| 摘要 |
The "MODIFIED WHEELS FOR ICE" consists of a wheel assembly which permits interchange with in-line skate wheels for use on ice that minimizes damage from fractures in the ice, particularly when the wheel is at an angle from perpendicular to the ice while pushing off or turning. The wheel is consists of a lightweight hub, bearing accommodating counterbores and an outer ring containing multiple contact means. When the wheel is at an angle from perpendicular to the ice the outer circumferential contact means being smaller in diameter than the inner circumferential contact means allows both contact means to engage the ice. A new load bearing support surface is both adjacent to the inner and outer circumferential contact means and parallel to the ice when the wheel is at a predetermined angle from perpendicular to the ice. The function of the support surface is to limit the penetration of the contact means into the ice. The distance between the contact means, the depth of their penetration into the ice and the interaction of the support surface with the ice contribute significantly limit the damage to the ice by fracturing.
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