Abstract: 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 position, and an energy absorber mechanically coupled to the supporting member, where the energy absorber absorbs energy when the supporting member travels from a first position to a second position.

Abstract: A vehicle barrier system. The vehicle barrier system includes a base, an arm hingably mechanically coupled to the base, a raising/lowering mechanism in mechanical communication with the arm, and a cable supported by the arm, the cable mechanically coupled to first and second anchors placed on opposite sides of an area through which a vehicle may pass, and the raising/lowering mechanism moves the arm and the cable between a first position and a second position.

Abstract: An enhanced vehicle barrier system. The enhanced vehicle barrier system including bases located on opposite sides of an area through which a vehicle may pass, first and second arms hingably mechanically coupled to a base, first, second and third members, a raising/lowering mechanism, and a cable in mechanical communication with at least one of the first, second, and third members, the cable having connecting points located on opposite sides of the area through which a vehicle may pass, and wherein, in one position, at least portions of the first, second, and third members and the cable may be high enough to encounter a front of a vehicle.

Abstract: A removable barricade system. The system having a first sleeve to be affixed to a first bollard, a second sleeve to be affixed to a second bollard, and a barricade attached to the first and second sleeves. The barricade blocks the area between the first and second bollards.

Abstract: 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. A net extends across the road and is attached to the opposite ends of the shock absorbers. Collision of an automobile with the net creates tensile forces in the net. The shock absorbers expand while rotating about the pipe's axis in response to tensile forces from the net that meet or exceed a minimum threshold. Forces from the net pass through the axis of the steel pipe. The net is stored in a pit transverse the roadway parallel to the railroad tracks and is raised and lowered as appropriate. The net includes a cable that extends across the road in a wave pattern, having peaks, valleys and midpoints, wherein tangents of the wave midpoints are at least 90 degrees from tangents of the peaks and valleys.

Abstract: 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 the supporting member, wherein the energy absorber absorbs energy when the supporting member travels from a first position to a second position.

Abstract: 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 position, and an energy absorber mechanically coupled to the supporting member, where the energy absorber absorbs energy when the supporting member travels from a first position to a second position.

Abstract: 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 net via a first upper frangible tensioner and mechanically coupled to and supporting a lower portion of the net via a first lower frangible tensioner. A second raising/lowering arm arranged on another side of the roadway, the second raising/lowering arm mechanically coupled to and supporting an upper portion of the net via a second upper frangible tensioner and mechanically coupled to and supporting a lower portion of the net via a second lower frangible tensioner. The first and second upper and first and second lower frangible tensioners decouple from the net upon application of a predetermined force.

Abstract: 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 position.

Abstract: 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 force to the frangible connector. In another aspect, the system further includes an energy absorber mechanically coupling the net and the anchor. In another aspect, the system further includes a joint mechanically coupling the energy absorber and the anchor, wherein the joint pivots on a horizontal axis.

Abstract: 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 accommodate the net, when the net is in a lowered position.

Abstract: 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. A net extends across the road and is attached to the opposite ends of the shock absorbers. Collision of an automobile with the net creates tensile forces in the net. The shock absorbers expand while rotating about the pipe's axis in response to tensile forces from the net that meet or exceed a minimum threshold. Forces from the net pass through the axis of the steel pipe. The net is stored in a pit transverse the roadway parallel to the railroad tracks and is raised and lowered as appropriate. The net includes a cable that extends across the road in a wave pattern, having peaks, valleys and midpoints, wherein tangents of the wave midpoints are at least 90 degrees from tangents of the peaks and valleys.

Abstract: 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 rotational, axial, and orthogonal movement. Forces applied to the shock absorber always pass through the axis of the steel pipe, thereby maximizing the resistance to the force while minimizing the necessary size of the system. A net is stored in a pit transverse the roadway parallel to the railroad tracks and is raised and lowered as appropriate. Each end of the net is attached to shock absorbing systems of the type described above.