A bumper cap assembly for an electrically adjustable hydraulic shock absorber. The bumper cap assembly includes a printed circuit board assembly and a bumper cap. The printed circuit board assembly includes power drive electronics and is electrically coupled to the shock absorber. The bumper cap defined a gap, wherein the printed circuit board assembly is housed within the gap.

The subject invention relates to an air spring height measurement arrangement comprising a magnetic field transmitting arrangement (110) and a magnetic field receiving arrangement (120). The magnetic field transmitting arrangement is adapted to adopt a first state and a second state with regard to the magnetic field receiving arrangement. One of the magnetic field transmitting arrangement (110) and the magnetic field receiving arrangement (120) comprises a first coil (141) and a second coil and the other comprises a third coil (143). A first central axis (161) of the first coil and a second central axis (162) of the second coil enclose a first angle (171) and, in the first state, a third central axis (163) of the third coil (143) and the first central axis enclose a second angle (172), which first and second angle cannot be 0.

A shock absorber for a vehicle having a damper and a first and second springs mounted coaxially around the damper and a preload adjuster for partially compressing at least one of the springs independently of the compression stroke. In one embodiment the preload adjuster is remotely controllable. In another embodiment the shock absorber includes an additional mechanism for preloading at least one of the springs.

The present invention reveals a distance sensor comprising: a signal receiving unit, an electromagnetic wave transmitting unit, and a magnetic signal transmitting unit; wherein the signal transmitting unit is adapted to transmit to the signal receiving unit a sensed distance between the signal receiving unit and the magnetic signal transmitting unit, wherein the magnetic signal transmitting unit further comprises an electromagnetic wave receiving unit and an electromagnetic wave-to-electric power converter, and wherein the electromagnetic wave receiving unit receives electromagnetic waves transmitted from the electromagnetic wave transmitting unit to operate the magnetic signal transmitting unit.

A suspension system (20) is described for vehicle with a frame, comprising an element (R, 12) propulsive by rolling on the ground; two units (12a, 12b) adapted to impart a torque to the propulsive element that are controllable independently of one another, where the two units are movable relative to the propulsive element independently from one another and rigidly connectable to the frame at one same point (P). By moving one or each unit relative to the propulsive element the distance between the latter and said point is made to vary.

The subject invention relates to an air spring height measurement arrangement comprising a magnetic field transmitting arrangement (110) and a magnetic field receiving arrangement (120). The magnetic field transmitting arrangement is adapted to adopt a first state and a second state with regard to the magnetic field receiving arrangement. One of the magnetic field transmitting arrangement (110) and the magnetic field receiving arrangement (120) comprises a first coil (141) and a second coil and the other comprises a third coil (143). A first central axis (161) of the first coil and a second central axis (162) of the second coil enclose a first angle (171) and, in the first state, a third central axis (163) of the third coil (143) and the first central axis enclose a second angle (172), which first and second angle cannot be 0.

A simple and robust suspension arrangement is provided for taking into account different suspension modes without the need for excessive sensoring or electronics. The novel suspension arrangement includes a first suspension element, which directly suspends the object to the frame, and a second suspension element, which suspends the object to the frame through a magnetic coupling between the object and the second suspension element. The magnetic coupling provides a magnetic coupling force (F.sub.h) to act as a threshold such that the suspension arrangement is designed to magnetically decouple the second suspen-sion element from the object when the excitation force (F.sub.e) transmitted be-tween the frame and the object exceeds the magnetic coupling force (F.sub.h).

A shock assembly is disclosed. The assembly includes a damper chamber having an outer wall with a first inner diameter (ID). A secondary chamber within the damper chamber, the secondary chamber comprising an exterior wall with an external diameter (ED) less than the ID of the outer wall to form an annular region therebetween. A damping piston coupled to a piston rod, the damping piston disposed in the secondary chamber and axially movable relative to the secondary chamber, the damping piston to bifurcate the secondary chamber into a compression side and a rebound side. A valve to control a flow of a working fluid between the annular region and the secondary chamber.

A stroke sensor detects a distance between a first member and a second member provided movably toward and away from the first member. The stroke sensor includes a magnetism generator provided in the first member and configured to generate magnetism, a magnetic body provided in the second member and configured to be biased toward the magnetism generator by a magnetic force generated from the magnetism generator, and a pressure detector provided in the second member, held in contact with the magnetic body biased by the magnetic force from the magnetism generator and configured to detect the distance between the first and second members on the basis of a change of a pressure acting from the magnetic body.

A robotic work tool system (200) comprising a robotic work tool (100), said robotic work tool (100) comprising two front wheels (130) and a chassis (140), wherein said robotic work tool is characterized in that the two front wheels (130) are arranged on a beam axle (145) being pivotably arranged to the chassis (140).