Reusable trailer mounted attenuator
US7931317B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Mar 11, 2008 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Mar 30, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F15/148
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A reusable trailer mounted attenuator with a collapsible scissor frame assembly supported by front, intermediate and rear vertical frames. A self-adjusting shock absorber with staged metering is attached to the scissor frame assembly and controls its collapse under impact in a manner that deceleration of an impacting vehicle does not exceed permitted rates irrespective of the weight and speed of the impacting vehicle within the design range. Guides are provided to permit the scissor frame assembly to collapse without twisting and a replaceable strike plate with vertical fins concealed with a cover plate is attached to the rear vertical frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.