A magnetic suspension shock absorber is composed of an outer telescopic cylinder, a shaft rod, an inner telescopic cylinder and two sets of magnetic suspension units. Each set of magnetic suspension unit contains two magnets, and the corresponding surfaces of two magnets of each magnetic suspension unit are the same magnetic polarity. The magnets of two sets of magnetic suspension units are respectively combined with the outer telescopic cylinder, the shaft rod and the inner telescopic cylinder. Thus, when the inner telescopic cylinder is impacted by external force, two magnets of one magnetic suspension unit will be close to each other and produce mutual repulsion, thus achieving buffering and shock absorbing effects.

A back stop for a crane which eliminates operator's discomfort and adverse effects on surrounding environment due to generation of abnormal noise and enables greasing work to be facilitated. A back stop includes an outer casing having a base end portion turnably connected to a boom or a crane main body and an opening portion opened in the outer casing front end portion; an inner casing having a base end portion turnably connected to the crane main body or the boom and having a front end portion side slidably fitted into the outer case through the opening portion; and a greasing tube arranged in the outer casing or the inner casing. An inlet of the greasing tube is arranged outside of the outer casing or outside of the inner casing on the base end portion side on which the greasing tube is arranged. A discharge port of the greasing tube is attached to a front end portion of the inner casing.

The invention is a system for controlling the relative movement of a load P, comprising at least one main damper having a longitudinal action of stroke C and two ends with one end being connected to a frame and the other being connected to the load. A compensation device is included having at least one secondary damper of longitudinal action with two ends with one end being secured to the frame and the other end is connected to the end of the main damper connected to the load The secondary damper is arranged so that, at one point of stroke C, the secondary damper has an action orthogonal in direction to the direction of the movement.

The invention is a system for controlling the relative movement of a load P, comprising at least one main damper having a longitudinal action of stroke C and two ends with one end being connected to a frame and the other being connected to the load. A compensation device is included having at least one secondary damper of longitudinal action with two ends with one end being secured to the frame and the other end is connected to the end of the main damper connected to the load The secondary damper is arranged so that, at one point of stroke C, the secondary damper has an action orthogonal in direction to the direction of the movement.

The disclosure relates to a linear drive for an adjustment element of a vehicle, with a drive train for generating a driving force along a geometrical drive axis between two coupling points, one of the coupling points comprising a joint part for discharging the driving force, which joint part, in the mounted state, forms a ball and socket joint with a mating joint part, the joint part having a bearing portion, a joining part arranged thereon and a connecting portion arranged thereon. The connecting portion serves for the connection of at least one drive train component of the linear drive to the joint part and has at least one connecting formation which is in engagement with the relevant drive train component, and wherein at least one part of the bearing portion is configured integrally together with the joining part and the connecting portion from at least one plastics material.

A damping system comprises a door panel operably connected to a rail for movement along the rail. An apparatus is mounted to the rail for damping movement of the door along the rail at an end position. The damping apparatus comprises a base defining a chamber having a closed end and an open end, the base configured for securing the damping apparatus to the rail. A piston is slidably mounted in the chamber and extends from the open end of the base in a first position. The piston includes a cylinder, a piston head moveable within said cylinder, a piston rod connected to the piston head, and a compression spring disposed on the piston rod between the cylinder and closed end of the chamber. The damping apparatus is secured to the rail for engaging and slowing movement of the door panel in a direction along the rail at the position as the piston is moved in the direction from the first position to a second position.

A bicycle fork includes a pair of fork leg assemblies, each of the leg assemblies having an upper leg telescopingly engaged with a lower leg. A damping assembly is provided in at least one of the legs. The damping assembly includes lock-out and blow-off compression circuits. These compression circuits are externally adjustable without tools. Furthermore, these two compression circuits may be adjusted independently of each other.

The present disclosure relates to a vibration damper for a hydraulic clutch actuator. The vibration damper comprises a rigid housing comprising a chamber, and an inlet port and an outlet port forming a channel, the channel being in fluid communication with said chamber, and a propeller comprising a plurality of at least two blades, the propeller being rotatably mounted in said chamber, and a spiral torsion spring connected to said propeller in such a way that rotation of the propeller causes winding or unwinding of the spring.

A force damper arranged to progressively arrest a first force imparted by an object moving in a first direction, the force damper including a housing, a driving member and first and second resilient members. The housing includes a first end and a second end, the first end having a first surface, a second surface opposite the first surface and a first connection point secured to the first surface, and the second end having a through bore and a third surface opposingly disposed relative to the second surface. The driving member includes a first end, a second end and a shaft therebetween, the first end having a stop and the second end having a second connection point. At least one of the first and second resilient members is formed from a material that at least partially undergoes plastic deformation when the first force is arrested. The first and second resilient members are disposed between the stop and the third surface and impart a second force on the stop toward the second surface.

An insulator is implemented such that a lower structure member to be brought into contact with a floor surface allows an upper structure member on which a piano is placed to be suspended through a cantilever spring member and a first wire, and a second wire connects the upper structure member and the lower structure member to each other in the horizontal direction, and the insulator thus functions so as to maintain intrinsic sound generated by the piano by free vibration in pendulum motion using the upper end of the first wire as a pivot, and richness of the sound is enhanced and transmission to a floor surface is inhibited, and, further, vibration caused by a key and a pedal being operated by a performer is reduced by elasticity of the cantilever spring member and the tensile force that acts on any of the second wires, and the performer does not feel uncomfortable with the operation.