F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 15/00 (2006.01) E04C 5/16 (2006.01) F16L 15/04 (2006.01) F16B 7/18 (2006.01)
Patent
CA 2489548
The invention relates to a coupling for anchor bolts, comprising a sleeve (1) having an internal screw thread (5) and two anchor pipes (2) having an external screw thread (3), the ends (8) of said pipes being screwed into the sleeve (1). Said sleeve (1) is provided with an annular rib (4) in the longitudinal centre thereof, said rib having a cylindrical inner end surface (10). The ends (8) of the anchor pipes (2) engage in the annular rib (4) in a sealing manner, said ends being embodied with cylindrical thread-free circumferential surfaces (12) for this purpose. In order to improve the tightness of the coupling and to ensure that the transfer of impact energy from the first anchor pipe (2) to the second anchor pipe (2) does not engender much loss, the annular front surfaces (6) of the anchor pipes (2) are arranged against each other in a sealing manner in the region of the annular rib (4). In this way, a leak-free coupling for anchor bolts is provided, said coupling preventing the discharge of rinsing medium and/or setting mass.
L'invention concerne un accouplement pour boulons d'ancrage, comprenant un manchon (1) à taraudage (5) et deux tubes d'ancrage (2) à filetage (3), dont les extrémités (8) sont vissées dans le manchon (1). Ce manchon (1) porte en son centre longitudinal une nervure annulaire (4) présentant une surface d'extrémité intérieure cylindrique (10). Les extrémités (8) de ces tubes d'ancrage (2) s'engagent dans cette nervure annulaire (4) de façon étanche, lesdites extrémités étant pourvues de surfaces périphériques cylindriques (12) sans filetage. L'objectif de cette invention est d'améliorer l'étanchéité de l'accouplement et de permettre un transfert de l'énergie d'impact à faibles pertes du premier tube d'ancrage (2) au second tube d'ancrage (2). A cet effet, les faces de contact annulaires (6) de ces tubes d'ancrage (2) reposent l'une contre l'autre de façon étanche dans la zone de ladite nervure annulaire (4). On obtient ainsi un accouplement pour boulon d'ancrage sans fuite et empêchant l'échappement du milieu d'injection et/ou de la masse à prise.
Atlas Copco Mai Gmbh
Borden Ladner Gervais Llp
LandOfFree
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