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 speed retarding device for a rotary nozzle includes a hollow cylindrical housing and a rotatable tubular shaft rotatably carried by the housing. The shaft has a central axial bore and an enlarged drag sleeve portion carried in the housing. A pair of support bearings support the drag sleeve portion of the shaft in the housing. An annular inner seal between each of the support bearings and the drag sleeve portion defines a cavity within the housing receiving a viscous fluid confined within the cavity. The drag sleeve portion includes a peripheral helical groove and a plurality of axial bores extending therethrough parallel to the central bore, one or more blind axial bores each having a closed end an open end, and a piston disposed in each of the one or more blind axial bores each defining an air space between the closed end and the piston.

The invention relates to a vibration damper for a motor vehicle comprising an inner tube, an outer tube and at least one compensating chamber, which is formed between the inner tube and the outer tube and comprises at least one gas bag, which is arranged in the compensating chamber, wherein the compensating chamber is fluidically connected to at least one working area of the inner tube filled with a hydraulic fluid, wherein at least one guide element is provided, which deflects a flow of the hydraulic fluid during a rebound stage or a compression stage in such a way that the gas bag is indirectly subjected to flow. Furthermore, the invention relates to a motor vehicle.

A shock absorber includes a bearing unit having a bearing and a bearing holding member, and a seal unit having a seal member and a seal holding member. The seal holding member includes a seal accommodating portion being configured to accommodate the seal member, and an insertion hole through which a piston rod is inserted. The seal member is pressed against an outer circumferential surface of the piston rod and the seal accommodating portion by working-fluid pressure in the extension-side chamber. And the bearing is provided such that a first end surface of the bearing facing the seal member matches an aperture plane of a through hole of the bearing holding member or such that the first end surface of the bearing projects out from the aperture plane of the through hole.

A vehicle suspension system comprising a hydropneumatic strut comprising a fluid interface, where supply of hydraulic fluid to the strut via the fluid interface causes the overall length of the strut to increase, and withdrawal of hydraulic fluid via the fluid interface causes the overall length of the strut to decrease, a first displacement system in fluid communication with the fluid interface, capable of supplying and withdrawing fluid to and from the strut as well as measuring the volume of fluid supplied or withdrawn from the strut, a second displacement system in fluid communication with the fluid interface, and a hydraulic fluid source for selectively supplying or withdrawing hydraulic fluid from the hydropneumatic strut via either of the first or second displacement systems.

A suspension strut for a vehicle comprises: a first connector for connecting to a first point on the vehicle; a second connector for connecting to a second point on the vehicle; and a damper assembly adapted to provide a damping force as fluid flows through the damper assembly during relative compression between the first point and the second point, wherein the damper assembly comprises a side wall and a damper aperture in the side wall, wherein the damper aperture is open throughout operation of the strut to allow fluid to flow through the damper assembly.

The disclosure relates to a vibration damper comprising two adjustable damping valve devices, wherein a damping valve device is connected to a piston-rod-side working chamber via a fluid connection and a damping valve device is connected to a working chamber spaced apart from a piston rod within a cylinder filled with damping medium. A fluid connection between the damping valve device and the working chamber occurs via at least one tube element. Both adjustable damping valve devices are connected to a common balancing chamber for receiving the damping medium displaced out of the working chambers by the piston rod. A line block is connected to the cylinder, which forms a first fluid connection to the damping valve device for one of the working chambers and forms an intermediate tube, encasing the cylinder, for a second fluid connection to the damping valve device for the other of the two working chambers. The second fluid connection is also connected to the line block. Both fluid connections have a separate radial channel within the line block, each being connected to an inlet opening of the damping valve devices. A reducer part is arranged between the cylinder and the first fluid line of the line block, and the second fluid line runs within the line block within a projection surface of the cylinder.

Provided is a gas strut, including: an outer working space arranged radially to the stroke axis between the working cylinder and the equalizing cylinder, the outer working space being connected to the inner working space in a gas-conducting manner; an equalizing piston enclosing the working cylinder radially to the stroke axis, the equalizing piston) being mounted displaceably along the stroke axis, delimiting the outer working space on one side transversely to the stroke axis and being subjected to a pressure of the working medium and a pressure of the equalizing medium so as to increase the volume of the outer working space; and a restoring medium arranged in a restoring space radially to the stroke axis between the working cylinder and the equalizing cylinder, the equalizing piston being subjected to a pressure of the restoring medium so as to decrease the volume of the outer working space.

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 gas cup for a damper assembly comprises a body including an upper surface, a lower surface, an exterior surface and an interior surface. The body defines an aperture extending through the upper surface and the lower surface. A decoupler is located in the aperture and secured to the body. A bridging member is located between the decoupler and the body and coupled to the decoupler and the body. The decoupler and the bridging member is made from materials having different elasticity to allow the decoupler to move in the aperture in response to a volumetric change in the damper assembly and to provide variable tuning of the damper assembly. A damper assembly including the gas cup is also disclosed herein.