ANNULAR ROLLER Russian patent published in 2015 - IPC A63G17/00 

FIELD: sports.

SUBSTANCE: in the annular roller, consisting of a rigid ring having on its outer surface a protector with a carriage, mounted on its inner surface, provided with footrest and steering elements for hands, designed as two rigid arcs located with their convex sides outwardly in a plane perpendicular to the plane of the ring, the carriage is connected to the system of two pairs of wheel assemblies providing stability to the ring, each of the pair of wheel assemblies consists of two semi-axes oriented normally to the median plane of the ring, with the hub bearing a single board spoke for the board support wheel made by type of ball bearing, which has a mechanism of orientation and fixing the spoke with respect to the median plane of the ring from the angular position (α) to the angular position (-α).

EFFECT: increased resistance of the ring roller.

1 dwg