Hilti Aktiengesellschaft

Hilti Akitengesellschaft

Juergen Gebhard

Christoph Wiedner

Simon Oppeneiger

Marc Schaeffer

Ulrich Birnbaum

Kay Heemann

Fritz Hermann

Corinna Achleitner

Markus Heudorfer

Georg Oberndorfer

Denis Novokshanov

Frank Bertram

Frank Jackel

Michael Splitt

Mirco Fleige

Vincent De Groof

Frederik Korte

Juergen Boeckle

Erwin Karle

Harald Schachinger

Erich Spreizer

A fastener includes an anchor bolt and a nut. The nut has a nut hole and an internal thread. The anchor bolt has an anchor portion and a threaded rod that has an external thread and that is connected to the anchor portion. The nut is arranged on the threaded rod and the internal thread of the nut threadedly engages the external thread of the threaded rod. The nut has a rearward nut section, a forward nut section, and an outside shoulder for load transfer into the nut which is located between the forward nut section and the rearward nut section and which faces the anchor portion of the anchor bolt. The internal thread of the nut extends at least in the forward nut section and threadedly engages the external thread of the threaded rod at least in the forward nut section.

Fastener and fastening arrangement including nut with load transfer shoulder

A rolling die for forming a screw thread on a screw blank is disclosed. The rolling die has a plurality of grooves, where the grooves each have two flanks as seen in cross-section. At least a portion of each of the grooves has a forming area in which the size of a profile angle enclosed by the flanks decreases continuously along the grooves.

Rolling die

A cold rolling method for manufacturing a profile () from a one-piece rolling stock in form of initial material () with a plurality of rolls () each having a deforming region () for deforming the initial material () includes bending the initial material () with formation at least one folded section () extending in a rolling direction of the initial material (), and deforming the initial material () in its width direction with reduction of its thickness at least in one region.

Cold rolling method for manufacturing a profile

The present invention relates to a cast-in channel having a channel body which forms a receiving space for receiving a connecting element used to fixedly attach a fastening element to the cast-in channel, the channel body further being provided with holes, the holes having connectors provided therein for fixedly attaching anchoring members to the channel body. The connectors are designed as rivets, whose fixing portions, which are inserted through the respective holes, are expanded so as to secure the rivets to the channel body, and which have an attachment for fixedly attaching the anchoring members to the channel body. The present invention also relates to a rivet nut for a cast-in channel.

Cast-in channel

A fastening element has a shaft (), and a tapping thread () carried by the shaft () and having at least one screw thread () a section () of which that adjoins the thread pilot (), having a plurality of following one another thread steps () having different cross-sections, with a cross-section of the at least one screw thread () decreasing stepwise toward the thread pilot () from a thread step () to a thread step (), with the thread steps () having respective cutting edge-forming end surfaces () aligned, at least partially, in a direction of the thread pilot ().

Fastening element

Growing community of inventors

Buchs, Switzerland

Juergen Gebhard