Gate release mechanism having a pivotable arm to facilitate maintenance
US6672008B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2001 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Jul 5, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F13/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A railroad gate release mechanism which attaches between the mount arms of a railroad gate actuator and a crossing arm to prevent breakage of the crossing arm due to impingement by a vehicle. The railroad gate release mechanism includes a pivotable arm assembly which allows released movement in two directions of the crossing arm in reaction to impingement and returns the crossing arm to the original and detented position subsequent to impingement to maintain grade crossing protection. An alternative embodiment includes a pair of swing plates and an elongated arm to which is attached a crossing arm, the elongated arm with the attached crossing arm is pivoted to the pair of swing plates in such manner that the elongated arm and attached crossing arm can be pivoted aside without moving the swing plates for crossing arm maintenance without impeding vehicular traffic flow across the grade crossing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.