Optical: systems and elements – Signal reflector – Including a curved refracting surface
Reexamination Certificate
2010-01-27
2010-10-19
Allen, Stephone B (Department: 2872)
Optical: systems and elements
Signal reflector
Including a curved refracting surface
C359S530000, C428S167000
Reexamination Certificate
active
07815319
ABSTRACT:
To provide a retroreflective article formed of many triangular-pyramidal cube-corner retroreflective element pairs. One-side groove angle formed between a cross line between a plane vertical to the common plane and to a V-groove vertical plane which includes the base line of a V-shaped groove is vertical to the common plane, and a reflective lateral face containing the base line of the v-shaped groove, and the V-groove vertical plane, does not form a constant angle in the reflective lateral face but the lateral face forms a curved and/or multiple surface. A base line constituting any directional V-shaped groove in retroreflective element pairs is a nonlinear base line which does not form a linear trajectory and the reflective lateral face formed of the V-shaped groove forms a curved and/or multiple surface.
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Allen Stephone B
Doak Jennifer L
Fitzpatrick ,Cella, Harper & Scinto
Nippon Carbide Kogyo Kabushiki Kaisha
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