Patent ID: 8899638

Claim:
A locking system for a rotatable part, comprising: a gear wheel having a tooth system and an axis of rotation, the gear wheel being one of connected and connectable to the rotatable part, the tooth system having a pitch; and a plurality of toothed segments arranged along a periphery of the gear wheel, each of the plurality of toothed segments is movable toward and away from the tooth system in a direction that is one of toward and away from the axis of rotation and parallel to the axis of rotation, wherein teeth and tooth spaces of e h of said plurality of tooth segments are engageable with the tooth system without play, wherein a first toothed segment of the plurality of toothed segments engages the tooth system at a first position of the gear wheel and each of the others of the plurality of toothed segments are engageable with the tooth system of the gear wheel at positions of the gear wheel that are offset from the first position by different non-whole number fractions of the pitch, and wherein each toothed segment of the plurality of toothed segments is adjustable in a circumferential direction around the axis of rotation of the gear wheel and is fixable in the selected position, whereby the offset between each of the plurality of toothed segments is adjustable.