Patents by Inventor Ulf Kirsten

Ulf Kirsten 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).

  • Direct drill bit drive for tools on the basis of a heat engine
    Patent number: 9328559
    Abstract: In a direct drill bit drive for tools for comminuting brittle materials and penetrating into brittle materials by percussive impact on the basis of a heat engine operated with a gaseous working medium, the heat engine is a hot gas engine operating in accordance with a real Stirling cycle process.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: May 3, 2016
    Inventors: Marcus Schwarz, Ulf Kirsten, Matthias Reich, Silke Röntzsch, Florian Mertens
  • DIRECT DRILL BIT DRIVE FOR TOOLS ON THE BASIS OF A HEAT ENGINE
    Publication number: 20130220656
    Abstract: In a direct drill bit drive for tools for comminuting brittle materials and penetrating into brittle materials by percussive impact on the basis of a heat engine operated with a gaseous working medium, the heat engine is a hot gas engine operating in accordance with a real Stirling cycle process.
    Type: Application
    Filed: October 21, 2011
    Publication date: August 29, 2013
    Inventors: Marcus Schwarz, Ulf Kirsten, Matthias Reich, Silke Röntzsch, Florian Mertens