Patents by Inventor Brian J. Randall

Brian J. Randall 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).

  • Display sign adapted to be backlit by widely spaced light emitting diodes
    Patent number: 7748148
    Abstract: A backlit display sign includes a rear sign enclosure element at the back of the sign with a forwardly facing wide mouth opening. Extending across the mouth opening is a front sign element or cover formed from an optically transmissive light guide which extends laterally across the mouth opening of the display. Light diffusing (scattering) reflective layers on the front and rear surfaces of the guide or within the guide itself make the guide a light propagation sustaining channel that serves to funnel light rays laterally and forwardly within itself to an image-producing opening where the light is allowed to be emitted for producing the image of a symbol, letter, number or other indicia that is visible on the front of the display. A light cavity between the front cover and the rear sign enclosure element contains at least one illuminating device, e.g. a light emitting diode (LED), to provide visible illumination that is transmitted from within the light cavity through the guide to the front of the sign.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: July 6, 2010
    Assignee: e-llumineering LLC
    Inventors: Dennis J. Reiland, Donald L. Robertson, Brian J. Randall
  • Display sign adapted to be backlit by widely spaced light emitting diodes
    Publication number: 20090056183
    Abstract: A backlit display sign includes a rear sign enclosure element at the back of the sign with a forwardly facing wide mouth opening. Extending across the mouth opening is a front sign element or cover formed from an optically transmissive light guide which extends laterally across the mouth opening of the display. Light diffusing (scattering) reflective layers on the front and rear surfaces of the guide or within the guide itself make the guide a light propagation sustaining channel that serves to funnel light rays laterally and forwardly within itself to an image-producing opening where the light is allowed to be emitted for producing the image of a symbol, letter, number or other indicia that is visible on the front of the display. A light cavity between the front cover and the rear sign enclosure element contains at least one illuminating device, e.g. a light emitting diode (LED), to provide visible illumination that is transmitted from within the light cavity through the guide to the front of the sign.
    Type: Application
    Filed: August 27, 2007
    Publication date: March 5, 2009
    Inventors: Dennis J. Reiland, Donald L. Robertson, Brian J. Randall