The present invention relates to an actuator system with a magnetic lead screw, comprises a magnetic rotor and a translator cylinder, the translator cylinder comprises a magnetic stator, the translator cylinder has a closed first end and a second end confined by a lid, the lid having a shaft opening for a shaft coupled to the magnetic rotor, wherein the magnetic rotor, when inserted in the translator cylinder, is arranged to translate a linear movement of the translator cylinder into a rotational movement of the magnetic rotor by using magnetic flux interacting between the magnetic stator and the magnetic rotor, said rotational movements is being transferred through a shaft, the lid with a shaft opening arranged for receiving the shaft, wherein the shaft is arranged to make both the linear and the rotational movement in the shaft opening, the lid being arranged for confining the second end of the translator cylinder, the translator cylinder confined by the lid forms, when divided by the magnetic rotor, a first chamber with a first volume and a second chamber with a second volume, wherein the first volume and the second volume changes as a function of the linear movement. The invention also relates to a method of operating an actuator system with a magnetic lead screw.

A regulating device is for use in a drill string between a drilling machine and a drill bit. The regulating device has a tubular female portion which at least partly encloses a tubular male portion; a helical coupling between the female portion and the male portion to allow a telescoping movement of the regulating device in both directions between a fully extended position and a fully retracted position, the movement of the regulating device occurring when there is a difference in rotational speed between the female portion and the male portion; a first biasing device which is arranged to exert a driving force to drive the regulating device towards its extended position; and a second biasing device.

Shock absorption assemblies are provided. A shock absorption assembly includes an air shock that has a valve body. An air spring tube defines an air spring chamber. A piston rod extends through the air spring chamber to an oil piston head. An air piston head movably coupled to the piston rod. An oil damper tube is coupled to the piston head and is movable relative to the piston rod and the air spring tube. The shock absorption assembly further includes a mechanical spring disposed radially outward from, and that annularly surrounds, at least a portion of the air shock.

A shoe includes a first plate and a second plate that are located in a portion of the shoe between an upper and an outsole of the shoe, and a nest formed as a bag filled with one or more gasses located between the first plate and the second plate. The shoe may further include one or more springs located in cavities in the gas filled nest for biasing the first plate and the second plate apart from each other. Pods may be located within the openings in the center of the springs, and the pods may be filled with one or more gasses. The pods may protrude from a bottom or a top surface of the nest. Spring sandwiches including one or more springs positioned between plates may be constructed and placed in various portions of a shoe. The shoe may also include piping with lights.

A movement control device comprising a housing with an elongate push rod mounted therein for reciprocal movement along a longitudinal axis between first and second positions, wherein the push rod extends out of said housing in both the first and second positions. A spring comprising a primary axis operable to provide a biasing force on the push rod is further provided in the housing. A damping device comprising a primary axis is located in the housing, wherein the damping device is in continuous engagement with the push rod through its reciprocating movement. The primary axis of the spring and the primary axis of the damping device are not coaxial.

A hydraulic damper including a tube defining a chamber. The tube has a main section and a narrowed section. A main piston assembly is disposed in the main section and connected to a piston rod. A resisting mechanism is fixed to the piston rod. A secondary piston is moveable into the narrowed section. An inner surface of the secondary piston defines at least one radially internal channel. The piston rod defines an annular recess. The secondary piston includes a locking mechanism axially slideable within the annular recess. The secondary piston is axially moveable between a hydraulic stop engagement stroke wherein the secondary piston engages the resisting mechanism and restricts the flow of fluid through the radially internal channel, and a hydraulic stop disengagement stroke wherein the secondary piston is spaced from the resisting mechanism and allows the flow of fluid through radially internal channel.

A device for damping vibrations may comprise a hollow damper tube, a piston rod with a piston fastened thereto, at least one spring plate, and at least one securing element. The piston may be disposed within the damper tube, and the spring plate may be disposed outside the damper tube. To achieve a reliable connection between the spring plate and the damper tube in a cost-effective manner, the spring plate may be connected to the damper tube in both a force-fitting manner and a form-fitting manner. The present disclosure further concerns motor vehicles that employ such devices, as well as methods for fastening spring plates to damper tubes.

The invention relates to an industrial truck comprising a mast (8), a load-carrying apparatus (36), which can be moved upwards and downwards thereon and which has at least one load-receiving means for receiving a load that is to be transported, and a support structure (24) connecting the load-receiving means to the mast (8), the load receiving means having a load-carrying arrangement (41) connected to the support structure (24), and a device for reducing vibrations, characterised in that the device for reducing vibrations has at least one load support (50), which covers the load-carrying arrangement (41) at the top at least in regions, on which support a load received by the load-carrying apparatus (36) can be supported and which support is provided so as to be movable to a limited extent on the load-carrying arrangement (41) such that it can perform vibration-reducing movements relative to the load-carrying arrangement (41).

A shock absorber is provided that includes a shock body and a shaft assembly. The shock body has an inner chamber. The inner chamber is defined by a cylindrical interior surface. At least one groove is formed in the interior surface within at least one select length of the shock body. A piston of the shaft assembly is received within the inner chamber of the shock body. The piston includes valving to allow dampening matter that is received within the inner chamber to pass through the piston to allow the piston to move within the inner chamber. The at least one groove that is formed within the interior surface is configured to allow at least some of the dampening matter to bypass the valving of the piston to allow the piston to move through the at least one select length with less resistance.

A process of making a family cell of homogenous inner bladders with varying elasticity includes a forming a plurality of inner bladders from a first material with a first elasticity. The inner bladders have interior surfaces during inner chambers and exterior surfaces exposed to an outside environment. The inner chambers are configured to store a fluid. A family cell is formed by fluidly connecting the inner bladders. One or more hybrid bladders are selected from the inner bladders and a second material having a second elasticity is applied to the hybrid bladders. The second elasticity is less than the first elasticity, such that the second material reduces the elastic qualities of the hybrid bladder.