Patents by Inventor Georg Ewald

Georg Ewald 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).

  • Illumination and display device
    Patent number: 7126564
    Abstract: An illumination device for a display instrument is described which is used to illuminate two sets of scale markings and to separately illuminate a pointer scale of the display instrument. The light from a light source is guided past light funnels that are used to illuminate the pointer scale by an optical waveguide. This provides an efficient and economical means of illuminating a display instrument of this type.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: October 24, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Harald Schach, Georg Ewald
  • Backlighting device including lens
    Patent number: 6957901
    Abstract: A lighting device for lighting a display surface is provided. The lighting device includes a light source, a lighting well and a lens, which is arranged between the light source and the display surface. Due to the combined use of the lighting well and the lens, light scattered laterally is also reflected in the direction of the display surface.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: October 25, 2005
    Assignee: Robert Bosch GmbH
    Inventors: Harald Schach, Pascal Benoit, Matthias Gebauer, Georg Ewald
  • Illumination device
    Publication number: 20030161137
    Abstract: A lighting device for lighting a display surface is described. The lighting device includes a light source, a lighting well and a lens, which is situated between the light source and the display surface. This yields a homogeneous and efficient lighting of a display surface.
    Type: Application
    Filed: April 11, 2003
    Publication date: August 28, 2003
    Inventors: Harald Schach, Pascal Benoit, Matthias Gebauer, Georg Ewald
  • Illumination and display device
    Publication number: 20020149495
    Abstract: An illumination device for a display instrument is described which is used to illuminate two sets of scale markings and to separately illuminate a pointer scale of the display instrument. The light from a light source is guided past light funnels that are used to illuminate the pointer scale by an optical waveguide. This provides an efficient and economical means of illuminating a display instrument of this type.
    Type: Application
    Filed: May 17, 2002
    Publication date: October 17, 2002
    Inventors: Harald Schach, Georg Ewald