Abstract: A ski with a base portion having a running surface of varying width and a hollow ski body. The height of the ski varies over the length of the ski. The ski body is hollow with lateral edges extending parallel to each other over the length of the ski. The width of the ski body is constant and is less than, or equal to, the narrowest width of the base portion.

Abstract: In a ski (1) with a damping element (5) for damping shocks that act transversely to the longitudinal direction of the ski in the area of the ski binding, with a carrier body (3) for at least one layer of damping material (5), in particular elastomer damping material, which is arranged between the carrier body (3) and the ski (1) the carrier body (3) is connected directly to the upper chord (7) of the ski in a middle area (4) that is located between the front and rear ends, as viewed in the longitudinal direction of the ski, and is connected to the upper side of the ski (1) in front of and behind the middle area (4) through an interposed layer of damping material (5).

Abstract: In a racquet, particularly a tennis racquet, having a handle (8) and a stretcher frame secured via a throat region (2) for stringing in which the cross-section of the stretcher frame measured transversely to the stringing has at least one section of largest dimension, the cross-section (a, b, c) of the stretcher frame in the throat region (2) and in the region of the racquet head (3) remote from the throat region is greater than in the region of the stretcher frame lying therebetween, whereby the cross-section (c) in the region of the racquet head (3) remote from the throat region is greater than the cross-section (b) in the throat region.

Abstract: In a ski that has integrated elements for the attachment for components of the binding system, the ski is bonded rigidly to an essentially plate-shaped carrier body that extends in the longitudinal direction of the ski, in an area that lies between the ends that face in the longitudinal direction of the ski. Outside the area that is bonded rigidly to the ski, the carrier body incorporates guide rails or grooves that extend in the longitudinal direction of the ski and are used for the attachment of the components of the bindig system, and the ends of the carrier body that face in the longitudinal direction of the ski are arranged at a distance from the upper side of the upper chord of the ski. It is preferred that outside the area that is bonded rigidly to the ski the carrier body is bonded rigidly to the ski or to the upper chord of the ski through interposed damping material.

Abstract: In a racquet, in particular, a tennis racquet, which incorporates a frame, an open or closed heart piece, and a shaft (2) that is joined to the heart piece, with the frame, heart piece and shaft being formed in one piece or connected releasably to each other, the grip (1) that is formed as a one-piece sleeve can be slid onto the shaft. The inside profile of the cross section of the grip (1) and the outside profile of the cross section of the shaft (2) incorporate longitudinal shape-locking and interacting supporting surfaces. The spacing between the supporting surfaces on the shaft (2) and the supporting surfaces of the grip (1) tapers in a wedge shape towards the unattached end (11) of the shaft (2). A removable distance piece (3) that prevents the grip (1) being slid axially into the mated position is releasably connected to the end (11) of the shaft. With the distance piece (3) installed on the shaft, the racquet can be tested with various grips (1).

Abstract: A process for the production of a ball game racket frame, in particular a tennis racket, squash racket or badminton racket frame, with a head and a shaft, in which at least the head and/or the shaft is made of a fiber-reinforced plastic as a hollow body, an injectable matrix, optionally with a reinforcing fiber material and an inert gas under pressure, in particular N.sub.2, is injected into a mold to form the hollow space of the hollow body.

Abstract: A device for the protection of strings on the frame of a racket, such as for example, a tennis racket, comprises a band-like body which includes a plurality of tubular sleeves spaced a distance corresponding to the distance of bores in the frame of the racket. The band-like body further includes a peripheral groove which groove is in open connection with the tubular sleeves. The strings are placed into the peripheral groove and are strung through the tubular sleeves. The band-like body has protruding wall parts located on the side of the groove facing the tubular sleeves, which wall parts are connected with lateral parts of the body that overlap the frame. The protruding wall parts close the peripheral groove so that the strings lie protected within the peripheral groove.

Abstract: In a ski being equipped with metal edges, the tread (2) has, as seen in a cross section, a horizontally extending central area (2') and at both sides thereof lateral areas (4) extending in upward direction and being rigidly connected with the ski. The width of the central area (2'), extending, as seen in a cross section, in a horizontal plane, of the tread (2) is greater than the total width of the chamferred and upwardly extending areas (4) and the tangent lines applied to the lateral areas (4), extending at least over the width of the steel edges, and normally extending relative to the longitudinal direction of the ski include one with the other an obtuse angle of 170.degree. to 179.degree., preferably 174.degree. to 178.degree., having its apex located below the tread (2) in the vertical longitudinal center plane (6) of the ski. The width of an upwardly extending lateral area (4) of the tread (2) is smaller than 10 mm. This width can approximately correspond to the width of a steel edge.