Propulsion system for assistance when paddling in surfing; comprising a propellant device (1), hydro jet type, intended to be mounted on a surfboard (T); and a control device (2) in the manner of a bracelet or bracelet suitable for its attachment on a users arm. The control device (2) comprises: a microprocessor (21), a supply battery (22), sensors (23) that provide the microprocessor (21) with suitable data to identify the users rowing action, calculating the speed and intensity of paddling and generating a control signal proportional to the paddling intensity of the user and; a wireless communication means (24) that transmits the control signal to the propelling device (1); and wherein said propelling device (1) varies the propulsion power as a function of the signals received from the control device (2).

A system for towing watercraft embodying a towable carrier is provided. The towable carrier is adapted to attach to tow components of a towing vehicle, while sandwiching the towable object between netting an arrangement of strapping and padding. The towable carrier provides netting that spans a framework, wherein the framework attaches to the tow components by way of adjustable strapping, sleeves and clamps pivotably connected to the framework.

The disclosure is directed to a display apparatus and system for displaying and using elongated boards secured in a three dimensional space.

A clamping stand comprising a pair of cams, each cam operating as a cylindrical cam, having a clamping member facing the clamping member of an opposite clamping member for holding the object therebetween; and having a lower portion configured for arcuate motion connected by a linkage assembly that translates linear movement to rotational movement about a pivot axis, enabling uniform clamping pressure on an object through actuation of the linkage assembly and facilitating clamping through arcuate motion of the lower portions.

A clamping stand comprising a pair of cams, each cam operating as a cylindrical cam, having a clamping member facing the clamping member of an opposite clamping member for holding the object therebetween; and having a lower portion configured for arcuate motion connected by a linkage assembly that translates linear movement to rotational movement about a pivot axis, enabling uniform clamping pressure on an object through actuation of the linkage assembly and facilitating clamping through arcuate motion of the lower portions.

A clamping stand comprising a pair of cams, each cam operating as a cylindrical cam, having a clamping member facing the clamping member of an opposite clamping member for holding the object therebetween; and having a lower portion configured for arcuate motion connected by a linkage assembly that translates linear movement to rotational movement about a pivot axis, enabling uniform clamping pressure on an object through actuation of the linkage assembly and facilitating clamping through arcuate motion of the lower portions.

A clamping stand comprising a pair of cams, each cam operating as a cylindrical cam, having a clamping member facing the clamping member of an opposite clamping member for holding the object therebetween; and having a lower portion configured for arcuate motion connected by a linkage assembly that translates linear movement to rotational movement about a pivot axis, enabling uniform clamping pressure on an object through actuation of the linkage assembly and facilitating clamping through arcuate motion of the lower portions.

A board-type watercraft is adapted for selective disassembly into a plurality of separate sections for ease of transport and storage. Preferably, a selection of differently configured nose and tail sections can be releasably connected to a universal middle section to create a wide variety of distinctive board styles. With the watercraft in its assembled state, adjacent sections are releasably secured together using compressive-type fastening elements, such as spring-biased latch mechanisms. Pairs of fastening elements are preferably arranged on the top and bottom surfaces of the board in substantial vertical alignment to limit torque between sections and thereby ensure adequate stiffness through each joint. In its disassembled state, the sections can be stacked into a highly compact configuration suitable for packaging within a container that is compliant with maximum size standards for conventional ground courier services.

The invention relates to a cover or case for goods, in particular for use as a cover or case for hobby or sports equipment. In an embodiment, the case has an inner portion, formed of expanded polypropylene (ePP) and defining a cavity for receiving at least part of the item. The case also includes an outer layer, formed of self-reinforcing polypropylene (srPP), arranged to cover an outer surface of at least part of the inner portion. In further embodiments, the cover is formed of two or more sections that may be arranged to at least partially overlap, wherein adjusting the overlap of the at least two sections changes the dimensions of an inner cavity within the cover or case. The case may be telescoping, in order to provide adjustable dimensions for a cavity within the case.

A stand-up paddleboard (SUP) may be configured with a non-retentive binding system to secure a user's foot positioning. In one example, the binding system may include pockets formed from panels extending continuously along edges of the paddleboard, and straps to provide tension on the pockets, to reduce a likelihood of undesired sliding of the user's feet. The pockets of the binding system may allow the user to reposition the user's feet to multiple secured footholds within the binding system, thereby allowing the user's stance and balance to be maintained.