Patents by Inventor Gerhard Sell

Gerhard Sell 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).

  • Illuminated pointer instrument
    Patent number: 5084698
    Abstract: In an indicator instrument, at least one light-emitting diode (8, 9) which lights up in different colors depending on the manner in which it is controlled is provided in a light guide (5). In this way, the pointer instrument can be illuminated in simple fashion in different colors, for instance as a function of the position of the pointer.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: January 28, 1992
    Assignee: VDO Adolf Schindling AG
    Inventor: Gerhard Sell
  • Pointer illuminated instrument
    Patent number: 5047761
    Abstract: In a pointer instrument, a light guide (3) serves as support for electronic components (7). The light guide (3) therefore assumes the function of a printed circuit board. The electronic components (7) are preferably arranged on the outer wall surface (6) of the light guide (3) which is developed in the shape of a conical frustum so that space which is in any event present in the housing can be used for them. The light guide serves to illuminate a dial of the instrument.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: September 10, 1991
    Assignee: VDO Adolf Schindling AG
    Inventor: Gerhard Sell
  • Display device
    Patent number: 4621306
    Abstract: The present invention relates to a display device having a transparent display field through which ambient light can pass from the side facing away from an observer to the side facing the observer. Characters and/or symbols can be presented against a light background on the display field. On the side facing the observer, the display field has a light-guide plate 9 of transparent material in which light-dispensing particles 19 are distributed and into which the light from a source of light 12 can be introduced.
    Type: Grant
    Filed: April 4, 1985
    Date of Patent: November 4, 1986
    Assignee: VDO Adolf Schindling AG
    Inventor: Gerhard Sell