Abstract: A valve device for electrically regulating a pressure in a hydraulic fluid flow through the valve device in response to an actuating force during a normal operation and mechanically regulating said pressure during a fail-safe operation when no actuating force is present is disclosed. The valve device has a valve chamber. A first valve member is movable within the valve chamber in an axial direction to interact with a first valve seat in response to the actuating force in order to restrict the hydraulic fluid flow into the valve chamber during normal operation. The first valve member is spring-loaded away from the second seat in a direction opposite that of the actuating force such that the first valve member is movable in the axial direction. A second valve member forms a movable chamber wall portion defining a part of the valve chamber. The second valve member is spring-loaded in the direction of the actuating force.

Abstract: A valve device for electrically regulating a pressure in a hydraulic fluid flow through the valve device in response to an actuating force during a normal operation and mechanically regulating said pressure during a fail-safe operation when no actuating force is present is disclosed. The valve device has a valve chamber. A first valve member is movable within the valve chamber in an axial direction to interact with a first valve seat in response to the actuating force in order to restrict the hydraulic fluid flow into the valve chamber during normal operation. The first valve member is spring-loaded away from the second seat in a direction opposite that of the actuating force such that the first valve member is movable in the axial direction. A second valve member forms a movable chamber wall portion defining a part of the valve chamber. The second valve member is spring-loaded in the direction of the actuating force.

Abstract: A damper for vehicles is arranged with selectable or adjustable damping force characteristics that are essentially independent of other internal or external function factors in the damper. For this, fixing devices and a surrounding arrangement, piston arrangement and piston rod arrangement are utilized. In the event of a damping force arising on the arrangement's piston in a certain direction of the piston, an operating device with valves and pipes is arranged to ensure that there is an increase in pressure on the side of the piston facing towards the direction, while the pressure is essentially maintained on the side of the piston facing away from the direction. In addition, pressure-maintaining devices are included that ensure that the pressure in the arrangement is maintained in the event of the occurrence of pressure-affecting parameters. The damper is preferably arranged with adjusting devices that determine the damping force characteristics according to their setting.

Abstract: A device for telescopic fork legs, preferably for a motorcycle or bicycle. The device is a compact removable unit that comprises parallel medium flow passages that run between upper and lower sides of the piston. This unit that is simple to adapt to different front fork dimensions and to use as a kit for providing an existing front fork with parallel damping. Parallel damping achieves simple adaptation of the damping characteristics to different types of terrain.

Abstract: A telescopic fork leg with damping system comprising piston and piston rod arrangements. The arrangements perform longitudinal shift motions in a medium-containing chamber. The chamber is situated in a tubular part belonging to the damping system. The piston rod arrangement is designed so as in the chamber, with its parts present therein, to have substantially constant volume regardless of the shift motions. Substantial displacement creation is thereby prevented. Moreover, the medium strives to assume and maintain a particular pressure, preferably a positive pressure, on the low-pressure side of the piston arrangement. Positive pressure build-up is therefore present in the damping system and the pressure on the low-pressure side does not need to be lower than the system pressure. A valve arrangement for handling a displacement can therefore be eliminated and the telescopic fork leg can be given an advantageous and easy-to-use structure with, for example, adjustment facilities for leak flows.

Abstract: An arrangement forms part of a shock absorber (1) and is intended to produce distinct longitudinal displacements of an element (7) in response to longitudinal displacements of a screw (15). The displacement directions of the screw and the element diverge and the displacement of the element is designed to occur against the action of a force (14) on the element. The screw is designed with a tapered or inclined surface (17) and the element, or a part related thereto, is pressed against the surface by the said force (14). Interacting sections of the surface and the element, or the part, are designed with structures that produce the said distinct longitudinal displacement positions of the element when acted upon by the member. In this way the element actuation function and that of producing the distinct positions can be incorporated into a relatively simple and compact construction.

Abstract: A shock absorber is made with a bleed function and preferably a non-return valve function associated with the bleed function. The shock absorber has a cylinder (3) and, working in the latter in working medium and arranged on a piston rod (4), a piston arrangement. The latter comprises at least two first and second pistons (5, 6) arranged at a distance from one another on the piston rod. At least one piston (5) can, in connection with an end position, be introduced into a first space so as, depending on its position in or at the space, to bring about a modified or varied damping force relative to when the piston is located outside the space. The piston rod (4) is provided with an inner second space (15) which is arranged so as to contain said bleed and/or non-return valve function. Additionally or alternatively, the piston (6) working outside the first space is provided with a member performing a bleed function and with any associated non-return valve function.

Abstract: In a front wheel suspension on a motorcycle, the front wheel is mounted in rearward-sloping supporting members which, in turn, are mounted on the chassis of the vehicle by bearing units comprising link elements and a springing function. The supporting member and the wheel are turnable about a steering line which slopes in a corresponding manner to the supporting members. The bearing units form separate upper and lower bearing units, which are provided with bearing units in or about which the supporting members and the wheel are turnable. Preferably, the upper bearing unit of the bearing units acts as a combined bearing and steering linkage member for the supporting members. The bearing units are torsionally rigid in their respective planes, which extend through the respective securement points or bearings of the bearing units in the chassis and the supporting members.

Abstract: A device, e.g. a pressure regulator, for realizing an opening and/or closing function in connection with the force-velocity curves of the device incorporates two parts which work away from and towards each other at different velocities and accelerations, e.g. slide and housing. The parts work with a stroke and determine, in dependence upon the present size of the stroke, the passage of a fluid by way of a restrictor function realized by the parts. At least the one part (the slide) is subjected to force on both its sides. The restrictor function is made up of at least two part-restrictors which can be simultaneously actuated by a respective stroke and thereupon vary, preferably successively, their restrictor sizes differently from each other in dependence upon the respective stroke size. In the restrictor function, a passage of fluid is herein obtained which produces a smooth curve shape in the introductory and concluding part of the respective opening or closing function.