American Medical Innovations, L.L.C. | System and method for a low profile vibrating plate |
| TWI545973B (zh) * | 2014-01-29 | 2016-08-11 | Merry Electronics Co Ltd | External magnetic circuit improved structure |
| GB202402964D0 (en) | 2024-02-29 | 2024-04-17 | Pss Belgium Nv | Shaker |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1076838B (de) * | 1956-06-14 | 1960-03-03 | Deutsche Edelstahlwerke Ag | Dauermagnetsystem mit zentralem Eisenkern |
| NL232314A (cs) * | 1958-10-15 |
-
1969
- 1969-02-18 DE DE19691907969 patent/DE1907969A1/de active Pending
- 1969-02-24 US US801375A patent/US3593239A/en not_active Expired - Lifetime
- 1969-02-26 DK DK107969AA patent/DK118903B/da unknown
- 1969-02-26 CH CH290869A patent/CH494459A/de not_active IP Right Cessation
- 1969-02-27 BE BE729073D patent/BE729073A/xx unknown
- 1969-03-03 FR FR6905701A patent/FR2003076A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| US3593239A (en) | 1971-07-13 |
| DK118903B (da) | 1970-10-19 |
| CH494459A (de) | 1970-07-31 |
| DE1907969A1 (de) | 1969-09-25 |
| FR2003076A1 (cs) | 1969-11-07 |