Patent ID: 7025538
Filing Date: 2006-04-11
Classification: E21D,F16B

Abstract:
1. An anchor to be bonded in a receiving material comprising an axially extending anchor tube ( 2 ) and a receiving means arranged in said anchor tube, said receiving means comprises an axially extending inner tube ( 3 ) for holding a dispensable chemical mass ( 4 ) for bonding the anchor tube ( 2 ) when dispensed, and said inner tube ( 3 ) is spaced radially inwardly from said anchor tube ( 2 ) and forming a gap therebetween said anchor tube ( 2 ) has a leading end ( 5 ) with a drill head ( 6 ) and an opposite trailing end ( 7 ) to which a drilling machine can be coupled for rotary driving of said anchor tube ( 2 ) and its contents, a centering assembly radially inwardly of said anchor tube ( 2 ), said centering assembly comprising at least one centering element ( 11 , 21 ) having a radial outer stop surface ( 17 ) cooperating with an inner surface of said anchor tube ( 2 ) and a radially inner stop surface ( 18 ) cooperating with an outwardly facing surface of said receiving means for radial alignment of said receiving means in said anchor tube ( 2 ), said at least one centering element ( 11 , 21 ) has stop surface ( 16 , 26 ) projecting at least partially into a projection of one of an end ( 15 ) of said receiving means for axial support of said receiving means.