Abstract: The invention relates to an insulating panel fixing plug (10) having a hollow shank (12) with a holding plate (14) and having a clamping sleeve (18) protruding from the hollow shank (12). The invention provides for a closure part (24) to be arranged in the hollow shank (12), which closure part, as the insulating panel fixing plug (10) is set in position, is separated at a rupturable junction into two parts (30, 32), of which one part (30) is pulled back against a rear end of the hollow shank (12) as a drill bit (26) is withdrawn from the insulating panel fixing plug (10), and thereby closes off a cavity (16) of the hollow shank (12).

Abstract: The invention relates to a fastening element made from metal, having an expansion sleeve (2) and an expansion member (3), which expansion member (3) is axially displaceable on the shank of a threaded bolt (8), the threaded bolt (8) having on its forward end an end-stop in the form of an expander (9). On the threaded bolt (8), between the expander (9) and the expansion member (3), there is arranged a spacing element (10). In the event of a tensile load, the expander (9) enters the spacing element (10) and forms a deformation zone that corresponds to the length of the spacing element (10). As a result of the friction and deformation occurring in the deformation zone, overloads are absorbed and, consequently, the fastening element is prevented from coming out or the threaded bolt from breaking off.

Abstract: An expansible anchor for anchoring in a hole drilled in a component has a shank having a rear end provided with a structure for fixing an article and a front end provided with at least two portions of reduced cross-section with adjoining expander cones, expansible sleeve with a structure including an expansible sleeve positioned over each of the portions of reduced cross-section, at least two convex beads mounted on the expansible sleeve with a structure and projecting radially outwards, each of the beads being provided with at least one opening, and the two portions of reduced cross-section having different diameters.

Abstract: A device for fastening an object to a wall including an insert having self-tapping external threading, a cavity, and an insertion end. A setting tool removably engages the insert cavity and has a tool blade protruding through the insert cavity and the insertion end. The tool blade includes a drilling point for making a rough opening in the wall. The setting tool screws the insert into the rough opening whereby the external threading engages the rough opening. A fastener is screwed into the insert cavity upon removal of the setting tool.

Abstract: An expansion anchor for insertion into a cylindrical hole of a mounting substrate possesses two expansion cones with coordinated expansion rings. The expansion rings are provided with radially protruding beads extending from the rear rim up into the center area of the expansion rings. Starting at the front rim in an insertion direction, axial incisions are provided in addition to a traversing slot, which define an expansion area of the expansion rings.

Abstract: A composite anchor for insertion in a borehole in a soil consists of an anchoring rod with several expanding cones and is surrounded, in its insertion section, by a screen sleeve of a wire mesh, which screen sleeve effects a borehole cleaning and mixing of the mortar compound as the composite anchor is driven in.

Abstract: A tie rod with a fastening section presenting several spreading cones is provided with a cage which divides the hardenable mortar composition used for the fastening in a cylindrical bore hole into segments. On the occurrence of a crack through the fastening ground of the bore hole, a respreading of the mortar shell formed by the hardenable mortar composition is made possible by a tensile force on the tie rod.

Abstract: An undercutting drill for obtaining a drill hole with a conical undercut. A drill shaft is provided connected in an articulated manner through a housing and containing a universal joint to a clamping shank. The face of the housing facing the joint. The drill shaft is provided with a plate having a stopping face, the vertical centerline of which is tilted in relation to the longitudinal axis of the drill shaft.

Abstract: A spreading anchor comprising an anchor rod (1) including a spreading cone (5) on its front end (4) in the direction of insertion of said anchor (1), the spreading cone (5) flaring in the insertion direction and adapted to cooperate with a spreading sleeve (9) which is provided with several longitudinal slots (10), said slots (10) originating from the front rim (11) of said spreading sleeve (9) and forming spreading lamellae (18), at least two of said spreading lamellae (18) being opposed, the end faces (21) of said opposed lamellae (18) in the insertion direction being provided with cutting inserts.

Abstract: A dispenser for storing, mixing and dispensing two components. A casing contains the first component and has a piston therein. A mixing tube containing the second component is axially housed in the casing and has an open end sealed by the piston until mixing of the two components is desired. The mixing tube has a mixing plate adjacent the open end to agitate and mix the two components. The mixing plate comprises arms extending from the mixing with flapping vanes attached on one side of each arm.

Abstract: An anchoring bolt (1), which can produce a conical undercut by rotation in a cylindrical hole and serves simultaneously as a securing element has a connection portion (2), a shaft (4) and an insertion portion (5). The insertion portion (5) has an axially extending slot (6) forming two spreadable branches (8,9), into which slot a movable spreading wedge (18) can be driven in with its tapered end. The branches (8, 9) are each provided with drillings (14, 15) receiving hard metal pins (16, 17) of which the front edges, in the rotation direction, are more protuberant than the rear edges so as to form a clearance angle .alpha..

Abstract: An arrangement for mounting an object to a support structure having a rear side which is difficult of access, has an anchoring element including a base portion and a plurality of leg portions extending from the base portion, and a mounting element arranged for mounting the object to the support structure and urging the anchoring element to abut against the support structure at the rear side thereof. The leg portions of the anchoring element are substantially rigid in a longitudinal direction which corresponds to a loading direction of the arrangement, and are resiliently yieldable in a transverse direction so that when the anchoring element is inserted into a mounting hole of the support structure the leg portions are urged toward one another in the transverse direction, and when the anchoring element passes rearwardly beyond the rear side of the support structure the leg portions spread apart from one another in the transverse direction.

Abstract: A set of fixing elements for mounting radiators or like bodies on walls comprises a wall fitting, such as a bracket arm of the knock-in or surface-mounting bracket type, associated with a holder for a radiator or like body. The holder is attachable to the wall fitting by a connector in the form of a clip which can be adjustably attached to the wall fitting and clamped in position. The wall fitting is traversed at its freely projecting end by a slot for the reception of part of said clip.

Abstract: A hammer-drill or the like has a chuck formed with a first bore and with a second bore which intersects the first bore. A tool bit has a shank that is receivable in the first bore and is provided with a surface recess transverse to the elongation of the first bore. A locking stud is received and axially shiftable in the second bore between one position in which it extends through the recess and locks the tool bit in the first bore, and another position in which it is retracted out of the recess. An arresting arrangement is provided which normally arrests the locking stud in its tool-locking position, and which can be operated to release the stud so that the same can be moved out of this position.