Device for the electrochemical treatment especially the local electrochemical treatment, of conductive substrate

Device for localized electrochemical treatment of a conducting substrate by movement of said device over said substrate, said device being used with a source of electric current having a pair of terminals, said device being capable of being used in any position, which device comprises:

• a casing provided with an opening and delimiting a space, an electrode arranged in the space and being connectable to one of the terminals of the source of electric current, the conducting substrate being connectable to the other terminal of said source, and an electrolyte inlet and an electrolyte outlet both communicating with the space, characterized in that said device moreover comprises a body made of absorbent, flexible material which does not conduct electricity and which is permeable to gases and liquids, said body being in contact with the said electrode and closing off said opening, projecting beyond the latter, a first pump mounted on said electrolyte inlet and a second pump mounted on the said electrolyte outlet, said first and second pumps having a common driving shaft and the flow rate of the second pump being greater than that of the first pump so as to create in said space an underpressure sufficient to prevent any outflow of electrolyte through said opening.