Patents by Inventor Rupert Fehr

Rupert Fehr 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 and apparatus for contactless optical measurement of the thickness of a hot glass body by optical dispersion
    Patent number: 7414740
    Abstract: The method measures the thickness of a hot glass body without direct contact with the glass body and is based on chromatic aberration. This method includes focusing a light beam from a light source on the hot glass body using a focusing device immediately after formation; conducting reflected light from the glass body into a spectrometer to obtain a reflected light spectrum; finding two wavelengths of the reflected light from the front side and the rear side of the glass body respectively at which reflected light intensities are maximum; determining the thickness of the glass body from the difference between the two wavelengths; maintaining the focusing device at a temperature below 120° C. during the measuring of the thickness and substantially preventing heat radiation from reaching the focusing device using at least one heat-blocking filter.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: August 19, 2008
    Assignee: Schott AG
    Inventors: Thorsten Wilke, Andre Witzmann, Rupert Fehr, Johann Faderl, Otmar Schmittel, Ernst-Walter Schaefer, Christopher Fritsch
  • Method and apparatus for contactless optical measurement of the thickness of a hot glass body by optical dispersion
    Publication number: 20060012804
    Abstract: The method measures the thickness of a hot glass body without direct contact with the glass body and is based on chromatic aberration. This method includes focusing a light beam from a light source on the hot glass body using a focusing device immediately after formation; conducting reflected light from the glass body into a spectrometer to obtain a reflected light spectrum; finding two wavelengths of the reflected light from the front side and the rear side of the glass body respectively at which reflected light intensities are maximum; determining the thickness of the glass body from the difference between the two wavelengths; maintaining the focusing device at a temperature below 120° C. during the measuring of the thickness and substantially preventing heat radiation from reaching the focusing device using at least one heat-blocking filter.
    Type: Application
    Filed: July 13, 2005
    Publication date: January 19, 2006
    Inventors: Thorsten Wilke, Andre Witzmann, Rupert Fehr, Johann Faderl, Otmar Schmittel, Ernst-Walter Schaefer, Christopher Fritsch
  • Method and device for cutting glass tubes
    Publication number: 20040025539
    Abstract: The invention relates to a method for cutting glass tubes, characterised by the following steps: a glass strand is drawn; a heating device is driven synchronously with the glass strand and is directed towards the region of a desired separation point; the glass strand is drawn in the region of the desired separation point; a separation device is driven synchronously with the glass strand; the separation device is actuated in such a way that it severs the glass strand at the desired separation point.
    Type: Application
    Filed: August 19, 2003
    Publication date: February 12, 2004
    Inventors: Erich Fischer, Alexander Hummer, Volker Trinks, Rupert Fehr, Alfons Wolfrum, Markus Reindl, Gottfried Haas, Andre Witzmann, Ulla Trinks, Hubertus Kramer, Klaus Rustler