Abstract: A Pump for recirculating a cooling fluid of a vehicle comprises a pump body, which is fixed during use; an impeller mounted on a driven shaft; with a friction coupling of the electromagnetic type, made of a fixed electromagnet, a rotor and an armature. A pulley for taking up a rotational movement is connected to a movement source such as a shaft of the combustion engine of the vehicle and mounted on an outer bearing keyed onto the pump body. An electric motor is provided for driving the driven shaft independently of the movement take-up pulley; and a bell member is fastened to an end of the driven shaft opposite to that which carries the impeller. The friction coupling is designed to rotationally couple/decouple the pulley and bell member and the electric motor is arranged inside the bell member on the opposite side to the impeller relative to friction coupling.

Abstract: Pump assembly for recirculating a cooling fluid of a heat engine, comprising: a pump body, an impeller driven by a driven shaft and inserted in a chamber of the circuit for recirculating the cooling fluid of the heat engine; at least a reversible friction clutch, adapted to transmit the motion from motion generating means, coupled to the motor shaft of the vehicle, to the driven shaft, an electric motor to drive said driven shaft independently of the heat engine; wherein said electric motor and said friction clutch are arranged in an axially external position with respect to the motion generating means of the clutch. Preferably, said electric motor is axially opposed to the friction clutch with respect to the motion generating means, and is axially adjacent to the chamber of the impeller in the axial direction.

Abstract: Apparatus for actuating and controlling the rotation, about their longitudinal axis (Y-Y), of blades (20) of cooling fans (10) for operating machines and/or vehicles, in particular agricultural tractors and off-road vehicles, said fan being mounted on a hub (11) which can be rotationally driven about its axis (X-X) by associated driving means (3,3a) suitable for connection to the heat engine (1) and mounted on a fixed support (5) by means of a bearing (3b) the apparatus comprising a ring (71) provided with a radial seat (71a) inside which a radial pin (72), eccentrically engaged in a base (73) integral with the shank (20a) of the blade (20), is inserted; an electric motor (30) which is coaxial with the axis (X-X) of the hub (11) and the shaft (31) of which is coaxially connected to a reduction gear (40), the kinematic output element (143) of which is coaxially connected by means of a screw (51a)/female thread (76a) coupling to a slider (76) displaceable in both directions along the axis (X-X) and kinematicall

Abstract: Pre-assembled blade (20) for fans (10) for cooling the coolant contained inside the radiator (1) of operating machines and/or vehicles, comprising a blade body (20a) rigidly connected to an axial shank (21), a part of which situated radially on the outside of the blade body is in the form of a cylindrical pin (21b); wherein the shank (21) has a part axially on the outside of the blade body in the form of a cylindrical pin (21b), holes (21c) with internal female threading being formed inside the pin (21b); and in that the blade (20) comprises —a blade flange (22) comprising. a hollow cylindrical body (22a), the opposite end bases of which comprise respectively: a flat edge (22b) provided with through-holes (22c).

Abstract: A double-acting electromagnetic device for transmitting movement to/from a driven/driving member in a vehicle and including a shaft that rotates about a longitudinal axis of rotation and that has, mounted relative thereto a first rotor of a first coupling including a pair of concentric annular electromagnets mounted on a fixed support, a coaxial bell member, a coaxial cup member, a first bearing, a first armature connected to the coaxial bell member, a second armature concentric with the first armature and connected to the coaxial cup member which is mounted idle with respect to the shaft via the first bearing and which has a first pulley formed on a side surface, wherein the support for the electromagnets is attached to a fixed structure part which has a load-bearing function, and wherein the bell member includes an outer annular edge extending in an axial direction towards the electromagnets and mounted axially over the first rotor.

Abstract: A multi-speed drive for a motor cooling fan mounted on a driveshaft has provided a first electromagnetic clutch containing one electromagnet, and first and second armatures. When no current is imposed on the electromagnet, the clutch does not engage and the fan remains stationary with respect to the rotating driveshaft. Depending on the amount of current imposed on the electromagnet, the fan will either rotate at a speed slower than the drive shaft or, when maximum current is imposed, the fan will be rotated at the same speed as the rotating driveshaft.

