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: A method for producing stratification mass for the production of top surfacing layers particularly through dipping, painting, filling or spraying on a carrier (especially for friction/slide layers of bearing laminates having metallic base members) of a matrix foundation substance of fluoride-held polymers which has admixed metal or metal-alloy particles and/or additive material with friction and/or slide-improving characteristics. The applied layer material is subjected to heat to melt the same, and the layer is then cooled and pressed. The synthetic substance of the matrix can contain a primer, such as chromium oxide.

Abstract: A stratification mass for the production of top surfacing layers particularly through dipping, painting, filling or spraying on a carrier (especially for friction/slide layers of bearing laminates having metallic base members) of a matrix foundation substance of fluoride-held polymers which has admixed metal or metal-alloy particles and/or additive material with friction and/or slide-improving characteristics. The applied layer material is subjected to heat to melt the same, and the layer is then cooled and pressed. The synthetic substance of the matrix can contain a primer, such as chromium oxide.

Abstract: A bearing laminate and method of producing the same, wherein a metallic suspension alloy having a tendency to dissociate is thermokinetically applied as a coating to a substrate, such coating in its solid state becoming dissociated. The substrate and the applied coating are mechanically compressed after the application and solidification of the latter. The surface of the substrate which receives the suspension alloy coating is especially prepared, either as a rough surfaced base or else as an aluminum or aluminum alloy surface having a surface activation and grain structure that is produced by a brief heating to a temperature between 450.degree. and the melting point of the aluminum or aluminum alloy, such heating destroying and removing the aluminum oxide.

Abstract: A slide bearing laminate and method for producing the same, wherein a low-friction composite facing or layer is secured to a carrier or foundation strip by a bonding procedure. The composite facing comprises textile material having a low-friction component on one side and a glueable component on the other side, which latter is bonded to the carrier strip. The adhesive or bonding agent preferably occupies the interstices of the composite facing, and is especially formulated to resist failure by being mixed not only with friction and heat-conducting filler elements but also with fibrous fillers which particularly contribute to the failure resistance.

Abstract: A laminate for anti-friction and slide members, comprising a metallic substrate strip having bonded to its surface a slide layer of thermally, highly stressable plastics containing thermosetting polyimide resins and polytetrafluorethylene, wherein the slide layer additionally contains polyimide lacquer mixed therein in the form of a fine powder to bond the layer to the substrate, said lacquer containing thermoplastic material selected from the group consisting of polyarylene sulfide, aliphatic polysulfide and polysulfone, thereby to improve the heat and abrasion resistance of the slide layer.