Mountain slope descending permitting device for e.g. sport activity, has frame assembled free in rotation in wheel and defining space to accommodate user in profile position, where frame has guides extending straightly from walls of wheel

摘要

The device has a frame (12) assembled free in rotation in a wheel (11). The frame defines an inner space (18) for accommodating a user in a profile position and includes guides extending straightly from walls of the wheel. Roulettes (13) are located between the frame and the wheel, and include throats such that crests of the throats are located partially straight from side walls of the wheel.