Patents by Inventor Hans-Jurgen Nowak

Hans-Jurgen Nowak 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: 6293133
    Abstract: A method of rolling finished sections from preliminary sections by means of roll stand arrangements which operate in reversing operation and include a compact rolling group composed of a first universal stand at the entry side and a second universal stand at the exit side and an intermediate edging stand arranged between the universal stands, and a roughing group arranged in front of the compact rolling group and composed of vertical roll stands and horizontal roll stands and/or universal stands. A rectangular preliminary section or a preliminary section having the approximate final dimensions is preshaped in the roll stands of the roughing rolling group in a number of shape changing passes and/or shape reduction passes, possibly reversing with or without the use of selectable grooves. Subsequently, the section is further shaped in the compact rolling group in several shape changing passes or shape reduction passes in the universal stand on the entry side.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: September 25, 2001
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Ulrich Svejkovsky, Hans-Jürgen Nowak, Georg Engel, David A. Fournie, Lloyd M. Schmelzle
  • Patent number: 6205834
    Abstract: A method of rolling finished sections from preliminary sections by means of roll stand arrangements which operate in reversing operation and include a compact rolling group composed of a first universal stand at the entry side and a second universal stand at the exit side and an intermediate edging stand arranged between the universal stands, and a roughing group arranged in front of the compact rolling group and composed of vertical roll stands and horizontal roll stands and/or universal stands. A rectangular preliminary section or a preliminary section having the approximate final dimensions is preshaped in the roll stands of the roughing rolling group in a number of shape changing passes and/or shape reduction passes, possibly reversing with or without the use of selectable grooves. Subsequently, the section is further shaped in the compact rolling group in several shape changing passes or shape reduction passes in the universal stand on the entry side.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: March 27, 2001
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Ulrich Svejkovsky, Hans-Jürgen Nowak, Georg Engel, David A. Fournie, Lloyd M. Schmelzle
  • Patent number: 6116072
    Abstract: A method of rolling finished sections from preliminary sections by means of roll stand arrangements which operate in reversing operation and include a compact rolling group composed of a first universal stand at the entry side and a second universal stand at the exit side and an intermediate edging stand arranged between the universal stands, and a roughing group arranged in front of the compact rolling group and composed of vertical roll stands and horizontal roll stands and/or universal stands. A rectangular preliminary section or a preliminary section having the approximate final dimensions is preshaped in the roll stands of the roughing rolling group in a number of shape changing passes and/or shape reduction passes, possibly reversing with or without the use of selectable grooves. Subsequently, the section is further shaped in the compact rolling group in several shape changing passes or shape reduction passes in the universal stand on the entry side.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: September 12, 2000
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Ulrich Svejkovsky, Hans-Jurgen Nowak, Georg Engel
  • Patent number: 6085566
    Abstract: A rolling train for rolling flat steel using universal stands having--instead of vertical rolls-adjustable support members for pairs of loose vertical rollers arranged in the areas of the stands. The rolling train includes a roughing rolling group with vertical two-high stand or universal stand and horizontal two-high stand and a compact rolling group composed of two tandem universal stands and arranged following the roughing rolling group, wherein the two universal stands of the compact rolling group are equipped with non-driven adjustable vertical rollers.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: July 11, 2000
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Ulrich Svejkovsky, Hans-Jurgen Nowak, Georg Engel
  • Patent number: 6058754
    Abstract: A rolling train for rolling flat steel using universal stands having--instead of vertical rolls--adjustable support members for pairs of loose vertical rollers arranged in the areas of the stands. The rolling train includes a roughing rolling group with vertical two-high stand or universal stand and horizontal two-high stand and a compact rolling group composed of two tandem universal stands and arranged following the roughing rolling group, wherein the two universal stands of the compact rolling group are equipped with non-driven adjustable vertical rollers.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: May 9, 2000
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Ulrich Svejkovsky, Hans-Jurgen Nowak, Georg Engel
  • Patent number: 6035683
    Abstract: A method of casting and rolling and a roll stand arrangement for rolling finished sections (sheet piling sections) from a preliminary section which arrives from a continuous casting machine and has approximate final dimensions. The method utilizes roll stand arrangements which operate in a rolling line in a reversing operation. A roughing rolling group has in a first rolling line a runout roller table and a transverse transport device following the runout roller table and in a second rolling line a parallel run-in roller table for a compact tandem stand group. A horizontal stand of the roughing rolling group and/or an intermediate edging stand of the compact tandem stand group each have two selectable grooves, wherein a universal stand on the exit side of the compact tandem group has one or more two-high horizontal stands with grooved rolls.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: March 14, 2000
    Assignees: SMS Schloemann-Siemag Aktiengesellschaft, Chaparral Steel
    Inventors: David A. Fournie, Lloyd M. Schmelzle, Georg Engel, Ulrich Svejkovsky, Hans-Jurgen Nowak
  • Patent number: 5970773
    Abstract: A rolling plant for rolling all types of finished sections from flat blooms or preliminary sections with close to final dimensions, wherein the blooms or preliminary sections arrive from a continuous casting plant and may be stored in reheating furnaces arranged in front of the plant and/or may be maintained at rolling temperature. The rolling plant includes a compact rolling group with two universal stands arranged closely one behind the other and an edging stand arranged between the universal stands. A roughing group is arranged in front of and parallel offset to the compact rolling group, wherein the roughing group is composed of a group of a vertical stand, a horizontal stand and a universal stand arranged closely one behind the other.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: October 26, 1999
    Assignee: SMS Schloeman-Siemag Aktiengesellschaft
    Inventors: Georg Engel, Ulrich Svejkovsky, Hans-Jurgen Nowak
  • Patent number: 5904061
    Abstract: A method of rolling finished sections from a preliminary section by initially carrying out five or more passes and reversing passes between a universal stand and a horizontal stand, wherein profiled horizontal rolls of the universal stand form in the section two indentations located opposite of each other and offset relative to a longitudinal center of the section. Subsequently, head and flange projections of an emerging rail section are preshaped and the indentations are laterally reduced by one of alternative grooves of a horizontal stand of a preliminary rolling group. The emerging rail section is rolled in a reversing operation after three or more passes in the universal stand and in two alternative grooves of an intermediate upsetting stand. The section is finish-rolled into a rail section in an additional pass through the universal stand.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: May 18, 1999
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Georg Engel, Paul Josef Mauk, Hans-Jurgen Nowak, Ulrich Svejkovsky