Patent ID: 8087362

Claim:
A cart and track arrangement, comprising: a track unit, said track unit comprising a straight track and a curved track connected to said straight track curvedly, said straight track comprising an oblique bearing portion transversely downwardly sloping from one lateral side thereof at a predetermined angle and longitudinally extending along the length of said straight track, said curved track comprising a horizontal bearing portion longitudinally extending along the length thereof, and a cart, said cart comprising a cart frame and a wheel set mounted on said cart frame and rotatably supported on said track unit, said wheel set comprising a wheel axle and a wheel pivotally mounted on said wheel axle, said wheel axle being arranged in parallel to said oblique bearing portion of the straight track, said wheel comprising a first tread disposed in parallel to said wheel axle for rotatably supporting on the oblique bearing portion of said straight track and a second tread for rotatably supporting on the horizontal bearing portion of said curved track.