Hilti Aktiengesellschaft

Mathias Goldt

Marc Schaeffer

Michael Selb

Sascha Dierker

Arjen Detmer Dijkhuis

Joerg Appl

Andreas Eckstein

Georg Oberndorfer

Matthias Paetow

Leo Gao

Marc Schäffer

Jörg Appl

A fastener, includes a first clip member having a first base portion and two first arm portions that extend upwardly from two sides of the first base portion, a second clip member locked with the first clip member and having a second base portion and two second arm portions that extend upwardly from two sides of the second base portion, and at least one hook portion extending from a distal end of one of the first and second arm portions, wherein the first and second clip members are arranged horizontally along two different directions, the second base portion is positioned on the first base portion.

Fastener

An expansion bolt including an anchor bolt having an expansion section, and further including an expansion sleeve which surrounds the anchor bolt and which can be expanded by retracting the expansion section, and a spring element arranged on the anchor bolt. The spring element can be tensioned by inserting the anchor bolt into a bore hole and can retract the expansion section of the anchor bolt into the expansion sleeve when it is released. An indicator element indicates when a rated tension of the spring element is reached.

Expansion bolt

A sensor arrangement, for example, on an anchor bolt, including at least one sensor (). At least one bypass element () with a dilatant material is arranged in the area of the sensor (), whereby impact forces that act upon the sensor () can be dissipated via the dilatant material of the bypass element ().

Sensor arrangement, for example, on an anchor bolt

A direct tension indicator (), including a base element () and a cover element () that is arranged on the base element () and at least one indicator element () that is arranged between the base element () and the cover element () in order to display an axial force acting between the base element and the cover element. The indicator element () includes a dilatant material.

Load-indicating washer

One or more embodiments of the present invention relate to a torque-limited attachment device, having a first head piece with at least one shaped element for the purpose of establishing a positive-fit connection to an attachment tool, and having a second head piece which has at least one threading, wherein both head pieces are connected to each other, forming at least one predetermined breaking point which breaks at a limit torque between the two head pieces such that a first breakaway surface, the same being functionally assigned to the first head piece, and a second breakaway surface, the same being functionally assigned to the second head piece, are created, and wherein at least the second head piece has a base material inside, the same having a corrosion-resistant surface coating.

Growing community of inventors

Feldkirch, Austria

Mathias Goldt