Omnidirectional retro-reflective roadway marker and the like
US5557461A · kind A · utility
16Cited by
5References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 26, 1995 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | May 26, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.