Fischerwerke Artur Fischer Gmbh & Co Kg

Degussa Aktiengesellschaft

Norbert Arnold

Willi Haug

Bernd Hein

Bernd Plocher

Manfred Haage

Stefan Lind

Guenter Seibold

Paul Gumpel

Wolfgang Wiebel

The hardenable mortar composition consists of a bonding agent component including a hydraulic bonding agent, such as cement, gypsum or mortar, and a paste-forming agent consisting of a liquid solvent inert with respect to the hydraulic bonding agent, and an aqueous component kept separate from the bonding agent component until the two components are mixed to form a hardened mortar composition. The aqueous component includes water and a hydrophobic adsorbent or absorbent. The hydrophobic adsorbent or absorbent is included in the aqueous component to avoid the emergence of the paste-forming agent, which is at the very least unsightly, when the aqueous component is mixed with the bonding agent component. The hydrophobic adsorbent or absorbent binds the paste-forming agent which would otherwise escape during mixing and remains as an inert additive in the setting mortar composition, without reducing the hardness thereof.

Hardenable mortar composition

Interlocking metal parts that slide under pressure on one another are manufactured so that at least one metal part is manufactured by a powdered metal injection-molding method, an in order to improve the sliding behavior and to minimize the binding tendency, a non-metallic substance having a structured arrangement of molecules is admixed in powdered or granular form with the powdered metal of the metal part manufactured by powder injection molding. The substance is inert towards the metal and has a thermal stability of at least 900.degree. C. In particular, ceramic solid materials or fillers are suitable substances.

Method of producing interlocking metal parts

A method of manufacturing an expansible anchor comprises the steps of forming one part as a partially slotted expansible sleeve composed of corrosion-resistant steel and anchorable in a building component, forming another part as an expander body composed of corrosion-resistant steel and arranged to be driven into the expansible sleeve so as to anchor the expansible sleeve in the building component, enriching one of the parts with interstitially dissolved, non-metallic alloying constituents selected from the group consisting of carbon, nitrogen and boron, and ageing by heat treating so as to precipitate the alloying constituents in the form selected from the group consisting of carbides, nitrides and borides, respectively, to achieve increased hardness.

Method for the manufacture of an expansible anchor consisting of

The mortar composition for fixing an anchoring element in a drilled hole in a substrate consists of a water component and a mineral mortar paste held separately from the water component in a crushable container. The mineral mortar paste includes a mixture of mineral mortar and a liquid solvent chemically inert towards the mineral mortar and the mineral mortar paste is hardenable with the water component to form a hardened mortar compound. The water component consists of water and a thixotropic agent so that the water component acts like a paste when not subject to shear forces but flows when subject to shear forces such as those created by the anchoring element advancing in the drilled hole. The thixotropic agent is advantageously amorphous pyrogenic silicic acid.

Mortar composition including a mineral mortar paste

The anchoring cartridge for anchoring a fastening element in a drilled hole has two chambers. One chamber contains from 1.0 to 10% of a hardener component dissolved in a mixture of styrene and an unaccelerated radical-curing resin and the other chamber contains an accelerator mixed with another mixture of styrene and unaccelerated radical-curing resin. By including unaccererated radical-curing resin in both chambers a homogeneous curing of the components is ensured.

Anchoring cartridge for anchoring a fastening element in a drilled hole

Oblique web multiple surface panel boards are disclosed made of aromatic polycarbonates (PC), consisting of at least two boards arranged parallel to one another at a given distance apart and joined together by webs arranged between them, one portion of the webs connecting the upper and lower board in zigzag formation, viewed in cross-section, while the other portion of the webs is attached to the upper or lower board at the junctions of the oblique webs and extends perpendicularly towards the opposite board.

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Waldachtal, Germany

Norbert Arnold