Patent ID: 7673718

Claim:
A leg-wheeled traveling mechanism comprising: a seat portion; two follow-up legs, each having a follow-up leg end portion that is freely rotatably connected to the seat portion, and having a first wheel portion and a foot-rest portion at a follow-up leg tip portion, with a distance between the follow-up leg end portion and the follow-up leg tip portion being retractable; two or more support legs, each having a support-leg end portion that is freely rotatably connected to the seat portion, and having a second wheel portion at a support-leg tip portion, with a distance between the support-leg end portion and a support-leg tip portion being retractable; and a control device for controlling operations of the follow-up legs and the support legs, wherein the leg-wheeled traveling mechanism further comprises a foot-position measuring unit for measuring relative positional changes of the two foot-rest portions and foot portions of a rider so that the control device operates the follow-up legs based upon the relative positional changes measured by the foot-position measuring unit so as to allow the foot-rest portions to move virtually in the same directions as those of the foot portions of the rider.