A damper with inner and outer tubes and a piston disposed within the inner tube to define first and second working chambers. A fluid transport chamber is positioned between the inner and outer tubes. A collector chamber is positioned outside the outer tube. An intake valve assembly, abutting one end of the inner tube, is positioned inside the outer tube. An accumulator insert with an open end abutting the intake valve assembly is positioned inside the outer tube. The accumulator insert includes an accumulator sleeve, a floating piston, and a pressurized chamber. The floating piston is disposed inside the accumulator sleeve and the pressurized chamber is positioned between the floating piston and a closed end of the accumulator sleeve. An accumulation chamber is positioned between the intake valve assembly and the floating piston and the accumulator sleeve includes one or more apertures arranged in fluid communication with the collector chamber.

In a shock absorber, an outer case made of resin is disposed so as to cover an inner case made of metal, and the outer case forms a reservoir chamber for storing the hydraulic fluid between the outer case and the inner case. The outer case is supported by the inner case via protrusions, which are formed on either one of the outer peripheral surface of the inner case and the inner peripheral surface of the outer case so as to protrude toward and abut the other one of the outer peripheral surface of the inner case and the inner peripheral surface of the outer case.

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.

In a shock absorber 100, 200, an inner case 1 is biased in the axial direction relative to an outer case 2 made of resin by a spring 5, and the inner case 1 and the outer case 2 abut each other in the radial direction via ribs 2g, 8c.

To cause an appropriate damping force to work according to a relative displacement with a simple configuration. A movable inner cylinder 3 slidable in an outer cylinder 2 in an axial direction and having orifices 31 formed in its peripheral wall 31 is provided, a piston 5 around which a linear member 52 that generates a frictional force is wound is further provided in the movable inner cylinder 3, and a viscous liquid 7 is filled in the outer cylinder 2 including the inside of the movable inner cylinder 3. Accordingly, when the piston 5 moves together with the movable inner cylinder 3, a high damping force is not exerted, whereas when the piston 5 relatively moves in the movable inner cylinder 3, the high damping force is exerted owing to viscous friction between the piston 5 and the movable inner cylinder 3 and the viscous resistance of the viscous liquid passing through the orifices.

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.

Solar tracker systems include a torque tube, a solar panel attached to the torque tube, and a damper assembly. The damper assembly includes a housing defining first and second chambers, a first fluid passageway extending between the first and second chambers, and a second fluid passageway extending from the second chamber. A piston is moveable relative to the housing and a valve is positioned within the first chamber and moveable to passively control fluid flow. An active lock includes a shaft extending into the second chamber with a seal attached to the shaft. The shaft is selectively moveable between an unsealed position in which the seal is spaced from a chamber wall and a flow path is defined between the first fluid passageway and the second fluid passageway, and a sealed position in which the seal contacts and seals against the chamber wall to obstruct the flow path.

A damper assembly for a vehicle suspension system includes a first damper and a second damper. The second damper includes a housing including a wall that defines an aperture, the wall and the first damper at least partially defining a chamber. The second damper also includes a piston positioned within the chamber, a conduit defining a flow path that includes the aperture, and a flow control device disposed along the flow path. The second damper is configured to provide a damping force that varies based on the position of the piston within the chamber.

An oleo strut includes an outer cylinder forming a first fluid chamber and an inner cylinder forming a second fluid chamber. The inner cylinder is adapted for sliding concentrically within the outer cylinder in a longitudinal direction. An orifice plate, which is located within the inner cylinder, has holes for fluidly coupling the first fluid chamber with the second fluid chamber. A free-floating washer is constrained in a slot of the orifice plate adjacent the holes and is adapted to move in the longitudinal direction for alternatively blocking and unblocking at least a portion of the holes. During compression of the oleo strut, fluid pushes the washer away from the holes for reducing resistance to fluid flow. During extension of the oleo strut, fluid pushes the washer against the orifice plate covering at least a portion of the holes, which increases the damping force and reduces the extension speed.

A shock absorbing system for a bicycle front fork includes an outer tube and an inner tube which includes a piston located therein, and the lower end of the inner tube is movably inserted into the outer tube. A piston tube is connected between the lower end of the outer tube and the piston. The inner tube includes a first chamber and a second chamber formed therein with the piston located between the first and second chambers. A path formed between the piston and the piston tube. A manual valve is located in the piston tube and includes a rod and a movable part. The rod includes an extension section protruding beyond the outer tube. When the extension section is pushed, the rod moves upward to switch the path from a sealed status to an opened status, and the first chamber communicates with the second chamber.