Abstract: A rotary conductor roll intended to be partially immersed in an electrolyte in a manufacturing line for continuously electroplating a strip (2), the roll includes, on its periphery, at least one electrically conductive active zone (3) and at least one coated zone (41) coated with a flexible material which may optionally be associated with an adhesive and which serves to seal the contact between the strip (2) and the conductive active zone (3) from the electrolyte. At least one intermediate ring (42) is interposed between said conductive active zone (3) and said coated zone (41), said intermediate ring being made of a polymer for which at least one of the following coefficients is intermediate in value between the corresponding coefficients of the material constituting the conductive active zone (3) and of the material constituting said coated zone (41), said coefficients being: coefficient of expansion, flexibility, and swelling due to contact with the electrolyte, e.g.

Abstract: This invention makes it possible to produce a chain having a particularly small overall width, while able to operate with sprockets having a customary tooth thickness. This result is obtained in particular by providing for the inner plates (10) to be deformed, in their end zones (12), on both faces and to delimit projecting portions (16c) directed towards the interior of the chain, these projecting portions thus being separated by a distance (d.sub.1) smaller than the thickness of the teeth of the sprockets with which the chain is to cooperate.