Anti-slip coverings for underlying surfaces are shown and described. The anti-slip coverings include a layer made of a semi-flexible material that is configured to receive contact from an object and has slits at least partially extended through the layer. The layer includes a cut-out pattern comprised of a plurality of cut outs cooperatively aligned with the slits to enable the slits to at least partially open when one or more of a downward force and a horizontal force is applied by the object onto the anti-slip covering. In some examples, the anti-slip covering includes a second layer disposed between the first layer and the underlying surface to allow compression of the first layer when a downward force is applied on the anti-slip covering.

Sliding board (1), whose internal structure has a core (2) edged with side ski edges (10), said core (2) separating two lower (3) and upper (4) reinforcing layers, in which core (2) includes at least additional component (20) made of material with greater flexibility than the remainder of the core, characterised in that said additional component is inserted into a slender hollow (21, 22) shaped to curve inside the core.

The present invention is a variable-rocker surfboard, comprising: a tapered composite panel enveloped partially or entirely in a soft foam. The tapered composite panel is oriented horizontally partially or entirely within the soft foam, such that the length, width, and thickness of the panel correspond with the length, width, and thickness of the soft foam. The objective of this design is to provide a surfboard with desirable flex characteristics that result in variable rocker, wherein the tapered composite core attributes the flex characteristics, and the soft foam provides volume for the desired buoyancy. The present invention may be provided as a surfboard blank, wherein the soft foam needs to be worked into a surfboard shape. The present invention, may also be provided as a surfboard, wherein the soft foam has been shaped to the desired design and may be laminated with an exterior skin.

A lightweight surfboard that is rigid yet provides uniform flex characteristic without the use of a traditional wooden stringer includes a stringerless blank foam and a set of channels shaped into a top portion of the body of the surfboard. The set of channels comprises a pair of adjacent, axially extending elongated concave grooves that run along the length of the set of channels, meet at their end points and form a convex center section. The convex center section of the set of channels provides the support to prevent the board from breaking due to the bending of the surfboard while being ridden on the wave. A laminating layer may be glassed on the set of channels for additional strength. The laminating layer may include fiberglass cloth, Kevlar, carbon fiber or any suitable material.

A surfboard core and a stringer array embedded in the core to modify handling characteristics of the board.

A sports board comprises, at a minimum, a top layer, a bottom layer, and a core in between them. A structural element with puzzle piece shape fits into a correspondingly shaped seat formed by the core, in between the top and bottom layers. The shape of the structural element prevents the structural element from being dislodged by shock forces frequently associated with use of the board. Machined or molded features are provided that penetrate or partially penetrate the structural element. These features, which are filled or included with resin, adhesive or another chemical bonding agent, resist horizontal shearing between the structural element, the core, and the top and bottom layers. A leading portion of the structural element protrudes out from in between the top and bottom layers, forming a bumper that acts as the first point of contact between the board and the ground or an obstacle.

A modular, weight-shift controlled watercraft device is disclosed which includes a wireless handheld throttle controller comprising a body configured to avoid water intrusion, a throttle control interface configured to receive an input controlling a speed of the watercraft, a memory storing an operator profile setting, a wireless transmitter configured to communicate wirelessly with a microcontroller of the watercraft, a processor configured to communicate control information to the microcontroller of the watercraft via the wireless transmitter.

The present invention relates to a polymeric composition suitable for watercrafts or nautical applications. The present invention relates also the use of a transparent polymeric composition for watercrafts. More particularly the present invention relates to a transparent (meth)acrylic polymer composition and relates also to a process for preparing such a (meth)acrylic polymer composition, its use in watercrafts and watercraft comprising it.

The present invention relates to a polymeric composition suitable for watercrafts or nautical applications. The present invention relates also the use of a transparent polymeric composition for watercrafts. More particularly the present invention relates to a transparent (meth)acrylic polymer composition and relates also to a process for preparing such a (meth)acrylic polymer composition, its use in watercrafts and watercraft comprising it.

A foam product includes a foam core, a soft skin covering the foam core, and a base structure on which the foam core is disposed. The foam core of expanded beads has an outer surface on which some outermost beads of the expanded beads are exposed and bulging outward with different heights to form a bubbly texture. The foam skin has an inner surface attached to the outer surface of the foam core, and has at its inner surface a plurality of concave cavities each matedly surrounding a respective one of the bulging, outermost beads on the outer surface of the foam core.