Patent ID: 8967215
Filing Date: 2015-03-03
Classification: B65C,Y10T

Abstract:
1. A labelling device for labelling objects, in particular moving objects, comprising: a linearly displaceable piston operably connectable to a moving mechanism for moving the piston from a resting position to a labelling position and vice versa; a label carrying mechanism arranged at the distal end of the piston for carrying an adhesive label and for affixing the adhesive label to an object via physical contact with the object at said labelling position of the piston; and a force-switching-state system comprising a piston magnet attached to said piston and a drive coupling housing circumferentially surrounding said piston and attached to said moving mechanism in a linearly slidable manner, said drive coupling housing having a cavity arranged for generating a localized magnetic field within said cavity so as to provide an attractive magnetic force on said piston magnet when said piston magnet is positioned in said cavity and define an attractive force state, said said force-switching-state system operable to maintain said piston in relation to said moving mechanism in said attracting force state such that the piston moves with the moving mechanism from said resting position to said labelling position, wherein said physical contact with the object creates an opposite repelling force from the object onto the label carrying mechanism that causes displacement of said piston magnet from said cavity, said displacement causing a change of said force state of said displaceable piston from being in said attracting force state to a repelling force state in which said piston separates from the moving mechanism and moves back to said resting position.