B - Operations – Transporting – 60 – B
Patent
B - Operations, Transporting
60
B
B60B 19/00 (2006.01)
Patent
CA 2504392
A wheel structure includes a main wheel body, a pair of extension sections extending from respective sides of the main wheel body, and a pair of auxiliary sections coaxially extending from the extension sections, respectively. The main wheel body of the wheel has a larger outer diameter than the outer diameters of the auxiliary sections. Both the main wheel body and the auxiliary sections are provided with outer tires made in a different material. The wheel increases contact surfaces with the ground when making fume, so as to prevent overturning.
Chen Ting-Hsing
Far Great Plastics Industrial Co. Ltd.
Williams Michael R.
LandOfFree
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