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US 2005/0198879 A1Published application
Emergency information sign
AssigneeAvery Dennison Corporation
InventorMichael Hannington
Life of this patent
Estimating the term…
Abstract
An emergency information sign (10) comprising a base substrate (12) and an indicia layer (14) positioned over the base substrate (12). Exposed areas (24) of the base substrate (12) and covering areas (26) of the indicia layer (14) together form emergency information indicia. The base substrate (12) and the indicia layer (14) each carry phosphorescent materials (20, 22), which absorb and store light from a primary light source (16/18) and emit this stored light during dark conditions.
Claims21
An emergency information sign comprising a base substrate and an indicia layer positioned over the base substrate;
- wherein the base substrate has areas which are exposed and the indicia layer has areas which cover the base substrate, these areas together forming emergency information indicia;
- and
- wherein the base substrate and the indicia layer each carry phosphorescent materials which absorb and store light from a primary light source and emit this stored light during dark conditions.
Dependencies are inferred from the claim text.