Hilti Aktiengesellschaft

Peter Mugg

Till Cramer

Thomas Merhar

Hanspeter Schad

Klaus-Peter Bohn

Peter Hertlein

Sven Matthiesen

Steven Moseley

Michael Baumgartner

Matthias Schaefer

Franz Rass

Frank Rieger

Peter Woergartner

Luis Fernando Garcia

Alfred Lammer

Reinhard Bertsch

Matthias Schäfer

Stefanie Tschegg

Herwig Mayer

Bernd Zettl

A fastening device () for mounting on a mounting rail () having a rear-engagement member () which is configured to be introduced into the mounting opening () and to engage behind the rims () of the mounting opening () of the mounting rail (); including a tensioning device () which cooperates with the rear-engagement member () and has a longitudinal axis, for clamping the fastening device () to the mounting rail (); including a contact plate () for resting on the outside of the mounting rail () that has a feed-through opening for a part of the tensioning device (); and a spring element () configured between the contact plate () and the rear-engagement member () for preloading the rear-engagement member () circumferentially with respect to the longitudinal axis () of the tensioning device (); including a holding device () between the rear-engagement member () and the contact plate () for holding the rear-engagement member () in the preloaded position; upon release of the holding device (), the rear-engagement member () being movable by the spring element () from the insertion position to a rear-engagement position where it engages behind the rims () of the mounting opening (). One stop element () having a stop face for limiting the capacity of the rear-engagement member () for twisting rotation is provided on the contact plate ().

Fastening device for mounting on a mounting rail

A chiplessly thread-forming screw has a stem () at one end of which a tip () is provided and at another end of which a head () is provided, and which has a pointed conical section () extending from the tip () in a direction of the head (), a cylindrical section () arranged between the first pointed section () and the head (), a first cambered section () adjoining the pointed conical section () in the direction of the head, and a second cambered section () arranged between the first cambered section () and the cylindrical section () and an outer surface () of which has a second curvature radius (R) unequal to the first curvature radius (R) of the outer surface () of the first cambered section ().

Chiplessly thread-forming screw

The invention relates to a fastener () for arranging a rod element () on a mounting channel, said fastener () including an engaging part () that can be inserted and made to engage behind edges () of an installation opening of the mounting channel, whereby the engaging part () has an opening () with an internal thread for the rod element, a stop plate () for making contact on the outside of the mounting channel having a hole () through which the rod element () passes, and flexible connection elements () that connect the engaging part () to the stop plate () at a distance from each other. Moreover, a nut element () that has a hole () with an internal thread and that serves to secure the rod element () to the mounting channel can be rotatably held on the stop plate () using a holding device ().

Fastener for arranging a rod element on a mounting channel

A segmental hard material insert for a working tool has a planar polycrystalline diamond layer () having, in its layer plane, a main cutting element () and a contact edge () located opposite the main cutting element, with the main cutting element () having two, facing outwardly, convex cutting sections () and a smooth, facing outwardly, concave transitional region () connecting the two convex cutting sections (), and with the apex () of the transitional region () being located on a central line of the main cutting element ().

Hard material insert and core bit

A concrete drill for a rotary and percussively driven hand tool machine with a cutting part () and a striking part () that is axially and limited displaceable relative to the cutting part (). Each of the cutting part () and the striking part () have a respective facial surface work area for machining a bore hole surface. The respective facial surface work area of the cutting part () and the striking part () radially overlap upon rotation of the concrete drill.

Concrete drill

Growing community of inventors

Nueziders, Austria

Peter Mugg