Hilti Aktiengesellschaft

J&uuml;rgen Wieser

Heinz Bisping

Claudia Zimmerer

Kai-Uwe Keller

Marcel John

Erich Daigeler

Alois K&ouml;lbl

Alois Koelbl

A method of manufacturing of an expansion sleeve including providing a sleeve blank having axially extending material weaknesses ( ), and forming the longitudinal slots ( ) by tearing open the material weaknesses ( ) by substantially radially expanding same.

Method of manufacturing an expansion sleeve

An expansion dowel having a cylindrical expansion body ( ) having a through-bore ( ) and formed of at least two segments ( ) connected with each other, an additional expansion element ( ) located in a recess ( ) formed in an outer profile ( ) of the expansion member ( ) and having a radial depth of the recess ( ) diminishing in a setting direction (S) of the expansion dowel; the additional expansion element ( ) having a radial extent at least partially greater than a maximal dept of the recess ( ).

Expansion dowel

An anchor bolt having a substantially cylindrical stem ( ), and at least one thread provided on the stem ( ) and extending from a free front end of the stem at least over a portion of a longitudinal extent of the stem ( ), the thread ( ) having a plurality of thread turns ( ) having, at least over one/third of the stem ( ), a width (b , b ) which decreases, with an increase of a distance of a respective thread turn ( ) from the free front end of the stem ( ), so that a distance (x , x , x ) between trailing and leading flanks ( ) of two following one another thread turns ( ) of the thread increases backwards.

Anchor bolt with an outer thread having thread turns with different cross-sectional shape

An expansion dowel has an expansion sleeve ( ) insertable into an axially extending dowel body ( ) which has a central through opening ( ) and a collar ( ). The leading end region ( ) of the dowel body ( ) in the setting direction (S) has an internal thread ( ) acting as a load application means, and the oppositely located, trailing end region ( ) has at least one axially extending slit ( ), and serves to receive the expansion sleeve ( ). Due to the fact that there is at least one joint arranged in the leading end region ( ) of the dowel body ( ) adjoining the internal thread ( ), a threaded rod ( ) can be inserted up to the desired position in the through opening ( ) by a slight axial pressure in the setting direction (S).

Dowel with a weakened section adjoining the leading threaded end thereof

An attachment element for an anchor rod ( ) including a substantially cylindrical expansion member ( ) having an axial bore ( ), and one-piece expandable member ( ) extending, at least partially, into the axial bore ( ) of the expansion member ( ) without a possibility of disengagement from the expansion member ( ) and having, at least along a portion of its longitudinal extent, a conical section tapering in a direction opposite to a setting direction (S) of the anchor rod ( ), an axial bore ( ), and at least two elongate slots ( ).

Growing community of inventors

Kaufering, Germany

Jürgen Wieser

Growing community of inventors

Kaufering, Germany

J&uuml;rgen Wieser

Jürgen Wieser