BE505468A - - Google Patents
Info
- Publication number
- BE505468A BE505468A BE505468DA BE505468A BE 505468 A BE505468 A BE 505468A BE 505468D A BE505468D A BE 505468DA BE 505468 A BE505468 A BE 505468A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
- H01F1/0311—Compounds
- H01F1/0313—Oxidic compounds
- H01F1/0315—Ferrites
-
- 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
- H01F7/021—Construction of PM
-
- 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
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Hard Magnetic Materials (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL313462X | 1951-04-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE505468A true BE505468A (de) |
Family
ID=19783713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE505468D BE505468A (de) | 1951-04-23 |
Country Status (5)
Country | Link |
---|---|
US (1) | US2698917A (de) |
BE (1) | BE505468A (de) |
CH (1) | CH313462A (de) |
FR (1) | FR1041525A (de) |
GB (1) | GB708136A (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1011466B (de) * | 1955-06-18 | 1957-07-04 | Philips Patentverwaltung | Magnetsystem fuer elektroakustische Wandler |
DE1020098B (de) * | 1955-10-03 | 1957-11-28 | Stepper & Co | Bremsmagnetanordnung fuer eine Laeuferscheibe, insbesondere von Elektrizitaetszaehlern |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2778803A (en) * | 1953-02-06 | 1957-01-22 | Aerovox Corp | Magnetically hard materials |
US2943246A (en) * | 1956-02-28 | 1960-06-28 | Howard C Riordan | Magnetic detachable holding device |
US2920253A (en) * | 1956-03-06 | 1960-01-05 | Engineered Products Company | Magnetic catch |
US2972745A (en) * | 1956-04-17 | 1961-02-21 | Hamilton Watch Co | Electric wrist watch |
US2966106A (en) * | 1957-01-05 | 1960-12-27 | Schneider Co Optische Werke | Magnetic system for producing arcuate motions |
US2923783A (en) * | 1957-06-17 | 1960-02-02 | Stanley F White | Electro-acoustical transducer |
US3095525A (en) * | 1958-01-20 | 1963-06-25 | Crucible Steel Co America | Permanent magnet assembly |
US3090107A (en) * | 1958-07-24 | 1963-05-21 | Sylvania Electric Prod | Method of making a permanent magnet |
US3022398A (en) * | 1959-05-15 | 1962-02-20 | Fluidwick Company Inc | Electric control device |
US3049636A (en) * | 1959-06-22 | 1962-08-14 | Chrysler Corp | Magnetically driven devices |
US3000016A (en) * | 1960-03-03 | 1961-09-19 | Stockwell A Ridge | Magnetic securing means |
DE1172384B (de) * | 1960-03-03 | 1964-06-18 | Magnetfab Bonn Gmbh | Magnetischer flexibler Schichtkoerper |
US3034320A (en) * | 1960-03-21 | 1962-05-15 | Coro Inc | Magnetic earring construction including means to concentrate the magnetic force |
US3071939A (en) * | 1960-05-27 | 1963-01-08 | Coro Inc | Magnetic earring with slidably pivoted clamp members |
US3134057A (en) * | 1960-07-11 | 1964-05-19 | Sumitomo Metal Ind | Magnetic circuit for the deflection of flux leakage |
US3140430A (en) * | 1960-07-15 | 1964-07-07 | Radio Frequency Lab Inc | Standard magnet structure with predetermined air-gap |
US3173067A (en) * | 1962-03-22 | 1965-03-09 | Westinghouse Electric Corp | Temperature-compensated permanent-magnet devices |
US3413551A (en) * | 1964-06-22 | 1968-11-26 | Westinghouse Electric Corp | Induction devices having low side thrust |
US3304527A (en) * | 1965-04-26 | 1967-02-14 | Ibm | Magnetic holding and aligning device |
BE755398A (fr) * | 1969-11-28 | 1971-02-01 | Honeywell Inc | Agencement d'excitation par aimant pour un dispositif magneto-sensible,et procede pour le realiser |
US4077242A (en) * | 1976-12-15 | 1978-03-07 | Sedley Bruce S | Metal magnetic key |
US5125134A (en) * | 1985-12-27 | 1992-06-30 | Tamao Morita | Magnetic fastener |
FR2614656B1 (fr) * | 1987-04-30 | 1989-06-16 | Comadur Sa | Dispositif magnetique d'assemblage, notamment pour prothese dentaire |
US4857841A (en) * | 1987-12-29 | 1989-08-15 | Eaton Corporation | Proximity detector employing magneto resistive sensor in the central magnetic field null of a toroidal magnet |
JP2561109B2 (ja) * | 1988-01-27 | 1996-12-04 | 株式会社応用技術研究所 | 磁気掛止具 |
JPH02105503A (ja) * | 1988-10-14 | 1990-04-18 | Oyo Gijutsu Kenkyusho:Kk | 磁気掛止具 |
JP3161673B2 (ja) * | 1994-05-30 | 2001-04-25 | 松下電器産業株式会社 | マイクロスピーカ用磁気回路ユニット及びその製造方法 |
JPH11275678A (ja) * | 1998-03-25 | 1999-10-08 | Sony Corp | スピーカ装置 |
US7372968B2 (en) * | 2000-11-08 | 2008-05-13 | New Transducers Limited | Loudspeaker driver |
US20040005074A1 (en) * | 2002-07-08 | 2004-01-08 | Sun Technique Electric Co., Ltd. | Hi-fi tweeter |
US8358801B2 (en) | 2007-02-12 | 2013-01-22 | Robert Katz | Magnetic circuit for electrodynamic moving voice coil actuators |
US10978230B2 (en) * | 2018-11-07 | 2021-04-13 | Livivos Inc. | Magnet arrangement for producing a field suitable for NMR in a concave region |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB406086A (en) * | 1932-11-03 | 1934-02-22 | Darwins Ltd | Improvements in or relating to permanent magnets |
FR867783A (fr) * | 1939-11-24 | 1941-11-27 | Thomson Houston Comp Francaise | Perfectionnements aux aimants permanents |
GB549643A (en) * | 1941-05-27 | 1942-12-01 | Standard Telephones Cables Ltd | Improvements in or relating to telephone transmitters and receivers |
-
0
- BE BE505468D patent/BE505468A/xx unknown
-
1951
- 1951-08-27 GB GB20141/51A patent/GB708136A/en not_active Expired
- 1951-08-27 CH CH313462D patent/CH313462A/de unknown
- 1951-09-04 FR FR1041525D patent/FR1041525A/fr not_active Expired
-
1952
- 1952-01-04 US US264984A patent/US2698917A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1011466B (de) * | 1955-06-18 | 1957-07-04 | Philips Patentverwaltung | Magnetsystem fuer elektroakustische Wandler |
DE1020098B (de) * | 1955-10-03 | 1957-11-28 | Stepper & Co | Bremsmagnetanordnung fuer eine Laeuferscheibe, insbesondere von Elektrizitaetszaehlern |
Also Published As
Publication number | Publication date |
---|---|
GB708136A (en) | 1954-04-28 |
FR1041525A (fr) | 1953-10-23 |
US2698917A (en) | 1955-01-04 |
CH313462A (de) | 1956-04-15 |