Patent ID: 7168933

Claim:
Device for discharge or outfeed of a pasty product, preferably foodstuff, from a container, wherein the discharge of the product ( 2 ) from the container ( 3 ) is accomplished by imparting a triggering movement to a trigger ( 6 ), said triggering movement being transferred to a piston means ( 11 ) such that said piston means ( 11 ) is brought to perform a discharge movement in a discharge direction (F) for discharge or outfeed of the product ( 2 ) from the container ( 3 ), characterized in that at least one retraction or withdrawal means ( 24 ) is provided for imparting to the piston means ( 11 ) a retraction movement in a retraction direction (R) opposite to the discharge direction (F), such that the pressure from the piston means ( 11 ) against the container ( 3 ) is relieved for accomplishing non-drop operation after discharge, that at least one stroke setting or stroke determining means ( 30 ) is provided for determining the stroke of the piston means ( 11 ) and thereby, the dose volume during each discharge or outfeed of product ( 2 ) from the container ( 3 ), that a stroke setting means ( 30 ) for determining a stroke of the piston means ( 11 )is replaceably provided on said piston means ( 11 ) such that it can be replaced by another stroke setting means ( 30 ) for determining or setting another stroke, that the retraction means ( 24 ) comprises a sleeve-like member ( 25 ) which is threaded onto a piston rod ( 12 ) of the piston means ( 11 ), that the retraction means ( 24 ) further includes two arms ( 26 ) which extend in a forward direction from the sleeve-like member ( 25 ) and are located on opposite sides of the piston rod ( 12 ), and that the arms ( 26 ) at the front are connected with each other through a front member ( 27 ) which is threaded onto the piston rod ( 12 ).