Multi-surface curved skating board for e.g. snow gliding, has curve giving angular turn trajectory, grooves supporting trajectory during gliding, and larger edges ends producing friction to reset board in line

摘要

The board (1) has a curve (B) giving an angular turn trajectory. Five large edges and two external edges with crossing curves participate with the trajectory, and engage on the snow on water and in air based on their length. An arc shape under the board creates grooves, which support the trajectory during snow gliding. Ends of the larger edges produce a friction, which contributes to reset the board in line.