A shock absorber according to one embodiment includes a damper case provided to hold an outer tube and an inner tube such that an upper end of the outer tube is positioned closer to a side on which a piston rod is disposed than an upper end of the inner tube. The damper case includes a damper housing portion that houses a damper unit, a compression-side communication path through which an inner side of the inner tube and the damper housing portion communicate with each other, an extension-side communication path through which an annular passage and the damper housing portion communicate with each other, and a passage opening which is formed on the opposite side to the piston rod of the outer tube. The extension-side communication path and the annular passage communicate with each other through the passage opening.

A shock absorber includes: a metal cylindrical outer tube; a rod inserted into the outer tube, the rod being capable of moving in the axial direction; a bump cushion attached to an outer periphery of the rod that protrudes from the outer tube; a synthetic resin bump stopper formed in a cap shape and fitted to one end in the axial direction of the outer tube, the bump stopper being configured to be abutted by the bump cushion during maximum compression; and a sacrificial corrosion part disposed between the outer tube and the bump stopper, the sacrificial corrosion part being configured to contact a metal surface of the outer tube. The sacrificial corrosion part is made of a metal having a higher ionization tendency than the outer tube, and thereby corrosion of members is suppressed.

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 present disclosure relates to a shock absorber having a pressure tube which defines a fluid chamber, and a piston assembly. The piston assembly is disposed within the fluid chamber and divides the fluid chamber into upper and lower working chambers. A reserve tube surrounds the pressure tube to define a reservoir chamber between the reserve tube and the pressure tube. The pressure tube is disposed between a rod guide assembly and a lower mount. A structural integrity of the pressure tube is greater than a structural integrity of the reserve tube, and the pressure tube further operates as a principal load bearing component for the shock absorber.

Solar tracker systems include a torque tube, a column supporting the torque tube, a solar panel connected to the torque tube, and a damper assembly. The damper assembly includes a first end pivotably connected to the torque tube and a second end pivotably connected to the column. The damper assembly further includes an outer shell, a piston within and moveable relative to the outer shell, a first chamber wall and a second chamber wall within the outer shell at least partially defining a chamber, and a valve within the chamber. The valve includes a first axial end defining a slot and is biased to a first position within the chamber in which the first axial end is spaced from the first chamber wall. The valve is moveable within the chamber from the first position to a second position to passively change a flow resistance of the damper assembly.

A gas cylinder actuator with overtravel safety device, comprising a tubular jacket for gas containment, which is closed hermetically at one end by a bottom provided with a gas filling valve and at the opposite end by a head portion, which is provided with a hole for the passage of a stem with a piston, the jacket, the bottom and the piston forming the gas expansion and compression chamber. The head portion comprises an annular body, which is fixed internally to the jacket, and is provided with a central hole for the passage of the stem with the interposition of dynamic sealing elements, static sealing elements being interposed between the annular body and the jacket and an element for controlling the descending motion of a slider of a press with which the actuator is associated being provided and protruding from the annular body or from the jacket, the control element being preset to selectively move or break or deform in order to break or deform or render ineffective in general the static and dynamic sealing elements.

A cylinder device includes a cylinder that has one end from which a piston rod extends, a pipe-shaped cover member that has an extendable bellows portion and a small-diameter portion whose inner diameter is smaller than an inner diameter of the bellows portion, the cover member being configured to protect the piston rod, and a capping member fitted into the cylinder, the capping member having a convex portion to which the small-diameter portion of the cover member is locked, at an outer periphery, wherein at the small-diameter portion of the cover member, a bulge portion that bulges outside in a radial direction is formed.

An end cap for a piston-cylinder unit with a base which has a through-opening and carries a seal, wherein at least one discharge channel extends radially proceeding from the seal, and wherein the discharge channel is constructed at the end cap on the inner side with respect to an outer cover surface.

A shock absorber includes: a bottomed cylindrical outer tube that is disposed so as to cover an inner case, and that is formed of a resin and is closed at one end by a closing part; a joint member that is embedded by insert molding in an opening end of the outer tube; and a coupling member that is coupled to the joint member.

A vibration damper for a vehicle is provided. The vibration damper includes at least one damping cylinder made from a fiber composite material; a guiding element for guiding a piston rod of a piston movably arranged in the damping cylinder. The guiding element is located in a guiding end region at one end of the damping cylinder. A fastening element for use in attaching the at least one damping cylinder to a vehicle is located at a fastening end of the cylinder. At least one of the two end regions of the damping cylinder is conical or wedge-shaped and its element has a corresponding external form that is conical or wedge-shaped. A conical or wedge-shaped clamping sleeve located around the conical or wedge-shaped end regions of the damping cylinder.