Device and method for applying night-visible road markings
US6227454A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1999 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Jul 14, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C23/243
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device for applying night-visible road markings includes a material hopper, a floor gate, a pair of side runners and a plurality of vertically oriented shutters. When the floor gate is moved away from an outlet extending through a bottom side of the hopper, marking material flows from the hopper, through the outlet and onto the surface of a road. The vertically oriented shutters are positioned between the side runners, which serve as side forms for marking material dispensed onto the road surface, and rearwardly of the hopper outlet. The distance between the bottom edges of the shutters and the road surface determines the amount of marking material that passes thereunder, thereby determining the thickness of the road marking. By positioning the shutters at different relative elevations, road markings of various patterns including markings having varying thicknesses across their width can be produced for increased reflectivity of the road markings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.