Patents Assigned to Houilleres du Bassin du Nord et du Pas-de-Calais
  • Furnace walls which can be used at high temperatures
    Patent number: 4193355
    Abstract: The present invention relates to new furnace walls comprising recesses for the introduction of fluids, characterized in that they comprise:a strong refractory material,a shield of refractory metallic material,supports,plates of disposable material anchorable to the said supports,and, in the recesses, devices for introduction and distribution of fluids,the said walls being particularly utilizable for furnaces which operate at an internal temperature of at least 900.degree. C.
    Type: Grant
    Filed: April 18, 1978
    Date of Patent: March 18, 1980
    Assignee: Houilleres du Bassin du Nord et du Pas de Calais
    Inventors: Alban Dondeyne, Maurice Marchasson, Paul Ravez, Louis Soubrier
  • Factory-made habitation cell
    Patent number: 3971175
    Abstract: Habitation cells are prefabricated and comprise a floor with U-shaped irons at the corner. The cell in place on a floor rests on these irons.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: July 27, 1976
    Assignee: Houilleres du Bassin du Nord et du Pas-de-Calais
    Inventors: Charles Boel, Jean-Pierre Cottin, Francois Guitard