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A runner device (1), in particular a ski (2), snowboard, runner or similar, with a stiffening and/or damping element (50) joined to at least one part of the runner device (1), e.g. a layer or an inlaid element, the stiffening and/or damping element (50) being formed by a casing element (46) forming

A runner device (1), in particular a ski (2), snowboard, runner or similar, with a stiffening and/or damping element (50) joined to at least one part of the runner device (1), e.g. a layer or an inlaid element, the stiffening and/or damping element (50) being formed by a casing element (46) forming a housing compartment (45) filled with packers (44), which can be adjusted in terms of its hardness or its deformation resistance as necessary by reducing an internal pressure to a pressure below atmospheric pressure.

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1. A runner device comprising(a) a stiffening and/or damping element extending over at least a portion of the length and width of the runner device for absorbing and counterbalancing external forces to which the runner device may be subjected, the stiffening and/or damping element consisting of (1)

1. A runner device comprising(a) a stiffening and/or damping element extending over at least a portion of the length and width of the runner device for absorbing and counterbalancing external forces to which the runner device may be subjected, the stiffening and/or damping element consisting of (1) an elastically deformable casing element formed by at least one covering layer, the casing element enclosing a housing compartment having an evacuatable interior chamber which is filled with filler bodies and has a vent, (b) an evacuation mechanism, and (c) a supply line for connecting the evacuation mechanism to the vent for changing the air pressure in the interior chamber whereby the hardness and resistance to deformation of the stiffening and/or damping element is adjustable. 2. Runner device as claimed in claim 1, wherein the runner device comprises more than one stiffening and/or damping element spaced apart from one another in the longitudinal direction and/or in a direction disposed transversely thereto and/or in a direction of a thickness.3. Runner device as claimed in claim 1, wherein the casing element has several covering layers with differing elasticities or deformation properties.4. Runner device as claimed in claim 1, wherein the housing compartment has several part-compartments separated from one another by elastically deformable webs.5. Runner device as claimed in claim 1, wherein housing compartments of several of said casing elements or part-compartments thereof are in flow communication.6. Runner device as claimed in claim 1, wherein part regions of the casing element are provided in the form of a profiled reinforcing element and/or a flat layer and/or a top or bottom belt.7. Runner device as claimed in claim 1, wherein the casing element is disposed in a tubular or profiled reinforcing element.8. Runner device as claimed in claim 7, wherein the reinforcing element is a hollow section extending at least across a large part of the length of the runner device.9. Runner device as claimed in claim 8, wherein the casing element or elements are arranged in a hollow cross section formed between several hollow sections.10. Runner device as claimed in claim 8, wherein the hollow section forms the supply line which is connected to the evacuating mechanism.11. Runner device as claimed in claim 1, wherein the casing element has one or more reinforcing elements in the housing compartment.12. Runner device as claimed in claim 1, wherein the casing element is disposed between two or more layers or coverings of a multi-layered runner device.13. Runner device as claimed in claim 12, wherein the casing element is disposed closer to a top layer.14. Runner device as claimed in claim 1, wherein the housing compartment is in flow communication with the evacuating mechanism via a return valve.15. Runner device as claimed in claim 1, wherein the runner device comprises a connector fitting for an external vacuum pump.16. Runner device as claimed in claim 1, wherein the filler bodies are spherical in shape.17. Runner device as claimed in claim 1, wherein the filler bodies are made from a hard material.18. Runner device as claimed in claim 1, wherein the filler bodies are made from open-cell plastics spheres.19. Runner device as claimed in claim 1, wherein the filler bodies have a core of hard material, which is covered with an elastic material.20. Runner device as claimed in claim 1, wherein the filler bodies are made from different materials and are of different sizes.21. Runner device as claimed in claim 1, wherein at least one mechanism having at least one stiffening and/or damping element co-operating therewith is disposed in the longitudinal direction and/or in a direction disposed transversely thereto on a layer forming the top face of the runner device.22. Runner device as claimed in claim 21, wherein the mechanism has at least one strip-shaped or square or profiled transmitting element forming a supporting element.23. Runner device as claimed in claim 22, wherein the profiled transmitting element is a hollow section with a rounded or oval or polygonal cross section.24. Runner device as claimed in claim 22, wherein at least one thrust bearing is arranged at a distance apart from a mounting plate for at least one binding part or from a separate fixing mechanism, and the transmitting element extends between them.25. Runner device as claimed in claim 24, wherein an end-side region of the transmitting element is held in position on the mounting plate or the fixing mechanism and the other end-side region is mounted so as to be displaceable relative to the thrust bearing.26. Runner device as claimed in claim 24, wherein the transmitting element is made up of several supporting elements engaging one inside the other or overlapping with one another at least in certain regions, of which an outer hollow section is held in position at its two opposing ends region by the mounting plate or fixing mechanism and the thrust bearing, whilst an inner of the supporting elements is held in position by the thrust bearing.27. Runner device as claimed in claim 26, wherein at one of the end regions of the transmitting element a cavity is formed by the supporting elements engaging in one another and/or a wall of the thrust bearing or the mounting plate or the fixing mechanism, in which the housing compartments of stiffening and/or damping elements are disposed.28. Runner device as claimed in claim 24, wherein at least one other transmitting element, which may optionally be joined to the top face, is provided between the mounting plate or a separate fixing mechanism and the thrust bearing spaced at a distance therefrom.29. Runner device as claimed in claim 28, wherein the stiffening and/or damping element is disposed between mutually facing end-side end regions of the transmitting element.30. Runner device as claimed in claim 28, wherein a length of the transmitting element is longer than a distance in the longitudinal direction of the runner device between the mounting plate or the fixing mechanism and the other transmitting element.31. Runner device as claimed in claim 22, wherein the transmitting element forms a curved arc on the top face.32. Runner device as claimed in claim 1, comprising a thrust bearing and/or a transmitting element having a recess to accommodate at least one stiffening and/or damping element.33. Runner device as claimed in claim 32, wherein the end region of a supporting element projecting into the recess is guided in a longitudinally sliding or pivoting arrangement by a guide mechanism formed by the thrust bearing.34. Runner device as claimed in claim 33, wherein one end of the transmitting element has a substantially strip-shaped plate element adjoining the housing compartment of the stiffening and/or damping element.35. Runner device as claimed in claim 32, wherein a plate element divides the recess into several compartments, in which at least one stiffening and/or damping element and casing element with the same or different filler bodies are disposed.36. Runner device as claimed in claim 1, wherein the runner device comprises a running surface lining and a top layer, the stiffening and/or damping element being disposed therebetween.37. Runner device as claimed in claim 1, wherein the runner device comprises a top layer and the stiffening and/or damping device is mounted on the top layer.