Methods and apparatus for quickly erecting a vehicle barrier across a roadway
US4824282A · kind A · utility
51Cited by
17References
14Claims
0Family size
Inventor
Key dates
| Filing date | Nov 6, 1987 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Nov 6, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F13/046
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A barrier system is provided for blocking a roadway to prevent passage of a vehicle. The barrier system comprises a series of inflatable bags connected to a flexible net, and energy dissipating units connected to ends of the net. The system is normally located in a subterranean chamber when deactivated. When activated, the air bags are inflated and rise above the ground surface while pulling the net upwardly therewith. A vehicle which impacts the barrier is rapidly decelerated under the energy dissipating action of the air bags, energy dissipating units, and net.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.