Portable electro-mechanical signal system
US8164483B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jul 18, 2011 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Jul 18, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F9/681
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A portable signal system for use by crossing guards, roadway construction flaggers and the like. The signal system is positioned in or alongside a roadway and remotely controllable progressively from an idle or stop mode through a warning stage and ultimately to a traffic stop mode as the signal system frontal profile greatly expands in the face of oncoming motorists. In a warning stage, the signal system presents a flashing amber light array. Following an initial warning period, articulated arms journalled on said signal system and carrying stop signal signs including red lights are swiveled outwardly to stop mode confronting motorists in oncoming traffic. A motor driven gear disk operates through pivoted drive links to control laterally outward and inward movement of the articulated arms carrying the stop signs. The system may be manually moved by handles on wheels to its operational location and anchored in place.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.