Abstract: A variable-attitude system is applicable to the wheels for children's bicycles and mini motorbikes, essential in the early learning phase, and facilitates and speeds up correct use. The mechanism described allows progressively reducing the balance support provided by the I, supplementary wheels (3) by adjusting the pressure of a spring (8). Moreover, the wheels (3) can be eliminated, much earlier and gradually, by moving upwards a stop pin (6) or screw that raises the arm (2) that supports them, moving them progressively away from the running plane (12).

Abstract: The invention relates to a front fork (10) for cycles, made of composite material, comprising two fork arms (12, 14) which unite to form an upper fork head (18). The fork head (18) comprises two rearwardly directed projections, an upper projection (30) and a lower projection (28). The two projections carry pivot portions (36, 38) which cooperate with complementary pivot portions (32, 34) provided on the steering head (24) of the frame. The fork arms (12, 14) are formed substantially linear and their centrelines are arranged at least generally in a plane in which the centreline of the fork head (18) also extends. This plane is located forwardly of the steering axis (YY) at a distance which depends on the dimensions of the cycle and is suitable to ensure the stability of the cycle.

Abstract: A device for attaching a shoe to a bicycle pedal comprises a plate (23), adapted for mounting onto a sole of the shoe, and a pedal body (1). The pedal body has first and second stepping surfaces (A, B) on opposing sides and front and rear anchor members (5A, 5B, 31A, 31B) adapted to cooperate with front and rear portions of the plate. The rear anchor members each have a lever that is pivotable about a transverse axis between an anchor position, where the rear anchor members are configured to affix the plate to the stepping surfaces, and a release position, where the rear anchor members are configured to release the plate. A common return device (55) creates a single, adjustable biasing force to bias both levers into the anchor position.

Abstract: A heel unit (10) of a safety ski binding comprises a unidirectional blocking arrangement (60') with at least one blocking member (62') arranged between a sole holder (16) and a spring biased return cam (26). The unidirectional blocking arrangement blocks in the opening direction and is releasable against a slight spring force (66) by means of a manual release member (64). One of the return cam (26) and the sole holder (16) is provided with a bearing face (68), generally circular or semicircular and concentric to the axis (A) of the return cam and of the sole holder for the blocking member (62') which is permanently resiliently urged into an actual blocking position.

Abstract: A cycle pedal arrangement comprises a cycle pedal and an associated shoe. In this arrangement the shoe has a contour in at least a region of its sole which is matched to at least one essentially complementary contour formed in a region of the cycle pedal and cooperates with the latter in at least a force transmitting manner.

Abstract: An apparatus for securing elements to the wall of composite components has a holder which passes through an aperture of the composite component. The holder consists of a coupling part which is disposed on the side of the composite component to which access is difficult and also of an operating part which is disposed at the readily accessible side of the composite component. The actuating part and the coupling part are engagable with one another for the application of a rotary movement from the actuating part to the coupling part. The coupling part is couplable with a coupling counterpart of the element to be mounted which passes through the actuating part through mutual rotation and axial clamping of the coupling part, the wall, the actuating part and the element.

Abstract: A bicycle frame having separate tubes made of composite material and joined to each other in the region of the crank axle bracket with a coiled band also made of composite material. This solid coiled band arrangement, which joins together the saddle frame tube, the lower frame tube and the rear fork tubes with the crank axle bracket, provides a compact junction and force transmitting unit.

Abstract: A method of manufacturing a bicycle fork comprising a steel steering spigot 11, a fork head 12 of fibre reinforced plastic, two fork arms 13 which likewise consist of fibre reinforced plastic and which are formed in one piece with the fork head 12 and axle mounts 14 inserted into the free ends of the fork arms 13 is characterized in that connection spigots provided on the axle mounts 14 are extended by a hard foam core 19; in that the hard foam core 19 is extended in the region of the fork head 12 by a plastic impregnated flexible foam core 22; in that a plastic impregnated flexible foam sheath 20 is laid around the connection spigots 21, around the hard foam core 19 and around the flexible foam core 22; in that subsequently various fibre reinforced sleeves 15, 16, 17, 18 are laid around the foam sleeve 20; in that then the upper parts of the fork head 12 containing the foam cores 22 are combined together into a single steering spigot connection parts 12a and are introduced, at least substantially into the lo

Abstract: In a ski brake with brake arms (12) and actuating arms (14) a pedal (16) is mounted to the actuating arms (14) about a second transverse axis (15). A linkage arrangement (17) is provided approximately parallel to the actuating arms (14) and is pivotally connected to the pedal (16) about a third transverse axis (18) and to the ski about a fourth transverse axis (19). The fact that the spacing of the second transverse axis (15) from the third transverse axis (18) is somewhat smaller than the spacing between the first transverse axis (13) and the fourth transverse axis (19) means that the pedal (16) can execute a small counter-pivotal movement on transfer of the ski brake from the braking position into the rest position.

Abstract: A safety toe unit for a ski binding comprises a base body (11) which is to be secured to the ski, with a sole holder (13) which holds an inserted ski boot from above and from the sides being upwardly pivotally mounted on the base body about a transverse axis (12). The transverse axis (12) is preferably arranged in the front end region and in particular in the lower region. The sole holder carries two side jaws (17, 18) which are laterally outwardly pivotable about vertical axes (15, 16) disposed on both sides of the central longitudinal axis (14). A release spring (20) is housed in a hollow chamber (19) of the sole holder (13) and extends substantially in the direction of the central longitudinal axis (14). The release spring (20) generates, via a lever and cam track mechanism, a holding force for the inserted ski boot which biases both the side jaws (17, 18) and also the sole holder (13) towards the ski boot holding position.

