Anchor for hollow walls

F - Mech Eng,Light,Heat,Weapons – 16 – B

Patent

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Details

F16B 13/06 (2006.01) B29C 37/00 (2006.01) B29D 1/00 (2006.01)

Patent

CA 2509379

An anchor (910) for mounting to a hollow wall (W) made of friable material comprises a proximal flanged end (918) adapted to be engaged by a rotatable tool (B) to rotate the anchor (910) about a longitudinal axis (A) thereof and to cause is to gradually engage the wall (W). The anchor (910) also includes a distal end (912) adapted to cut through the wall (W) as the anchor (910) is rotated, and a shank (920) extending between the proximal and distal ends (918, 912). The shank (920) includes at least one expandable leg (924) that is in a collapsed position thereof when the anchor (910) is rotated to mount it to the wall (W) and that is located distally beyond a non visible surface of the wall (W) once the anchor (910) has been mounted to the wall and is in a first position thereof. The wall anchor (910) includes an outer thread (922) that securely engages the wall (W). A threaded fastener (B), e.g. a screw, is adapted to be introduced in the anchor (910) and to threadably engage the same distally of the leg (924) such that sufficient rotation of the threaded fastener (B) retracts the distal end (912) towards the proximal end (918) thereby causing the leg (924) to displace to a laterally expanded position thereof and to engage the non visible surface of the wall (W).

Cette invention concerne un ancrage (910) pour montage dans un mur creux (W) fait d'un matériau friable, comprenant une extrémité proximale à collerette (918) dans laquelle vient s'engager un outil rotatif (B) qui fait tourner ledit ancrage (910) sur son axe longitudinal (A) et le fait progressivement pénétrer dans le mur (W). L'ancrage (910) comprend également une extrémité distale (912) faite pour percer le mur (W) au fur et à mesure que ledit ancrage (910) tourne, et une tige (920) comprise entre les extrémités proximale et distale (918, 912). La tige comprend au moins un manchon (924) en position d'escamotage pendant la rotation de l'ancrage (910) dans le mur (W), qui est disposé distalement au delà d'une surface non visible du mur (W) une fois l'ancrage (910) mis en place dans le mur dans une première position. L'ancrage (910) présente un filetage (922) qui prend solidement dans le mur (W). Une fixation filetée (B), telle qu'une vis, est conçue pour être insérée dans l'ancrage (910) et se visser distalement dans le manchon (924) de telle sorte qu'une rotation suffisante de la fixation filetée (B) a pour effet de rappeler l'extrémité distale (912) vers l'extrémité proximale (918) et, par là même, de faire se déplacer le manchon (924) latéralement en le dilatant et de l'engager dans la surface non visible du mur (W).

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