Patents Assigned to Isover Saint-Gobain c/o Saint-Gobain Recherche
  • Device for manufacturing shells of mineral fibers
    Patent number: 4913764
    Abstract: In the manufacture of insulating shells formed by a felt of mineral fibers wound around a mandrel, main pressing elements intervene as soon as the winding begins and remain in contact with the surface of the shell during the entire winding phase. Auxiliary pressing elements intervene only when the shell, during shaping, has reached a given outside diameter of, for example, 200 mm. The invention applies particularly to the insulation of conduits of small and average outside diameters.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: April 3, 1990
    Assignee: Isover Saint-Gobain c/o Saint-Gobain Recherche
    Inventors: Bernard Bichot, Bernard Louis
  • Molded composite panels
    Patent number: 4824714
    Abstract: A composite panel molded between a male stamping part and a female stamping part, and comprising a layer of mineral fibers having on selected zones particularly edges which are of three times the density which is normal in the panel, a surfacing layer destroyed under the action of the heat released by a knife above the said selected zones and a surfacing layer which covers the said slected zones, and a process for making the same are disclosed.The composite panel is used particularly as an inner trim for a motor vehicle.
    Type: Grant
    Filed: December 24, 1987
    Date of Patent: April 25, 1989
    Assignee: Isover Saint-Gobain c/o Saint-Gobain Recherche
    Inventor: Rene Gest