Energy absorbing breakaway steel guardrail post
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United States of America Patent
Stats
-
Jul 3, 2001
Grant Date -
N/A
app pub date -
Aug 23, 1999
filing date -
Nov 4, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An improved breakaway steel guardrail post for use in dissipation of impact energy upon impact of the post having an upper post member and a lower post member, a connecting joint, and a mechanism connected to the upper and lower post members for controlling the energy dissipation of the guardrail post about the connecting joint at a predetermined rate. A first embodiment utilizes a cable restraint lopped through openings in the guardrail posts. Other embodiments included straps and fasteners designed to distort or fail at predetermined rates or strengths and combinations thereof.
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