A suspension actuator includes a first housing part, a second housing part, a ball screw actuator that is connected to the first housing part and to the second housing part, and an air spring membrane that is connected to the first housing part and to the second housing part. The air spring membrane includes a flexible material and a reinforcing structure that is disposed within the flexible material to resist torsion loads that are applied to the second housing part by the ball screw actuator.

A shock absorber includes a cylinder sealed with a working oil liquid, a piston slidably fitted in the cylinder, a piston rod connected to the piston and extended to the outside of the cylinder, and a plurality of passages through which the working oil liquid flows due to the sliding of pistons therein, and a damping force generating mechanism that is provided in a part of the passages and suppresses the flow of the working oil liquid to generate a damping force. The damping force generating mechanism includes a valve body through which the passage penetrates, an annular seat that projects from the valve body and surrounds the passage, and a disc that can be seated on the seat. A contact width at which the disc and the seat come into contact with each other is different depending on a position in the circumferential direction. As a result, it is possible to obtain a shock absorber capable of suppressing a sudden change in damping force before and after the opening of the disc valve without having a complicated structure.

Shock absorber having a main sheath and a main piston sliding inside the main sheath in a sliding direction (X-X), the main piston including a main rod coming out of the main sheath and a main head contained inside the main sheath, the main sheath being filled with hydraulic fluid, a secondary sheath fluidically connected to the main sheath and provided with at least one damping valve, where the secondary sheath is connected to the main sheath by a first and a second passage placed at opposite ends to the main head of the main piston, along the sliding direction (X-X), the secondary sheath including a control valve movable, according to a regulation stroke, between an unlocking position, in which it does not interfere with the first and second passages, and a blocking position, where it occludes the first and second passages so as to realize a selective two-way block.

A damper valve with an adjustable effective stiffness of a shim. The damper valve includes a piston. The piston has a fluid path formed therethrough. A shim is disposed proximate the fluid path formed through the piston. A stiffness adjustment feature is coupled to the shim, and the shim is disposed between the piston and the stiffness adjustment feature. The stiffness adjustment feature is configured to adjust the effective stiffness of the shim without affecting a preload applied to the shim.

An elastomer bushing for an elastic bearing of a drive train component of a wind turbine, in particular of a gearbox on a housing, such as a machine carrier, of a wind turbine, may include two half-shells each made of an elastomer part having a Shore hardness of more than 85 Shore A. At least one of the half-shells may have an axial rigidity varying in the direction of its longitudinal axis.

A vehicle damper assembly is disclosed. The damper includes a cylinder having an inner diameter (ID). A rod and a piston, the piston coupled to the rod and configured to divide the cylinder into a compression side and a rebound side. An electronic valve assembly including an electronic valve body coupled with the rod on the compression side of the piston. The electronic valve body having an electronic valve body outer diameter (OD). A boost valve having a boost valve body, a boost valve area located between the electronic valve body and the boost valve body, the boost valve having a boost valve OD. The boost valve OD is larger than the electronic valve body OD, such that the boost valve is configured to allow the electronic valve assembly to operate within said cylinder ID that is too large for the electronic valve body OD.

A rapid active vibration reduction method for a high-speed motion stage includes acquiring motion parameters of a motion body of the motion stage in current motion; determining a vibration reduction mode of a vibration reduction device according to the motion parameters; and controlling an action end of the vibration reduction device to contact with the motion body of the motion stage or contact with a driving device for driving the motion body to move based on the vibration reduction mode, so that a contact friction force used for suppressing vibration of the motion body is generated. Realizing vibration reduction by means of active friction can reduce vibration of the motion body in a specific stage needing vibration reduction, and the action end of the vibration reduction device does not need to contact with the motion body or does not need to contact with the driving device before vibration reduction.

The present invention relates to a shock absorber with multiple damping laws including a regulating body with a primary valve and a secondary valve, and an activating shaft with a plurality of channels, the activating shaft being housed in an axial orifice of a piston pin that incorporates a plurality of orifices intended to align by rotation of the activating shaft with the channels to determine a damping law and, with the second orifice in direct communication with the regulating body, wherein the regulating body includes a floating piston that has a toroidal configuration and is made of an elastic material, so that it gradually transfers a force to the primary valve depending on the pressure to which it is subjected.

An assembly for damping switching movements has a housing, which physically surrounds at least one piston, and which at least partly physically surrounds at least one rod. The rod is movable relative to the housing. The piston delimits a first fluid volume, which is fluidically connected to a second fluid volume by way of a throughflow opening. The rod is formed at one end as a hollow tube and physically surrounds the first fluid volume. The piston is guided in the hollow-tubular end of the at least one rod. A method for damping switching movements in a high-voltage circuit breaker includes decreasing a damping rate of the assembly for damping in a period in the time profile of the switching movement, in particular after a previous increase in the damping rate during the switching movement.

Provided is a valve device and a shock absorber that can prevent them from being in a failure state at the normal time and can freely set a passive valve even when both pressure control and passage opening/closing are performed by a solenoid valve. For this reason, the valve device includes a first passage and a second passage connected downstream of the pressure introducing passage, a solenoid valve that opens the first passage to control the upstream pressure and closes the second passage when energized, and that closes the first passage and opens the second passage when not energized, and a passive valve provided downstream of the solenoid valve in the second passage.