A damper including inner and outer tubes and a control valve. A piston is slidably disposed within the inner tube to define first and second working chambers. An intermediate member assembly is disposed annularly about the inner tube. An intermediate channel is positioned radially between the intermediate member assembly and the inner tube and a reservoir channel is positioned radially between the intermediate member assembly and the outer tube. A first unidirectional blocking valve forms a first partition between first and second intermediate channel portions of the intermediate channel. A second unidirectional blocking valve forms a second partition between the second intermediate channel portion and a third intermediate channel portion. An external control valve has a control valve inlet that is arranged in fluid communication with the second intermediate channel portion.

An exemplary shock absorber includes a damper tube, a damper piston, a piston shaft, and at least two different surface treatments. The damper tube includes an interior surface. The damper piston includes a piston surface that engages the interior surface. The piston shaft couples with the damper piston and includes a shaft surface that engages a fourth surface. The at least two different surface treatments are disposed on at least one of the interior surface and the shaft surface and create a corresponding plurality of coefficients of friction with at least one of the piston surface and the fourth surface respectively.

A ring circumscribing a moveable rod of a hydraulic damper, the moveable rod defining a central axis, the ring comprising a first circumferential surface, a second circumferential surface, a first finger, a second finger, a first flange, and a second flange. The first finger and the first flange defining a first end of the ring. The second finger and the second flange defining a second end of the ring.

A sealing ring includes a first sealing element having a first mating surface and a second sealing element having a second mating surface. A high-pressure boundary extends across at least a portion of the first sealing element and across at least a portion of the second sealing element, and a low-pressure boundary extends across at least a portion of the first sealing element and across at least a portion of the second sealing element. The first mating surface, the second mating surface, or both, includes a recess open to the low-pressure boundary and not open to the high-pressure boundary. The recess may include a groove, for example. The first mating surface is sealed against the second mating surface by a first force acting on the first sealing element and a second force acting on the second sealing element. These forces act to pressure-lock the assembly.

The damper assembly includes a tubular member, a rod, a primary piston, a secondary piston, and a resilient member. The tubular member includes a sidewall and a cap positioned at an end of the sidewall. The sidewall and the cap define an inner volume. The sidewall includes a shoulder separating the tubular member into a first portion and a second portion. The resilient member is disposed between the secondary piston and the cap and thereby is positioned to bias the secondary piston into engagement with the shoulder.

A gas cylinder actuator with safety device, which comprises: a tubular containment jacket, two opposing heads for closing the tubular jacket, with corresponding sealing elements between the heads and the jacket, a first head provided with a through hole for the passage of a stem-piston, and a second head provided with a gas filling duct, a stem-piston, between the tubular jacket, the heads and the stem-piston there being a chamber for pressurized gas; the second head has a seat for the accommodation of a flow control element of the gas filling duct and corresponding sealing means, the flow control element comprising a tab for controlling a retracting stroke of the stem-piston, the control tab protruding from a body that has a lightened portion for triggering a controlled fracture or deformation in the event the control tab is crushed by the stem-piston.

The present invention relates to a spring unit (1) for a shock absorber (100) intended for a vehicle. The shock absorber (100) comprises a damping cylinder (101), wherein the damping cylinder (101) is adapted to be telescopically arranged within the spring unit (1). The spring unit (1) comprises a hollow body (2) comprising at least one compression chamber (2b) and at least one additional chamber (3) arranged to be in fluid communication with the compression chamber such that at least a first flow of fluid (F1) is adapted to be allowed between the compression chamber (2b) and the additional chamber (3) when a threshold value is met. The invention further relates to a shock absorber (100) comprising such a spring unit (1), and a front fork comprising such a shock absorber (100) as well as a method for filling the shock absorber (100).

A piston housing unit comprises a housing with a longitudinal axis, a piston rod that is displaceable, in particular along the and/or around the longitudinal axis, a guide/damping unit for guiding and damping the displacement of the piston rod.

A piston housing unit comprises a housing with a longitudinal axis, a piston rod that is displaceable, in particular along the and/or around the longitudinal axis, a guide/damping unit for guiding and damping the displacement of the piston rod.

Providing a sealing member which can successfully scrape off foreign substances and prevent failure caused by incorporation of foreign substances. A dust seal serving as a sealing member includes a dust seal body and a lip member. The dust seal body has a predetermined elasticity and is retained in an opening of an outer tube into which an inner tube reciprocated in a projected state is inserted. The lip member is harder than the dust seal body and is attached to a distal end of the dust seal body. The lip member has a distal end which is brought into sliding contact with an outer peripheral surface of the inner tube.