摘要 |
On its outer surface (10) turned towards a stator (2) spread on a curved line coaxial with the rotational axis (4), a removable transmitter element (5) includes a number of permanent magnets (8) to set spacing for a catch (8,9). On its outer surface (11) on the curved line turned towards the transmitter element, the stator includes a tactile, magnetizable element (9) forming the catch operating with the magnets.
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