Yielding post guardrail safety system incorporating thrie beam guardrail elements
US8500103B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2007 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Oct 12, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F15/0423
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A guardrail safety system includes a guardrail beam operable to contain and redirect an errant vehicle to prevent the vehicle from leaving a roadway. At least a portion of the guardrail beam includes a thrie beam. A support post is coupled to the guardrail beam and includes a lower portion, a mid portion, and an upper portion. The lower portion is installed below grade adjacent the roadway. The mid portion lies substantially adjacent the grade and is weakened about a first axis without being substantially weakened about a second axis that is generally perpendicular to the first axis. An upper portion is releasably coupled to the guardrail beam such that the upper portion is uncoupled from the guardrail beam when the mid portion yields about the first axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.