Wheel provided with sub-wheels

A wheel provided with sub-wheels, which comprises:

• wheel means for forming a wheel having a circular rim formed around the outer periphery thereof;
• a plurality of sub-wheel supporting means mounted on and around said circular rim so as to be directed radially and outwardly;
• and
• a plurality of sub-wheels each rotatably supported by a respective one of said sub-wheel supporting means for rotation about an axis extending tangentially to said circular rim, said plurality of sub-wheels being arranged on the outer periphery of said wheel for constituting a tire;
• wherein each sub-wheel supporting means comprises two inclined surfaces each inclined by a specific angle towards each other, and a main shaft and a sub-shaft on said inclined surfaces so as to project therefrom, said main shaft having at the center portion thereof a hole in which one of said sub-wheels of the sub-wheel supporting means adjacent thereto is fitted and having on the outer periphery thereof another of said sub-wheels mounted rotatably;
• wherein a joint protector is interposed between each adjacent pair of said sub-wheel supporting means, said joint protector having a wedge-shaped section and being provided with two short shafts fitted in the center holes of said sub-wheel supporting shafts;
• and
• wherein an elastic interposition member is disposed around the circumference of the wheel and has radially outward projections interposed between each adjacent pair of said sub-wheels, said interposition member having an outermost diameter which is substantially the same as the outermost peripheral diameter of the tire constituted by the sub-wheels.