EP 0174735 A3 19880120 - HOT PRESSED PERMANENT MAGNET HAVING HIGH AND LOW COERCIVITY REGIONS
Title (en)
HOT PRESSED PERMANENT MAGNET HAVING HIGH AND LOW COERCIVITY REGIONS
Publication
Application
Priority
US 65062384 A 19840914
Abstract (en)
[origin: EP0174735A2] In accordance with a preferred embodiment of the invention, an arcuate magnet (36) is formed by selectively hot-working a composition including iron,neodymium and or praseodymium, and boron so that an edge (40) of the arcuate magnet has greater apparent coercivity than a central region (38) and the central region (38) has a higher remanence than the edge (40).
IPC 1-7
IPC 8 full level
H01F 7/02 (2006.01); H01F 1/057 (2006.01); H01F 41/02 (2006.01)
CPC (source: EP)
H01F 1/0576 (2013.01)
Citation (search report)
- [Y] GB 2057194 A 19810325 - STATNI VYZKUMNY USTAV MATERIAL
- [YD] EP 0108474 A2 19840516 - GEN MOTORS CORP [US]
- [A] WO 8300264 A1 19830120 - HITACHI METALS LTD [JP]
- [A] PATENT ABSTRACTS OF JAPAN, vol. 8, no. 81 (E-238)[1518], 13th April 1984; & JP-A-59 002 555 (HITACHI SEISAKUSHO K.K.) 09-01-1984
Designated contracting state (EPC)
DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0174735 A2 19860319; EP 0174735 A3 19880120; EP 0174735 B1 19910911; AU 4648785 A 19860320; AU 580618 B2 19890119; BR 8504369 A 19860708; CA 1244322 A 19881108; DE 3584061 D1 19911017; ES 546960 A0 19870716; ES 8707373 A1 19870716; JP H0315806 B2 19910304; JP S6174305 A 19860416
DOCDB simple family (application)
EP 85305656 A 19850809; AU 4648785 A 19850821; BR 8504369 A 19850910; CA 486721 A 19850712; DE 3584061 T 19850809; ES 546960 A 19850913; JP 20256385 A 19850914