Patents by Inventor Germain Le Viavant

Germain Le Viavant 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: 7302820
    Abstract: The invention relates to a method for changing the configuration of a rolling mill including at least two working rolls and two back-up rolls, means for applying a clamping load and two sets of hydraulic cambering cylinders, at least of both working rolls. According to the invention, at least two types of working rolls (C1, C2) are realized having, respectively a great diameter and a small diameter and the quarto configuration rolling mill is switched to a sexto configuration and conversely, the rolls with great diameter (C1, C?1) being used as working rolls in the quarto configuration and, in the sexto configuration, as intermediate rolls between each back-up roll and a roll with small diameter (C2, C?2) used as a working roll.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: December 4, 2007
    Assignee: Siemens VAI Metals Technologies SAS
    Inventor: Germain Le Viavant
  • Publication number: 20060196243
    Abstract: The invention relates to a method for changing the configuration of a rolling mill including at least two working rolls and two back-up rolls, means for applying a clamping load and two sets of hydraulic cambering cylinders, at least of both working rolls. According to the invention, at least two types of working rolls (C1, C2) are realised having, respectively a great diameter and a small diameter and the quarto configuration rolling mill is switched to a sexto configuration and conversely, the rolls with great diameter (C1, C?1) being used as working rolls in the quarto configuration and, in the sexto configuration, as intermediate rolls between each back-up roll and a roll with small diameter (C2, C?2) used as a working roll.
    Type: Application
    Filed: March 5, 2004
    Publication date: September 7, 2006
    Inventor: Germain Le Viavant
  • Patent number: 6874727
    Abstract: The invention relates to a device for guiding a band-type product (1) especially a metal band, comprising at least two conical deflectors (2, 2?) arranged head to foot. According to the invention, each deflector (2, 2?) comprises a fixed base (3, 3?) whereon are mounted, in the manner of satellites, a plurality of rotating guiding rolls (4, 4?) forming the same angle (A) with an axis (30, 30?) of the deflector (2, 2?), and said deflectors (2, 2?) are oriented relative to the longitudinal running axis (10) of the band (1) so that the latter comprises successively, in the running direction, an upstream portion (1a) tangent and perpendicular to an input generatrix (5a) on a first deflector (2), a central portion (1b) tangent and perpendicular, upwardly to an output generatrix (5b) of the first deflector (2) and, downwardly, to an input generatrix (5?a) on the second deflector (2?) and a downstream portion (1c) tangent and perpendicular to an output generatrix (5?b) of the second deflector (2?).
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: April 5, 2005
    Assignee: Vai Clecim - Le Polyedre
    Inventor: Germain Le Viavant
  • Publication number: 20040144150
    Abstract: The invention regards a device for disassembly of the rolls of a rolling mill by translation, successively, on internal (5) and external (55) rails whereon run the supporting rollers (7) of the chocks (3).
    Type: Application
    Filed: November 18, 2003
    Publication date: July 29, 2004
    Inventor: Germain Le Viavant
  • Publication number: 20030230619
    Abstract: The invention relates to a device for guiding a band-type product (1) especially a metal band, comprising at least two conical deflectors (2, 2′) arranged head to foot.
    Type: Application
    Filed: June 12, 2003
    Publication date: December 18, 2003
    Inventor: Germain Le Viavant
  • Patent number: 6244090
    Abstract: A roll mill comprising a retaining stand with two distant stanchions (1, 1b), at least two working rolls (2, 2′) each rotating respectively in two chocks, and means for applying bending loads to each end of both working rolls, said means comprising, for both chocks (4, 4′), two sets of, respectively, positive and negative bending jacks.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: June 12, 2001
    Assignee: Via Clecim
    Inventor: Germain Le Viavant