Patent ID: 7913467

Claim:
A reinforcement system for a structural member, the system comprising: a carrier member having a length extending between a first end and a second end, the carrier member including sidewalls joined together to form two or more cavities extending along the length of the carrier member, wherein each of the cavities are formed of a two sidewall portions that extend upwardly from a base wall toward a top wall wherein the base wall of one cavity is the top wall of an adjoining cavity, the carrier member including a cross-sectional shape roughly corresponding to the cross-sectional shape of interior walls of a hollow structural member; an activatable material placed on the carrier member, the activatable material is configured to expand upon application of heat and adhere to the interior walls of the hollow structural member to provide reinforcement to the same; and one or more restricting features located on or integrated with the carrier member and extending above the carrier member sidewalls, wherein each of the one or more restricting features includes a channel having two cavities located on opposite sides of the channel, the cavities forming openings extending towards each other, the openings having a cross-sectional shape corresponding roughly to a portion of the activatable material prior to activation so that the activatable material is located within the cavities and does not extend beyond the confines of the cavities prior to activation and the one or more restricting features being configured to receive the activatable material and limit movement of the activatable material with respect to the carrier member.