EP 0081605 B1 19891004 - BISTABLE MAGNETIC DEVICE
Title (en)
BISTABLE MAGNETIC DEVICE
Publication
Application
Priority
EP 81110415 A 19811214
Abstract (en)
[origin: EP0081605A1] 1. A bistable magnetic arrangement comprising as the first magnetic link a core (3) which is enclosed by a coil (5) and can be residually magnetized alternately by coil currents of alternating direction, and as the second magnetic link two permanent magnets (13, 14) receiving the residually magnetizable core (3) between them-selves in its axial direction, one of the magnetic links being mounted to be axially displaced in relation to the other magnetic link alternately into one or the other of two end positions by the reversal of the coil current, characterized in that a) the core (3) is made from a magnetically hard material, e.g., ALNICO - i.e., has a medium coercitive field strength and is rigidly attached to the fixed coil member (2), b) the permanent magnets (13, 14) are made of a magnetically extremely hard material, e.g., SECO (rare earth cobalt) or oxide ceramic ferrite - i.e., have a coercitive field strength which is substantially higher than that of the material of the core (3), c) associated with the two flat permanent magnets (13, 14) forming the displaceable magnetic link is a frame (6) of a nonmagnetic material which receives the magnets in opposite end faces (7, 8) and is guided on fixed parts (2b) of the bistable arrangement over the path of movement of the displaceable magnetic link (13, 14) and that d) the frame (6) has a suitably constructed actuating member (21) for a switching device.
IPC 1-7
IPC 8 full level
H01F 7/16 (2006.01); H01F 7/18 (2006.01); H01H 51/27 (2006.01); H01F 7/122 (2006.01)
CPC (source: EP)
H01F 7/1646 (2013.01); H01F 7/1872 (2013.01); H01H 51/27 (2013.01); H01F 7/122 (2013.01)
Citation (examination)
- DE 1614727 A1 19701210 - STANDARD ELEKTRIK LORENZ AG
- FR 691477 A 19301022
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0081605 A1 19830622; EP 0081605 B1 19891004; AT E46984 T1 19891015; DE 3177113 D1 19891109; DE 3243949 A1 19830922; ES 518183 A0 19840301; ES 8402979 A1 19840301
DOCDB simple family (application)
EP 81110415 A 19811214; AT 81110415 T 19811214; DE 3177113 T 19811214; DE 3243949 A 19821127; ES 518183 A 19821214