IN157661B - - Google Patents
Info
- Publication number
- IN157661B IN157661B IN1504/CAL/82A IN1504CA1982A IN157661B IN 157661 B IN157661 B IN 157661B IN 1504CA1982 A IN1504CA1982 A IN 1504CA1982A IN 157661 B IN157661 B IN 157661B
- Authority
- IN
- India
- Prior art keywords
- moulding process
- depression
- transducer
- magnet
- coil
- Prior art date
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
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/006—Interconnection of transducer parts
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Measuring Fluid Pressure (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8139109 | 1981-12-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
IN157661B true IN157661B (es) | 1986-05-17 |
Family
ID=10526884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IN1504/CAL/82A IN157661B (es) | 1981-12-30 | 1982-12-30 |
Country Status (13)
Country | Link |
---|---|
US (1) | US4578808A (es) |
EP (1) | EP0083174B1 (es) |
JP (1) | JPS58189000A (es) |
AT (1) | ATE21477T1 (es) |
AU (1) | AU564586B2 (es) |
CA (1) | CA1200307A (es) |
DE (1) | DE3272633D1 (es) |
DK (1) | DK568182A (es) |
GB (1) | GB2113503B (es) |
IN (1) | IN157661B (es) |
NZ (1) | NZ202880A (es) |
ZA (1) | ZA829234B (es) |
ZW (1) | ZW26882A1 (es) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4626688A (en) | 1982-11-26 | 1986-12-02 | Barnes Gary T | Split energy level radiation detection |
JP2575831B2 (ja) * | 1988-07-25 | 1997-01-29 | スター精密 株式会社 | 発音体 |
AT398355B (de) * | 1993-02-26 | 1994-11-25 | Koninkl Philips Electronics Nv | Elektroakustischer wandler mit einem abschlussteil |
AT398354B (de) * | 1993-02-26 | 1994-11-25 | Koninkl Philips Electronics Nv | Elektroakustischer wandler mit einer maske |
JP3618498B2 (ja) * | 1996-12-26 | 2005-02-09 | 株式会社シチズン電子 | 表面実装型電磁発音体 |
KR100332866B1 (ko) * | 1999-01-28 | 2002-04-17 | 이형도 | 마이크로 스피커와 그 제조방법 |
US6395915B1 (en) * | 1999-09-10 | 2002-05-28 | Technikrom, Inc. | Method for producing purified tocotrienols and tocopherols using liquid chromatography |
US20040032957A1 (en) * | 2002-08-14 | 2004-02-19 | Mansy Hansen A. | Sensors and sensor assemblies for monitoring biological sounds and electric potentials |
US7270778B2 (en) * | 2004-03-18 | 2007-09-18 | General Electric Company | Method for attachment of a plastic probe tip to a metal component |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2820107A (en) * | 1954-12-22 | 1958-01-14 | Sonotonc Corp | Electro-mechanical signal transducers |
US3324253A (en) * | 1962-10-15 | 1967-06-06 | Matsushita Electric Ind Co Ltd | Small-sized electroacoustic transducers |
US3242386A (en) * | 1962-12-07 | 1966-03-22 | Western Electric Co | Magnet stabilizing method and apparatus |
NL301514A (es) * | 1962-12-13 | |||
US3497638A (en) * | 1967-03-20 | 1970-02-24 | Ltv Ling Altec Inc | Explosion-proof acoustic device |
US3542974A (en) * | 1968-06-14 | 1970-11-24 | Western Electric Co | Electrical transducer |
US4246450A (en) * | 1979-05-25 | 1981-01-20 | International Telephone And Telegraph Corporation | Telephone transducer assembly and method of making same |
GB2062405B (en) * | 1979-10-20 | 1983-07-20 | Plessey Co Ltd | Acoustic transducer production for telephones |
US4443667A (en) * | 1982-01-11 | 1984-04-17 | Bell Telephone Laboratories, Incorporated | Electromagnetic transducer |
US4425482A (en) * | 1982-03-08 | 1984-01-10 | Western Electric Company | Ring armature electroacoustic transducer |
-
1982
- 1982-12-14 GB GB08235544A patent/GB2113503B/en not_active Expired
