There is disclosed a suspension unit 100 comprising a body 110 defining a primary chamber 124 for containing a primary fluid; a piston arm 150 having a piston end 154 received in the body 110 to act on primary fluid in the primary chamber 124, wherein the piston arm 150 is moveable relative the body 110 between at least an extended configuration and a retracted configuration. There is a first gas spring chamber 160 within the piston arm 150 and a first moveable member 156 to vary a volume of the first spring chamber 160; a second gas spring chamber 162 separate from the piston arm 150 and a second moveable member 136 to vary a volume of the second gas spring chamber 162. In at least one of the extended configuration and the retracted configuration of the piston arm 150, a first damping chamber 158 is defined adjacent the first moveable member 156 and a second damping chamber 168 is defined adjacent the second moveable member 136. The first damping chamber 158 and the second damping chamber 168 are each in fluid communication with the primary chamber 124 via a common damping passageway 164 to receive primary fluid.

A method of on-demand energy delivery to an active suspension system is disclosed. The suspension system includes an actuator body, a hydraulic pump, an electric motor, a plurality of sensors, an energy storage facility, and a controller. The method includes disposing an active suspension system in a vehicle between a wheel mount and a vehicle body, detecting a wheel event requiring control of the active suspension; and sourcing energy from the energy storage facility and delivering it to the electric motor in response to the wheel event.

A bicycle fork includes a pair of fork leg assemblies, each of the leg assemblies having an upper leg telescopingly engaged with a lower leg. A damping assembly is provided in at least one of the legs. The damping assembly includes lock-out and blow-off compression circuits. These compression circuits are externally adjustable without tools. Furthermore, these two compression circuits may be adjusted independently of each other.

A damper assembly includes a tubular member including a sidewall and a shoulder. The damper assembly includes a rod and a piston coupled to the rod. A secondary piston has a second contact surface, an opposing second surface, an inner cylindrical face defining a central aperture that receives the rod, and an outer cylindrical face. The opposing second surface includes one or more surface grooves, extending between the inner cylindrical face and the outer cylindrical face along the opposing second surface, and one or more bypass orifices disposed about the body member. The bypass orifices extend along the inner cylindrical face between the second contact surface and the opposing second surface. The secondary piston defines a channel extending between the inner cylindrical face and an outer periphery of the body member. The channel and bypass orifices form a fluid flow path when the piston contacts the secondary piston.

A front bicycle suspension assembly having an inertia valve is described. The front bicycle suspension assembly may include at least upper and lower telescoping tubes and include a damping tube containing an inertia valve. The inertia valve may include an inertia mass movable along the outer surface of a valve shaft as the inertia valve moves between first and second positions.

A shock absorber includes a cylinder including a working chamber therein; a rod configured to be axially movably inserted into the cylinder; and a plurality of tanks configured to be integrally attached to the cylinder, wherein an interior of one of the tanks is comparted into a liquid chamber configured to be communicated with the working chamber and filled with liquid and an air chamber filled with gas, and a sub-air chamber configured to be communicated with the air chamber is formed in the other tank.

A damper includes an inner tube. The damper includes a piston slidably disposed within the inner tube. The piston defines a first working chamber and a second working chamber within the inner tube. The damper also includes an outer tube disposed around the inner tube. The outer tube defines an outer chamber between the inner tube and the outer tube. The damper further includes a cover member mounted on an outer surface of the outer tube. The cover member defines a collector chamber between the outer tube and the cover member. The damper includes a first control valve mounted on the cover member. The damper also includes a second control valve mounted on the cover member and spaced apart from the first control valve.

The invention relates to a vibration damper arrangement, in particular for damping compression and rebound forces on motor vehicles, which comprises a pressure medium cylinder (1), in which a piston (2) with a piston rod (3) is guided axially displaceably, which piston (2) divides the pressure medium cylinder (1) into a compression chamber (4) and a rebound chamber (5), a gas pressure accumulator (8) also being provided for volume compensation of the piston rod (3), which gas pressure accumulator (8) is connected to the compression chamber (4) by way of at least one first check valve (6) which can open toward the compression chamber (4), and a second check valve (7) which can open toward the rebound chamber (5) and, parallel thereto, at least one first controllable operating valve (12) being provided between the compression chamber (4) and the rebound chamber (5).

A vibration damper may include a damper tube and a damper piston disposed in the damper tube so as to be reciprocatingly movable. The damper tube may be connected to a piston rod extending out of the damper tube, and the damper piston may movably separate a first oil-filled damper chamber on a piston rod side from a second oil-filled damper chamber remote from the piston rod. A bottom element at one end of the damper tube seals the end of the damper tube. The bottom element may protrude into the end of the damper tube and thereby reduce oil volume of the second damper chamber.

The present disclosure relates to a rear shock absorber for a vehicle. The shock absorber may include a first end and a second end that slide telescopically relative to one another. A piston may be placed in fixed position relative to one of the ends. The first side of the piston may partially define a first chamber filled with a compressible fluid. The second side of the piston may partially define a second chamber filled with a substantially incompressible fluid. The substantially incompressible fluid may be under pressure and may lubricate a seal substantially surrounding a periphery of the piston.