Patents by Inventor Heinrich Illemann

Heinrich Illemann 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).

  • Apparatus for introducing gas to molten metal within a vessel
    Patent number: 4657226
    Abstract: The invention relates to apparatus including a gas purge brick for metallurgical furnaces and vessels, which is connected with a gas supply pipe on its cold end remote from the interior of the furnace or vessel. Within the gas supply pipe there is centrally arranged a solid metal core which is surrounded by a helix. Optionally, at least the part of the gas supply pipe adjoining the cold brick end is surrounded by a protecting tube filled with a refractory material.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: April 14, 1987
    Assignee: Osterreichisch-Amerikanische Magnesit Aktiengessellschaft
    Inventors: Heinrich Illemann, Gustav M. Heinricher
  • Clamping device for screen bottoms
    Patent number: 3968033
    Abstract: A clamping device adapted to tighten a screen bottom onto a screen frame in a screening apparatus. The clamping device is provided with means disposed on one side of the screen frame for pneumatically tightening one side of the screen bottom to that side of the screen frame, the opposite side of the screen bottom being attached to the opposite side of the screen frame. The pneumatic tightening means is provided with a flexible inflatable hose and a compressed air source connected to the hose for inflating and deflating the hose.
    Type: Grant
    Filed: February 21, 1975
    Date of Patent: July 6, 1976
    Assignee: Osterreichisch-Amerikanische Magnesit Aktiengesellschaft
    Inventors: Heinrich Illemann, Josef Urbanek