Lamina comprising cube corner elements and retroreflective sheeting
First Claim
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1. A lamina comprising cube corner elements having faces formed from grooves wherein adjacent grooves range from being nominally parallel to nonparallel by less than 1°
- , have included angles that differ by at least 2°
, and the included angles of the grooves are arranged in a repeating pattern.
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Abstract
The present invention is directed to lamina(e) comprising cube corner elements, a tool comprising an assembly of laminae and replicas thereof. The invention further relates to retroreflective sheeting.
80 Citations
29 Claims
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1. A lamina comprising cube corner elements having faces formed from grooves wherein adjacent grooves range from being nominally parallel to nonparallel by less than 1°
- , have included angles that differ by at least 2°
, and the included angles of the grooves are arranged in a repeating pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- , have included angles that differ by at least 2°
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11. A lamina comprising cube corner elements having faces formed from grooves wherein the faces intersect at a common peak height, adjacent grooves range from being nominally parallel to nonparallel by less than 1°
- and the included angles of adjacent grooves differ by at least 2°
. - View Dependent Claims (12, 15, 16)
- and the included angles of adjacent grooves differ by at least 2°
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13. A lamina comprising cube corner elements having faces formed from grooves wherein adjacent grooves range from being nominally parallel to nonparallel by less than 1°
- , have included angles that differ by at least 2° and
have bisector planes that range from being mutually nominally parallel to nonparallel by less than 1°
. - View Dependent Claims (14, 17, 18, 19)
- , have included angles that differ by at least 2° and
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20. Retroreflective sheeting comprising a row of preferred geometry cube corner microstructures having faces defined by grooves wherein adjacent grooves in the row range from being nominally parallel to nonparallel by less than 1°
- , have included angles that differ by at least 2°
, and the included angles of the side grooves are arranged in a repeating pattern. - View Dependent Claims (21, 22, 23)
- , have included angles that differ by at least 2°
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24. Retroreflective sheeting comprising a row of cube corner elements having faces defined by grooves wherein the faces intersect at a common peak height, adjacent grooves in the row range from being nominally parallel to nonparallel by less than 1°
- and the included angles of adjacent side grooves differ by at least 2°
. - View Dependent Claims (25, 26)
- and the included angles of adjacent side grooves differ by at least 2°
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27. Retroreflective sheeting comprising a row of cube corner elements having faces defined by grooves wherein adjacent grooves in the row range from being nominally parallel to nonparallel by less than 1°
- , have included angles that differ by at least 2° and
have bisector planes that range from being mutually nominally parallel to nonparallel by less than 1°
. - View Dependent Claims (28, 29)
- , have included angles that differ by at least 2° and
Specification