Railroad crossing gate
US4897960A · kind A · utility
39Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1989 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Jan 3, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L29/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved crossing gate for railroad grade crossings. The gate is constructed of an impact-resistant material, and the crossing arm is mounted so that it will swing out of the way and return to its original position if struck by a moving vehicle from either direction. The crossing arm also contains protected lighting that will withstand impact, and provision is made to permit easy replacement of burned-out light bulbs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.