Patents by Inventor Rüdiger Holz

Rüdiger Holz 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: 9656312
    Abstract: The invention concerns a 4-high/6-high/18 HS cassette-type roll stand in which bending force is transmitted to bending journals (6) of roll inserts (7) by piston-cylinder units that are connected with Mae West blocks (3). Here, the piston at the piston rod (1) is fixedly connected with the Mae West block (3) and the cylinders (4) fit around the bending journals (6) at the inserts (7) of the rolls, so that thereby bending force can be transmitted directly to the bending journals (6) of the roll inserts (7).
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: May 23, 2017
    Assignee: SMS GROUP GMBH
    Inventors: Konrad Schunn, Lothar Zwingmann, Holger Pulst, Arnulf Wurm, Ruediger Holz
  • Patent number: 9038430
    Abstract: The invention relates to a cluster arm arrangement for the intermediate roll sets of 18 HS roll stands, wherein arranged between the chock at the operating side and the chock at the drive side are cluster arms which are pivotable laterally of the intermediate roll and in which the lateral backing rolls are integrated for support of the working rolls in the stand. In that case, arranged between the chock (1) and the cluster arm (2) is a pivot pin (3), which is fixedly connected with the cluster arm and about the axis of which the cluster arm (2) is pivotable, and a locking means for the cluster arm (2) as well as an abutment (6) with a restoring spring (6) are operatively arranged on the pivot pin (3) as a compact unit in the region between the cluster arm (2) and chock (1).
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: May 26, 2015
    Assignee: SMS SIEMAG AG
    Inventors: Konrad Schunn, Lothar Zwingmann, Holger Pulst, Arnulf Wurm, Ruediger Holz
  • Publication number: 20130192327
    Abstract: The invention concerns a 4-high/6-high/18 HS cassette-type roll stand in which bending force is transmitted to bending journals (6) of roll inserts (7) by piston-cylinder units that are connected with Mae West blocks (3). Here, the piston at the piston rod (1) is fixedly connected with the Mae West block (3) and the cylinders (4) fit around the bending journals (6) at the inserts (7) of the rolls, so that thereby bending force can be transmitted directly to the bending journals (6) of the roll inserts (7).
    Type: Application
    Filed: July 7, 2010
    Publication date: August 1, 2013
    Applicant: SMS Siemag AG
    Inventors: Konrad Schunn, Lothar Zwingmann, Holger Pulst, Arnulf Wurm, Ruediger Holz
  • Publication number: 20120151982
    Abstract: The invention relates to a cluster arm arrangement for the intermediate roll sets of 18 HS roll stands, wherein arranged between the chock at the operating side and the chock at the drive side are cluster arms which are pivotable laterally of the intermediate roll and in which the lateral backing rolls are integrated for support of the working rolls in the stand. In that case, arranged between the chock (1) and the cluster arm (2) is a pivot pin (3), which is fixedly connected with the cluster arm and about the axis of which the cluster arm (2) is pivotable, and a locking means for the cluster arm (2) as well as an abutment (6) with a restoring spring (6) are operatively arranged on the pivot pin (3) as a compact unit in the region between the cluster arm (2) and chock (1).
    Type: Application
    Filed: July 6, 2010
    Publication date: June 21, 2012
    Inventors: Konrad Schunn, Lothar Zwingmann, Holger Pulst, Arnulf Wurm, Ruediger Holz
  • Patent number: 7367209
    Abstract: The invention relates to a method for the optimization of shift strategies, as a function of the strip width, for best possible usage of the advantages of CVC/CVCPlus technology in operation of strip-edge oriented shifts in 4-/6-roller stands, comprising a pair of working rollers and a pair of support rollers for a 4-roller stand and, in addition, a pair of intermediate rollers for a 6-roller stand, whereby at least the working rollers and the intermediate rollers cooperate with devices for axial shifting, characterized in that selection of the shift position (VP), for the shifting working/intermediate rollers, is made as a function of strip width. The working/intermediate rollers are then positioned in various positions (P), relative to the strip edge and, within differing strip width ranges (B), the shift position (VP) of each roller is given by an incremental linear progressive function.
    Type: Grant
    Filed: November 11, 2004
    Date of Patent: May 6, 2008
    Assignee: SMS Demag AG
    Inventors: Andreas Ritter, Rüdiger Holz
  • Patent number: 7181949
    Abstract: A method for the strip-edge-oriented shifting of the intermediate rolls (11, 11?) in a six-roll rolling mill comprising respectively a pair of workrolls (10, 10?), intermediate rolls (11, 11?) and backup rolls (12, 12?), whereby at least the intermediate rolls (11, 11?) and workrolls (10, 10?) have devices for axial shifting cooperating with them and each intermediate roll (11, 11?) has a barrel elongated by the amount of the CVC-shifting stroke and a one sided setback (x) in the region of the strip edge. The method is characterized in that the upper intermediate roll (11) is shifted in the direction of the drive side AS) and the lower intermediate roll (11?) is shifted in the direction of the service side (BS)—or conversely—relative to the neutral shift position (Szw=0 mm) symmetrically to the rolling mill center (y—y) be respectively the same amount in the direction of their (x—x).
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: February 27, 2007
    Assignee: SMS Demag Aktiengesellschaft
    Inventors: Klaus-Dieter Haberkamm, Andreas Ritter, Rüdiger Holz