Patents by Inventor Jochen Schumann

Jochen Schumann 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).

  • Patent number: 5480127
    Abstract: In a method for melting and treating metals and metal alloys, especially steels, solid charge material is melted in a ladle. Then while passing a gas through the melt at least part of the time, at least one of the treatments of decarburization, dephosphorization, deoxidation, desulfurization, alloying and removing nonmetallic inclusions is performed in the same ladle. An apparatus for the practice of the method has two tracks (W1, W2) for the ladle (5), which are aligned in an approximate T-shape to one another, a preheating station (9) and a slag removal station (14) being arranged in the top part of the T and, at the intersection between the top part and the stem between the preheating station (9) and the slag removal station (14), the first treatment station (10) with a heating system is disposed, and at the free end of the stem of the T a second treatment station (16) for the vacuum treatment is disposed.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: January 2, 1996
    Assignee: Leybold Durferrit GmbH
    Inventors: Alok Choudhury, Jochen Schumann, Harald Scholz, Jan-Erwin Schindler
  • Patent number: 4049039
    Abstract: An arrangement for the manufacture of solid forging blocks with manipulator pins in which an electro-slag remelt process is used for filling an ingot having a vertical bore hole. At least one consumable electrode is used, and the ingot with the vertical bore is placed on a block table having at least one power connection in the region of the block table and flush with a depression for slag start material. The filling of the core zone is started with this depression having a depth of substantially at least 25% of the diameter of the block bore. A movable starting disk is applied as a lower boundary of the depression, and the slag start material is placed on top of the disk. After formation of liquid slag, the depression is exclusively filled from material of the consumable electrode. The power connection to the starting disk is fed along during the entire remelt process.
    Type: Grant
    Filed: October 15, 1976
    Date of Patent: September 20, 1977
    Assignee: Leybold-Heraeus GmbH & Co. Kg
    Inventors: Helmut Theodor Grof, Jochen Schumann, Anton Wamser, Rainer Schumann, Werner Friedrich Thomas