An apparatus comprising a platform and a plurality of trucks coupled to the platform. The trucks are longitudinally opposing each other. The apparatus further comprising a plurality of roller assemblies coupled to the platform. The assemblies are longitudinally opposing each other between the trucks. The assemblies are configured for omnidirectional rotation. The assemblies are elastically biased for longitudinal alignment. At least one of the assemblies comprises a motor.

An inline wheeled truck is a structural arrangement for wheels on a skating device. The inline wheeled truck includes a first wheel, a second wheel, a left elongated bracket, a right elongated bracket, a cross platform, a base platform, a first support member, and a second support member. The first wheel and the second wheel allows the inline wheeled truck to roll in a forward direction and a backward direction. The left elongated bracket and the right elongated bracket evenly space and structurally secure the first wheel and the second wheel. The cross platform structurally bridges the left elongated bracket and the right elongated bracket. The first support member and the second support member are connected in between the cross platform and the base platform and convert a tilting motion of the base platform into a steering motion of the cross platform.

An inline skate frame is provided including a first inline skate frame wall and a second inline skate frame wall opposite the first inline skate frame wall. A channel is defined between the skate frame walls. The skate frame includes axle locating features, with each axle locating feature including at least one through-hole for receiving an axle such that the corresponding axle extends across the channel. At least one of the axle locating features includes a slotted cutout in one of the first and second inline skate frame walls. Also provided is an adjustable inline skate system utilizing the inline skate frame.

A caster board can include a front platform, a rear platform, and at least two neck sections extending between the front platform and the rear platform. The neck sections can serve as a torsion element allowing twisting of the front platform relative to the rear platform. An aperture between the neck sections can be configured to receive an insert. The insert can alter a structural characteristic of the caster board, such as the torsional stiffness of the caster board.

The present invention is related to a roller ski with an adapted shock absorber device arrangeable inside a hollow backend of the roller ski body (16), wherein a first member (11) of the shock absorber device is supporting a backend wheel of the roller ski, a second member (14) is attachable to an inside surface of the hollow backend of the roller ski body (16), wherein a material strip (13) of a stretchable and compressible material is arranged in between the first and second member (11, 14).

A modular, multi-part roller skate is provided. The multi-part roller skate includes a roller skate body, a front wheel assembly, a rear wheel assembly, a support surface for supporting a footwear of a user, and at least one securing element for securing the footwear to the support surface. The multi-part roller skate is configurable as a modular roller skate with a removable pair of rear wheels, an interchangeable modular roller skate and ice skate, and an interchangeable modular roller skate and cross-country ski/snowshoe. In some embodiments, the multi-part roller skate can also be configured as a length-adjustable skate with a length adjustable skate body that includes separate front and rear foot support structures.

The disclosure discloses a wheel device, a sole, and a wheel extending and retracting operation method. The wheel device includes: a wheel seat provided with an accommodation cavity, a mounting cavity, an mounting recess and a limit member; an opening and closing assembly including an opening and closing board that is provided with an opening and closing hole; and a wheel assembly including a central shaft and a control block, where the control block sleeves the central shaft, and a first necking portion, a second necking portion, an upper stopping portion and a lower stopping portion are arranged on the control block. Under the condition that the opening and closing board is at a dismounting and mounting work position, the control block integrally enters and exits the opening and closing hole to dismount and mount the wheel assembly.

A detachable roller skating structure includes a framework, a locking mechanism, and a tumbler switch. The framework is provided with a receiving cavity, the locking mechanism is disposed in the receiving cavity, the locking mechanism includes two buckles and a driving assembly located between the two buckles, the driving assembly is linked to the tumbler switch on an outer side of the framework, and a limiting lock is disposed on the tumbler switch. According to the present application, the roller skating structure can be more conveniently detached from or mounted onto a sole of a regular shoe, achieving free change between the regular shoe and the roller skate. In addition, the self-locking of the roller skating structure is achieved by the arrangement of the limiting lock, and the use safety of the roller skates is improved.