Patents by Inventor Ralf Hoven

Ralf Hoven 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).

  • Method and device for cleaning the door of a coke oven
    Patent number: 8038800
    Abstract: The invention relates to a method and a device for cleaning the door of a coke oven, said door comprising a sealing edge and a membrane that is attached to the door panel of the coke oven. According to said method, cleaning tools comprising jet nozzles, which are supplied with a flow medium at high pressure, are situated and displaced back and forth in the region between the sealing edge and the door panel of the coke oven, in such a way that the interior surface of the membrane and the sealing edge are cleaned. The coke oven door is cleaned directly after the coke oven chamber is opened, by at least one jet nozzle element, which is supplied with compressed air and is displaced along the sealing edges. The jet nozzles are oriented in such a way that the air hits the surface to be cleaned at an acute angle.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: October 18, 2011
    Assignees: DMT GmbH, RAG Aktiengesellschaft
    Inventors: Frank Rossa, Hans-Josef Giertz, Friedrich Huhn, Jürgen George, Ralf Hoven, Detlef Mattern, Friedrich-Wilhelm Cyris, Joachim Strunk, Heinz Opdenwinkel
  • Method and Device for Cleaning the Door of a Coke Oven
    Publication number: 20100154825
    Abstract: The invention relates to a method and a device for cleaning the door of a coke oven, said door comprising a sealing edge and a membrane that is attached to the door panel of the coke oven. According to said method, cleaning tools comprising jet nozzles, which are supplied with a flow medium at high pressure, are situated and displaced back and forth in the region between the sealing edge and the door panel of the coke oven, in such a way that the interior surface of the membrane and the sealing edge are cleaned. The coke oven door is cleaned directly after the coke oven chamber is opened, by at least one jet nozzle element, which is supplied with compressed air and is displaced along the sealing edges. The jet nozzles are oriented in such a way that the air hits the surface to be cleaned at an acute angle.
    Type: Application
    Filed: August 7, 2006
    Publication date: June 24, 2010
    Inventors: Frank Rossa, Hans-Josef Giertz, Friedrich Huhn, Jürgen George, Ralf Hoven, Detlef Mattern, Friedrich-Wilhelm Cyris, Joachim Strunk, Heinz Opdenwinkel
  • Seals for coke oven doors and the use thereof
    Publication number: 20060151961
    Abstract: The invention relates to a seal for coke oven doors comprising an encircling door frame, which is closed at the top on the oven chamber and which has even sealing surfaces on the exterior thereof. The inventive seal also comprises a door body, which can be fixed to the door frame, and comprises an encircling sealing element, which is attached to the door body and which rests against the door frame when the door is closed. A comb-shaped sealing strip (1) having a sealing edge (2) and notches (3) is attached to the door body.
    Type: Application
    Filed: January 21, 2004
    Publication date: July 13, 2006
    Inventors: Hans-Josef Giertz, Detlef Mattern, Ralf Hoven, Jurgen George