Patent ID: 9613738
Date: 2017-04-04
CPC Classifications: B25B,G01D,G01R,H01F

Claim:
1. A magnet, comprising: a body, comprising a first, a second and a third section, a slide comprising a permanent magnet, a cylindrical first pole piece and a second pole piece, the pole pieces being attached to opposite magnetic pole surfaces of the permanent magnet, and the slide being movably arranged into the cylindrical recess so that the cylindrical first pole piece is directed towards the bottom of the cylindrical recess and the slide being movable relative to the body between a first and a second position; wherein at the first position of the slide, the cylindrical first pole piece, the permanent magnet and at least part of the second pole piece are located inside the cylindrical recess, and at the second position of the slide, at least part of the cylindrical first pole piece is located inside the cylindrical recess and the second pole piece is located outside the cylindrical recess.