Abstract: Various embodiments for a coiled containment guardrail system and terminal are described. A guardrail system can include a terminal head configured for placement at a distal end of a guardrail beam, where the terminal head includes a canister having a hollow interior and an impact surface. A chute can be coupled to the terminal head, where the chute is configured to guide a guardrail beam into the terminal head in response to an impact being experienced at the impact surface. The terminal head may further include a flattening device coupled to the chute configured to flatten the guardrail beam in response to the impact being experienced at the terminal head. The canister can be configured to coil and store the guardrail beam as flattened by the flattening device in the hollow interior of the canister.

Abstract: In one embodiment, a protective helmet includes an outer shell made of a polyethylene material, wherein the shell is locally deformable when impacted with a strong force and an inner liner provided within the outer shell. A protective helmet comprising: an outer shell made of a polyethylene material, wherein the shell is locally deformable when impacted with a strong force; and an inner liner provided within the outer shell.

Abstract: In one embodiment, a tether system for use with a protective helmet worn by a user includes multiple tethers, each tether having a first end adapted to attach to a shell of the protective helmet and a second end adapted to attach to an article worn by the user, wherein the tethers limit movement of the helmet.

Abstract: A protective helmet includes an outer shell, an inner liner provided within the shell, a chinstrap coupled to the shell including a chin cup adapted to contact and protect the wearer's chin, and decoupling means that decouple the shell from the chin cup to enable the shell to rotate relative to the head when the helmet is worn and the chinstrap is securely fastened about the chin.

Abstract: In one embodiment, a helmet testing system includes a sled adapted to support a bullet dummy, a track along which the sled can travel, a target dummy support apparatus adapted to support a target dummy at a point near an end of the track, and an impact cushion positioned at the end of the track that is adapted to halt forward motion of the sled along the track to enable the bullet dummy to be launched from the sled and into the target dummy.

Abstract: In one embodiment, a method for analyzing sports impacts includes capturing video of game play from multiple locations using video cameras, tracking the heads of players of the games in the video, computing motion parameters of the heads, and determining if one or more of the motion parameters exceeds a threshold established for that parameter.

Abstract: A protective helmet includes an outer shell, an inner liner provided within the shell, a chinstrap coupled to the shell including a chin cup adapted to contact and protect the wearer's chin, and decoupling means that decouple the shell from the chin cup to enable the shell to rotate relative to the head when the helmet is worn and the chinstrap is securely fastened about the chin.

Abstract: A self-restoring crash cushion including multiple diaphragms spaced along a length direction of the cushion, an elongated track adapted to be anchored to the ground that extends along the length direction under the cushion, the diaphragms being mounted to the track in a manner in which they can slide along the track when impacted by a moving vehicle or when the cushion is being restored, and means for dissipating energy of the moving vehicle.

Abstract: In one embodiment, a tether system for use with a protective helmet worn by a user includes multiple tethers, each tether having a first end adapted to attach to a shell of the protective helmet and a second end adapted to attach to an article worn by the user, wherein the tethers limit movement of the helmet.

Abstract: In one embodiment, a protective helmet includes an outer shell and an inner liner provided within the outer shell, the liner comprising an energy absorber including a first layer, an opposed second layer, and a plurality of energy absorbing columns provided between the layers, wherein the columns include relatively long columns that are attached to both the first and second layers and relatively short columns that are attached to only one of the first and second layers.

Abstract: In one embodiment, a protective helmet includes an outer shell made of a polyethylene material, wherein the shell is locally deformable when impacted with a strong force and an inner liner provided within the outer shell. A protective helmet comprising: an outer shell made of a polyethylene material, wherein the shell is locally deformable when impacted with a strong force; and an inner liner provided within the outer shell.

Abstract: In one embodiment, a bollard system includes multiple support beams adapted to be embedded in concrete, multiple bollards, each bollard being attached to a support beam a point near a center of the beam, and a reinforcing bar that is woven between the support beams to provide reinforcement to the system.

Abstract: In one embodiment, a self-restoring crash cushion including multiple diaphragms spaced along a length direction of the cushion, an elongated track adapted to be anchored to the ground that extends along the length direction under the cushion, the diaphragms being mounted to the track in a manner in which they can slide along the track when impacted by a moving vehicle or when the cushion is being restored, and means for dissipating energy of the moving vehicle.

Abstract: In one embodiment, a helmet testing system includes a sled adapted to support a bullet dummy, a track along which the sled can travel, a target dummy support apparatus adapted to support a target dummy at a point near an end of the track, and an impact cushion positioned at the end of the track that is adapted to halt forward motion of the sled along the track to enable the bullet dummy to be launched from the sled and into the target dummy.

Abstract: In one embodiment, a method for analyzing sports impacts includes capturing video of game play from multiple locations using video cameras, tracking the heads of players of the games in the video, computing motion parameters of the heads, and determining if one or more of the motion parameters exceeds a threshold established for that parameter.

Abstract: In one embodiment, a bollard system includes multiple support beams adapted to be embedded in concrete, multiple bollards, each bollard being attached to a support beam a point near a center of the beam, and a reinforcing bar that is woven between the support beams to provide reinforcement to the system.

Abstract: An energy absorbing system includes a tube section having a distal end and an energy absorber mounted to the tube section and receiving its distal end, the energy absorber including a folding section and a compressing section inward, the folding section being adapted to fold opposed walls of the tube section and the compressing section being adapted to compress the tube section after it has been folded.

Abstract: In one embodiment, an energy absorbing system includes a tube section having a distal end and an energy absorber mounted to the tube section and receiving its distal end, the energy absorber including a folding section and a compressing section inward, the folding section being adapted to fold opposed walls of the tube section and the compressing section being adapted to compress the tube section after it has been folded.

Abstract: A highway guardrail terminal having horizontally extending guardrail elements mounted on a plurality of vertical posts. An anchor cable release mechanism having a cable release bracket attached to a W-beam rail element by cable release bolts has an arrangement of tapered slots and elongated openings to quickly release the cable release bracket from the W-beam rail element upon end-on vehicular impact to the terminal. The tapered slots have a geometry which lifts the bracket away from and out of a parallel alignment with the W-beam rail element.

Abstract: A system and method for a device for releasing a cable of a safety system is disclosed. The system and method disclose various features of the cable system as it applies to a roadway barrier system and other applications in the event that the cables are impacted generally longitudinally proximate the region they are secured to a surface.