초록 ▼

An improved retro-reflective beaded roadway marker strip and the like, formed of successive spaced segmented wedges as rows of trapezoidal blocks containing retro-reflective beads at least on their inclined front, side and rear surfaces and with the blocks of successive rows staggered; the strip bei

An improved retro-reflective beaded roadway marker strip and the like, formed of successive spaced segmented wedges as rows of trapezoidal blocks containing retro-reflective beads at least on their inclined front, side and rear surfaces and with the blocks of successive rows staggered; the strip being preferably formed of a bottom rubber-like non-memory surface and an upper crosslinked elastomeric self-restoring surface.

대표청구항 ▼

For use with a roadway surface and the like, a direction-indicating surface marker strip comprising a bottom rubber-like substantially non-memory surface for adhering to the roadway and an upper crosslinked elastomeric self-restoring surface, said upper surface of said strip being intermittently def

For use with a roadway surface and the like, a direction-indicating surface marker strip comprising a bottom rubber-like substantially non-memory surface for adhering to the roadway and an upper crosslinked elastomeric self-restoring surface, said upper surface of said strip being intermittently deformed upward to provide successive longitudinally spaced wedges of substantially trapezoidal shape in longitudinal vertical section, and each interrupted or segmented transversely to divide the wedge into a plurality of similar blocks of substantially trapezoidal shape in longitudinal vertical section, each block of each wedge having a substantially horizontal top surface bounded by inclined front, rear and side surfaces and of substantially rectangular perimeter with the area substantially greater than the area of each of the inclined surfaces, the rectangle being longer in the longitudinal direction to minimize the effect of shadowing and providing maximum light visibility in daylight, the blocks of each wedge being staggered transversely from the blocks of adjacent wedges, with the corresponding blocks of alternate wedges being separated by substantially horizontal surfaces of longitudinal extent more than twice the longitudinal dimension of said block top surface, each of the front, rear and side inclined block surfaces carrying a layer of exposed retro-reflective beads, the retro-reflection from inclined front, rear and side surfaces of the blocks providing substantially omni-directional retro-reflection to incident light and the intermediate wedges between alternate wedges limiting snowplow digging and the like, while enabling the blocks of alternate wedges to be sufficiently longitudinally spaced to prevent obscuring of the strip by shadows of the wedges.