Hilti Aktiengesellschaft

Marcel John

Erich Wisser

Bernhard Sander

Pietro Bianchi

Michael Siemers

Hanspeter Schad

Reinhard Lins

Kai-Uwe Keller

J&uuml;rgen Wieser

Joachim Vedder

Cord-Henrik Surberg

Ralf Laternser

Joachim G&uuml;nther

Charles Coffin

Gerhard K&ouml;ck

Cord-Henrick Surberg

A percussion bores for forming borer in a stone material and including a chisel stem ( ) having a prismatic cross-section and provided with a chiseling head ( ) and at least one radial opening ( ), a twist drill ( ) extending through the cylindrical through-bore ( ) of the chisel stem and projecting beyond the chiseling head ( ), a drilling head ( ) with cutting elements ( ) provided at the projecting end of the twist drill and a shank ( ) provided at another end of the twist drill, and a stop ( ) provided between the shank ( ) and the chisel stem ( ), with a drill stem being offset radially inwardly with respect to an outer diameter of the shank in the region of the stop.

Percussion borer for forming bores in stone material

A fixing member ( ) designed for at least partially interlocking axial securement in a solid body ( ) by means of an initially fluid setting material ( ) introduced into a blind borehole ( ), and is intermediately mechanically fixed and adjustable. The fixing member ( ) is a peripherally closed medium to thickwalled tubular member ( ), at least in part radially deformed and of uniform wall thickness having an axial passageway ( ) extending through it.

Fixing member for use with a setting material

A concrete anchor bolt formed of an axially extending fixing member ( ) having a first axially extending section ( ) fixable in a tapped blind borehole ( ) in a first solid body ( ) secured by a temporarily fluid fixing agent ( ) and an axially protruding second axially extending section ( ) embeddable in a subsequently settable second solid body ( ), wherein a conically shaped section sleeve ( ) is present on the second section ( ).

Concrete anchor bolt

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

Growing community of inventors

Mels, Switzerland

Marcel John