BigPatents India

Device for transmitting the movement to a fan (1) for cooling the coolant in a motor vehicle, comprising a fixed support shaft (13) and movement generating means (3,21) on which the fan (1) is mounted by means of an idle support (la); a first electromagnetic clutch (30), the rotor of which is integral with said movement generating means (3, 21) and engagement of which causes rotation of the fan (1) at a number of revolutions equal to that of the movement generating means; a second clutch (60), the rotor (61) of which is mounted on said movement generating means (21) and engagement/disengagement of which causes rotation of the fan at a lower number of revolutions or zero speed compared to that of the movement generating means (3); means (62) of the electromagnetic type for engaging/disengaging the said second clutch; in which said first clutch (30) is supported in a position substantially adjacent to the fixed base (10) of the engine casing and said second clutch (60) is supported by a fixed shaft (13) in a position substantially projecting from the base (10) of the engine, the engaging means (62a,62b) of the second clutch (60) being mounted on the said movement generating means (21) (FIG. - 1)