Internally illuminated sign
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 12, 1999
Grant Date -
N/A
app pub date -
Mar 3, 1997
filing date -
Mar 3, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An emergency sign includes a body having a top, two spaced apart sides, and a bottom defining a cavity, a front cover having an inside surface and cut out portions extending through the cover forming indica, a light source disposed within the cavity, and a diffuser coupled to the cover and covering the indicia, the diffuser having cut away portions for permitting light from the light source to reflect off of the inside surface of the front cover. The diffuser may include pigment therein, which pigment is color matched to correspond to the wavelength of the light from the light source. The light source may include an array of LEDs where some of the LEDs are of a diffused type and some of the LEDs are of a unidirectional type.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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