| 摘要 |
The clamp for the strap (1), consists of two sections (13,14) each provided with a groove (17) in which engages the curved sections (13,14). An edge (19) of each of these sections engages beneath the bottom curve of the S' shaped section to clamp up the strap by the screwing up of the bolt (15), while being guided by a U-shaped iron strip (3). A seal (4) is provided between the surface of the conduit (24) and the iron strip (3) to provide adequate sealing when the unit is clamped up.
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