Multi durometer wheel for in-line skates
First Claim
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1. A skate wheel for an in-line skate, comprising:
- hub means for rotation about an axis;
a plurality of layers of material disposed concentrically about said hub means, each of said plurality of layers consisting of a resiliently deformable material having a predetermined hardness permitting lateral flexure of said layers about a non-radial loading of said layers relative to said axis;
said plurality of layers comprising at least one inner polymeric core disposed concentrically about said hub means and at least one outer polymeric core disposed concentrically about said inner core, said at least one outer core including an outer surface adapted for roller over a surface, which outer surface is acuate along said axis;
wherein the hardness of said at least one outer core exceeds the hardness of said at least one inner core so that said outer core is harder than said inner core for rolling over a surface, and said inner core is softer than said outer core so that said inner and outer cores cooperate to absorb energy during a rolling motion of said wheel when under load over a surface, and to release energy upon reduction of said load for non-radial propulsion of said wheel relative to the ground.
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Abstract
There is disclosed an improved skate wheel for an in-line skate comprising a hub for rotation about an axis and a plurality of cores of material disposed about the hub to be coaxial therewith, the outer core of material being harder than the inner core to facilitate a rolling motion of the wheel over a surface while absorbing energy.
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Citations
15 Claims
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1. A skate wheel for an in-line skate, comprising:
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hub means for rotation about an axis; a plurality of layers of material disposed concentrically about said hub means, each of said plurality of layers consisting of a resiliently deformable material having a predetermined hardness permitting lateral flexure of said layers about a non-radial loading of said layers relative to said axis; said plurality of layers comprising at least one inner polymeric core disposed concentrically about said hub means and at least one outer polymeric core disposed concentrically about said inner core, said at least one outer core including an outer surface adapted for roller over a surface, which outer surface is acuate along said axis; wherein the hardness of said at least one outer core exceeds the hardness of said at least one inner core so that said outer core is harder than said inner core for rolling over a surface, and said inner core is softer than said outer core so that said inner and outer cores cooperate to absorb energy during a rolling motion of said wheel when under load over a surface, and to release energy upon reduction of said load for non-radial propulsion of said wheel relative to the ground. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification