| 摘要 |
<p>Unit, comprising a first part and a second part arranged in a moveable manner relative to the first part, wherein the first part comprises a blade part extending in the movement direction, in particular an elongated blade part, wherein the second part comprises at least two rotatably mounts discs that can be driven and each have a cone-shaped section, wherein the rotational axes of the discs cross each other, wherein the cone tip or the direction of tapering of the cone-shaped sections points in the direction of the point of intersection, wherein the rotational axes are oriented perpendicular to the movement direction, wherein the blade part is arranged between the cone-shaped sections of the discs, wherein the discs at the circumference thereof comprise permanent magnets in the respective cone-shaped section, the magnetizing direction of each magnet having an alternating direction to the neighboring permanent magnet in the circumferential direction, in particular perpendicular to the surface of the respective cone-shaped section, wherein the discs are arranged in a magnetically coupled manner.</p> |
