An apparatus comprises an object (1) and a plurality of roller units (5A-5D) on said object, each roller unit comprising at least one roller element (13) and being switchable between a mobile mode in which the apparatus is moveable across a surface on which said apparatus is positioned in use by rolling on said roller elements, and an immobile mode in which movement of the apparatus across a said surface is inhibited. The roller units (5A-5D) are configured such that manual depression of the object towards a said surface causes switching of at least one roller unit between the mobile and immobile modes.
MOVING OBJECTS ON SURFACES
BEWEGLICHE OBJEKTE AUF OBERFLÄCHEN
DÉPLACEMENT D'OBJETS SUR DES SURFACES
11.01.2017
Patent
Elektronische Ressource
Englisch
SYSTEM AND METHOD FOR MEASURING SURFACES OF MOVING OBJECTS
Europäisches Patentamt | 2019
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