GB927545A - Improvements in magnet systems - Google Patents
Improvements in magnet systemsInfo
- Publication number
- GB927545A GB927545A GB34507/59A GB3450759A GB927545A GB 927545 A GB927545 A GB 927545A GB 34507/59 A GB34507/59 A GB 34507/59A GB 3450759 A GB3450759 A GB 3450759A GB 927545 A GB927545 A GB 927545A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnet
- gap
- housing
- permanent magnet
- magnetic material
- Prior art date
- 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
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- 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
- 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)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL232314 | 1958-10-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB927545A true GB927545A (en) | 1963-05-29 |
Family
ID=19751389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34507/59A Expired GB927545A (en) | 1958-10-15 | 1959-10-12 | Improvements in magnet systems |
Country Status (7)
Country | Link |
---|---|
US (1) | US3067366A (de) |
CH (1) | CH376149A (de) |
DE (1) | DE1176768B (de) |
ES (1) | ES252608A1 (de) |
FR (1) | FR1247967A (de) |
GB (1) | GB927545A (de) |
NL (2) | NL232314A (de) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3134057A (en) * | 1960-07-11 | 1964-05-19 | Sumitomo Metal Ind | Magnetic circuit for the deflection of flux leakage |
US3387707A (en) * | 1965-06-14 | 1968-06-11 | Westinghouse Electric Corp | Permanent magnet assembly |
US3478289A (en) * | 1968-02-12 | 1969-11-11 | Robert A Parnell | Permanent magnet assembly for a loudspeaker assembly |
DE1907969A1 (de) * | 1968-03-01 | 1969-09-25 | Philips Nv | Magnetsystem mit einem ringfoermigen permanenten Hauptmagnet mit einer Weicheisenober- und -unterplatte und einem Kern mit Hilfsmagnet |
FR2160353B1 (de) * | 1971-11-15 | 1976-06-11 | Knorr Bremse Gmbh | |
GB1360080A (en) * | 1971-12-22 | 1974-07-17 | Melnikov J A | Magnetic system |
US4323843A (en) * | 1978-12-06 | 1982-04-06 | Batham Ian N | Magnetic contamination detector |
DE3339720A1 (de) * | 1983-11-03 | 1985-05-15 | Magnetfabrik Bonn Gmbh Vorm. Gewerkschaft Windhorst, 5300 Bonn | Streuarmes topfmagnetsystem fuer magnet-dynamische lautsprecher bzw. akustische wandler |
US5142260A (en) * | 1991-03-08 | 1992-08-25 | Harman International Industries, Incorporated | Transducer motor assembly |
US5197104A (en) * | 1991-04-18 | 1993-03-23 | Josef Lakatos | Electrodynamic loudspeaker with electromagnetic impedance sensor coil |
GB9206014D0 (en) * | 1992-03-19 | 1992-04-29 | Oxford Instr Ltd | Magnet assembly |
JPH06233379A (ja) * | 1993-02-02 | 1994-08-19 | Kenwood Corp | スピーカ |
US5409236A (en) * | 1993-12-23 | 1995-04-25 | Therrien; Joel M. | Magnetic game or puzzle and method for making same |
US5802191A (en) | 1995-01-06 | 1998-09-01 | Guenther; Godehard A. | Loudspeakers, systems, and components thereof |
US5883967A (en) * | 1997-04-15 | 1999-03-16 | Harman International Industries, Incorporated | Slotted diaphragm loudspeaker |
US5879549A (en) * | 1997-09-13 | 1999-03-09 | Caiozza; Joseph | Filter cartridge magnetic attachment |
CN100348074C (zh) * | 1998-11-13 | 2007-11-07 | 戈德哈德A·冈瑟 | 用于稀土磁体扬声器的低成本马达结构 |
US8588457B2 (en) | 1999-08-13 | 2013-11-19 | Dr. G Licensing, Llc | Low cost motor design for rare-earth-magnet loudspeakers |
US6654476B1 (en) | 1999-08-13 | 2003-11-25 | Godehard A. Guenther | Low cost broad range loudspeaker and system |
US6611606B2 (en) * | 2000-06-27 | 2003-08-26 | Godehard A. Guenther | Compact high performance speaker |
CN1239046C (zh) * | 2000-06-27 | 2006-01-25 | G·A·格仑瑟 | 小型扬声器及*** |
US6993147B2 (en) * | 2000-08-14 | 2006-01-31 | Guenther Godehard A | Low cost broad range loudspeaker and system |
US6835048B2 (en) * | 2002-12-18 | 2004-12-28 | Varian, Inc. | Ion pump having secondary magnetic field |
US20080247582A1 (en) * | 2004-09-09 | 2008-10-09 | Guenther Godehard A | Loudspeaker and Systems |
US8189840B2 (en) | 2007-05-23 | 2012-05-29 | Soundmatters International, Inc. | Loudspeaker and electronic devices incorporating same |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2141595A (en) * | 1937-01-13 | 1938-12-27 | Cinaudagraph Corp | Magnet structure |
BE440964A (de) * | 1939-10-05 | |||
DE1011466B (de) * | 1955-06-18 | 1957-07-04 | Philips Patentverwaltung | Magnetsystem fuer elektroakustische Wandler |
DE1742108U (de) * | 1956-06-14 | 1957-03-28 | Deutsche Edelstahlwerke Ag | Dauermagnetsystem mit zentralem eisenkern, insbesondere fuer lautsprecher und tauchspulmikrofone. |
US2923783A (en) * | 1957-06-17 | 1960-02-02 | Stanley F White | Electro-acoustical transducer |
US2915681A (en) * | 1957-11-20 | 1959-12-01 | Indiana Steel Products Co | Magnet assemblies |
-
0
- NL NL111475D patent/NL111475C/xx active
- NL NL232314D patent/NL232314A/xx unknown
-
1959
- 1959-10-10 ES ES0252608A patent/ES252608A1/es not_active Expired
- 1959-10-10 DE DEN17371A patent/DE1176768B/de active Pending
- 1959-10-12 CH CH7929459A patent/CH376149A/de unknown
- 1959-10-12 US US845939A patent/US3067366A/en not_active Expired - Lifetime
- 1959-10-12 GB GB34507/59A patent/GB927545A/en not_active Expired
- 1959-10-13 FR FR807382A patent/FR1247967A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3067366A (en) | 1962-12-04 |
DE1176768B (de) | 1964-08-27 |
NL111475C (de) | |
NL232314A (de) | |
FR1247967A (fr) | 1960-12-09 |
ES252608A1 (es) | 1959-12-01 |
CH376149A (de) | 1964-03-31 |
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