Hilti Aktiengesellschaft

Tim Pr&ouml;ls

Martin Richter

Konrad Artmann

Hans-Werner Bongers-Ambrosius

Udo Hauptmann

Karl-Heinz Hofmann

Josef Starkmann

An assembly for a percussion power tool includes a carrying handle ( ) and a flush head ( ) which is connected with the power tool chuck ( ) for flushing a working tool receivable in the chuck and which has an inlet opening ( ) for a flushing fluid and communicating with the working tool stem ( ), the carrying handle ( ) and the flush head ( ) forming a functional unit.

Carrying handle for a percussion power tool

A support for supporting a power tool ( ) on a displacement carriage ( ) and including an attachment element ( ) for connecting the power tool ( ) with the carriage ( ), and a bolt insertable into an eyelet ( ) of the power tool ( ) for releasably connecting the attachment element ( ) with the power tool ( ) with the bolt ( ) having axial and radial conduits ( ) communicating with an outer cylindrical surface of the bolt ( ), so that predetermined position of the bolt ( ) in the eyelet ( ), a drilling fluid can be delivered through the bolt ( ) to fluid conduits ( ) of the power tool ( ).

Support for supporting a power tool on a displacement carriage

A suction drill unit for the installation of a drill dowel ( ) into rock, concrete, masonry and similar materials has an insertion end ( ) for insertion into an at least partially rotary and percussive acting hand tool drilling device, with a reduced diameter shank ( ) having an open suction passageway ( ) extending axially through the shank ( ) towards a bit head ( ) and a rearward radial communication passage ( ) connected thereto for suction-tight communication with a non-rotary suction head ( ), wherein the drill bit head ( ) is formed with an eccentrically arranged bit head tip ( ) for boring of a hole ( ) having a diameter (D) greater than that of the drill bit head diameter (B).

Suction drill unit for dowel anchorage in rock

A drill including a body having mortises ( ), and a solid hard metal head ( ) having a plurality of bits ( ) and secured to the drill body over the end surface ( ) of the head ( ) and additionally secured to the drill body over portions of side surfaces ( ) of the bits, which are located in a radially outer region of the head ( ), with the side surfaces ( ) extending into mortises and including first surfaces, which are associated with at least some of the bits ( ) and are subjected to pressure acting in a rotational direction of the drill during operation of the drill.

Growing community of inventors

Munich, Germany

Tim Pröls

Growing community of inventors

Munich, Germany

Tim Pr&ouml;ls

Tim Pröls