Abstract: A windscreen wiper system comprising a frame, a motor driven reducer, a bar drive mechanism and two windscreen wipers one of which has two controlled movements, one for sweeping, the other for extension-retraction. Said system comprises three coaxial shafts journalled to the frame, the arms of said two windscreen wipers are carried by two of said shafts which drive them with sweeping movements in the same direction, the extension-retraction is controlled from the third shaft driven with a reciprocating movement of the same frequency as the other two but in the opposite direction and said drive mechanism comprises three rocking levers fixed respectively to each of said coaxial shafts.

Abstract: A windscreen wiper system, designed in particular for road vehicles, providing a non-circular path of any one of the points of at least one windscreen wiper blade and comprising a shaft having an alternating rotational movement which drives a main guide arm associated with the said shaft by a pivot joint, characterized in that it comprises, on one hand, a rocker (2) associated with the main guide arm (3) by a further pivot joint and, on the other hand, a secondary guide arm (4) articulated at two of its points, each articulation comprising at least two pivot joints, one of the above-mentioned articulations connecting it to the rocker (2), the blade (1) being articulated by a pivot joint on the rocker (2).