JPS5442609B2 - - Google Patents
Info
- Publication number
- JPS5442609B2 JPS5442609B2 JP4025075A JP4025075A JPS5442609B2 JP S5442609 B2 JPS5442609 B2 JP S5442609B2 JP 4025075 A JP4025075 A JP 4025075A JP 4025075 A JP4025075 A JP 4025075A JP S5442609 B2 JPS5442609 B2 JP S5442609B2
- Authority
- JP
- Japan
- 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
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
-
- 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
- H04R2209/024—Manufacturing aspects of the magnetic circuit of loudspeaker or microphone transducers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Powder Metallurgy (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4025075A JPS51115817A (en) | 1975-04-04 | 1975-04-04 | Magnet plate for electro-acoustic transducing and the method of its ma nufacture |
| GB1329476A GB1524124A (en) | 1975-04-04 | 1976-04-01 | Method for producing a magnetic powder |
| CA249,429A CA1090086A (en) | 1975-04-04 | 1976-04-02 | Method for producing a magnet plate for electroacoustic transducers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4025075A JPS51115817A (en) | 1975-04-04 | 1975-04-04 | Magnet plate for electro-acoustic transducing and the method of its ma nufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS51115817A JPS51115817A (en) | 1976-10-12 |
| JPS5442609B2 true JPS5442609B2 (US20110009641A1-20110113-C00160.png) | 1979-12-15 |
Family
ID=12575442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4025075A Granted JPS51115817A (en) | 1975-04-04 | 1975-04-04 | Magnet plate for electro-acoustic transducing and the method of its ma nufacture |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS51115817A (US20110009641A1-20110113-C00160.png) |
| CA (1) | CA1090086A (US20110009641A1-20110113-C00160.png) |
| GB (1) | GB1524124A (US20110009641A1-20110113-C00160.png) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54145958A (en) * | 1978-05-09 | 1979-11-14 | Yokohama Kagaku Kinzoku Kk | Method of producing porous magnet and mold used for executing same |
| ES2016502A6 (es) * | 1989-08-31 | 1990-11-01 | Uralita Sa | Teja ceramica. |
| GB2315266B (en) * | 1996-07-12 | 1999-11-17 | Ibm | Magnet and method for manufacturing a magnet |
-
1975
- 1975-04-04 JP JP4025075A patent/JPS51115817A/ja active Granted
-
1976
- 1976-04-01 GB GB1329476A patent/GB1524124A/en not_active Expired
- 1976-04-02 CA CA249,429A patent/CA1090086A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS51115817A (en) | 1976-10-12 |
| GB1524124A (en) | 1978-09-06 |
| CA1090086A (en) | 1980-11-25 |