Abstract: A device for transmitting the movement to a fan for cooling the cooling fluid in a motor vehicle, mounted, by means of an idle support, on an axis parallel to the longitudinal axis (X-X) of the driving shaft of the vehicle, said device comprising movement generating means which are coaxial and integral with the driving shaft; means for transmitting the movement of the driving shaft to a first clutch; at least one first friction clutch with an electromagnetic actuating system, which is arranged on an axis parallel to the longitudinal axis (X-X) of the driving shaft and the rotor of which is connected to said movement transmission means and the engagement of which produces a rotation of the fan at a number of revolutions at least equal to that of the movement generating means.

Abstract: Device for controlling the means (1) for recirculating a cooling fluid in engines (11a) in particular for vehicles and like, comprising a shaft (2) actuating the impeller, means (3,3b) for generating the movement of said shaft and means for transmitting the movement from the said generating means (3,3b) to the said shaft (2) of the impeller (1), in which said movement transmission means comprise a double-action coupling (30,40) comprising: magnetic means (31) integral with a rotor (30;130;230) and able to cooperate with corresponding magnetizable means (41;141;241) of a support (40;140;240) rotationally connected to the shaft (2) of the recirculating means and movable in an axial direction with respect thereto, so as to determine a first speed of rotation of the recirculating means (1), and electromagnetic means (22,22a) able to co-operate with a ring (41a;141a;241a) integral with said support (40;140;240) so as to determine a second and different speed of rotation of the pump impeller (1).

Abstract: Apparatus for conveying air to radiators of motor vehicles and the like having a fan (10) having a plurality of blades (12) each radially mounted its own coupling device (31) on a central body (11) and able to be rotationally actuated about its longitudinal axis by an actuator (41,42,43) depending on the quantity of air required for correct cooling of the fluid, the apparatus has a device (60,160,260,360,460) for engaging/disengaging the transmission of the rotational movement from the drive (23,21;321a,21;421a, 21) generating movement to the fan (10).

Abstract: Apparatus for conveying air to radiators of motor vehicles and the like, comprising a fan (10) having a plurality of blades (12) each radially mounted by means of its own coupling device (31) on a central body (11) and able to be rotationally actuated about its longitudinal axis by means of actuating means (41,42,43) depending on the quantity of air required for correct cooling of the fluid, said apparatus comprising means (60;160;260;360;460) for engaging/ disengaging the transmission of the rotational movement from the means (23,21;321a,21;421a,21) generating said movement to the said fan (10).

Abstract: A device for transmitting movement to a fan for cooling the coolant in a motor vehicle has a shaft on which the fan is mounted by means of an idle support, and a first electromagnetic clutch, engagement of which causes rotation of the fan at a speed equal to that of the shaft. A second clutch causes rotation of the fan at a speed lower than that of the shaft or at zero speed. The second clutch has an actuator coaxially displaceable, in both directions, with respect to the shaft, but idle upon rotation of the latter. A coupling which is coaxially locked in rotation with the shaft is connected to the actuator and is suitable for engagement with the rotor of the second clutch.

Abstract: A device for transmitting the movement to a fan (1) cooling the cooling liquid of a motor vehicle, comprising movement generating means (2;2a,2b) on which the fan (1) is mounted by means of an idle support (1a) , characterized in that it comprises an induction coupling (10) with a front-linkage electromagnetic operating system (11a,11b) having a conducting element (15;115) integral with said fan (1,1a).

