Abstract: A telescopic leg forming part of a front fork comprises displaceably arranged outer and inner parts (3, 4). Within the leg parts there is disposed a first chamber (10) for liquid and gas medium (12), together with a control and sealing arrangement between the leg parts, in which a second chamber (21) between a first end of a control element and a sealing element (19) is intended to accommodate some of the liquid medium (12a). The second chamber is provided with or connected to a medium supply arrangement which, irrespective of the mutual positions and movements of the outer and inner leg parts, ensures a supply of medium from a third chamber (22), disposed between the leg parts and at the second end of the control element, to the second chamber. The supply of medium substantially counteracts pressure reduction in the second chamber and ensures maintenance of the said lubrication function.

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 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 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.

Abstract: A shock-absorber is designed to be used in particular with a motor cycle or a motor car. The shock-absorber is so arranged as to permit the variation of the shock-absorbing capacity or the resistance of the shock-absorber by use of control impulses from an external computerized unit. The shock-absorber is of the kind which comprises cylinder operating with a fluid or with fluid gas. Inside the cylinder is a fixed piston which is provided with at least one passageway. In this passageway fluid is able to flow from one side of the piston to its other side, and vice versa. The piston has built into it a member capable of being controlled by the control unit and so arranged as to vary depending on the control impulses received from the control unit and so arranged as to vary depending on the control impulses received from the control unit the cross-sectional area of the passageway, causing a variation in the shock-absorbing capacity.