E - Fixed Constructions – 04 – H
Patent
E - Fixed Constructions
04
H
E04H 12/22 (2006.01) B23B 51/02 (2006.01) F16B 25/10 (2006.01)
Patent
CA 2597950
Disclosed is a post anchor (1) comprising two final sections (11, 12), one (11) of which can be introduced into a post (10) while the other one (12) is used for fixing the anchor (1) to or in another element. The section (11) that can be introduced into the post represents a drill bit section (11) which is used for introducing a bore (20) into the post (10) in a substantially stress- free manner. The drill bit section (11) in the bore (20) is provided with essentially no axial clearance and is preferably embodied as a screw bit. The drill bit section (11) has a first smaller drill core diameter (31) in a first zone (31) bordering the tip thereof while having a larger drill core diameter (32) in a second zone (32) located closer to the other section (12) in the longitudinal direction thereof (13).
L'invention concerne une tige d'ancrage (10) de bloc support constituée de deux segments terminaux (11, 12), l'un (11) des segments étant introduit dans un bloc support (1) et l'autre segment (12) étant destiné à être fixé sur ou dans un autre élément. Le segment (11) introduit dans le bloc support est un segment de forage (11) permettant de pratiquer, d'une manière essentiellement exempte de copeaux, une forure (20) dans le bloc support (1). Le segment de forage (11) situé dans la forure (20) et ne présentant pratiquement pas de jeu axial est de préférence une mèche à bois à simple spirale. Le segment de forage (11) comporte, dans son orientation longitudinale (13) et dans une première zone (31) adjacente à sa pointe, un premier diamètre de forage (31) de faible dimension et, dans une deuxième zone (32) plus proche de l'autre segment (12), un deuxième diamètre de forage (32) plus grand.
Bertola Bruno
Fankhauser Urs
Cassan Maclean
Ed. Geistlich Sohne Ag Fur Chemische Industrie
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