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 shimmy damper assembly may comprise: a damper piston including a piston head, the piston head comprising a first permanent magnet, a shimmy cylinder including a second permanent magnet disposed on an axial surface of the shimmy cylinder, and a gland nut coupled to the shimmy cylinder, the gland nut including a third permanent magnet spaced apart axially from the second permanent magnet, the piston head disposed between the first permanent magnet and the second permanent magnet.

The present invention relates to a removable insert system (R) for a telescopic fork leg (1) of a bicycle, said telescopic fork leg (1) comprising outer and inner legs (1b, a), wherein said removable insert system comprises a piston and piston rod arrangement (6, 8) comprising a piston rod (8) arranged at least partly within a first tube (7), said removable insert system (R)being removably arranged within at least one of said inner legs (1a) such that, when being mounted in said inner leg,the removable insert system is adapted to form a damping system (D) with said inner leg, and wherein said inner leg and said first tube are both acted upon by a flow of medium created by compression and expansion movements of the fork legs, said damping system further comprising medium flow passages (C1, C2) that are parallel in relation to each other, and that run between the upper and lower sides of said piston (6)The invention also relates to a damping cartridge kit (DC) for upgrading a telescopic fork leg of a bicycle, said cartridge kit comprising a removable insert system (R).

A compressor for a shock absorber is provided, including a stretching mechanism and a clamping mechanism. The stretching mechanism includes a first main body and a second main body. The first main body is movably connected with the second main body. The clamping mechanism includes a first abutting assembly and a second abutting assembly which are configured to clamp the shock absorber.

Solar tracker systems include a torque tube, a solar panel attached to the torque tube, and a damper assembly. The damper assembly includes an outer shell, a first chamber wall and a second chamber wall within the outer shell at least partially defining a chamber, and a piston to direct fluid through the chamber. A valve is within the chamber that includes a first axial end, a second axial end, and a seal positioned on the first axial end. The damper assembly further includes a biasing assembly that biases the valve into a first position within the chamber in which the seal is spaced from the first chamber wall. The valve is moveable within the chamber from the first position to a second position in which the seal contacts and seals against the first chamber wall to prevent the flow of fluid through the chamber.

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.

In a hydraulic system which is biased to a minimum system pressure using a bias valve or other flow obstruction disposed in a tank line, there is provided in a bypass line to the bias valve an evacuating and filling valve through which the hydraulic system is first evacuatable and subsequently fillable with a hydraulic fluid. The valve closes the bypass when a differential pressure overcomes a preadjusted force of a spring element. For this purpose, the valve possesses a displaceably mounted valve body with an integrated throttle and a seal face which closes a through opening when the valve body is shifted against the bias force of the spring element due to the pressure difference.

A method and portable apparatus for servicing a shock absorber on a landing gear assembly of an aircraft in a weight-on-wheels state is disclosed. The shock absorber includes at least one chamber containing both hydraulic fluid and a gas in fluid communication with each other. The apparatus includes a source of gas and a source of hydraulic fluid. The amount of hydraulic fluid in the chamber is corrected, preferably such that the chamber is then filled with a known amount of degassed hydraulic fluid. A pre-set mass of gas is then delivered into the chamber under the control of a gas delivery system of the portable apparatus. More accurate servicing of a shock absorber may thus be provided since account is additionally taken of gas dissolved in hydraulic fluid. By delivering a pre-set mass of gas into the chamber, there is no need to rely on a measure of gas pressure or H-dimension (h) when servicing the shock absorber.

A hydraulic damper assembly comprises a main tube defining a fluid chamber. An external tube extends about the main tube defining a compensation chamber between the main and external tubes. A main piston, located in the main tube, divides the fluid chamber into a compression chamber and a rebound chamber. A piston rod couples to the main piston. A base valve, located in the compression chamber, couples to the main tube. A hydraulic compression stop, located in the compression chamber, includes an additional piston, an insert, and a fixing member. The additional piston couples to the main piston. The insert, located in the compression chamber, couples to the base valve. The insert has a main section and a terminal section. The terminal section having an external diameter that is less than an external diameter of the main section.

A damper assembly includes an outer tube and an inner tube disposed in the outer tube defining a fluid space therebetween. The inner tube defines an inner volume. A piston is slidably disposed in the inner tube and divides the inner volume into a rebound working chamber and a compression working chamber. An active rebound valve is fluidly connected to the rebound working chamber and the fluid chamber, and an active compression valve is fluidly connected to the reserve chamber and the compression working chamber. An intake assembly is positioned in the fluid chamber to control the fluid flow through the active rebound valve and into the compression working chamber during a rebound stroke and to control fluid flow from the compression working chamber through the active compression valve and into the rebound working chamber during a compression stroke.