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US 8,262,237 B2Granted
Retroreflective sheeting including cube corner elements
Assignee3M Innovative Properties Company
InventorKenneth L. Smith
Life of this patent
Estimating the term…
Abstract
The present disclosure is directed to lamina(e) comprising cube corner elements, a tool comprising an assembly of laminae and replicas thereof. The disclosure further relates to retroreflective sheeting.
Claims13
Retroreflective sheeting, comprising:
- multiple full cubes that each include a first groove surface, a second groove surface, and a primary groove face;
- where in the multiple full cubes further include a first angle formed by the intersection of the first groove surface and the primary groove face, a second angle formed by the intersection of the second groove surface and the primary groove face, and a third angle formed by the intersection of the first groove surface and the second groove surface;
- wherein the first and second angles are nonorthogonal and wherein the nonorthogonality is greater than nominally orthogonal and less than nonorthogonal by 1 degree;
- and
- wherein one of the first and second angles is less than 90° and the other of the first and second angles is greater than 90°.
2 more elements
Retroreflective sheeting, comprising:
- multiple full cubes that each include a first groove surface, a second groove surface, and a primary groove face;
- where in the multiple full cubes further include a first angle formed by the intersection of the first groove surface and the primary groove face, a second angle formed by the intersection of the second groove surface and the primary groove face, and a third angle formed by the intersection of the first groove surface and the second groove surface;
- wherein the first and second angles are nonorthogonal and wherein the nonorthogonality is greater than nominally orthogonal and less than nonorthogonal by 1 degree;
- and
- wherein the absolute value of the nonorthogonality of the first angle differs from the absolute value of the nonorthogonality of the second angle.
2 more elements
Dependencies are inferred from the claim text.