Improvements introduced in filtering bushings. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements introduced in filtering spark plugs for the treatment of drinking water and drinking water in which the water to be filtered is directed into a cylindrical, hollow bar of sintered thermoplastic granulate, for example, which is surrounded by a porous sleeve of material synthetic, characterized in that a winding (6) formed by several layers of a permeable fabric whose winding axis is the longitudinal axis of the hollow cylinder is arranged between the bar (1) and the plastic sleeve. (Machine-translation by Google Translate, not legally binding)