| 主权项 |
1. A yarn core assembly, comprising:
a hollow cylindrical paperboard core having an interior surface and an exterior surface, the exterior surface being adapted to have yarn wound thereon to form a yarn package on the core, the core having a proximal end and an opposite distal end; and a proximal-end support member inserted into the proximal end of the core, the proximal-end support member comprising a clutch mechanism operable to automatically prevent or reduce rotational slippage of the core relative to the proximal-end support member, the proximal-end support member having interior surfaces for engagement with drive surfaces of a spindle assembly on which the proximal-end support member is configured to be mounted, wherein the proximal-end support member includes a plurality of wedge surfaces and a plurality of corresponding core-engaging elements, and wherein each wedge surface is configured to move the corresponding core-engaging element farther away from a rotational axis of the spindle assembly upon rotation of the support member, thus providing the clutch mechanism, and wherein proximal-end support further includes a plurality of urging elements, each associated with a corresponding core-engaging element, and wherein each urging element is configured to bias the corresponding core-engaging element radially outward into a canted orientation wherein the lower part of the core-engaging element extends farthest in the radially outward direction. |