- 1982-12-14 DE DE8282306679T patent/DE3272633D1/de not_active Expired
- 1982-12-14 EP EP82306679A patent/EP0083174B1/en not_active Expired
- 1982-12-14 AT AT82306679T patent/ATE21477T1/de active
- 1982-12-15 ZA ZA829234A patent/ZA829234B/xx unknown
- 1982-12-22 AU AU91809/82A patent/AU564586B2/en not_active Expired - Fee Related
- 1982-12-22 DK DK568182A patent/DK568182A/da not_active Application Discontinuation
- 1982-12-22 NZ NZ202880A patent/NZ202880A/en unknown
- 1982-12-24 ZW ZW268/82A patent/ZW26882A1/xx unknown
- 1982-12-24 CA CA000418583A patent/CA1200307A/en not_active Expired
- 1982-12-27 JP JP57227197A patent/JPS58189000A/ja active Pending
- 1982-12-30 IN IN1504/CAL/82A patent/IN157661B/en unknown
-
1983
- 1983-01-12 US US06/457,358 patent/US4578808A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB2113503B (en) | 1985-05-09 |
AU9180982A (en) | 1983-07-07 |
ZW26882A1 (en) | 1983-09-14 |
DK568182A (da) | 1983-07-01 |
NZ202880A (en) | 1985-02-28 |
EP0083174B1 (en) | 1986-08-13 |
CA1200307A (en) | 1986-02-04 |
EP0083174A1 (en) | 1983-07-06 |
ATE21477T1 (de) | 1986-08-15 |
US4578808A (en) | 1986-03-25 |
JPS58189000A (ja) | 1983-11-04 |
GB2113503A (en) | 1983-08-03 |
DE3272633D1 (en) | 1986-09-18 |
ZA829234B (en) | 1983-12-28 |
AU564586B2 (en) | 1987-08-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0190461A3 (en) | Process for producing permanent magnets and permanent magnet | |
EP0473998A3 (en) | Method of fabricating an infermation card incorporating works and information card incorporating marks obtained by this method | |
EP0152326A3 (en) | Process for producing a write-and-read magnetic head and head produced by that process | |
DE3876529D1 (de) | Magnetisches weicheisenpulver zur formung magnetischer abschirmung, verbindung und verfahren zur herstellung. | |
EP0225392A4 (en) | RESIN-BASED MAGNETIC COMPOSITION AND METHOD FOR PRODUCING MAGNETIC CASTINGS THEREOF. | |
DE3575232D1 (de) | Verfahren zur herstellung eines permanentmagneten. | |
DE3587906D1 (de) | Verfahren zur Herstellung eines gecoateden magnetischen Pulvers und gepresster magnetischer Pulverkern. | |
IN157661B (es) | ||
JPS55141712A (en) | Acicular magnetic iron oxide and method for producing same | |
DE3068131D1 (en) | Process for producing epoxy resin castings | |
AU6709481A (en) | Method of producing an article and article produced in a mould which defines the contour of the article | |
GB1528078A (en) | Method and apparatus for moulding a vessel | |
DE3070306D1 (en) | Method of making a duplicate of an original magnetic record and duplicate magnetic record produced by said method | |
GB2057194B (en) | Method of producing a permanent anisotropic magnet | |
GB2202951B (en) | An improved magnetic encoder and a method for producing the same | |
JPS5718303A (en) | Method of producing anisotropic oxide permanent magnet | |
DE3173999D1 (en) | Method of manufacturing a molded coil | |
DE69115223D1 (de) | Verfahren zur Herstellung von nadelförmigen magnetischen Eisenoxydteilchen für magnetische Aufzeichnung. | |
GB2165095B (en) | Coil arrangement for producing static magnetic field | |
BG34432A1 (en) | Method for producing anisotropic permanent magnets | |
YU81379A (en) | Method of regulating the reluctance in a magnet circuit ofa ferrite pot core | |
JPS5496765A (en) | Method of producing molded coil | |
JPS57194512A (en) | Method of producing magnet | |
DE68923156D1 (de) | Verfahren zur Herstellung von magnetischen Eisenoxidteilchen für magnetische Aufzeichnung. | |
JPS52152458A (en) | Method of producing resin molded coil |