Fischerwerke Artur Fischer Gmbh & Co Kg

Fischerwerke Gmbh & Co. Kg

Rainer Mallee

Wilfried Weber

Manfred Haage

Hartmut Bohnet

Bernd Hein

Klaus Kaupp

Burkhard Mayer

Werner Heinzelmann

Eberhard Mader

Jurgen Striebich

Gerd Schedler

Harald Guth

Martin Linka

Stefano Pampanin

Hannes Spieth

Knut Maier

The invention relates to an expansible anchor () for anchoring in a cylindrical drilled hole (). The invention proposes constructing the expansible anchor () with a tubular basic anchor part (), on which a hollow conical expansion portion () is formed by means of a forming procedure, on which expansion portion () an expansion sleeve () bent out of sheet metal is mounted. As a result of axial displacement of the expansion sleeve () on the expansion portion (), the expansible anchor () becomes anchored in the drilled hole (). The expansible anchor () exhibits subsequent expansion behaviour in the event of widening of the drilled hole (), for example as a consequence of crack formation.

Expansion bolt

The impact-type anchor (1) consists of a metal sleeve (2) provided with a throughgoing passage (3) tapering towards a leading end of the sleeve, into which bore an expander body (5) can be driven to expand the impact-type anchor. The throughgoing passage (3) has a rear cylindrical portion provided with an internal thread (4) as well as a tapering portion. So that the metal sleeve can be inexpensively manufactured while providing pull-out values that are the same as those of a metal sleeve made of solid material, the metal sleeve is stamped out of a sheet metal blank and then rolled up to form a sleeve which is joined at its seam. Furthermore, in order to form the tapering internal bore the expandable legs (7) have a first section (7a) that is bent inwards and a second section (7b) that is bent onto the outer face of the first section. The two sections (7a, 7b) resting one against the other are connected non-displaceably to one another, for example, by means of a punched point (9).

Impact-type anchor

The anchoring rod for anchoring an article to a base using a compounded mass including a synthetic resin, has a threaded portion at its rear end for fixing the article; a threaded nut engagable on the threaded portion for applying a mounting torque; a head having a shoulder facing toward the rear end, an outer surface tapering towards the front end of the anchoring rod and having a wedge-like tip at the front end; a conical portion connecting the head and the threaded portion and tapering toward the head; and a resilient annular washer bearing on the shoulder of the head.

Anchoring rod for anchoring an article to a base using a synthetic resin

Growing community of inventors

Waldachtal, Germany

Rainer Mallee