Dispenser

Abstract

In the case of a dispenser for packs containing single-component or multi-component compounds, having a receptacle for the pack, having at least one piston rod and having an advancing mechanism for moving the at least one piston rod in the direction of the receptacle, whereby the advancing mechanism has at least one clamping element that can engage with the piston rod and that can be detachably clamped to the at least one piston rod in order to move it, it is provided that the advancing mechanism is movably joined to the receptacle for the pack in such a way that the advancing mechanism with the piston rod can be moved along the advancing axis out of a first position into a second position. This can prevent or minimize afterflow of the compounds.

What is claimed is: 
     
         1 . A dispenser for at least one pack containing a single-component or multi-component compound, the dispenser comprising:
 a receptacle for the pack;   at least one piston rod; and   an advancing mechanism for moving the at least one piston rod in a direction of the receptacle so as to define an advancing direction, the advancing mechanism having at least one clamping element engageable with the piston rod and detachably clampable to the at least one piston rod in order to move the at least one pison rod, the advancing mechanism with the piston rod being movably joined to the receptacle for the pack in such a way that the advancing mechanism with the piston rod can be moved along an advancing axis out of a first position into a second position relative to the receptacle.   
     
     
         2 . The dispenser as recited in  claim 1  wherein the advancing mechanism is joined to the receptacle for the pack in such a way that the advancing mechanism, together with the at least one piston rod, is movable opposite to the advancing direction. 
     
     
         3 . The dispenser as recited in  claim 2  wherein the advancing mechanism is movable at least one of actively and passively. 
     
     
         4 . The dispenser as recited in  claim 1  wherein the advancing mechanism and the receptacle for the pack are joined together by at least one decoupling element. 
     
     
         5 . The dispenser as recited in  claim 4  wherein the at least one decoupling element allows a path-controlled and force-controlled return stroke of the piston rod opposite to the advancing direction. 
     
     
         6 . The dispenser as recited in  claim 5  wherein the at least one decoupling element is a carriage system, a disc spring or a plastic damper. 
     
     
         7 . The dispenser as recited in  claim 4  wherein the at least one decoupling element is a carriage system, a disc spring or a plastic damper.