Patents by Inventor Pierre Rollet

Pierre Rollet has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Blast-furnaces in the region of the pouring apertures
    Patent number: 4768755
    Abstract: The invention concerns a method for in particular repairing the region of the pouring apertures of a blast-furnace which mainly comprises employing a support element (10) independent of the casing (3) and on which bear the blocks (17) of refractory material. The support element (10) is first of all positioned relative to these blocks and then fixed in the final position relative to the casing (3), after which there is welded around the support element (10) and to the casing a sheet of metal which provides the seal between the support element and the casing.
    Type: Grant
    Filed: August 23, 1985
    Date of Patent: September 6, 1988
    Assignee: Union Siderurgique du Nord et de l'Est de la France (USINOR)
    Inventor: Pierre Rollet