| 摘要 |
Apparatus for rotating a spinner comprising a rotatable cap means, a quill upon which said spinner is mounted for rotation, and a threaded insert adapted to transmit a drive force from the rotatable cap means to the quill, where a stop means is mounted on the cap means and a ball mounted for radial movement with respect to the insert means is biased radially inwardly, and where outward radial movement of the ball causes engagement between the ball and the stop means to prevent relative movement between the insert means and the cap means.
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