Screw anchor

Details Screw anchor Screw anchor

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 5/02 (2006.01) F16B 25/00 (2006.01)

Patent

CA 2621235

The invention relates to a screw anchor for fixing wood components to concrete or masonry. Said anchor has a shaft (1) comprising a first threaded section (2) with a wood screw thread (6) for screwing into wood, and a second threaded section (3) with a concrete thread (7) for screwing into concrete, the pitch (P2) of the wood screw thread being equal to, or slightly smaller than, the pitch (P1) of the concrete thread (7).

L'invention concerne une vis d'ancrage servant à fixer des éléments en bois sur du béton ou sur un ouvrage de maçonnerie. Cette vis d'ancrage comprend une tige (1) comportant une première section filetée (2) pourvue d'un filetage de vis à bois (6) pour un vissage dans du bois et une seconde section filetée (3) pourvue d'un filetage à béton (7) pour un vissage dans du béton, le filetage de vis à bois présentant un pas (P2) légèrement inférieur ou égal au pas (P1) du filetage à béton (7).

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