Patents by Inventor Heinz Hofinghoff

Heinz Hofinghoff 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: 20110198786
    Abstract: A method continuously creates a bainite structure in a carbon steel, especially a strip steel by austenitizing the carbon steel; introducing the austenitized carbon steel into a bath containing a quenching agent; adjusting the carbon steel to the transformation temperature for bainite and maintaining the transformation temperature for a certain period of time; and then cooling the carbon steel. The carbon steel stays in the bath until a defined percentage of the bainite structure relative to the total structure of the carbon steel has formed. Residues of the quenching agent are removed from the surface of the carbon steel by blowing the same off when the carbon steel is discharged from the bath, and the remaining structure components of the carbon steel are then transformed into bainite in an isothermal tempering station without deflecting the carbon steel at all.
    Type: Application
    Filed: April 18, 2011
    Publication date: August 18, 2011
    Applicants: C.D. WAELZHOLZ GMBH, EBNER INDUSTRIEOFENBAU GMBH
    Inventors: Werner Kaiser, Heinz Höfinghoff, Hans-Toni Junius, Michael Hellmann, Peter Ebner, Heribert Lochner
  • Patent number: 7972452
    Abstract: A method continuously creates a bainite structure in a carbon steel, especially a strip steel by austenitizing the carbon steel; introducing the austenitized carbon steel into a bath containing a quenching agent; adjusting the carbon steel to the transformation temperature for bainite and maintaining the transformation temperature for a certain period of time; and then cooling the carbon steel. The carbon steel stays in the bath until a defined percentage of the bainite structure relative to the total structure of the carbon steel has formed. Residues of the quenching agent are removed from the surface of the carbon steel by blowing the same off when the carbon steel is discharged from the bath, and the remaining structure components of the carbon steel are then transformed into bainite in an isothermal tempering station without deflecting the carbon steel at all.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: July 5, 2011
    Assignees: C.D. Wälzholz GmbH, Ebner Industrieofenbau GmbH
    Inventors: Werner Kaiser, Heinz Höfinghoff, Hans-Toni Junius, Michael Hellmann, Peter Ebner, Heribert Lochner
  • Publication number: 20090139616
    Abstract: The invention relates to a method for continuously creating a bainite structure in a carbon steel, especially a strip steel. The method comprises the following steps: the carbon steel (1) is austenitized (3) at a temperature exceeding the austenitizing temperature; the austenitized carbon steel (1) is introduced into a bath (2) containing a quenching agent (21) in order to cool the carbon steel (1) to a temperature lying below the austenitizing temperature; the carbon steel (1) is adjusted to the transformation temperature for bainite and is maintained (13) at the transformation temperature for a certain period of time; and the carbon steel is then cooled (17).
    Type: Application
    Filed: October 31, 2006
    Publication date: June 4, 2009
    Inventors: Werner Kaiser, Heinz Hofinghoff, Hans-Toni Junius, Michael Hellmann, Peter Ebner, Heribert Lochner
  • Publication number: 20080006350
    Abstract: The invention relates to a method for shaping wire-shaped and rod-shaped starting materials by rolling, especially for rolling flat profiled elements consisting of a wire rod. The starting material is heated in a heating station at a desired temperature, shaped during at least one rolling process, and then cooled. According to the invention, once the starting material has been heated in the heating station, it is cooled in a cooling station to a pre-determinable rolling temperature; it is then shaped into a flat profiled element by rolling close to the gauge block, and then cooled and/or subjected to a subsequent treatment according to joining properties to be correspondingly adjusted. In this way, a series of different methods can be carried out by means of an installation for rolling starting materials with a patented structure, an austenite structure, a bainite structure or an undercooled austenite structure.
    Type: Application
    Filed: September 13, 2005
    Publication date: January 10, 2008
    Inventors: Hans-Toni Junius, Heinz Hofinghoff, Norbert Brachthauser, Victor Blinov, Rudolf Kawalla
  • Patent number: 6874344
    Abstract: The present invention relates to a method for cold-rolling metallic rolling stock (4), in which the rolling stock (4) passes through the roll nip (3) between oppositely driven rollers (2) at room temperature in order to undergo a plastic shape change. To avoid the problems caused by the use of liquid coolants and to achieve an improved surface quality of the rolling stock (4), the invention proposes that inert gas, which is at a lower temperature than the rolling-stock temperature in the roll nip, is blown into the region of the roll nip (3). The invention also relates to a cold-rolling stand for carrying out this method.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: April 5, 2005
    Assignee: C. D. Wälzholz-Brockhaus GmbH
    Inventors: Hans-Toni Junius, Heinz Hofinghoff
  • Patent number: 5830535
    Abstract: A process is for producing a ski edge for incorporation into a ski consisting of rolled and heat-treated material, at least part of the surface of which is coated with a bonding agent. In order to reduce the labour and expense and environmental pollution in the production of ski edges and improve the reliability of the bond between the edges and body of the ski, the ski edge strip material is coated with the bonding agent (primer) at least in the region of the bonding surfaces in a continuous process following the heat treatment. Thus, the ski edge strip material is kept under reducing conditions directly before coating in such a way that the surface of the strip material is free of oxide before coating.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: November 3, 1998
    Assignee: C. D. Walzholz Produktions-Gesellschaft mbH
    Inventors: Hans-Toni Junius, Heinz Hofinghoff