Holder for packaging, displaying and offering for sale of articles, as well as separate assembly therefor

A holder for packaging articles, displaying them and offering them for sale, at least one pallet unit being present in the holder adapted for carrying a number of articles or layers of articles separated by intermediate trays, the pallet unit being provided along at least a substantial portion of its periphery with an upwardly and downwardly directed rim flange, a levelling device being present by means of which the pallet unit and the articles thereon are movable up and down, together with article bearing trays which may be supported by the pallet unit, the holder comprising means for the support and convenient positioning of the filled holder, said levelling device being selectively operable to move said pallet unit to a selected level and maintain said pallet unit at said selected level until operation of said levelling means by an operator to move said pallet unit to another selected level, said levelling device for moving the pallet unit up and down together with any trays which may be supported on said pallet comprising an inflatable hollow body below the pallet unit provided with a valve and a pressure safety valve, said levelling device being disposed generally outside of said holder and including a vertical plunger extendable into said holder through a bottom opening therein to support and lift the pallet unit.