Abstract: Shaped products are prepared by molding composite materials based on a fabric consisting of at least two superimposed single-directional layers of continuous fibers stitched together with thread, with the continuous fibers being oriented in different directions from each other. The composite fabric is stamped in a die by means of a stamp while applying at the same time a monitored tension to the fabric as the fabric is forced into the hollow of the die by a stamp. The monitored tension is modulated by interposing relaxation stages having a value slightly greater than zero. The fabric, while maintained under monitored tension, is impregnated with a quantity of resin or binder needed for the formation of the finished part.

Abstract: A screen for reflecting radiation, especially infra-red radiation for use at a temperature of at least 900.degree. C. The screen includes a first layer of a bright and polished material, which does not deteriorate when it is brought to the temperature, for reflecting at least a part of the infra-red radiation, and also includes a second layer of a material forming a support. Interposed between the first two layers is at least one third layer of material to block the radiation which issues from a preceding layer, the interposed layer being joined to its two neighboring layers.

Abstract: In a heat-insulating device comprising radiation-reflecting elements and a conduction-insulating material, the reflecting elements comprise a large number or reflecting flakes that are inserted into and distributed in the insulating material facing the surface through which the radiation has to be stopped. The said flakes are juxtaposed and partially overlap one another so as to conceal the said surface.

Abstract: A nozzle and a device for the application of the nozzle are disclosed. In the nozzle a mechanism is provided so that the dimensions of the hole for the flow of fluid can be varied according to the pressure differential between the inlet and the outlet. The above can be applied to the making of nozzles and/or devices, the delivery rate of which is directly proportionate to the differential pressure between the inlet and the outlet.

Abstract: The invention pertains to a heat-insulation wall comprising a superimposition of layers of materials which contribute to limiting the transmission of heat.In the invention, at least one of the said layers of material conducts heat in the directions parallel to the main plane of the wall and retards heat in the directions perpendicular to the said main plane.Application: heat insulation of structures transmitting temperature which is non-homogeneous on their surface opposite to a heat source.

Abstract: The invention relates to a heat insulating piece comprising a transporting duct of a storage enclosure for liquids or gases, and a heat insulating covering.At least one layer of heat insulating material is deposited on the outer surface of the wall of the duct or of the enclosure, and an outer wall is disposed around said layer and is maintained with stiffeners which also reinforce the structure of the piece.

Abstract: The device comprises a case in which there are provided an inlet orifice connected to the first point of pressure, a fluid return orifice and a passage of variable section interposed between these orifices. A slide valve member is movably mounted in the case for regulating the passage section in accordance with the differential pressure of the two points of pressure, in opposition to the action of an opposing spring. A detecting chamber is provided in the case and connected to the second point of pressure. The detecting chamber is separated from the inlet orifice by a sealing device having a section which varies in accordance with the displacement of the slide valve member and on which sealing device the differential pressure acts.