CIRCULAR ROLLER Russian patent published in 2014 - IPC A63G17/00 

FIELD: transport.

SUBSTANCE: circular roller consists of stiff ring and carriage arranged therein. This carriage has foot support and roller supports composed of one band hyperboloids and hand steering element. The latter is composed of two stiff arcs with convexities directed outward in the plane perpendicular to the ring plane and rigidly connected by their lower sides to said carriage and by their upper sides to roller support. Stiff ring has protector composed of endless coil spring of elastically pliable material coiled on stiff ring. Roller supports are configured to combine the gear functions approximating to worm gears of spring-hear transmission. They are fitted in place in pairs and mutually perpendicular at three frames, mid plane on each being directed to the ring rotation axis. Note he that said spring can be made of the material with shape memory.

EFFECT: enhanced operating performances.

2 cl, 2 dwg