Abstract: A percussion bores for forming borer in a stone material and including a chisel stem (2) having a prismatic cross-section and provided with a chiseling head (3) and at least one radial opening (4), a twist drill (6) extending through the cylindrical through-bore (3) of the chisel stem and projecting beyond the chiseling head (7), a drilling head (10) with cutting elements (9) provided at the projecting end of the twist drill and a shank (12) provided at another end of the twist drill, and a stop (13) provided between the shank (12) and the chisel stem (2), with a drill stem being offset radially inwardly with respect to an outer diameter of the shank in the region of the stop.

Abstract: A fixing member (1) designed for at least partially interlocking axial securement in a solid body (4) by means of an initially fluid setting material (2) introduced into a blind borehole (3), and is intermediately mechanically fixed and adjustable. The fixing member (1) is a peripherally closed medium to thickwalled tubular member (5), at least in part radially deformed and of uniform wall thickness having an axial passageway (6) extending through it.

Abstract: A concrete anchor bolt formed of an axially extending fixing member (1) having a first axially extending section (5) fixable in a tapped blind borehole (3) in a first solid body (4) secured by a temporarily fluid fixing agent (2) and an axially protruding second axially extending section (7) embeddable in a subsequently settable second solid body (6), wherein a conically shaped section sleeve (8) is present on the second section (7).

Abstract: A percussion bores for forming borer in a stone material and including a chisel stem (2) having a prismatic cross-section and provided with a chiseling head (3) and at least one radial opening (4), a twist drill (6) extending through the cylindrical through-bore (3) of the chisel stem and projecting beyond the chiseling head (7), a drilling head (10) with cutting elements (9) provided at the projecting end of the twist drill and a shank (12) provided at another end of the twist drill, and a stop (13) provided between the shank (12) and the chisel stem (2), with a drill stem being offset radially inwardly with respect to an outer diameter of the shank in the region of the stop.

Abstract: An anchor bolt having a substantially cylindrical stem (2), and at least one thread provided on the stem (2) and extending from a free front end of the stem at least over a portion of a longitudinal extent of the stem (2), the thread (6) having a plurality of thread turns (6) having, at least over one/third of the stem (2), a width (b1, b2) which decreases, with an increase of a distance of a respective thread turn (6) from the free front end of the stem (2), so that a distance (x1, x2, x3) between trailing and leading flanks (8, 7) of two following one another thread turns (6) of the thread increases backwards.

Abstract: A concrete anchor bolt formed of an axially extending fixing member (1) having a first axially extending section (5) fixable in a tapped blind borehole (3) in a first solid body (4) secured by a temporarily fluid fixing agent (2) and an axially protruding second axially extending section (7) embeddable in a subsequently settable second solid body (6), wherein a conically shaped section sleeve (8) is present on the second section (7).

Abstract: A fixing member (1) designed for at least partially interlocking axial securement in a solid body (4) by means of an initially fluid setting material (2) introduced into a blind borehole (3), and is intermediately mechanically fixed and adjustable. The fixing member (1) is a peripherally closed medium to thickwalled tubular member (5), at least in part radially deformed and of uniform wall thickness having an axial passageway (6) extending through it.