Patents by Inventor Steven Allen Stringfellow

Steven Allen Stringfellow 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).

  • Patent number: 5997161
    Abstract: An instrument cluster assembly includes a light source for emitting black light and an instrument cluster display including at least one graphic feature that is illuminable by black light. The invisible black light illuminates only the graphic features when contacted by the black light from the light source without illuminating the surrounding portions of the instrument cluster display. Preferably, the light source includes first and second light sources positioned on opposite sides of the instrument cluster display. The light sources are each a single bulb for emitting ultraviolet light. The light sources are positioned between reflectors and the instrument cluster display such that the reflectors are positioned for redirecting black light initially emitted towards the reflector onto the instrument cluster display. The graphic features are preferably made of a phosphoric material.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: December 7, 1999
    Assignee: General Motors Corporation
    Inventors: Steven Allen Stringfellow, Peter L. Kalajian