Patents by Inventor Bert Orland Wasmund

Bert Orland Wasmund 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).

  • Electric furnace with conductive hearth
    Patent number: 5867523
    Abstract: An improved return path for electric current through a conductive hearth of a direct current arc furnace is provided by pressing a ring of water cooled copper blocks into the periphery of a sidewall of the hearth of the furnace, the hearth having zones of conductive refractory providing an electrical path between the contents of the furnace of the copper blocks. The hearth is compressed by a tensioned peripheral band which may also support the blocks. The peripheral water cooled copper blocks may be divided into multiple groups, each group connected to one pole of a direct current power supply, the opposite pole of which is connected to a suspended electrode, permitting control of arc deflection.
    Type: Grant
    Filed: May 28, 1996
    Date of Patent: February 2, 1999
    Assignee: Hatch Associates Ltd.
    Inventors: Bert Orland Wasmund, Thomas Lai Wai Ma, Nils Walter Voermann