Patents by Inventor Franz Keiser

Franz Keiser 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: 7204953
    Abstract: A cooling plate (1) made of copper or a copper alloy for blast furnaces has a plurality of bore holes (6) for accommodating a cooling medium. The bore holes (6) are connected to a cooling medium intake (12) and a cooling medium outlet via connecting pipes (9) that are welded onto the cold side of the plate (5). Connecting pipes (9), at their plate ends (14), are furnished with flanges (15) that are formed by being flanged open. These flanges (15) are set into recesses (17) in the cold side of the plate (5), and are welded at their circumference by V seams (19) to the cold side of the plate (5).
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: April 17, 2007
    Assignee: KM Europa Metal Aktiengesellschaft
    Inventors: Christof Dratner, Franz Keiser, Reinhard Hintemann, Frank Böert, Hans-Günter Wobker
  • Publication number: 20060017202
    Abstract: A cooling plate (1) made of copper or a copper alloy for blast furnaces has a plurality of bore holes (6) for accommodating a cooling medium. The bore holes (6) are connected to a cooling medium intake (12) and a cooling medium outlet via connecting pipes (9) that are welded onto the cold side of the plate (5). Connecting pipes (9), at their plate ends (14), are furnished with flanges (15) that are formed by being flanged open. These flanges (15) are set into recesses (17) in the cold side of the plate (5), and are welded at their circumference by V seams (19) to the cold side of the plate (5).
    Type: Application
    Filed: April 21, 2005
    Publication date: January 26, 2006
    Inventors: Christof Dratner, Franz Keiser, Reinhard Hintemann, Frank Boert, Hans-Gunter Wobker
  • Patent number: 6145579
    Abstract: A liquid-cooled chill mold for continuous casting of thin steel slabs is disclosed whose cross-sectional length is a multiple of the cross-sectional width, having two opposing wide side walls, each with a copper liner and a backing plate, and narrow side walls delimiting the width of the slab, with the copper liners that delimit the mold cavity being detachably attached to the backing plates by metal studs made of a CuNiFe alloy and the metal studs being welded to the copper liners.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: November 14, 2000
    Assignee: KM Europa Metal AG
    Inventors: Wolfgang Stagge, Gerhard Hugenschutt, Franz Keiser