Patents by Inventor Klas B. O. Magnusson

Klas B. O. Magnusson 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: 4394566
    Abstract: A preheater for a casting ladle includes a stationary horizontal refractory deck having vertical apertures in which are disposed refractory plugs, each of which supports an electrical heating element that depends downwardly from the refractory deck. A lifting table is movable into registration with the set of depending electrical heating elements and is also adapted to support the casting ladle thereon and to raise it into surrounding relation with the electric heating elements that depend from the refractory deck. Individual defective heating elements can be removed and replaced during operation of other operative heating elements.
    Type: Grant
    Filed: October 29, 1981
    Date of Patent: July 19, 1983
    Assignee: Bulten-Kanthal Aktiebolag
    Inventor: Klas B. O. Magnusson