Abstract: The invention relates to a separable or foldable ski. The ski has separate sections pivotally joined together. Located at the joint is a coupling arrangement by means of which the corresponding section may be joined together. In addition, a stabilizing device is provided to join and stiffen the ski in the extended position in order to provide desirable rigidity and resiliency therein.

Abstract: The invention relates to a ski-boot and to a ski-binding to be used in combination therewith. The ski-boot is provided with a rolling sole curved continuously in the longitudinal direction, by means of which walking is greatly facilitated, even in the case of a boot having a rigid upper and sole. The binding comprises moulded parts adapted to the curved rolling sole of the ski-boot, upon which the said ski-boot rests when the ski is in use, and which fill up, at least locally, the free space between the flat surface of the ski and the curved rolling sole; or it may have engaging parts which engage positively in recesses or grooves in the sole of the ski-boot, thus securing the ski-boot immovably to the ski. The moulded parts, which may fill up the free space between the surface of the ski and the curved rolling sole, may be either integral functioning parts of the ski-binding or accessories fitted to bindings of conventional design.

Abstract: A roller skate in which plate-like members having means securable to the foot of a wearer, are longitudinally slidable along a guide rail. The mounting members for the roller pairs are also longitudinally slidable in a recess in the bottom of the guide rail and the plate-like members and the roller mounting members are securable at a desired position along the guide rail. The plate of an ice skate may alternatively be inserted in the recess in the guide rail.