Abstract: Device for transmitting the movement to a fan (1) for cooling the coolant in a motor vehicle, comprising movement generating means (3,21) on which the fan (1) is mounted by means of an idle support (1a), a first electromagnetic clutch (30), engagement of which causes rotation of the fan at a number of revolutions equal to that of the movement generating means; a second clutch (60;160;260;360), engagement/disengagement of which causes rotation of the fan at a number of revolutions lower than that of the movement generating means or at zero revolutions; which comprises means (50;150;250;350) for engaging/disengaging the second clutch comprising an actuating element (41) coaxially displaceable, in both directions, with respect to the movement generating means (3;21), but idle upon rotation of the latter; coupling means (47;147;247c;347) which are coaxially locked in rotation with the movement generating means (3;21) and connected to said displacement actuating element (41) and are suitable for engagement with th

Abstract: Device for transmitting the movement to a fan (1) for cooling the coolant in a motor vehicle, comprising movement generating means (3,21) on which the fan (1) is mounted by means of an idle support (1a), a first electromagnetic clutch (30), engagement/disengagement of which causes rotation of the fan at a number of revolutions equal to that of the movement generating means or at zero revolutions; a second clutch (60;160;260;360), engagement/disengagement of which causes rotation of the fan at a number of revolutions lower than that of the movement generating means or at zero revolutions; means (62) of the electromagnetic type for engaging/disengaging the 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 clutch (60) is supported by a fixed shaft (13) in a position substantially projecting from the base (10) of the engine.

Abstract: A multispeed drive for a motor-cooling fan has a shaft extending along and defining an axis and a planetary transmission including a sun gear fixed on the shaft, a planet element rotatable about the axis on the shaft and carrying planet gears meshing with the sun gear, and a ring element rotatable about the axis on the shaft and meshing with the planet gears. A fan is rotatable about the axis and fixed to one of the elements and an input member is also rotatable about the axis on the shaft adjacent the fan. Concentric electromagnetic clutches each have an output side connected to a respective one of the elements and couplable to the input member for closing and coupling the respective output side to the input member and for opening and decoupling the respective output side from the input member. Thus when both clutches are open the fan is decoupled completely from the input member.

Abstract: A loom coupling has a loom shaft with a disk having teeth on its face engageable with a toothed wheel mounted on a machine shaft. An annular electromagnet on a support surrounding the end of the loom shaft is juxtaposed directly with the disk and axially effective springs on the end of the loom shaft resistant displacement of the disk so that the disk can be brought directly into contact with the electromagnet against the force of the springs when the electromagnet is energized.

Abstract: A tool-carrying turret for lathes includes a fixed support body provided with a fixed toothed rim a rotatable toothed rim which has a tool-carrying plate (4) fixed to it and rotatable rigidly with an index disc mounted on a coaxial drive shaft of the turret, a stopping device operated by actuating devices and designed to cause stoppage in rotation of the index disc and relative centering of the toothing of the fixed rim and rotating rim at the end of the tool changing phase.

Abstract: The tool-holder turret for lathes or like machining centers has a fixed support member (1; 52) bearing a rotary member (4; 51) to which there may be attached a tool-holder plate designed to bear a plurality of tools, each of which can brought into the operating position by the rotation of the rotary member, a drive motor (12; 54) also being provided, which is connected to a geared differential transmission unit (15, 18, 20; 47, 18, 20; 57, 64, 66) having three members, the first member, called the driver (15; 47; 57), being connected to the motor and controlling, on one hand, the opening and closing of the turret and, on the other hand, the rotation of its rotary member, the second member, which can be driven in rotation, of the differential unit (18; 18; 64) being connected to the rotary member and the third member, which can be driven in rotation, of the differential unit (20; 20; 66) being connected, via interposed cam transmission means (21, 23; 71, 72), to a rotationally fixed and axially movable member

Abstract: A double-clutch coupling for looms, which comprises a first controllable clutch coupling a drive shaft connected to a first member of the loom to a driven shaft connected to a second member of the loom, movable in synchronism with the first and coaxial with the drive shaft. A second controllable clutch couples the driven shaft to an auxiliary motor device. The clutches are equipped with respective actuating electromagnets acting in opposition to springs. The clutches each comprise an annular electromagnet rigidly connected to a fixed support shell inside which the drive shaft and driven shaft are supported with their axes in a fixed position. The electromagnet is at least partly contained by a rotor axially fixed with respect to it and linked with the magnetic flux generated by the electromagnet itself when it is energized. In front of each rotor there is an annular armature, axially movable under the action of the magnetic field generated by the relevant electromagnet in opposition to the spring.