Abstract: The invention concerns a reagent kit designed to produce elements of synthetic resin for anchoring fixation elements in place by bonding them in multi-cavity plugs. The reagent kit comprises (a) a reagent mixture containing 2,2-bis-[4-(methacryloxyethoxy)phenyl]propane and an optionally unsaturated polyester resin, vinyl resin or acrylic resin or a mixture of these, (b) an accelerator component comprises an organic peroxide and (c) a filler component, the accelerator component (b) being kept separate from the reagent mixture (a) before use.

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 destructible multiple chamber cartridge for the in situ production of synthetic resin bodies from a reactive set for fastening anchoring elements in boreholes. The reactive set comprises between 18 and 25 parts by weight of a preaccelerated resin component composed of 3-60 parts by weight of a vinyl ester epoxy resin, 28-45 parts by weight of one or several ethylenically unsaturated monomer compounds, 63-3 parts by weight of an unsaturated polyester, and 10-0.1 parts by weight of epoxy resin. The reactive set further comprises 0.4-1.2 parts by weight of a hardener component comprising an organic peroxide, and 40-55 parts by weight of a filler component. The hardener component and the preaccelerated resin component are contained separate from each other in different chambers. When the fastening element is driven into the borehole, the cartridge is destroyed and the components are mixed and hardened, forming the synthetic resin body.

Abstract: A reactive composition for preparing synthetic resin bodies used in destructible multible-chamber cartridges and a process for anchoring a fastening element to the fastening base by introducing the destruction multiple-chamber cartridges containing the components of a curable adhesive in a drilling in the fastening base. When the fastening element is driven into the hole, the cartridge is destroyed, the synthetic resin components are mixed and harden forming a synthetic resin body. The reactive compound contains between 18 and 25 parts by weight of a pre-activated resin component composed of (A) between 3 and 60 parts by weight of a vinylester epoxy resin, (B) between 28 and 45 parts by weight of one or several ethylenically unsaturated monomeric compounds and (C) between 63 and 3 parts by weight of an unsaturated polyester and if necessary (D) between 10 and 0.1 part by weight of epoxy resin, between 0.4 and 1.2 parts by weight of hardeners and between 40 and 55 parts by weight of fillers.

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: 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: In order to produce conical undercutting of the bore when the anchoring bolt is driven into a previously bored hole with a percussion drill, the insertion end of the bolt has a slot into which the thin end of a wedge is inserted. Hard metal pegs set in radial bores near the insertion end of the bolt at diametrically opposite places on the periphery of the bolt protrude slightly and, as the bolt is driven into place, the wedge spreads its insertion end and causes the hard metal pegs to undercut the walls of the bore more and more as the bolt is set in place. A conical undercutting of the bar thus results.

Abstract: Particles of a coloring agent having opaque sheaths which are the color of a mortar mass, are introduced into the reactive mortar mass to signal the distribution of hardener therein.

Abstract: An anchor rod for insertion in a fastening matrix such as a concrete structural element, by means of a hand-held percussion drill, has a smooth mid-section of slightly reduced diameter just below a slightly thickened intermediate collar that separates it from threading at the external end of the rod and has a profiled ridge and groove section at its insertion end which has a lefthand twist for insertion with a righthand rotation, as well as a frustoconical flat tip. The profiled section increases in diameter gradually towards the tip. At least the profiled section is manufactured by cold deformation with flat ridge tops having minutely burred or beaded edges.

Abstract: An anchoring dowel has detent lugs which are yieldably connected to a body portion of the anchoring dowel at a merger region and project outwardly beyond the outer circumferential surface of the body portion in a relaxed condition while being at least partly received in a depression of the body portion when the anchoring dowel is inserted into an anchoring hole of a support structure. The lug has an outer face of a saddle-shaped configuration which merges with the outer circumferential surface of the body portion at the merger region, an elongated side face which commences at and merges into a generatrix of the outer circumferential surface at its end which is close to the leading end of the anchoring dowel and having a concave configuration, and an arcuate end face which extends from the merger region in a circumferential direction of the body portion and is curved in the same manner as the outer circumferential surface of the body portion.

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.