US2007237578A1PendingUtilityA1
Flexible sleeve
Assignee: 3M INNOVATIVE PROPERTIES COPriority: Mar 31, 2006Filed: Mar 31, 2006Published: Oct 11, 2007
Est. expiryMar 31, 2026(expired)· nominal 20-yr term from priority
Inventors:William Weller Boyd
E01F 9/553E01F 9/608E01F 9/688E01F 9/654
43
PatentIndex Score
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Claims
Abstract
The invention relates to a flexible sleeve for application to a support such as a cone and a method of making a flexible sleeve.
Claims
exact text as granted — not AI-modified1 . A method of refurbishing traffic devices comprising providing a retroreflective sleeve on a traffic device wherein the traffic device no longer meets a color standard or reflectivity standard, the sleeve comprising a flexible substrate having a viewing surface and a non-viewing surface and at least one retroreflective band bonded to a flexible substrate wherein a portion of the flexible substrate is exposed on the viewing surface.
2 . The method of claim 1 wherein the flexible substrate is non-retroreflective.
3 . The method of claim 1 wherein the retroreflective band is at least as flexible as the flexible substrate.
4 . The method of claim 1 wherein the band has an elongation at break of at least 100% using test method ASTM D 882 with a crosshead speed of 20 inches per minute.
5 . The method of claim 1 wherein the band has an elongation at break of at least 200% using test method ASTM D 882 with a crosshead speed of 20 inches per minute.
6 . The method of claim 1 wherein the band has an elongation at break of at least 300% using test method ASTM D 882 with a crosshead speed of 20 inches per minute.
7 . The method of claim 1 wherein the retroreflective band consists essentially of microspheres at least partially embedded in a binder layer and specular or diffuse reflecting material.
8 . The method of claim 7 wherein the retroreflective band is substantially free of backing prior to being bonded to the flexible substrate.
9 . The method of claim 7 wherein the retroreflective band is bonded with an adhesive.
10 . The method of claim 9 wherein the adhesive is heat activated.
11 . The method of claim 1 wherein the sleeve has a conical shape or cylindrical shape.
12 . The method of claim 1 wherein the traffic device is selected from the group consisting of cones, drums, tubes, stakes, posts, coils, sign supports, and traffic signs.
13 . The method of claim 1 wherein the traffic device has a viewing surface and the sleeve covers a portion of the viewing surface of the traffic device.
14 . The method of claim 1 wherein the traffic device has a viewing surface and the sleeve covers substantially the entire viewing surface of the traffic device.
15 . The method of claim 1 wherein the support is a color and the flexible substrate is the same color as the support.
16 . The method of claim 1 wherein the flexible substrate is a conspicuous color.
17 . The method of claim 16 wherein the substrate is a fluorescent color.Join the waitlist — get patent alerts
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