Patents by Inventor Bernd WOELFER

Bernd WOELFER 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).

  • Cooled tool for hot-forming and/or press-hardening of a sheet metal material and method for producing a cooling device for this tool
    Patent number: 10081047
    Abstract: The invention relates to a tool for hot-tanning and/or press hardening of a sheet metal material, this tool having a plurality of cooling devices through which a coolant can flow, in order thus to be able to actively cool at least regions of the effective tool surfaces which come into contact with the sheet metal material. According to the invention, at least one cooling device comprises a shell element having an effective tool surface, wherein this shell element has, on its rear side facing away from the effective tool surface, a plurality of separate cooling chambers, through which a coolant can flow, and arranged in each of these cooling chambers is at least one flow guiding element for the coolant. The invention also relates to a method for producing such a cooling device for this tool.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: September 25, 2018
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Bernhard Glueck, Bernd Woelfer
  • Cooled Tool for Hot-Forming and/or Press-Hardening of a Sheet Metal Material and Method for Producing a Cooling Device for This Tool
    Publication number: 20150107325
    Abstract: The invention relates to a tool for hot-tanning and/or press hardening of a sheet metal material, this tool having a plurality of cooling devices through which a coolant can flow, in order thus to be able to actively cool at least regions of the effective tool surfaces which come into contact with the sheet metal material. According to the invention, at least one cooling device comprises a shell element having an effective tool surface, wherein this shell element has, on its rear side facing away from the effective tool surface, a plurality of separate cooling chambers, through which a coolant can flow, and arranged in each of these cooling chambers is at least one flow guiding element for the coolant. The invention also relates to a method for producing such a cooling device for this tool.
    Type: Application
    Filed: December 23, 2014
    Publication date: April 23, 2015
    Inventors: Bernhard GLUECK, Bernd WOELFER