Described herein is a fluid circuit device. The device incorporates at least one pressure balancing valve located between at least two fluid volumes that can be in a pressure differential arrangement wherein the at least one pressure balancing valve acts to address a pressure differential by opening a fluid volume or volumes to a third pressure equalising volume. In use, the fluid circuit device may in one embodiment be used in an energy absorbtion apparatus.

A damper for a telescopic fork leg for a front fork of a vehicle, wherein the damper comprises a twin-tube cylinder and a piston rod assembly comprising a piston rod, wherein a first piston is attached to the inner end portion of the piston rod, wherein a second piston is attached to the piston rod between the first piston and an outer end portion of the piston rod, wherein the inner tube is provided with at least one outlet hole 19 through the wall of the inner tube, the outlet hole being positioned such that a sealing portion of the second piston at compression of the damper travels past at the at least one outlet hole, and wherein the inner tube is provided with at least one return hole through the wall of the inner tube, the at least one return hole being positioned such that it connects a chamber of the twin-tube cylinder to an outer volume of the cylinder.

Disclosed is a frequency sensitive type shock absorber including a piston rod reciprocating an inside of a cylinder and having a connection passage therein; a piston valve mounted on the piston rod and having a plurality of compression and rebound flow paths penetrating up and down thereof, and partitioning the cylinder into compression and rebound chambers; and a valve assembly mounted on the piston rod to generate a damping force that changes with frequency during a rebound stroke; wherein the valve assembly comprises: a housing coupled to the piston rod and having a pilot chamber in communication with the connection passage; a main retainer coupled to the piston rod and having a main chamber formed on an upper portion thereof in communication with the connecting passage; and a pilot valve coupled to the piston rod and disposed between the housing and the main retainer to partition the pilot chamber and the main chamber.

A magnetorheological damper, wherein the damper comprises a housing that is at least partially filed with a magnetorheological fluid, and a magnetorheological valve disposed within the housing. The valve includes a magnetically permeable core having at least one coil reservoir formed therein, and at least one conductor coil, wherein each conductor coil is disposed around a portion of the core within a respective one of the coil reservoir(s). The valve additionally includes a fluid flow path adjacent the conductor coil(s). The fluid flow path is structured and operable to allow the magnetorheological fluid to flow adjacent the conductor coil(s). The valve further includes at least one coil cover, wherein each coil cover is disposed over a respective one of the coil(s) such that the respective coil is protected from exposure to magnetorheological fluid flowing through the fluid flow path.

A shock absorbing device includes a control unit and a transmission unit. The control unit includes a first shaft and a second shaft which freely and rotatably extends through the first shaft. The first end of first shaft and the first end of the second shaft protrude beyond the shock absorbing device. The transmission unit includes a first bevel gear and a second bevel gear. The second shaft freely and rotatably extends through the first bevel gear. When the first shaft is rotated to drives the first bevel gear, the first bevel gear drives the second bevel gear to adjust the recovery damping of the shock absorbing device. When the second shaft is rotated, the compression damping of the shock absorbing device is adjusted. The cooperation of the first and second bevel gears makes the operation of the shock absorbing device be smooth and stable.

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.

The present invention relates to a hydraulic damper comprising a main tube; a main piston assembly; a base valve assembly; and a hydraulic compression stop assembly comprising an insert fixed on the base valve assembly, and an additional piston assembly apt to be introduced inside the first inner chamber of the insert at the end of the damper compression stroke to generate additional damping force. Said additional piston assembly comprises a piston rod extender fixed to the piston assembly or the piston rod at the side of the compression chamber, and a tenon fixed to said piston rod extender and radially displaceable with regard thereto, wherein said tenon is terminated with a first entry surface having diameter monotonically diminishing towards the compression end of said tenon, while the insert is provided with a second entry surface having diameter monotonically increasing towards the rebound end of the insert.

A piston assembly that includes a pair of piston members that are formed of compacted powdered metal. The piston members have sets of locking features that include alternating projections and recesses that are spaced circumferentially about and intersect a rod aperture that extends through the piston member. Each projection is formed along a projection axis, which extends radially from a center axis along which the rod aperture is formed, and has a pair of opposite side walls and an end wall that connects the side walls to one another on a side of the projection that is opposite the rod aperture. The recesses on each piston member are configured to matingly and frictionally receive the projections on the other piston member.

Described herein is a fluid circuit device. The device incorporates at least one pressure balancing valve located between at least two fluid volumes that can be in a pressure differential arrangement wherein the at least one pressure balancing valve acts to address a pressure differential by opening a fluid volume or volumes to a third pressure equalising volume. In use, the fluid circuit device may in one embodiment be used in an energy absorbtion apparatus.

A hydraulic damper assembly comprises a housing defining a fluid chamber. A piston is slidably disposed in the fluid chamber dividing the fluid chamber into a compression and a rebound chamber. A piston rod couples to the piston for movement between a compression and a rebound stroke. The piston has a compression surface and a rebound surface. The piston defines at least one compression channel, at least one rebound channel, and at least one additional channel. A compression valve covers the at least one compression channel. A rebound valve covers the at least one rebound channel. A proportional bleeding system located between the compression valve and the piston to establish a bleeding flow passage between the at least one rebound chamber and the at least one additional channel for reducing operation harshness of the hydraulic damper assembly. A piston for the hydraulic damper assembly is also disclosed herein.