GERAET ZUM SCHREIBEN ODER AUFTRAGEN EINER FLUESSIGEN SUBSTANZ

摘要

A valve device (12) for controlling the flow of liquid in an applicator such as a writing or coating tool is provided with a piston means comprising a valve rod (4) and a spring seat (1) as a cylinder (2), the flow path associated therewith being tapered as the piston moves in and out. <IMAGE>