| 摘要 |
<p>The bar is used as a gymnastic facility; it is designed to be fixed to rings. It carries at each end a clamping device, each being is provided with a sleeve (11, 21) movable axially between the two ends of the bar but not rotatingly. The device is also provided with a stirrup (16, 26) opposite to the end of the sleeve, at the other end of the bar. The stirrup is dimensionned so that it is open in one position of the sleeve to hang from a ring (2), and so as to be closed by the end of the bar in the other position of the sleeve, to hold firmly the ring. </p> |