Abstract: Two base parts, by means of a spring assembly acting between them, are braced against sides of a pin with a non-circular cross-section fixed to the ski which face away from one another, in such a manner that the base parts, which together can be swivelled around the pin, are pushed into a desired position and when leaving the desired position, are moved away from one another. The ski boot is held in a form-locking manner between coupling elements and a holding-down device on the base parts. The holding-down device supports itself on the pin in such a manner that, in the case of an upward movement, one base part is moved away from the pin as well as from the other base part.

Abstract: A safety ski binding comprises a releasable front jaw (11) engaging one end of the ski boot (15) and a heel jaw (12) which engages a second end of the ski boot (15). A heel jaw housing (16) is mounted longitudinally displaceably in longitudinal guides (13) affixed to the ski. Preferably, there is at least some vertical and horizontal play between heel jaw housing (16) and longitudinal guides (13). Heel jaw housing (16) is urged by at least one thrust spring (14) against the ski boot (15) which bears on the one side on heel jaw housing (16) and on the other side on a longitudinally adjustable lock member (18) which is also affixed to the ski. Between the end of the thrust spring (14) bearing on the lock member (18) and the lock member (18), a force-resolving means (20), which resolves a part of the longitudinal force (F) of the thrust spring (14) into two opposite spreading forces (S), is disposed.

Abstract: A snowboard has two boot bindings in the form of plate bindings (11, 11'), arranged at a considerable angle to the longitudinal direction of the board. The release mechanisms of the two plate bindings (11, 11') are coupled together in such a way that during release of the one plate binding (11, 11') the release force for the other respective plate binding (11', 11) is at least substantially reduced.

Abstract: A steplessly variable transmission is described in which a driving element and a driven element are adjustable eccentrically to one another and are coupled via pivotal levers which are journalled on one element and can be brought into force transmitting clamping engagement with the other element via coupling shoes. In the context of this series connection the two change speed units are inversely combined with an eccentric positioning device being provided which either jointly actuates the members with the ring tracks associated with the coupling elements or the members with the coupling elements. The force transmitting zones of engagement of the two units are angularly displaced relative to one another and the eccentricities of the two units and also the lever arms associated with the coupling elements can be so selected that ideal transmission ratios result which are largely free of fluctuations.

Abstract: An apparatus for the measurement of the drive torque exerted on a drivable wheel and/or parameters associated therewith in which the measurement parameters are determined in dependence on the relative rotation of two parts disposed in the drive and the relative rotation is mechanically multiplied and increased prior to forming electrical measurement values.

Abstract: A snowboard has two bindings for two boots (21) with the bindings being arranged at a substantial angle to the longitudinal axis (45). Each binding includes a board plate (17) secured to the board (11) and a boot plate (21) whic=h is fixedly connectable to the boot (31). Both plates (17, 21) are drawn into firm contact with one another by resilient tensioning devices (24, 25, 26, 27) which are substantially centrally arranged in the front and the rear regions. The resilience of the resilient tensioning devices is so dimensioned that with excessive loadings of the legs of the user the boot plate (21) can turn relative to the board plate (17) to the side, to the front and to the rear and also about a vertical axis (33).

Abstract: A method of manufacturing a bicycle fork including forming a manufactured blank comprising a metallic steering spigot 11, two fork arms 13 and a pair of metallic axle mounts 14. Each fork arm 13 includes a hard foam core 19 at the lower straight portion of each fork arm 13 and a flexible foam core 22 at the upper end of each fork arm 13. Alternatively, a single flexible foam core having an internal pressurization may be advantageously used. The axle mounts 14 have a connection spigot 21 which is inserted into the free ends of each fork arm 13. A polymer impregnated flexible foam sheath 20 is laid around foam core 19, flexible foam core 22 or 37 and connection spigots 21. Subsequently, various polymer impregnated fiber reinforced sleeves 15, 16, 17, 18 are laid around the foam sleeve 20. The upper parts of the fork arms 13 are brought together to form a fork head 12 having a single steering spigot connection part 12a and fork arm transition parts 12b.

Abstract: A pedal plate (13) for a cycle safety pedal (26) is releasably attached to the sole (12) of a cyclist's shoe in the ball region and has a running surface which extends parallel to the attachment region on the sole. The attachment region (11) of the sole (12) is arranged recessed by the thickness of the pedal plate (13) relative to the base surface of the sole (36) around the attachment region (11), so that the bottom of the pedal plate lies substantially flush with the bottom of the sole.

Abstract: A safety ski binding includes an end piece engageable with a ski boot and horizontally pivotable on a body rotatably mounted on a pivot member carried on the surface of a ski for vertical pivotability with respect to the ski. The vertical pivot member includes two diametrically opposed cam faces movable in the longitudinal direction of the ski, each of the cam faces being engaged by a separate piston while being urged by a common spring. The end piece is adapted to move one of the two pistons away from the corresponding cam surface on vertical movement of the end piece. A modified embodiment of the invention utilizes a single piston and the spring controls the release of the ski boot under both side torsion stresses and vertical movements of the ski boot end associated with the binding when they exceed predetermined and adjustable limit values.

Abstract: This ski boot is intended for properly and automatically positioning same on the ski without any preliminary adjustment of the safety binding in the longitudinal direction, irrespective of the boot size. The boot comprises a sole truncated at either end so as to provide a ski-engaging bottom bearing surface having a constant length independent of the boot size, the middle point of the sole being adapted to register with a reference mark carried by the ski; the end faces of the truncated sole are provided with recesses, cavities, grooves or projections adapted to co-operate with corresponding elements of the toe-end and heel-end devices of the safety binding.