Abstract: A composite structural reinforcement has a keyed reinforcement member in which a thermally expandable resin strip is mechanically retained. The mechanical interlock permits the resin to be secured to the member without heat or an adhesive.

Abstract: A tube reinforcement assembly is designed to reinforce complex tube structures, such as those having bends and/or varying cross-sectional areas. The assembly includes a plurality of modular pillars, each having a structural foam coating. The modular pillars are grouped together with resilient retaining mechanisms or by an external positioning mechanism to form an assembly having a resiliently variable cross-sectional area. When the assembly is placed inside a tube structure, the pillars are squeezed together to fit around bends or in areas having smaller cross-sectional areas in the tube structure. When the assembly reaches an area in the tube structure having a larger cross-sectional area, the resilient connection between the pillars allow the pillars to separate and fill the extra space, holding the assembly in place temporarily. Once the reinforcement assembly is in a selected area, the structural foam is expanded to hold the assembly in place permanently and reinforce the tube structure at that point.

Abstract: A tube reinforcement assembly is designed to reinforce complex tube structures, such as those having bends and/or varying cross-sectional areas. The assembly includes a plurality of modular pillars, each having a structural foam coating. The modular pillars are grouped together with resilient retaining mechanisms or by an external positioning mechanism to form an assembly having a resiliently variable cross-sectional area. When the assembly is placed inside a tube structure, the pillars are squeezed together to fit around bends or in areas having smaller cross-sectional areas in the tube structure. When the assembly reaches an area in the tube structure having a larger cross-sectional area, the resilient connection between the pillars allow the pillars to separate and fill the extra space, holding the assembly in place temporarily. Once the reinforcement assembly is in a selected area, the structural foam is expanded to hold the assembly in place permanently and reinforce the tube structure at that point.

Abstract: A composite structural reinforcement has a keyed reinforcement member in which a thermally expandable resin strip is mechanically retained. The mechanical interlock permits the resin to be secured to the member without heat or an adhesive.