The roller board having a footboard and two front wheels mounted on a front axle can be steered in that the front axle is connected to the footboard pivotable about an axis perpendicular to the plane of travel. The front axle is resiliently coupled to the footboard in the direction of rotation.

A fastening assembly for a ski crampon includes a hinge pin having a mounting portion and a securing portion. The mounting portion has a smaller dimension in a first direction and a larger dimension in a second direction, the first and second directions orthogonal to the longitudinal direction of the hinge pin. The securing portion has substantially the same dimension in the first and second directions. A mounting fastening portion defines a gap and an opening. The gap and the opening each extends substantially transversely to a ski longitudinal direction and substantially parallel to the ski surface. The gap receives the mounting portion of the hinge pin, which is inserted through the opening. The dimension of the opening in the ski longitudinal direction is larger than the dimension of the mounting portion in the first direction and smaller than the dimension of the mounting portion in the second direction.

The invention refers to a folding ski for sporting or military purposes. The technical problem is how to conceive a functional ski without a retaining projection with a latching mechanism arranged at the front end of the ski front section, which projection is used to fasten a connecting platform in the folded state of the ski. The folding ski of the invention includes a ski front section, a ski rear section, a folding connection that inseparably connects the rear end of the ski front section with the front end of the ski rear section, a connecting platform that is intended to stiffen the folding connection and is pivotal around its axis of rotation a that extends perpendicularly to the upper surface of the ski, wherein the connecting platform is directly pivotally connected with the ski front or rear section.

A collapsible ski device, having: a first forward ski member having a bottom surface, a tip and a rear end; a second middle ski member having a bottom surface, a forward end and a rear end; and a third rear ski member having a bottom surface, a forward end and a tail. The forward end of the second middle ski member is pivotably coupled to the rear end of the first forward ski member by a first hinge mechanism. The first hinge mechanism has a flexible component attached at a first location to a first attachment surface on the first forward ski member and attached at a second location to a second attachment surface on the second middle ski member. The rear end of the second middle ski member is pivotably coupled to the forward end of the third rear ski member by a second hinge mechanism. The second hinge mechanism has a flexible component attached at a first location to a third attachment surface on the second middle ski member and attached at a second location to a fourth attachment surface on the third rear ski member.

An auto-balancing transportation device having a wheel structure and foot platforms that pivot between an in-use and a stowed position. The pivot axis for each platform is provided within the wheel structure so that the force exerted by a rider when stepping on a foot platform is applied to the wheel structure at a point within the wheel structure, as opposed to external to it, which is unstable and may cause the device to tip over.

This invention deals with portable modular equipment for area assembly multisport and/or multipurpose and method of setting up multisport area and/or multipurpose, ideal for sports such as soccer, volleyball, basketball, handball or other sports, as well as physical, educational and recreational activities that primarily aim at the production of knowledge related to teaching/learning/leisure; the modular equipment (10) is completely portable and conformed by one, preferably, two modules (20), each of them to the format preferential use of a container (21) and able to pack a set of parts structural (CP) that correspond to half of a multisport/multipurpose area (AP); said set of pieces (CP) is basically composed of a fencing bottom link (30A), two side fences (30B), at least four modular bleachers (40), at least one access structure (30C), accessories goal posts (60), volleyball nets (61) or others, at least one self-contained set for generating lighting (70) and Wi-Fi signal, synthetic grass or modular floor coverings (GS), as well as components of mounting type connectors, screws and others.

A detachable snowboard and snowboard pole with a collapsible shaft divided into segments, a basket tip, and a handle. In exemplary embodiments, the pole affixes to a planar top surface of the snowboard using a mounting system comprising a plurality of clamps at staggered attachment points, each clamp adapted to form a friction fit with segments of the snowboard pole, each clamp oriented in parallel with one another.

A self-standing portable ice skating rink structure that does not penetrate the underlying surface and generally requires no tools or hardware for installation is provided. The ice skating rink structure includes a perimeter component and one or more tension members. The perimeter component can include one or more board holding members and/or one or more optionally interlocking side boards.

The present invention provides a foldable stick (10), in particular a sports stick (10), comprising a plurality of stick segments (12, 14, 16) and at least one tensioning mechanism (18, 20), the stick (10) being adjustable between an assembled configuration in which all stick segments (12, 14, 16) are joined aligned axially with one another, and a disassembled configuration in which the stick segments (12, 14, 16) are detached from one another and can be folded together, the tensioning mechanism (18, 20) is adapted to pretension the stick segments (12, 14, 16) into the assembled configuration of the stick (10).

The invention relates to a folding pole (1), normally comprising four pipe sections (7-9), wherein the pipe sections (7-9) are connected to each other by means of plug-in connections while aligned along the pole axis (32) in the assembled state of the folding pole (1), and normally only three pipe sections (8, 8, 9) are still connected to each other by means of a movable connecting element (16) in the folded state, and wherein a pole handle (2) is arranged on a top pipe section (7) and a pole tip (23) is arranged on a bottom pipe section (9). According to the invention, at least one of the plug-in connections is realized by means of an external clamping mechanism (10), wherein the clamping mechanism (10) is fastened to a first pipe section (7), and wherein a second pipe section (8), which has an outside diameter smaller than or nearly equal to the inside diameter of the first pipe section (7), and which is supported in the first pipe section (7) so as to be movable itself, can be fastened in the relative axial position by the external clamping mechanism (10). The further plug-in connections are designed as pure plug-in connections, wherein pipe sections (8, 8, 9) are fastened only an axial direction in the connected state. The pipe sections (7-9) are connected to each other by means of at least one tension cable (16), which is fastened to the bottom pipe section (9) and to the top pipe section (7) and which is arranged so as to pass through the interior (31) of the at least two middle pipe sections (8, 8). The folding pole (1) is designed in such a way that the folding pole can be transferred from the folded state to the assembled state by connecting the further plug-in connections, and then, with the external clamping mechanism (10) released, pulling the second pipe section (8) out of the first pipe section (7) until the tension cable (16) is under tension, and fastening the external clamping mechanism (10).