Applicator device for a stick of spreadable material

An applicator device for a stick of spreadable material, comprising an elongate gripping portion;

• a screw portion connected to the gripping portion in axial alignment therewith and adapted for relative rotary movement with respect to the gripping portion, said screw portion being in the form of an elongate member having a cavity therein for receiving said stick slidably therewithin;
• a screwthreaded spindle of which at least a substantial part is disposed within the gripping portion non-rotatably but axially movable therein;
• said screwthreaded spindle having a first end towards said cavity in said screw portion and a second end, wherein the first end is provided with a ball head;
• a first sleeve having an internal screwthread means therein, in screwthreaded engagement on said screwthreaded spindle and fixed to said screw portion;
• and means for displacement of said stick in said cavity in said screw portion, said displacement means comprising a piston connected to said first end of said screwthreaded spindle and a second sleeve disposed around said piston, wherein said piston and said second sleeve initially comprise a one-piece, injection molded assembly with a plurality of rupture locations, said rupture locations connecting the piston and the second sleeve for allowing subsequent separation of the piston and the second sleeve and said piston has a spare for connecting said ball head to said piston such that the piston and spindle may rotate relative to each other while preventing relative axial movement therebetween, said piston in use of the device co-operating with an end face of said stick fitted into said screw portion, and said second sleeve engaging the adjoining end portion of said stick.