| 摘要 |
A device for tensioning or taking up slack in a flexible strap or other filamentary element comprises a lever (10), a drum formation (17) extending transversely from the lever along the first axis (14), and having a diametral slot (20) or passage therethrough along said first axis to receive a strap (24) or other filamentary element extending through the drum formation (17) transversely to the first axis (14). The lever (10) carries a retaining clip (28, 30) remote from the drum formation (17) and extending from the lever in the same direction as the drum formation, whereby a strap (24) passed through the slot (20) can be tensioned, or the slack therein taken up, by rotating the device about the first axis (14), by means of the lever (10), to wind the strap (24) around the drum formation (17). The retaining clip (28, 30) can thereafter be engaged with a part of the strap (24) extending from the drum formation (17), to prevent reverse rotation of the device about the axis (14) with consequent unwinding of the strap. The retaining clip (28, 30) may incorporate an anti-tamper closure to prevent disengagement of the retaining clip from the strap (24) and which cannot readily be released once closed, without specialised equipment or without inflicting obvious damage on the device. |
