Device for transmitting the movement to fans for cooling engines

Abstract

Device for transmitting the movement to a fan for cooling the coolant in a motor vehicle, comprising a fixed support shaft and movement generating means on which the fan is mounted by means of an idle support; a first electromagnetic clutch, the rotor of which is integral with said movement generating means and engagement of which causes rotation of the fan at a number of revolutions equal to that of the movement generating means, a second clutch, the rotor of which is mounted on said movement generating means 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; means of the electromagnetic type for engaging/disengaging the said second clutch; in which said first clutch is supported in a position substantially adjacent to the fixed base of the engine casing the said second clutch is supported by a fixed shaft in a position substantially projecting from the base of the engine, the engaging means of the second clutch being mounted on the said movement generating means.

Dependencies are inferred from the claim text.