Highway marker
US4818138A · kind A · utility
Inventor
Key dates
| Filing date | Dec 22, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Dec 22, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F9/50
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A highway marker for attachment to a roadbed to signal the location of a lane extending longitudinally of the roadbed and to signal the proper direction of movement in a traffic lane while defining the boundaries of the traffic lane. The marker has a bottom surface for attachment to a roadbed, a base and adjacent sides are perpendicularly arranged to the base and describe the boundaries of a triangle. A triangular floor in the form of a triangle has a base coincident with the perpendicular base and sides spaced inwardly from the perpendicular sides with there being a peeked boundary formed between the perpendicular adjacent sides and the adjacent sides of the floor. A reflective surface on the perpendicular adjacent sides form an arrow indicating a direction of travel while another reflective surface on the floor indicates an opposite direction of travel respective to the first arrow and can be of various colors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.