Patents by Inventor Pavel Hronek

Pavel Hronek 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).

  • Method of production of high-strength hollow bodies from multiphase martensitic steels
    Patent number: 8852367
    Abstract: A method of production of high-strength hollow bodies from multiphase martensitic steels includes a heating process, a forming process and a cooling process. A heating device heats hollow steel stock to the austenitic temperature of the material from which the stock is made. The stock is then converted by deformation in a forming device into a hollow body having the final shape. A cooling device thereafter cools the hollow body such that the material with the original austenite microstructure refined by deformation during the forming process cools to a temperature at which incomplete transformation of austenite to martensite occurs. The retained austenite stabilization is performed in an annealing device by diffusion-based carbon partitioning within the material from which the hollow body is made. The hollow body is cooled in a cooling device to ambient temperature after stabilization.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: October 7, 2014
    Assignee: Zapadoceska Univerzita v Plzni
    Inventors: Bohuslav Ma{hacek over (s)}ek, Hana Jirková, Pavel Hronek, Ctibor {hacek over (S)}tádler, Miroslav Urbánek
  • Method of Production of High-Strength Hollow Bodies from Multiphase Martensitic Steels
    Publication number: 20120273095
    Abstract: A method of production of high-strength hollow bodies from multiphase martensitic steels includes a heating process, a forming process and a cooling process. A heating device heats hollow steel stock to the austenitic temperature of the material from which the stock is made. The stock is then converted by deformation in a forming device into a hollow body having the final shape. A cooling device thereafter cools the hollow body such that the material with the original austenite microstructure refined by deformation during the forming process cools to a temperature at which incomplete transformation of austenite to martensite occurs. The retained austenite stabilization is performed in an annealing device by diffusion-based carbon partitioning within the material from which the hollow body is made. The hollow body is cooled in a cooling device to ambient temperature after stabilization.
    Type: Application
    Filed: February 1, 2012
    Publication date: November 1, 2012
    Inventors: Bohuslav Masek, Hana Jirková, Pavel Hronek, Ctibor Stádler, Miroslav Urbánek