F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
F16B 25/10 (2006.01)
Patent
CA 2651841
Disclosed is a screw for hard wood, comprising a screw tip (3) with two cutting edges (5) that extend approximately parallel to each other and perpendicular to the longitudinal axis of the screw. The cutting angle of the cutting edges amounts to about 90°. A centering tip (7) which slightly protrudes from the two cutting edges (5) is embodied in the extension of the longitudinal axis of the screw. Said centering tip (7) prevents the screw from deviating to the side at the beginning of the drilling process.
L'invention concerne une vis adaptée au bois dur, cette vis comprenant une pointe (3) présentant deux arêtes coupantes (5) sensiblement parallèles orientées perpendiculairement à l'axe longitudinal de la vis. L'angle de coupe des arêtes coupantes est égal à 90° approximativement. Une pointe de centrage (7) faisant saillie légèrement par rapport aux deux arêtes coupantes (5) est formée dans le prolongement de l'axe longitudinal de la vis. Cette pointe de centrage (7) empêche que la vis dévie latéralement au début du perçage.
Wanner Jurgen
Wolpert Frank
Wunderlich Andreas
Adolf Wurth Gmbh & Co. Kg
Norton Rose Canada S.e.n.c.r.l.,s.r.l./llp
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