Invention Grant
US09488218B2 Pilot ring with controlled axial roll 有权
引导环带受控轴向滚动

Pilot ring with controlled axial roll
Abstract:
Apparatuses are provided for a pilot ring. The pilot ring includes a first ring and a second ring positioned concentrically within the first ring. The second ring includes a first circumferential surface positioned adjacent to the first ring and a second circumferential surface opposite the first circumferential surface. The second circumferential surface includes at least one roll feature that extends substantially along a perimeter of the second circumferential surface.
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