A universal wheel driving system includes a sun gear provided to receive power from a power source mounted in a vehicle body, a ring gear to which a wheel is concentrically connected, a gear train engaged to the sun gear and the ring gear and configured to transfer the power between the sun gear and the ring gear while allowing relative motion between the rotation shafts of the sun gear and the ring gear, a carrier supporting a final pinion of the gear train and gear-meshing with the ring gear so that a position of the rotation shaft of the final pinion remains unchanged with respect to a position of the rotation shaft of the ring gear, and a suspension portion provided to support the carrier against the sun gear so that the ring gear and the carrier move up and down with respect to the vehicle body.

A spring rubber seat provided between a spring formed by winding a wire rod to elastically support a chassis and a spring seat where the spring is placed. The spring rubber seat includes an arc seat portion having a seat surface where the spring is seated; and a link portion that links one circumferential end with the other circumferential end of the seat portion to make the spring rubber seat in an annular shape.

A strut-type suspension device includes an upper support; a shock absorber that is supported by the upper support; a coil spring that is arranged surrounding the shock absorber, between an upper spring seat and a lower spring seat; and a bearing that is arranged between the upper spring seat and the upper support. The upper support includes a mounting portion that has a support surface for supporting the bearing. The support surface is inclined with respect to a plane perpendicular to a shock absorber axis.

A gas spring and gas damper assembly can include a gas spring and a gas damper. The gas spring can include a first end member, a second end member and a flexible wall that at least partially form a spring chamber. The gas damper can include first, second and third damper elements that are telescopically interconnected with one another. The first and third damper elements can be operatively connected to the first and second end members. The second damper element can be operatively supported between the first and third damper elements. First and second biasing elements can be operatively interconnected between the second damper element and one of the first and third damper elements. A method of assembling a gas spring and gas damper assembly is also included.

A gas spring and gas damper assembly can include a gas spring and a gas damper. The gas spring can include a first end member, a second end member and a flexible wall that at least partially form a spring chamber. The gas damper can include first, second and third damper elements that are telescopically interconnected with one another. The first and third damper elements can be operatively connected to the first and second end members. The second damper element can be operatively supported between the first and third damper elements. First and second biasing elements can be operatively interconnected between the second damper element and one of the first and third damper elements. A method of assembling a gas spring and gas damper assembly is also included.

A suspension strut for a vehicle has an air spring unit and a damper unit. The damper unit has a damper tube, which extends into a rolling tube of the air spring unit. The damper tube has supporting geometries distributed over its circumference, against which supporting geometries a radially expanded end of the rolling tube is supported. In order to support the rolling tube on the supporting geometries of the damper tube, a torsion element is provided. The torsion element is arranged between the radially expanded end of the rolling tube and the supporting geometries of the damper tube. The torsion element forms a form fit with the supporting geometries for the purpose of torque transmission.

A suspension strut for a vehicle has an air spring unit and a damper unit. The damper unit has a damper tube, which extends into a rolling tube of the air spring unit. The damper tube has supporting geometries distributed over its circumference, against which supporting geometries a radially expanded end of the rolling tube is supported. In order to support the rolling tube on the supporting geometries of the damper tube, a torsion element is provided. The torsion element is arranged between the radially expanded end of the rolling tube and the supporting geometries of the damper tube. The torsion element forms a form fit with the supporting geometries for the purpose of torque transmission.

An active damper system for damping high-frequency vibration excitation of the vehicle body, includes a damper bearing to support a vehicle chassis component on the vehicle body, wherein the damper bearing includes a first bearing element for fastening to the vehicle body and a second bearing element for fastening to the vehicle chassis component; an active actuating element connecting the first and second bearing elements; a first acceleration sensor for measuring an acceleration of the vehicle body; a control unit connected to the acceleration sensor and receiving a vertical acceleration of the vehicle body as input variable from the acceleration sensor, wherein the control unit influences the active actuation element. The active damper system includes a second acceleration sensor arranged on the second bearing element.

An active damper system for damping high-frequency vibration excitation of the vehicle body, includes a damper bearing to support a vehicle chassis component on the vehicle body, wherein the damper bearing includes a first bearing element for fastening to the vehicle body and a second bearing element for fastening to the vehicle chassis component; an active actuating element connecting the first and second bearing elements; a first acceleration sensor for measuring an acceleration of the vehicle body; a control unit connected to the acceleration sensor and receiving a vertical acceleration of the vehicle body as input variable from the acceleration sensor, wherein the control unit influences the active actuation element. The active damper system includes a second acceleration sensor arranged on the second bearing element.

An independent suspension for vehicles, in particular for transporting people and/or materials, including a hub defining a rotation axis of the wheel of the vehicle, an electric motor, operatively connected to the hub and configured to rotate the hub and a support element operatively connected to the hub and developing, with a planar shape, along its own main development direction transverse to the rotation axis of the wheel. The support element is arranged below the hub and the electric motor. The electric motor develops within a containment volume defined at least partially by the support element.