Lane marker
US5592898A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 10, 1995 |
| Grant date | Jan 14, 1997 |
| Priority date | — |
| Expiry date | Feb 10, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F9/688
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A lane marker includes a base, an illuminator, and a frangible bracket resably holding the illuminator in the lowered position on the base. A cantilever embedded in the bracket extends therefrom along the illuminator and is stronger than the bracket. The marker also includes a vertically expandable spring whose coils are compressed in a planar array against the base, one section of the spring biasing the illuminator to swing up from the lowered position. A keeper section of the spring connects to the illuminator and bears on the coils to keep them compressed against the base. An end of the keeper section latches to the base until the frangible bracket is broken. When the bracket breaks, the spring swings up the keeper section along with the illuminator so as to free the keeper section's end from the base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.