|
2018
|
Invention
|
Breakaway guardrail post for a highway crash attenuation system. A highway crash attenuation syst... |
|
2017
|
Invention
|
Energy absorbing guardrail system. A highway crash attenuation system having W-beam rail elements... |
|
2014
|
Invention
|
Improved energy absorbing guardrail system. A highway crash attenuation system having W-beam rail... |
|
2010
|
Invention
|
Energy absorbing post for roadside safety devices.
An energy-absorbing post for absorbing the im... |
|
2000
|
Invention
|
Energy absorbing breakaway steel guardrail post. A improved breakaway steel guardrail post... |
|
1999
|
Invention
|
Energy absorbing breakaway steel guardrail post. An improved breakaway steel guardrail post for u... |
|
|
Invention
|
Breakaway steel guardrail post. A breakaway guardrail post includes upper and lower post se... |
|
|
Invention
|
Controlled buckling breakaway cable terminal. A crash attenuation apparatus for use with a guardr... |
|
1998
|
Invention
|
Breakaway steel guardrail post. A breakaway guardrail post includes upper and lower post sections... |
|
|
Invention
|
Anchor cable release mechanism for a guardrail system. A highway guardrail terminal system having... |
|
|
Invention
|
Foundation sleeve for a guardrail system. A highway guardrail terminal system having horizontally... |
|
|
Invention
|
Sequential kinking guardrail terminal system. A highway guardrail terminal system (12) havi... |
|
1997
|
Invention
|
Sequential kinking guardrail terminal system. A highway guardrail terminal system having horizont... |
|
1989
|
Invention
|
Portable warning device. A portable warning device in the form of a stanchion which is to be read... |
