Optical: systems and elements – Signal reflector – 3-corner retroreflective
Reexamination Certificate
2011-05-10
2011-05-10
Phan, James (Department: 2872)
Optical: systems and elements
Signal reflector
3-corner retroreflective
C428S167000
Reexamination Certificate
active
07938549
ABSTRACT:
A retroreflective article with excellent wide-angle characteristics is provided. Entrance angle characteristics, observation angle characteristics, and rotation angle characteristics are improved. In a retroreflective article, an assembly of multidirectional retroreflective elements is formed, in which either five, or seven or more unit elements are formed so as to share two common base edges forming the triangular base face of the unit elements and a common vertex at which the common base edges intersect, with an adjacent retroreflective element.
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Fitzpatrick ,Cella, Harper & Scinto
Nippon Carbide Industries Co., Inc.
Phan James
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