GB668057A - Improvements in or relating to permanent magnets - Google Patents
Improvements in or relating to permanent magnetsInfo
- Publication number
- GB668057A GB668057A GB19918/50A GB1991850A GB668057A GB 668057 A GB668057 A GB 668057A GB 19918/50 A GB19918/50 A GB 19918/50A GB 1991850 A GB1991850 A GB 1991850A GB 668057 A GB668057 A GB 668057A
- Authority
- GB
- United Kingdom
- Prior art keywords
- poles
- magnetic
- pole
- flux
- permanent magnets
- 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
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
- H01F13/003—Methods and devices for magnetising permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Magnetic Treatment Devices (AREA)
Abstract
668,057. Permanent magnets. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Aug. 10, 1950 [July 4, 1950], No. 19918/50. Class 35. A unitary anisotropic permanent magnet unit has a series of poles whose length is great compared with their spacing, and the magnetic preferential direction of the entire body is parallel to the direction of the pole limbs. The invention is shown in a straight pole unit, e.g. for magnetic separators, but annular pole-members in which the poles are radial or axial, e.g. for cycle dynamos, are also described. The magnet body is hardened in the direction 11 between magnetic poles 9, 10. It is stated that although the flux 3 in the transverse connection between the poles is at right angles to the magnetic preferential direction, the reluctance is not substantial, probably due to flux scatter, as shown at 12. The connecting yoke part is made thicker than is theoretically necessary such that the excess material used is not greater than 30 per cent of the volume of a pair of poles. Final magnetization is effected by turns of wire round the individual poles.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL668057X | 1950-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB668057A true GB668057A (en) | 1952-03-12 |
Family
ID=19798816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19918/50A Expired GB668057A (en) | 1950-07-04 | 1950-08-10 | Improvements in or relating to permanent magnets |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB668057A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4292261A (en) * | 1976-06-30 | 1981-09-29 | Japan Synthetic Rubber Company Limited | Pressure sensitive conductor and method of manufacturing the same |
-
1950
- 1950-08-10 GB GB19918/50A patent/GB668057A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4292261A (en) * | 1976-06-30 | 1981-09-29 | Japan Synthetic Rubber Company Limited | Pressure sensitive conductor and method of manufacturing the same |
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