Patents by Inventor Andreas Gramer

Andreas Gramer 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).

  • Publication number: 20040020258
    Abstract: The invention relates to a method for tension levelling a cold-rolled strip, whereby the strip passes through a series of brake rolls and a series of traction rolls and in the course of its extension is subjected to traction between the two series of rolls. The strip is bent under traction in a series of high-traction rolls, located between the brake roll and the traction roll series, in order to increase the degree of levelling. To achieve this, the series of high-traction rolls between the brake and the traction rolls has at least two traction rolls for generating the strip traction and bending operation.
    Type: Application
    Filed: February 20, 2003
    Publication date: February 5, 2004
    Inventors: Holger Behrens, Hans Georg Hastung, Ralf Ulrich, Bernd Kreft, Stefan Melster, Bode Falkenhahn, Andreas Gramer
  • Publication number: 20030000551
    Abstract: The invention relates to a method and a device for treating surfaces of metallic strip material (1), especially for pickling rolled material, in a treatment channel (2), with a pickling medium (3) containing acid. Jets (4)are set in the direction which the strip is transported (5) at the entrance to the channel (2a) and in the opposite direction that in which the strip is transported at the exit of the channel (2b). The aim of the invention is to produce a closed liquid film with some turbulence on the surface of the strip. Said film should be maintained as far as the exit (2b) of the channel. To this end, additional jets (4) between the channel entrance (2a) and the channel exit (2b) are oriented in the opposite direction to the direction in which the strip is transported (5) and the pickling medium (3) is further delayed in flowing out at the channel exit (2 b) by mechanical resistance devices (7) situated in the path of the transport channel (6).
    Type: Application
    Filed: June 27, 2002
    Publication date: January 2, 2003
    Inventors: Peter Schuler, Rolf Bunten, Holger Behrens, Bodo Block, Michael Haentjes, Andreas Gramer
  • Patent number: 6161406
    Abstract: A method of preadjusting cold deforming plants, such as cold rolling trains, skin pass stands, stretcher-and-roller levelers, straightening machines, and the like, wherein the hardness of the material to be deformed is measured shortly before the cold deformation of the material and is utilized for correcting its hardening curve and the preadjustment of the cold deforming plant based on the measurement. The standard hardening curve of a material or a group of materials with corresponding standard values of hardness, yield strength, tensile strength, etc., can be corrected by an additive or multiplicative linkage with a correction member which contains at least one tensile strength determined through the measured hardness value.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: December 19, 2000
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Andreas Peters, Andreas Gramer, Hans-Peter Richter