Abstract: A device for retaining an object to a support and then separating it therefrom in a controlled sequence embodying a receptacle to be fixed to the support, a chimney fixed to the receptacle and a retaining sleeve adapted to couple a bearing surface of the object to a bearing surface of the receptacle or to release it. A piston slides along the chimney and has a locking configuration in which it holds the retaining sleeve in place and a release configuration. An ejector piston slides in the chimney to eject the object. Drive pressure operates first on the piston until it can operate on the ejector piston at the end of the movement of the piston.

Abstract: The method consists of separately embodying, by means of filamentary winding, the internal wall 11 of an annular caisson on a primary mandrel 9, of securing to this wall separately prefabricated stiffening elements 3, of juxtaposing to the primary mandrel an interpolated mandrel 17 inserted between the stiffening elements, of embodying above said interpolated mandrel the lateral walls and the external wall 12 of the caisson and of removing the single-piece assembly from the interpolated mandrel elements enclosed in the caisson.Application for the embodiment of load-bearing structures.

Abstract: Device for linking two objects, one of these objects (1) bearing sections of mobile bayonets (3) connected by connecting rods (4) to enable them to be controlled simultaneously. The other object bears fixed bayonet sections. Mobile bayonet sections (3) are preferably composed of two concentric rings (7) and (9) connected by a freeable ratchet mechanism (12) for breaking up the movement into one phase for establishing the link by the bayonets and one wedge clamping phase. The rotation of the bayonets is only authorized if the action of a locking system (20) is interrupted. Application for the linking of portions of aeronautical, space or submarine vehicles.