H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/50
H01H 50/18 (2006.01) H01F 7/08 (2006.01) H01F 7/16 (2006.01) H01H 51/22 (2006.01)
Patent
CA 1136178
AN ELECTROMAGNET WITH A MOVING SYSTEM AND PERMANENT MAGNET, ESPECIALLY FOR CONTACTORS Abstract of the Disclosure A moving system constituted by a permanent magnet and pole-pieces is accurately guided in axial translational motion within the coil unit of an electro- magnet and enclosed within a coil form member, the axis of magnetization being perpendicular to the axis of the coil unit. Air-gap zones are located at both ends of the coil unit and a stationary yoke surrounds the two ends of the coil. Flat portions of the yoke which are parallel to the axis of magnetization each penetrate respectively into one air-gap zone so as to ensure that, at least in one stable position of the moving system, a flat portion of the yoke is in contact with one of the pole-pieces whilst the other flat portion is in contact with the other pole-piece. Better magnetic coupling between the coil, the air-gaps and the permanent magnet as well as higher operating efficiency are achieved. - 1 -
360315
Fetherstonhaugh & Co.
Telemecanique Electrique (la)
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