The present invention discloses a foam material for fire prevention and extinguishing and a preparation method and a use thereof. The foam material for fire prevention and extinguishing comprises the following raw materials in parts by weight: 2-4 parts of foaming agent, 2.5-3.5 parts of foam stabilizer, 10-16 parts of expandable graphite, and 100 parts of water. The foam material for fire prevention and extinguishing has a foaming multiple up to 15-30 times, a viscosity of only 700 mPa.Math.s at a flow state, and the foam could be stable for more than 12 h. After being transported to an ignition point of the goaf via the mine grouting pipeline, the foam material for fire prevention and extinguishing can spread and pile in a large area in the goaf, and thus cover and plug the float coal at low and high places, with a piling height above 1.5 m.

A nose clip and a tail clip for a splitboard ski assembly may each comprise at least three hooks. The nose clip and the tail clip may be adaptable to various splitboard ski designs. A stretcher for a skin assembly may be configured to interface with the tail clip. The tail clip may comprise at least two elongated apertures defining a rail. The stretcher may be configured to interface with the rail via friction and/or secure a skin assembly to a splitboard ski assembly.

The present disclosure relates to splitboard joining devices. The splitboard joining devices can quickly and easily join the skis of a splitboard to create a snowboard. The devices can clamp the splitboard skis in a direction perpendicular and parallel to the seam of the splitboard and normal to the top surface of the splitboard skis. This can prevent the splitboard skis from moving up and down relative to each other, moving apart in a direction perpendicular to the seam, sliding relative to each other in a direction parallel to the seam, and rotating about the seam. The splitboard joining devices can constrain rotation and movement about the seam of the splitboard to make a splitboard ride like a normal snowboard and enhance a rider's experience on a splitboard.

The present disclosure relates to splitboard joining devices. The splitboard joining devices can quickly and easily join the skis of a splitboard to create a snowboard. The devices can clamp the splitboard skis in a direction perpendicular and parallel to the seam of the splitboard and normal to the top surface of the splitboard skis. This can prevent the splitboard skis from moving up and down relative to each other, moving apart in a direction perpendicular to the seam, sliding relative to each other in a direction parallel to the seam, and rotating about the seam. The splitboard joining devices can constrain rotation and movement about the seam of the splitboard to make a splitboard ride like a normal snowboard and enhance a rider's experience on a splitboard.

A portable snowboard with detachable parts includes a first planar section with a first member of an interconnecting joint, and a second planar section with a second member of the interconnecting joint. The first member of the interconnecting joint is detachably fastened to the second member of the interconnecting joint to engage the first planar section with the second planar section to form the portable snowboard. An anti-folding member, detachably attached between the first planar section and the second planar section, is coplanar in construction with the first planar section and the second planar section to prevent a relative folding between the first planar section and the second planar section. Multiple communication accessories are positioned on predefined sections of the first planar section and the second planar section for recording and transmitting information regarding a snowboarding session using the portable snowboard to a base station and/or a user device.

A portable snowboard with detachable parts includes a first planar section with a first member of an interconnecting joint, and a second planar section with a second member of the interconnecting joint. The first member of the interconnecting joint is detachably fastened to the second member of the interconnecting joint to engage the first planar section with the second planar section to form the portable snowboard. An anti-folding member, detachably attached between the first planar section and the second planar section, is coplanar in construction with the first planar section and the second planar section to prevent a relative folding between the first planar section and the second planar section. Multiple communication accessories are positioned on predefined sections of the first planar section and the second planar section for recording and transmitting information regarding a snowboarding session using the portable snowboard to a base station and/or a user device.

A flat board as a base plate of binding for splitboards with holders for its fixation on skis joined into a snowboard has a circular slit formed in the central part of the board. The circular slit is equipped with a perimeter recessing for demountable fixing of a contact ring which is on its inner perimeter equipped with two couples of opposed dents designed for connection with a holder. The contact ring is also modified between the dents for insertion of end pins of locking eccentric. The locking eccentric is formed by an axial shaft with end pins protruding from end hubs formed at the both ends of the axial shaft.

A collapsible ski comprising two structural portions, that is the front and the rear of the ski, coupled together by provisions of a tenon formed in the rear portion of the ski along the entire width from the edge to the edge corresponding to a mortise formed on an entire width of the front portion of the ski wherein the mortise comprises a pair of arms. The ski comprises a ski binding consisting of a front part and a rear part, wherein the ski binding comprises a plate coupled to the rear portion of the ski via screws and a transversal bar sandwiched between the plate and the ski. The coupling of the ski is positioned in a location enabling attachments of the front of the ski binding onto the rear portion of the ski. The ski further comprises a latch located in a long axis of the ski.

A collapsible ski comprising two structural portions, that is the front and the rear of the ski, coupled together by provisions of a tenon formed in the rear portion of the ski along the entire width from the edge to the edge corresponding to a mortise formed on an entire width of the front portion of the ski wherein the mortise comprises a pair of arms. The ski comprises a ski binding consisting of a front part and a rear part, wherein the ski binding comprises a plate coupled to the rear portion of the ski via screws and a transversal bar sandwiched between the plate and the ski. The coupling of the ski is positioned in a location enabling attachments of the front of the ski binding onto the rear portion of the ski. The ski further comprises a latch located in a long axis of the ski.

A splitboard fastening system is disclosed herein. The splitboard fastening system comprises a crossbar comprising a shear bushing interface and a hook, an eccentric post coupled to a lever and configured to engage an inside edge of the hook in response to rotation of the lever, and a shear bushing configured to engage the shear bushing interface, wherein the crossbar is configured to be coupled to a first splitboard ski, and wherein the eccentric post and the shear bushing are configured to be independently coupled to a second splitboard ski.