Hilti Aktiengesellschaft

Uwe Bohn

Wolfgang Ludwig

Kay Heemann

Herbert Ginter

Josef Glogger

Roland Gienau

An anchoring sleeve for anchoring a fastening element in a bore hole of a component by a hardenable compound is disclosed. The anchoring sleeve has a sleeve-like base body with a first end, with a second end, as well as with several axially successive extension sections arranged between the ends which are each configured to be cone-like and their diameter respectively increases in the direction of the first end.

Anchoring sleeve

A drilling tool includes a hydraulically driven device () for advancing a drilling head () in a bore (), and a flow limiter () arranged in a hydraulic conduit () of the advancing device () for adjusting an advancing speed of the drilling head () in the bore (), with the flow limiter () having a pressure-actuated adjusting member () for adjusting flow of a hydraulic fluid in the hydraulic conduit means () in accordance with a flow volume of a rinsing fluid () for rinsing the bore.

Drilling tool and drilling method

A separate drilling head has a distal end which contacts the material to be drilled, and a proximal end which is attached to a drive mechanism. The drive mechanism drives the separate drilling head into the material. The separate drilling head is forcelockingly secured in a thin-walled hollow anchor tube, and the separate drilling head includes a hard metal cutter element, and a substantially axially-oriented, axial stop shoulder at the proximal end that passes into a circumferentially closed, outer cone.

Growing community of inventors

Kissing, Germany

Uwe Bohn