Abstract: A compact geared reduction unit for application with transmission shaft subjected to radial loads, comprising a box-like body inside which a gear system is accommodated for the transmission of rotary motion from a driving shaft to a transmission shaft, which is provided with an output reduction stage of the epicyclic type; the output reduction stage comprises a driving sun gear which rotates about a main axis and a ring gear which is integrally associated with the box-like body, between which multiple planet gears are engaged which are supported in rotation about respective longitudinal axes which are parallel to the main axis by a transmission planet carrier, which in turn rotates about the main axis and is associated so as to be integral in rotation with the transmission shaft at a connection region. The reduction unit furthermore provides for rolling means adapted to support radial loads associated with the transmission shaft.

Abstract: A shaft-hub connection system with angular play for bidirectional transmission of driving torque, comprising a shaft, a hub provided with a hole inside which the shaft is accommodated, and elements for connection which are interposed between the hub and said shaft. The connection elements comprise at least one functional assembly which comprises a slot in which a corresponding coupling element is accommodated so that it can move and is adapted to assume alternately a first position, in which it is retracted within the slot, a second position, in which it protrudes partially with respect to it along a first orientation, and a third position, in which it protrudes partially with respect to it along a second orientation, elastic compression elements interposed between the slot and the coupling element, a first seat and a second seat for the abutment of the coupling element.

Abstract: An epicyclic reduction unit for applications with an upward output, which comprises a casing for containing at least one first epicyclic reduction stage that is interposed between an input actuation unit and an output shaft that is arranged in an upper region, the first stage being composed of a driving sun gear that rotates about a main rotation axis that is vertical and a ring gear that is integral with the casing, between which a plurality of planet gears is engaged which are supported in rotation about their own longitudinal axis and about the rotation axis by a driven planet carrier, which in turn rotates about the rotation axis, means being provided for connecting by suspension at least the planet carrier of the first stage to the output shaft, the sun gear of the first stage resting on the input actuation unit, which actuates it in rotation about the rotation axis.

Abstract: An epicyclic reduction unit for applications with an upward output, which comprises a casing for containing at least one first epicyclic reduction stage that is interposed between an input actuation unit and an output shaft that is arranged in an upper region, the first stage being composed of a driving sun gear that rotates about a main rotation axis that is vertical and a ring gear that is integral with the casing, between which a plurality of planet gears is engaged which are supported in rotation about their own longitudinal axis and about the rotation axis by a driven planet carrier, which in turn rotates about the rotation axis, means being provided for connecting by suspension at least the planet carrier of the first stage to the output shaft, the sun gear of the first stage resting on the input actuation unit, which actuates it in rotation about the rotation axis.

Abstract: A protective device for universal joint transmissions has at least two coaxial tubular protective elements, with the two tubular protective elements each having, at their opposite ends, a protective hood, The two tubular protective elements each having a locator flange associated rigidly with the tubular protective element. The protective hood has a coupling flange that is coaxial to the locator flange and is adapted to abut against the locator flange. The protective hood has a cylindrical accordion portion supported by the coupling flange. The protective hood also has at least one fastening element adapted to fasten the coupling flange on the locator flange. The protective device has at least one supporting ring, which has engagement elements for the engagement of the supporting ring with the locator flange, which is accommodatable rotatably in an annular seat provided at the outer surface of the hub of the fork of the joint.

Abstract: An uncoupling device, particularly for universal joint transmissions, is provided. The device includes a cylindrical casing, which is integral with a fork of a universal joint, having a plurality of radial slots provided on the inner circumferential surface of the casing. A pawl supporting cage is integral with a rotation shaft and includes a plurality of radial seats. The pawl is accommodated rotatably within the casing. A plurality of pawls is adapted to be accommodated in the radial seats of the cage. The pawls are adapted to pass from a coupling configuration to an uncoupling configuration. The device further includes an annular element which can move axially between a retracted position and an advanced position. The annular element includes a plurality of tongues.

Abstract: A torque limiting device, particularly for power transmission elements, is provided. The torque limiting device includes a first connecting member and a second connecting member, which is connected rotatably to a driven element. The first connecting member includes a motor driving disk and the second connecting member includes a sliding disk, and further includes a pin supporting body which comprises a drum that is assembled on the second connecting member and includes a plurality of radial holes, each one of which accommodates a pin that is pressed, toward the center of the drum, by elastic means, and abuts, with at least one of its faces which is inclined with respect to the central rotation axis of the second connecting member, against at least one corresponding abutment face.

Abstract: A torque limiting device, particularly for power transmission elements, is provided. The torque limiting device includes a first connecting member and a second connecting member, which is connected rotatably to a driven element. The first connecting member includes a motor driving disk and the second connecting member includes a sliding disk, and further includes a pin supporting body which comprises a drum that is assembled on the second connecting member and includes a plurality of radial holes, each one of which accommodates a pin that is pressed, toward the center of the drum, by elastic means, and abuts, with at least one of its faces which is inclined with respect to the central rotation axis of the second connecting member, against at least one corresponding abutment face.

Abstract: A transmission unit particularly for driving screw feeders and auxiliary user devices of mixing trucks, comprising an off-center distribution device, which can be associated with an external power take-off and forms couplings for the connection of auxiliary user devices; a reduction unit, which is functionally connected to the off-center distribution device and can be associated with the screw feeders of a mixing truck; and a main friction clutch device, which is interposed between the off-center distribution device and the reduction unit, a device for reversing the direction of rotation of the screw feeders and an auxiliary friction clutch device for the reversing device.

Abstract: A linear actuator for vehicle power steering systems with at least three steered wheels of a double-acting type that comprises a cylindrical body, closed at opposite ends; a piston, accommodated inside the cylindrical body axially slideable between the ends; and a stem, rigidly associated with the piston, coaxial to the cylindrical body, and protruding from at least one of the ends, the piston dividing the cylindrical body into two chambers, each provided with an inflow/outflow opening formed at the two opposite ends; and at least one pair of one-way valves, provided in the piston with a respective inlet connected to a respective chamber and outlets mutually connected, each valve having a stem slideably accommodated in the respective inlet with one end associated with a respective flow control element and the opposite end that protrudes externally from the piston, so as to open a respective valve.