Patents Represented by Law Firm Klaas, Law, O'Meara & Malkin, P.C. Bruce E. Dahl, Esq.
  • Shaft furnace
    Patent number: 5890889
    Abstract: An improved hearth section for a shaft furnace may comprise a plurality of splines mounted to the side wall of the hearth section in spaced-apart circumferential positions so that each of the splines extends radially inward from the side-wall and into the interior of the hearth section. The floor of the hearth section may include a plurality of stand-offs positioned in generally spaced-apart relation and that extend upward from the floor and into the interior of the hearth section.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: April 6, 1999
    Assignee: Cyprus Amax Minerals Company
    Inventor: Richard A. Barstow