Abstract: This invention pertains to an oil brake that includes a piston (3) which is mounted on the free end of a movable tubular rod (4) that moves in a hollow cylindrical body (2), limiting, on both sides of the piston, a first working volume (21) and a second working volume (22), whereby a central rod (34) is arranged inside of tubular rod (4), whereby tubular rod (4) has at least one lateral opening (24) that connects second working volume (22) to first working volume (21) via a central passage (25) that is made between tubular rod (4) and central rod (34) and is formed by a relative difference in transverse dimensions between central rod (34) and the inside diameter of tubular rod (4), whereby opening or openings (24) are formed on tubular rod (4) at a distance from piston (3) that is essentially equal to at least half the thickness of the piston, whereby the end of hollow cylindrical body (2) is tightly closed by a plug and/or a stem guide (5) that is designed in such a way that, before the end of the expansion

Abstract: A fluid regulating device includes a valve housing formed with a piston receiving chamber that has a piston member slidingly and sealingly disposed therein to divide the piston receiving chamber into a volume-variable gas compartment filled with pressurized gas and a volume-variable fluid compartment. A regulator receiving chamber has a large-diameter rod receiving section, and a small-diameter fluid channel with a rate control section that is aligned with and that extends from the rod receiving section. The fluid channel interconects fluidly the rod receiving section and the fluid compartment.

Abstract: The present invention relates generally to front suspension fork assemblies for bicycles, and provides an improved suspension fork comprising an adjustable compression system for quick and easy adaptation to various types of terrain. The front suspension fork of the present invention comprises a pair of rigidly connected parallel fork legs, with each fork leg having at its bottom end a dropout for connection to the axle of a wheel. Each fork leg further comprises a shock absorber positioned therein and comprising a helical coil spring to urge expansion of the sliding tubes, flow dampers, and damping fluid within the cavities of the sliding tubes to dampen the movement of the sliding tubes in compression and expansion. Each flow damper comprises a flexible shim which opens in compression or expansion to increase the flow of damping fluid. Varying the flexibility of the shims also varies the damping effect of the shock absorber.

Abstract: A bicycle fork having a damping apparatus that includes a cylinder, a damping fluid and a piston. The cylinder defines a chamber. The damping fluid is located in the chamber. The piston is disposed in the chamber and is positioned adjacent the fluid.

Abstract: A damping apparatus for use in a bicycle fork includes two telescoping legs, a rebound piston and a compression piston. A damping fluid is provided in the apparatus. The pistons and legs define compression rebound and variable zones into which the fluid may flow to provide desired damping.

Abstract: A speed controlling hydraulic dampener comprises a tubular housing defining a closed cylindrical chamber for containing a hydraulic fluid. The chamber containing two separate pistons and piston rods that extend through sealed openings in the ends of the housing. The second piston is spring-biased. First and second orifices are provided in the wall of the housing which are connected by a tubular passageway. A special seal arrangement cooperates with the first piston rod and with the wall of the housing defining the cylindrical chamber. This seal includes a third orifice extending longitudinally therethrough and cooperating with this orifice is a flow-controlling needle valve that can be used to adjust the rate of flow of hydraulic fluid from a first portion of the chamber through the first orifice, the tubular passageway and the second orifice to a zone between the first and second pistons.