Patents by Inventor Hans Barmann

Hans Barmann 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 equalizing pressure in shaft furnaces
    Patent number: 4377278
    Abstract: An apparatus for equalizing the pressure in shaft furnaces which are operated at a pressure in excess of atmospheric pressure. At least one storage bin is connected to the furnace chamber, although isolated from the atmosphere and the furnace chamber by sealing valves. A gas pipeline serves to selectively supply or exhaust gas to the storage bin to equalize pressure. In one embodiment of the invention, two storage bins are interconnected by a gas pipeline and appropriate valves for equalizing pressure between the storage bins.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: March 22, 1983
    Assignee: Mannesmann Aktiengesellschaft
    Inventor: Hans Barmann