Hinged vehicle gate arm
US4531325A · kind A · utility
18Cited by
4References
8Claims
0Family size
Inventor
Key dates
| Filing date | May 7, 1984 |
| Grant date | Jul 30, 1985 |
| Priority date | — |
| Expiry date | May 7, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F13/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hinged vehicle gate arm is mounted for automatic traffic control on a gate operating mechanism. The arm includes a first section mounted to the gate operating mechanism and a second section attached to the first section by a hinge assembly for pivotal deflection of the second section upwardly of the first section. A resilient roller is mounted for longitudinal rotation below and substantially the length of the second section. The resilient roller and hinged section section limit damage to a vehicle contacted by the arm lowered by the gate operating device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.