| Patent Number |
Title Of Patent |
Date Issued |
| 7785031 |
Energy absorbing system |
August 31, 2010 |
| A heavy duty ground retractable automobile barrier for a railroad crossing. Concrete bunkers are placed at each side of a roadway. An upstanding concrete-filled steel pipe fixed in each bunker has a sleeve for rotational and axial movement. Shock absorbers are mounted on each sleeve. |
| 7530759 |
Retractable energy absorbing system |
May 12, 2009 |
| An energy absorbing system. The energy absorbing system includes a supporting member, a barrier mechanically coupled to the supporting member, the barrier pivotable between a substantially horizontal position and a predetermined angle, and an energy absorber mechanically coupled to t |
| 7484905 |
Energy absorbing bollard system |
February 3, 2009 |
| An energy absorbing system. The energy absorbing system includes a supporting member, a barrier pivotable between a first angular position and a second angular position, where the barrier becomes mechanically coupled to the supporting member when arranged at a predetermined angular p |
| 7441983 |
Energy absorbing system with support |
October 28, 2008 |
| An energy absorbing system. The system includes two anchors, a net mechanically coupled thereto and spanning a roadway, and a first raising/lowering arm arranged on one side of the roadway. The first raising/lowering arm mechanically coupled to and supporting an upper portion of the |
| 7377716 |
Net and mat |
May 27, 2008 |
| An energy absorbing system. The energy absorbing system spanning a roadway and including a net spanning the roadway, the net having a first member coupled to a second member, and a mat arranged on the roadway, the mat having recesses to accommodate the net when the net is in a lowered |
| 7210873 |
Energy absorbing system with support |
May 1, 2007 |
| An energy absorbing system. The system includes an anchor, a net mechanically coupled to the anchor, and a support mechanically coupled to the net via a frangible connector, wherein the frangible connector uncouples the support from the net upon application of at least a threshold fo |
| 7195419 |
Net and mat |
March 27, 2007 |
| An energy absorbing system. The energy absorbing system spanning a roadway and including a net spanning the roadway, the net having a connecting member coupled to a top member, a middle member and a bottom member, and a mat arranged on the roadway, having a plurality of recesses to a |
| 6843613 |
Energy absorbing system |
January 18, 2005 |
| A heavy duty ground retractable automobile barrier for a railroad crossing. Concrete bunkers are placed at each side of a roadway. An upstanding concrete-filled steel pipe fixed in each bunker has a sleeve for rotational and axial movement. Shock absorbers are mounted on each sleeve. |
| 5762443 |
Ground retractable automobile barrier |
June 9, 1998 |
| A heavy duty shock absorber system for resisting large forces as may be encountered, for example, in a restraining barrier for a railroad crossing. A concrete bunker with an upstanding concrete-filled steel pipe has a hydraulic, compressive shock absorber mounted on the steel pipe for |
