The invention relates to a roll-up traction mat (10) for a vehicle (V) having at least one wheel (R1), said traction mat comprising a main track portion (12), and a track starter tab (20) that is fastened to one of the ends of the main track portion (12) by a hinge-forming connection portion (22) arranged to lower the track starter tab relative to the main track portion, by means of which the track starter tab can be positioned at the bottom of a rut (O) in which said wheel of the vehicle is stuck. The track starter tab comprising a plurality of transverse stiffener elements and a top face provided with studs. The track starter tab and the main track portion are constituted by at least one textile layer covered in a polymer layer.

A hub arrangement for twin wheels comprises a stationary carrier; an intermediate hub which is rotatable about an axis of rotation and which can be driven by a drive shaft; a differential gear having an input which is connected to the intermediate hub; a first wheel hub which is connected to a first output of the differential gear; and a second wheel hub which is connected to a second output of the differential gear. The hub arrangement furthermore comprises a first braking apparatus which is effective between the stationary carrier and the intermediate hub and a second braking apparatus which is effective between the stationary carrier and the second wheel hub or between the intermediate hub and the second wheel hub. In this respect, the first braking apparatus and the second braking apparatus can be actuated separately from one another.

A vehicle wheel drive device includes: a rotary electric machine that is received on a radially inner side of a vehicle wheel shaped in a cylindrical tubular form and is configured to rotate the vehicle wheel; and a brake device that includes a brake disc and a brake caliper. The brake device is configured to generate a braking force relative to the vehicle wheel. The rotary electric machine includes a rotor and a stator which are opposed to each other in a radial direction. A hollow space is formed on a radially inner side of a magnetic circuit unit that is formed by the rotor and the stator. The brake device is placed in the hollow space in a state where the brake caliper is fixed to an axial end surface of the stator which faces in an axial direction, and the brake disc is rotatable integrally with the rotor.

The device for mounting a bicycle wheel comprises a pin having a longitudinal axial through hole. A first free end portion of the pin has a threading. A second free end has a pin head. A lever for rotating the pin is housed in the axial through hole and is axially moveable between two operative positions. The lever has a first lever element housed in the axial through hole in the two operative positions, and a second lever element, pivoted to the first lever element about an axis perpendicular to the longitudinal axis, that is housed in the axial through hole when the lever is a first operative position, and that is positioned outside the axial through hole when the lever is in a second operative position for allowing a torque transfer between lever and pin following the rotation of the second lever element about the longitudinal axis.

A hub arrangement for twin wheels comprises a stationary carrier; an intermediate hub which is rotatable about an axis of rotation and which can be driven by a drive shaft; a differential gear having an input which is connected to the intermediate hub; a first wheel hub which is connected to a first output of the differential gear; and a second wheel hub which is connected to a second output of the differential gear. The hub arrangement furthermore comprises a first braking apparatus which is effective between the stationary carrier and the intermediate hub and a second braking apparatus which is effective between the stationary carrier and the second wheel hub or between the intermediate hub and the second wheel hub. In this respect, the first braking apparatus and the second braking apparatus can be actuated separately from one another.

A hub-bearing assembly provided with a bearing unit and a rotatable rotor-hub. The bearing unit includes a stationary radially outer ring, a couple of rotatable radially inner rings, and a double row of rolling elements, wherein the rolling elements are interposed between the outer ring and the inner rings, whose centers are located along a first circle having a radius, with respect to a symmetry axis of the assembly. The rotor-hub is made of a light alloy. A tubular portion is assembled on top of the radially inner rings. The tubular portion is steadily fixed a flange portion, axially external and includes a plurality of fixing holes. Axes of the fixing holes are located along a second circle defined by a radius respective to the symmetry axis of the assembly. The radius of the first circle (rolling elements) is greater than the radius of the second circle (fixing holes).

The invention relates to a roll-up traction mat (10) for a vehicle (V) having at least one wheel (R1), said traction mat comprising a main track portion (12), and a track starter tab (20) that is fastened to one of the ends of the main track portion (12) by a hinge-forming connection portion (22) arranged to lower the track starter tab relative to the main track portion, by means of which the track starter tab can be positioned at the bottom of a rut (O) in which said wheel of the vehicle is stuck. The track starter tab comprising a plurality of transverse stiffener elements and a top face provided with studs. The track starter tab and the main track portion are constituted by at least one textile layer covered in a polymer layer.

A quick release skewer assembly including a skewer shaft with a first end portion and a second end portion axially spaced from the first end portion, a first clamping element connected to the first end portion with a first grip face, a clamping assembly adjacent the second end portion including an anchor element, and a second clamping element with a second grip face. The first grip face is axially separated from the second grip face by a grip distance. The first clamping element is axially and rotationally engaged to the skewer. The anchor element is threadably connected to the skewer shaft such that the grip distance may be selectively threadably adjusted. The clamping assembly is operative to selectively displace the second grip face in a generally linear and axial direction between: (i) an open orientation where the grip distance is axially expanded and distal; and (ii) a closed orientation where the grip distance is axially contracted and proximal relative to the open orientation.

A planetary wheel end includes a planetary gear set, a rotatable axle shaft, a rotationally fixed axle tube surrounding at least a portion of the axle shaft, and a planetary gear carrier arranged for fixing to a wheel. The planetary gear set includes a radially inner sun gear, a radially outer ring gear and a plurality of planet gears drivingly engaged with the sun gear and the ring gear. The axle shaft is rotationally fixed to the sun gear and the axle tube includes a spindle rotationally fixed to the ring gear. The planetary gear carrier includes a plurality of planetary shafts and each one of the planet gears is rotatable about a respective one of the planetary shafts. In an example embodiment, each one of the plurality of planet gears has a respective radial needle bearing disposed on the respective one of the plurality of planetary shafts.

A power transmission device includes: a spindle case that includes a central hole through which an axle shaft penetrates in a central portion and forms a brake chamber in a region around the axle shaft at a base end portion; a wheel hub that is rotatably supported by an outer circumference of the spindle case and includes a final chamber, between the final chamber and the brake chamber, oil can flow, by communicating with the brake chamber through the central hole of the spindle case; a wet type brake mechanism that is contained in the brake chamber and operates so as to apply braking on rotation of the axle shaft with respect to the spindle case; and a deceleration mechanism that is contained in the final chamber and decelerates the rotation of the axle shaft to transmit the rotation to the wheel hub.