Abstract: A machining tool for machining a panel is arranged in a working area of a machining surface of the panel. A holding element is arranged in a support area located on a holding surface of the panel, opposing the machining surface and on an opposite side in relation to the panel to the working area. The operating machining tool and the holding element are displaced on the panel in a co-coordinated manner according to movement presenting at least one component tangentially to the surface of the panel in such a way as to maintain the opposition of the support area and the working area during the displacement of the tool in order to machine at least a part of the machining surface.

Abstract: A machining tool for machining a panel is arranged in a working area of a machining surface of the panel. A holding element is arranged in a support area located on a holding surface of the panel, opposing the machining surface and on an opposite side in relation to the panel to the working area. The operating machining tool and the holding element are displaced on the panel in a co-coordinated manner according to movement presenting at least one component tangentially to the surface of the panel in such a way as to maintain the opposition of the support area and the working area during the displacement of the tool in order to machine at least a part of the machining surface.

Abstract: The invention relates to a structure intended to support a directional apatus such as an antenna placed substantially at the top of a mast. In addition to girders (4) orthogonal to the mast (3), a plurality of elements (12) for wind bracing are provided that extend a plane (P1) defined by the girders (4). Assuming the mast to be in the erected position, each of the wind bracing elements (12) is interposed via removable connection means (13, 14) between one end (8) of the girders, a fixed point (9), which may be at ground level, and the mast, substantially below a zone (15) of the mast (3) above which the directional apparatus (2) is supported. Each wind bracing element is connected to the fixed point (9) by at least one group of guy wires. Each group of guy wires is located in a plane that bisects the dihedron coinciding with the longitudinal (vertical) axis of the mass and passes through the axes of the guy wires.

Abstract: The invention relates to a device for wind bracing of the vertical members of a lattice mast. It is characterized in that it is provided at its ends (5, 6) with detachable means (8, 9) for joining it to its vertical members, which in turn are provided with complementary means (10).

Abstract: The invention relates to a cylindrical mast element comprising a tube (2) one end (4) of which is extended by a sleeve tube (5), and each end of which has plane, inclined surfaces (7, 8). Its wall is constituted by successive coils of pieces of fabric impregnated by polymerizable resin, all of which is then polymerized.The element has, in the zone (9) near a beveled end (6) facing the sleeve tube (5) of an adjacent coupling element and corresponding to the coupling zone (9), at least one additional piece of oriented fabric, which is disposed in such a manner that its greater strength is in the transverse direction of the mast. A plurality of elements may be joined for constructing a mast. To this end, the tubular elements are internested end to end.

Abstract: Lattice-type structure, formed by uprights disposed like the parallel edges of a regular prism, and by windbracing panels connecting said uprights in two's via sleeves fitted and fixed on these respective uprights, said sleeves comprising at least one pair of projecting sockets for connecting the upright with two adjacent windbracing panel elements.