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.


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    Title :

    Moving objects on surfaces


    Contributors:

    Publication date :

    2016-12-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60B VEHICLE WHEELS , Räder für Fahrzeuge



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