Method for reinforcing structural members

Details Method for reinforcing structural members Method for reinforcing structural members

B - Operations, Transporting

29

C

B29C 44/18 (2006.01) B29C 44/12 (2006.01) B60N 2/68 (2006.01) B60R 21/13 (2006.01) B62D 29/00 (2006.01)

Patent

CA 2242283

A method for reinforcing a selected portion of a structural part utilizes a flexible tube having a unexpanded, preferably thermally expandable resin sheath. The sheath may be limited to a selected region along the length of the flexible tube. The flexible tube is inserted through a curved passage and conforms to the geometry of the part to be reinforced. After the portion of the tube having the sheath reaches the desired location, the tube is secured in place. Upon heating, the resin expands to several times its original volume and fills the structural cavity only at that region.

Cette invention concerne une méthode de renforcement localisé d'un élément de structure, qui fait appel à un tube flexible comportant une gaine de résine expansible par voie thermique de préférence. Cette gaine peut ne couvrir qu'une partie du tube flexible. Celui-ci est inséré dans une partie courbée de l'élément de structure dont il épouse la forme en raison de sa flexibilité. Lorsque la partie gainée du tube se trouve à l'endroit approprié, celui-ci est calé en place. Chauffée, la résine gonfle pour occuper plusieurs fois son volume initial et ainsi remplir complètement l'élément structural à l'endroit où elle se trouve.

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