Patent ID: 6726524
Filing Date: 2004-04-27
Classification: A01B,A63H,B62D

Abstract:
A traveling structure comprising:a main body; a crosswise pair of legs attached to said main body; a plurality of traveling wheels rotatably mounted to respective ends of said legs so that the wheels are arranged on every side of the main body for supporting the main body to allow for rolling movement along a traveling surface; and a plurality of driving sources each being operatively coupled to a respective one of said traveling wheels for independently driving each of said traveling wheels to thereby cause the main body to be propelled along a surface; wherein each of said traveling wheels has a circumferential supporting surface, and includes a plurality of auxiliary disc-shaped wheels freely rotatably mounted to respective ones of said traveling wheels in circumferential spaced-apart relationship relative to the supporting surface of the traveling wheels so that a portion of each said disc-shaped wheel protrudes from a said supporting surface and engages the traveling surface along which the main body travels.