Abstract: A method of producing a vane damper comprising a body including a space for at least one rotatable vane that divides the space into two part spaces that are located on either side of the vane. The spaces are variable because of the rotatability of the vane. The vane is mounted in the body by a bearing member and operates in a working medium that is located in the space. The working medium is transferable between the variable spaces via a passage or at least one throttle function to produce damping. The method includes producing the vane with associated bearing member by extruding aluminum or aluminum-containing alloy. The extruded product is cut for production of the respective vane with associated bearing member. The vane is provided with sealing members for establishing a seal against surfaces of the space and of the bearing member.

Abstract: A number of embodiments of hydraulic shock absorbers, including a damping arrangement that includes a cavity and an elastomeric member received in the cavity which cooperates with the fluid chamber so as to permit small degrees of relatively undamped fluid flow to improve road holding.

Abstract: A shock absorber has a cylinder with a piston and piston rod arrangement in the cylinder. Working medium can be guided in different flow paths via shim stacks for the purpose of obtaining different dampings based on the position of the piston. The piston arrangement can have a piston supporting shim stacks. One or more further shim stacks are arranged in a unit which is separate from the cylinder. In at least one of the shock absorber strokes, the working medium can be conveyed via the shim stack(s) in the unit separate from the cylinder.

Abstract: A shock absorber has an arrangement for bringing about different kinds of damping characteristics, in response to external controls and independently of how the piston speed varies. The shock absorber comprises a piston which works in a cylinder (2) and which has a passage between upper and lower sides (1a, 1b) of the piston. The changes in the damping characteristics are obtained by a restriction in a channel through which a shock absorber medium or fluid flows. A first valve element (7) exerts an influence on the restriction in response to a first pressure which is created by a pilot flow running between the upper and lower sides at the piston. The pilot flow is determined by a second valve element (8) which is controllable by electrical control signal.

Abstract: A shock-absorber includes a cylinder and a piston arranged within the cylinder and provided with at least one passageway of variable area for controlling flow of a working fluid from one side of the piston to the other side thereof. A controllable device is incorporated within the piston and continuously controlled by external control signals from a control unit to vary the area of the passageway. The external control signals are supplied by the control unit in response to input signals received from sensors which are associated with the shock-absorber. The input signals are related to the instantaneous parameter information obtained from the piston. The value of the external control signals varies during the stroke of the piston at least in part as a function of the input signals.

Abstract: A suspension in a motorcycle or similar vehicle having a frame relative to which a rear fork with a rear wheel is moveable. The suspension is characterized by an elongated composite spring mounted at the front end on the lower front part of the frame and loaded at the rear end by one end of a link member the other end of which is mounted on the rear fork. The frame is provided on its underside with at least one deflecting member which is arranged in such a manner that it bears against the composite spring upon a relative low loading of the rear fork relative to the frame to change the spring rate.

Abstract: A shock absorber works with a variable element (15) which determines the size of a medium passage between the upper and lower sides of a piston (10) in the absorber. The element is arranged so that, with the help of the inertia of its mass, it can carry out a relative displacement movement in its bearing when an acceleration force acts on the mass as a result of the acceleration of the object. The element (15), responsive to the displacement movement, exerts influence on the size of the medium passage.

Abstract: A shock absorber has an arrangement for bringing about different kinds of damping characteristics, in response to external controls (I) and independently of how the piston speed varies. The shock absorber comprises a piston which works in a cylinder (2) and which has a passage between upper and lower sides (1a, 1b) of the piston. The changes in the damping characteristics are obtained by a restriction in a channel through which a shock absorber medium or fluid flows. A first valve element (7) exerts an influence on the restriction in response to a first pressure which is created by means of a pilot flow running between the upper and lower sides at the piston. The pilot flow is determined by a second valve element (8) which is controllable by electrical control signal.