Abstract: A pipe clamp including a substantially U-shaped upper stirrup (2) having a base section (3), two substantially linear upper arms (4.5) projecting from the base section (3) and having their end portions extending substantially parallel to each other, and a stiffening member (19) extending from one upper arm (4) to another upper arm (5) and spanning a free cross-section of the pipe clamp (1) a substantially U-shaped lower stirrup (6) having a substantially circular shape, and two lower arms (8,9), and articulated connection element (10) for pivotally connecting one of the upper arms (5) of the upper stirrup (2) with one of the lower arm (9) of the lower stirrup (6), and a locking element (13) located opposite the articulated connection element (1) for releasably connecting another of the upper arms (4) of the upper stirrup (2) with another of the lower arms (8) of the lower stirrup (6).

Abstract: An expansion dowel includes an axially extending cylindrically-shaped expansion sleeve (2) having an axially extending expansion region (5) with one of axially extending slots or grooves therein and a central bore (4) tapering inwardly toward a leading end of the sleeve facing in the setting direction (S). The central bore (4) is shaped to receive an expanding member (6). The expanding member (6) has a trailing end face in contact with a safety element (11) for preventing axial displacement of the expanding member (6) opposite to the setting direction. The safety element (11) has a radially outer circumferential surface that can be enlarged in the circumferential direction by a pin-shaped member (7) having a conically-shaped region which can be driven in the setting direction into the safety element. The expanding member (6) is shaped at its trailing end region for receiving a leading end region (9) of the pin-shaped member (7).