| 摘要 |
The field of the invention is that of closures used for one or all types of recesses, passages and apertures and is a highly effective and simple means of ensuring safety, blocking, securing and sealing. The invention ensures closing over the complete periphery, that is to say the periphery to be secured, the geometry of which is as it were variable. The closing operation is carried out by driving the elements 3 towards the outside of the leaf 4 so as to insert them in a frame. These movable elements 3, when they are in the unlocked position, are retracted within the leaf in a U-shaped receptacle. The parts 3 forming a peripheral bolt and their compensating part 2 are operated by means of the set of parts 1. <IMAGE>
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