Invention Grant
US07971940B2 Wheel design 有权
车轮设计

Wheel design
Abstract:
Embodiments of the present invention are directed at least to a plastic wheel, methods of making a plastic wheel and a waste receptacle. The wheel has a wheel body and a hub. The hub has an outer wall, an inner wall and a central bore orientated along an axis that the hub extends along. The outer wall of the hub has been compressed inwardly toward the inner wall, providing greater structural support for the hub.
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