| 摘要 |
A clamp having a pair of clamping arms 12, 14 hinged together at one end and connectable together at the other end by means of a screw 1 and nut 4. The screw 1 has a main threaded section 2 for tightening of the nut 4 onto a seat 40 on an arm 14. It also has an unthreaded section of shaft, over which the nut 4 can move freely. At the distal end of the screw 1 is a further short threaded section 6, to retain the nut 4 on the screw 1, when disconnected from the main threaded section 2. The nut 4 can be removed totally from the screw 1 by engaging with the short threaded section 2, and rotating to disengage. The other end of one arm 12 having a clevis 24 into which a crossbar 28 on the screw 1 connects, the other arm 14 also having a clevis 36 into which the screw 1 pivotally fits, the upper surface of the clevis 36 providing a seat for the nut 4. |
