| 摘要 |
There is disclosed a strip structure (10) indented for clamping engagement on a flange or like member, the strip structure (10) having a channel defined by a base (12) and two opposed side walls (13, 14), each side wall being provided with an elongate limb (16, 17) directed inwardly and towards the base (12) such that the limbs (16, 17) abut at their free end regions (20, 21); wherein that face of each limb (16, 17) which faces the corresponding face of the other limb (16, 17) is straight or substantially straight over a portion of the limb in the region of the free end (20, 21); wherein the side walls (13, 14) are also each provided with an inward projection (26, 27) nearer the base (12) of the channel than the root of the limb (16, 17); and wherein each of the limbs (16, 17) is provided on that face which faces the side wall (13, 14) with a recess (22, 23) in which the projection may be accommodated; the arrangement being such that, in use, when the strip structure (10) is being clamped on a flange or like member, the flange causes the limbs (16, 17) to be moved apart, with the projections (26, 27) being accommodated in the corresponding recess (22, 23), whereby the clamping may be effected without undue force, but, when an attempt is made to remove the strip structure (10) from the flange, the free end regions in (20, 21) of the limbs (16, 17) grip the flange and the limbs (16, |
