STORAGE BATTERY IN PARTICULAR FOR MOTOR VEHICLES, STORAGE BATTERY FILLER OPENING CLOSING ELEMENT AND ITS ASSOCIATED FILTER CARTRIDGE

摘要

The accumulator comprises a container or vessel with a plurality of holes which define vent ducts for the gases developed in the accumulator. A filtering element is provided in each duct for allowing gases to pass through but preventing the electrolyte from passing through. The filtering element is constituted by a porous substrate combined with a polytetrafluoroethylene membrane.