Title of Invention | RAISED PAVEMENT MARKER WITH IMPROVED LENS |
---|---|
Abstract | The present disclosure relates to improved raised pavement markers having a totally-internal-reflective lens. The disclosure also relates to methods of manufacturing the raised pavement marker. The raised pavement markers described below comprise a housing connected to a totally-internal-reflective lens. The totally- internal-reflective lens comprises a retroreflective element having a smooth surface generally opposite a plurality of cube comer elements. A film is attached to the retroreflective element at the apexes of the cube comer elements to form spaces, i.e., an air gap, between the film and the cubes. The film and retroreflective element cooperate to form the totally-internal-reflective lens. Light entering the retroreflective element through the smooth surface is retroreflected at the cube/air interface. Methods of manufacturing include, for example, forming a shell with the retroreflective element and attaching the film to the apexes of the cube comer elements. |
Full Text |
---|
in-pct-2002-1324-che abstract.pdf
in-pct-2002-1324-che claims.pdf
in-pct-2002-1324-che correspondence others.pdf
in-pct-2002-1324-che description (complete).pdf
in-pct-2002-1324-che drawings.pdf
in-pct-2002-1324-che form 1.pdf
in-pct-2002-1324-che form 18.pdf
in-pct-2002-1324-che form 3.pdf
in-pct-2002-1324-che form 5.pdf
in-pct-2002-1324-che petition.pdf
Patent Number | 216603 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Indian Patent Application Number | IN/PCT/2002/1324/CHE | ||||||||||||
PG Journal Number | 17/2008 | ||||||||||||
Publication Date | 25-Apr-2008 | ||||||||||||
Grant Date | 17-Mar-2008 | ||||||||||||
Date of Filing | 22-Aug-2002 | ||||||||||||
Name of Patentee | 3M INNOVATIVE PROPERTIES COMPANY | ||||||||||||
Applicant Address | 3M Center P.O. Box 33427 Saint Paul, Minnesota 55133-3427, | ||||||||||||
Inventors:
|
|||||||||||||
PCT International Classification Number | E01F 9/06 | ||||||||||||
PCT International Application Number | PCT/US2001/005647 | ||||||||||||
PCT International Filing date | 2001-02-21 | ||||||||||||
PCT Conventions:
|