Fischerwerke Artur Fischer Gmbh & Co Kg

Fischerwerke Artur Fischer

Fischerwerke Gmbh & Co. Kg

Rainer Fischer

Willi Haug

Jochen Kaupp

An expansible fixing plug ( ) has an expansion screw ( ), which is located in an expansible fixing plug sleeve ( ). In accordance with the invention, a screw thread ( ) is of saw tooth construction and a rear part ( ) of the fixing plug sleeve ( ) is axially extendable. When the expansible fixing plug ( ) is subjected to axial loading the expansion screw ( ) moves axially in the fixing plug sleeve ( ) and the screw thread ( ) expands the fixing plug sleeve ( ). The expansible fixing plug ( ) therefore has a subsequent-expansion behavior when a drilled hole becomes enlarged. The expansible fixing plug ( ) can be mounted by hammering in without turning the expansion screw ( ). The core diameter of the screw thread ( ) enlarges from the front to the rear to increase the capacity of the expansion screw ( ) to withstand transverse loading.

Expansion anchor

The invention relates to a push-in plug (,) made from plastics and having at least one shank (,) to be introduced into a drilled hole, on which shank (,) there are located expansion segments (,) lying opposite one another in pairs, which are braced against and wedge against the wall of the drilled hole when a tensile force acts on the shank (,). For improvement of the holding force, the expansion segment (,) is formed by a wedge element (,), which is held on the outer surface (,) of the shank (,) so as to be axially displaceable and which is displaced, when the push-in plug (,) is pushed into the drilled hole, into a position lying in front of an inclined surface (,) formed on the shank (,), which inclined surface (,) rises towards the insertion end (,) of the push-in plug (,).

Push-in plug

A device for installing an impact-type anchoring unit having an expansion sleeve with an internal bore tapering in a forward region and threaded in a rearward region and an expansion body adapted to be driven into the expansion sleeve by an impact tool having a rod, the device comprising a body part having a stop flange adapted to abut against an object in which the impact-type anchoring unit is to be installed, the body part also having a threaded portion located adjacent to the stop flange and screwable in the threaded rearward portion of the internal bore of the sleeve, the body part also having a through going internal bore with a diameter adapted to be larger than the rod of the impact tool.

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Waldachtal, Germany

Rainer Fischer