Wedge anchor for concrete

Details Wedge anchor for concrete Wedge anchor for concrete

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 13/06 (2006.01) E04C 5/12 (2006.01) E21D 20/00 (2006.01) E21D 21/00 (2006.01)

Patent

CA 2353728

An expansion wedge anchor (80) for insertion in a hole (H) delimited by a wall comprises an expander member (32) and an expansion number (34), the expander member being provided at a leading end of the expander member, the expander member comprising a flaring end (40), the expansion member being expandable at a trailing end (48) thereof and being adapted to engage the wall of the hole when the expander member is positioned in the hole, wherein upon longitudinal withdrawal of the expander member from the hole, the expander member displaces longitudinally relative to the expansion member with the flaring end thereof gradually causing the trailing end of the expansion member to expand, whereby a trailing edge of the expansion member engages the wall of the hole. The trailing end is adapted, when expanded by the flaring member, to extend at an angle with respect to a longitudinal axis of said expander member. In the method of setting the expansion wedge anchor in the hole, the following steps are found: (a) providing an expander member and an expansion member; and (b) displacing the expander member such as to cause a trailing end of the expander member to engage the wall of the hole.

La présente invention concerne un ancrage à expansion (80) destiné à un trou (H) dans un mur. Cet ancrage comprend un élément expandeur (32) et un élément expansible (34). L'élément expandeur comprend une extrémité menante présentant une partie évasée (40). L'élément expansible peut s'élargir au niveau de son extrémité arrière (48) et vient s'emboîter contre la paroi du trou lorsque l'élément expandeur est introduit dans ledit trou. Lors de son retrait hors du trou, l'élément expandeur se déplace longitudinalement par rapport à l'élément expansible, et son extrémité évasée amène progressivement l'extrémité arrière de l'élément expansible à s'élargir et à se plaquer contre la paroi du trou. Sous l'action de l'extrémité évasée de l'élément expandeur, l'extrémité arrière de l'élément expansible s'élargit obliquement par rapport à l'axe longitudinal de l'élément expandeur. Ainsi, cette méthode de fixation d'un ancrage à expansion dans un mur consiste à (a) placer un élément expandeur et un élément expansible dans un trou et (b) déplacer l'élément expandeur de manière à ce que l'extrémité arrière de l'élément expansible vienne se plaquer contre la paroi du trou.

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