Dispenser for materials with viscosities ranging from liquid to paste like substance, has pump chamber movable within area of extension, with which protective cap is carried along in rotatably coupled manner, vertically relative to cap

摘要

The dispenser has a pump chamber (2) accommodating a piston, where the pump chamber has an inlet valve and an outlet valve (6), which are pre-stressed in a closing position. A dispenser opening (11) is formed in a tower like extension (5) of the pump chamber. The extension and/or the pump chamber are surrounded by a protective cap (7). The pump chamber is movable only within an area of the extension, with which the protective cap is carried along in a rotatably coupled manner, vertically relative to the protective cap.