Patents Assigned to Prolizenz AG
  • Process for the delivery of molten metal to a caterpillar type mold
    Patent number: 4217947
    Abstract: A process is described for the delivery of molten metal to a caterpillar type mold which is inclined slightly to the horizontal and is used for casting wide strip, especially non-ferromagnetic metals, such as aluminium of aluminium alloys. The metal is fed through a delivery nozzle made of fire resistant material to a head of liquid metal in the mold either under the free surface of this head of metal or through this free surface on the head of liquid metal. Premature contact with the mold wall is avoided and the molten metal is fed in an almost pressureless manner.
    Type: Grant
    Filed: April 27, 1978
    Date of Patent: August 19, 1980
    Assignee: Prolizenz AG
    Inventors: Ivan Gyongyos, Martin Bolliger
  • Crucible
    Patent number: 4159891
    Abstract: A crucible, especially for containing melts, has multi-layered walls with an inner core of heat resistant material. A continuous coating layer of temperature resistant material is supported on the core. The coating layer at least partially defines a reservoir for melts to be contained in the crucible, and is composed of material resistant to attack by hot melts.
    Type: Grant
    Filed: August 10, 1977
    Date of Patent: July 3, 1979
    Assignee: Prolizenz AG
    Inventors: Walter Schmidt, Franz Sperner, Walter Stahlin
  • Crucible
    Patent number: 4055391
    Abstract: A crucible, especially for containing melts, has a multichamber construction wherein there is an outer chamber for containing a heat distribution medium and an inner chamber which acts as a receptacle for the melt.
    Type: Grant
    Filed: February 26, 1976
    Date of Patent: October 25, 1977
    Assignee: Prolizenz AG
    Inventors: Walter Schmidt, Walter Stahlin
  • Heat resistant crucible
    Patent number: 4052153
    Abstract: A crucible, for use in heating and/or retaining melts at elevated temperatures, includes a hollow holding member composed of a heat resistant material, and a thin-walled insert composed of a substance chemically resistant to oxygen and oxidizing substances and being removably supported in the holding member.
    Type: Grant
    Filed: February 26, 1976
    Date of Patent: October 4, 1977
    Assignee: Prolizenz AG
    Inventors: Werner J. Borer, Tibor Kugler, Walter Schmidt, Walter Stahlin
  • Crucible
    Patent number: 4049250
    Abstract: A crucible, for use in connection with oxidizing melts on the interior at elevated temperatures includes a crucible body composed of a material selected from the group consisting of platinum metals and tungsten, and a continuous coating of a metal disposed on the inner surface of the body, the coating metal being substantially non-alloying with the material and having a low affinity for oxygen.
    Type: Grant
    Filed: February 26, 1976
    Date of Patent: September 20, 1977
    Assignee: Prolizenz AG
    Inventor: Walter Schmidt
  • Method for heat treatment of material to be worked on, especially of aluminium or magnesium alloys
    Patent number: 3953247
    Abstract: For heat treatment metal pieces like billets, ingots, bars and the like are pre-heated by direct flame impingement in a pre-heating furnace and then transfered into a holding furnace with forced hot gas circulation where they are held for the time required at the desired heat treatment temperature.
    Type: Grant
    Filed: November 20, 1973
    Date of Patent: April 27, 1976
    Assignees: Prolizenz AG, Friedrich Wilhelm Elhaus
    Inventors: Friedrich Wilhelm Elhaus, Bernhard Hilge