Described herein is a fluid flow control device comprising: a central structure, a main piston disposed around the central structure, wherein the main piston has at least one vent, a boost valve, wherein the boost valve has a gap fit to receive fluid, a shim stack disposed between the main piston and the boost valve such that the at least one vent is covered, a piston disposed on top of the gap of the boost valve, a spring disposed to bias the piston against the boost valve, and a pilot chamber running through the central structure, the pilot chamber fluidly coupled to the gap.

Described herein is a pressure balanced valve comprising: an armature, wherein the armature has an inlet channel, at least one aperture, and a pressure feedback pin disposed within a hollow interior of the armature, a poppet slidably disposed within the hollow interior and around the pressure feedback pin to enable fluid communication between the pressure feedback pin and the poppet, the poppet and the pressure feedback pin cooperatively comprising the pressure balanced valve, wherein the poppet has at least one channel therethrough, and a biasing spring fit to bias the poppet towards closing the inlet channel.

Disclosed is a damping force variable valve assembly capable of improving linearity of a damping force through pressure control by being provided as a poppet type built in a shock absorber and by improving the responsiveness so that a check valve responds and opens quickly by a minimum load.

A valve seat member is provided with: a first seat arranged so as to be spaced apart from an opening of a port; a second seat connected to the first seat at both ends so as to surround the opening of the port; an island portion arranged on the first seat side of the opening of the port in a region surrounded by the first seat and the second seat such that a hollow space is formed between the island portion and the first seat; and a passage configured to extend through the island portion to allow communication between the port and the hollow space.

A damping force variable shock absorber of the present disclosure is disclosed. The damping force variable shock absorber includes a cylinder having an inner tube and an outer tube filled with a fluid, a housing coupled to a lower end of a piston rod located inside of the inner tube and forming a connection passage therein, a magnet member provided inside the housing, a plunger moving by magnetic force of the magnet member, a first piston valve coupled to the outside of the housing to divide a compression chamber from a rebound chamber, and a second piston valve provided in the housing, wherein the connection passage is provided such that at least a part of the fluid flowing toward the first piston valve is bypassed to the second piston valve side by the opening and closing of the plunger.

The present disclosure relates to a shock absorber with hydraulic load regulation with a rod ending in a pin, which incorporates a longitudinal channel such that the shock absorber includes a frequency amplifier which, in turn, includes a housing, a floating piston which slides along the inside of the housing achieving a seal, and a pressure control valve, wherein the pressure control valve is configured to open when the amplifier chamber reaches a certain pressure level, enabling the outlet of fluid from the amplifier chamber such that the pressure of the amplifier chamber acts on the floating piston, which moves to regulate the flow of fluid through the piston by means of an elastic element acting on valves.

The present disclosure relates to a frequency sensitive shock absorber, and the frequency sensitive shock absorber includes a piston rod coupled so that one side is located inside a cylinder and the other side is located outside the cylinder, a main valve coupled to the piston rod and partitioning an inner space of the cylinder into a compression chamber and a tension chamber, a sub-piston rod coupled to one side of the piston rod and interlocked with the piston rod to reciprocate along a longitudinal direction of the cylinder, and a sub-valve module coupled to the sub-piston rod and generating a damping force according to a frequency during a tension stroke.

A hydraulic damper spool valve (15) includes a pair of resilient energy storage members (47, 49) one of which is disposed between each of a valve spool (39, 41) and a valve body dividing section (27) so as to bias the valve spools (39, 41) in opposing directions to the forces generated by the operating pressures in the hydraulic fluid of the hydraulic damper (1). The valve spools (39, 41) are configured to vary the hydraulic flow restriction between the upper portion (11) and the lower portion (13) of the hydraulic damper (1). A compression hydraulic flow path is structurally separate from a rebound hydraulic flow path to prevent backflow via the other hydraulic flow path during hydraulic flow in either direction, each said flow path communicating with only the at least one shaped aperture (35, 37) adjacent the opposing end of one of the valve sleeves (23, 25).

Described herein is a bypass port piston comprising: a main damping piston, wherein the main damping piston has a plurality of standard ports, wherein the main damping piston has at least one bypass port, face shims disposed on at least one side of the main damping piston such that fluid flow through the plurality of standard ports is restricted, at least one check spring coupled to the main damping piston, at least one check shim disposed to cover the at least one bypass port and coupled to the at least one check spring, wherein the at least one check spring keeps the at least one check shim in an open position, and a position sensitive spring disposed to close the check shim as the main damping piston is pressed against the position sensitive spring.

A wireless active suspension system with at least one wireless sensor coupled with at least one unsprung mass of a vehicle is disclosed. The system also includes at least one damper comprising an active valve, the damper being part of a vehicle suspension. The system additionally includes, at least one controller, the at least one controller in wireless communication with the at least one wireless sensor and the at least one damper, wherein the at least one controller receives the sensor data from the at least one wireless sensor and communicates an adjustment command to the active valve to modify a damping characteristic of the at least one damper.