Omnidirectional retro-reflective roadway marker and the like
First Claim
Patent Images
1. A retro-reflective roadway marker strip having, in combination, a first plurality of transversely extending parallel rows of transversely uniformly spaced transversely oriented blocks protruding upwardly of the strip, and with successive of the parallel rows uniformly longitudinally spaced and transversely staggered with respect to one another;
- a second plurality of transversely extending parallel rows of transversely uniformly spaced longitudinally oriented blocks similarly protruding upwardly of the strip, and with successive of the parallel rows thereof uniformly longitudinally spaced and transversely staggered with respect to one another;
the first and second pluralities of rows being uniformly transversely and longitudinally interleaved, with the longitudinally oriented blocks symmetrically positioned in the transverse spaces between adjacent transversely oriented blocks of each row, and the transversely oriented blocks symmetrically positioned in the longitudinal spaces between adjacent longitudinally oriented blocks, and similar edge faces of the blocks of each of the pluralities of rows being provided with retro-reflective beads.
16 Assignments
0 Petitions
Accused Products
Abstract
A novel roadway or similar marker strip having preferably retro-reflective-beaded protuberances in a critical "herringbone"-like pattern that provides a surprising degree of azimuthal uniform omindirectionality of light reflected from the strip.
22 Citations
13 Claims
-
1. A retro-reflective roadway marker strip having, in combination, a first plurality of transversely extending parallel rows of transversely uniformly spaced transversely oriented blocks protruding upwardly of the strip, and with successive of the parallel rows uniformly longitudinally spaced and transversely staggered with respect to one another;
- a second plurality of transversely extending parallel rows of transversely uniformly spaced longitudinally oriented blocks similarly protruding upwardly of the strip, and with successive of the parallel rows thereof uniformly longitudinally spaced and transversely staggered with respect to one another;
the first and second pluralities of rows being uniformly transversely and longitudinally interleaved, with the longitudinally oriented blocks symmetrically positioned in the transverse spaces between adjacent transversely oriented blocks of each row, and the transversely oriented blocks symmetrically positioned in the longitudinal spaces between adjacent longitudinally oriented blocks, and similar edge faces of the blocks of each of the pluralities of rows being provided with retro-reflective beads. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- a second plurality of transversely extending parallel rows of transversely uniformly spaced longitudinally oriented blocks similarly protruding upwardly of the strip, and with successive of the parallel rows thereof uniformly longitudinally spaced and transversely staggered with respect to one another;
-
12. A reflective roadway marker strip having, in combination, a first plurality of transversely extending parallel rows of uniformly spaced transversely oriented blocks protruding upwardly of the strip, and with successive of the parallel rows uniformly longitudinally spaced and transversely staggered with respect to one another;
- a second plurality of transversely extending parallel rows of transversely extending parallel rows of transversely uniformly spaced longitudinally oriented blocks similarly protruding upwardly of the strip, and with successive of the parallel rows thereof uniformly longitudinally spaced and transversely staggered with respect to one another;
the first and second pluralities of rows being uniformly transversely and longitudinally interleaved, with the longitudinally oriented blocks symmetrically positioned in the transverse spaces between adjacent transversely oriented blocks of each row, and the transversely oriented blocks symmetrically positioned in the longitudinal spaces between adjacent transversely oriented blocks; and
similar edge faces of the blocks of each of the pluralities of rows serving as reflective surfaces to light incident upon the strip at low angles of incidence to the roadway and from all directions about the strip. - View Dependent Claims (13)
- a second plurality of transversely extending parallel rows of transversely extending parallel rows of transversely uniformly spaced longitudinally oriented blocks similarly protruding upwardly of the strip, and with successive of the parallel rows thereof uniformly longitudinally spaced and transversely staggered with respect to one another;
Specification