EP 0295744 B1 19920304 - MULTIPOLAR ROTOR
Title (en)
MULTIPOLAR ROTOR
Publication
Application
Priority
NL 8701394 A 19870616
Abstract (en)
[origin: EP0295744A1] Method and devices for producing a magnetic object, to be moulded in a moulding device from a mixture of grains of magnetic material and hardening binding agent, said object having pole areas of small dimensions, the mixture being subjected in a moulding cavity of a moulding body of the moulding device to temperature changes, gravity, mechanic forces or magnetic forces, or combinations of those. The invention comprising the reduction of a strong, permanent magnet to fully magnetized anisotropic permantly magnetic material, the reduction of the fragments of fully magnetized anisotropic permanently magnetic material to grains, until all grains are smaller than the width of a pole area, mixing those grains with the hardening binding agent, inserting the mixture into the moulding device, and ensuring that the mixture hardens in the moulding device, providing the permanently magnetized object as the final product.
IPC 1-7
IPC 8 full level
H01F 7/02 (2006.01); H01F 41/02 (2006.01); H02K 15/03 (2006.01)
CPC (source: EP KR)
H01F 13/00 (2013.01 - KR); H01F 41/028 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0295744 A1 19881221; EP 0295744 B1 19920304; AT E73259 T1 19920315; DE 3868705 D1 19920409; ES 2031228 T3 19921201; JP 2587271 B2 19970305; JP S6426348 A 19890127; KR 890001120 A 19890318; KR 950007949 B1 19950721; NL 8701394 A 19890116
DOCDB simple family (application)
EP 88201180 A 19880609; AT 88201180 T 19880609; DE 3868705 T 19880609; ES 88201180 T 19880609; JP 14703688 A 19880616; KR 880007069 A 19880611; NL 8701394 A 19870616