Claims
- 1. An anisotropic magnet comprising:
a permanent magnet composed of a magnetic powder and having
a first side having at least one first magnetic pole a second side having at least one second magnetic pole which is connected to said first pole by magnetic flux lines and having an aperture communicating with said first side
said aperture having an axis and having more area at its plane of intersection with said second side than at its plane of intersection with said first side whereby said magnetic flux lines are compressed toward said axis in the vicinity of said second magnetic pole.
- 2. The anisotropic magnet of claim 1 further comprising:
said aperture is substantially frustoconical.
- 3. The anisotropic magnet of claim 1 further comprising: said aperture is substantially frustopyramidal.
- 4. The anisotropic magnet of claim 1 further comprising:
a layer of high temperature plastic which encloses said first side.
- 5. The anisotropic magnet of claim 1 further comprising:
a layer of permalloy which encloses said first side.
- 6. The anisotropic magnet of claim 5 further comprising:
said layer of permalloy encloses a layer of nickel; and said layer of nickel encloses said first side.
- 7. The anisotropic magnet of claim 5 further comprising:
said layer of permalloy encloses a layer of copper; and said layer of copper encloses said first side.
- 8. The anisotropic magnet of claim 5 further comprising:
said layer of permalloy encloses a layer of iron; and said layer of iron encloses said first side.
- 9. The anisotropic magnet of claim 5 further comprising:
said layer of permalloy encloses a layer of brass; and said layer of brass encloses said first side.
- 10. The anisotropic magnet of claim 1 further comprising:
said second side being bisected by a recessed channel; and a layer of high temperature plastic is deposited into said recessed channel.
- 11. An anisotropic magnet comprising:
a permanent magnet composed of a magnetic powder and having
a first side having at least one first magnetic pole a second side adjoining said first side a third side adjoining said second side and having at least one second magnetic pole a permalloy cap which is formed coextensively onto said first side and said second side magnetic flux lines connecting said first magnetic pole to said second magnetic pole whereby said magnetic flux lines are damped in the vicinity of said first magnetic pole and amplified in the vicinity of said second magnetic pole.
- 12. The anisotropic magnet of claim 11 further comprising:
said third side has a frustoconical aperture communicating with said first side; said frustoconical aperture has an axis connecting said magnetic poles; and said frustoconical aperture encompasses more area on said third side than on said first side.
- 13. The anisotropic magnet of claim 11 further comprising:
a layer of high temperature plastic which is formed coextensively onto said permalloy cap.
- 14. The anisotropic magnet of claim 11 further comprising:
said third side being bisected by a groove; and said groove being filled with a high temperature plastic.
- 15. The anisotropic magnet of claim 11 further comprising:
said third side has a frustopyramidal aperture communicating with said first side; said frustopyramidal aperture has an axis connecting said magnetic poles; and said frustopyramidal aperture encompasses more area on said third side than on said first side.
- 16. An improved process of manufacturing a permanent magnet of the type including the steps of providing a magnetic powder; providing a binder resin; molding said permanent magnet; cooling said permanent magnet; and activating said permanent magnet magnetically wherein the improvement comprises:
penetrating said permanent magnet with a substantially frustoconical axial aperture.
- 17. The method of claim 16 further comprising:
molding a layer of high temperature plastic onto at least one surface of said permanent magnet.
- 18. The method of claim 16 further comprising:
coating at least one surface of said permanent magnet with a layer of permalloy.
- 19. The method of claim 18 further comprising:
coating said at least one surface of said permanent magnet with a layer of nickle prior to said step of coating said at least one surface of said permanent magnet with said layer of permalloy.
- 20. The method of claim 19 further comprising:
coating said at least one surface of said permanent magnet with a layer of copper prior to said step of coating said at least one surface of said permanent magnet with said layer of nickle.
(b) CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a divisional application of application Ser. No. 09/881,127 being examined in Art Unit 2832 and this divisional application is made pursuant to 37 C.F.R. 1.60. Applicants claim the benefit of the Jun. 13, 2001 filing date of the above named parent application pursuant to 35 U.S.C. 120.
Divisions (1)
|
Number |
Date |
Country |
Parent |
09881127 |
Jun 2001 |
US |
Child |
10247608 |
Sep 2002 |
US |