Hilti Aktiengesellschaft

Hilti Aktiengessellschaft

Hans-Werner Bongers-Ambrosius

Werner Kleine

Martin Richter

Ferdinand Kristen

Konrad Artmann

Jens Frenzel

Udo Hauptmann

Reinhard Schulz

Maximilian Stock

Helmut Nussrainer

Jorg Eichhorn

Franz Popp

Roland Schaer

Josef Obermeier

Walter Wissmach

Werner Kaibach

Rory Britz

Hanspeter Schad

Werner Britten

Peter Gerold

Harald Schmitzer

Rainer Batliner

David Hruza

Peter Hellmann

Harald Geiger

Anton Knoller

Edwin Schweizer

Ralf Ludwig

Tim Pr&ouml;ls

Hans B&ouml;ni

Dietmar Sartor

Boris Koller

Ralph Neuh&auml;user

Oliver Muhr

Erwin Reisinger

Josef Schitti

Richter Martin

A shank for a rotary and percussive tool has a locking groove () arranged between two guided regions () and axially closed at its opposite ends for receiving at least one radially displaceable and axially displaceable, within predetermined limits, locking member () of a chuck in which the shank is received, with the guide dimension (F) of the guide region being smaller than the width (B) of the axial region (A) of the locking groove () and that includes the radial extent of an entrain strip () provided in that region (A), and greater than the thickness (D) of the axial region measured in a direction transverse to the width measurement direction.

Shank for a rotary and/or percussive tool

An electric hand tool apparatus () for driving a drill-like tool, which carries out an at least partial rotational movement, has within a housing (), an electric motor () without or free of collector and slip ring, the rpm of which can be controlled by motor control electronics (), wherein an rpm-dependent clutch () for transferring the torque is disposed in a force transfer path from the electric motor () to a transmission (). Optionally, to prevent an excessively high twisting of the housing (), a sensor () is evaluated and the rpm of the electric motor () is reduced in order to sever the transfer of force by the rpm-dependent clutch ().

Rotating electric hand tool implement with safety routine

An electrical hand held tool for producing at least a percussion movement of a working tool includes an electrical drive, a first, oscillating subassembly including a percussion mechanism () and a rotor () of the electrical drive for transmitting torque to the percussion mechanism and rotatable about a rotor axis (B) extending parallel to an oscillation path (I) of the first subassembly, and a second subassembly including a housing () in which the first subassembly is supported for a limited oscillating movement along a tool axis (A).

Percussion electrical hand-held tool

A percussion electrical tool including an electrical motor ( ) located in a firedamp-protected housing ( ), control electronics ( ) for controlling operation of the electric motor ( ); an inverted rectifier ( ) connecting the control electronics ( ) with the electric motor ( ); an electronic module ( ) located in the housing ( ); an intermediate wall ( ) for separating the electronic module ( ) from a portion of a housing volume in which the electric motor ( ) is located, connected with the inverted rectifier in a heat-conductive manner, and having a fluid-cooled cooling medium conduit.

Rotary-percussion electrical tool

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 rock drilling tool including a tip ( ) formed of a hard material and provided at one end of the tool stem and a shank ( ) provided at an opposite end of the stem ( ) and having a plurality of entrain grooves ( ) extending up to a free end surface of the shank ( ), with an entire recessed surface ( ) of an entrain groove ( ) being larger than an entire outer surface ( ) of a groove-forming rest web ( ), and with a mean rest cross-sectional area (A&prime;), which is measured within an axial section of the drilling tool having a length at least equal to a product of a natural logarithm base and a stem diameter (e&times;D), deviating from a mean rest cross sectional area (A) along the entire tool length maximum by 20%.

Rock drilling tool

A twist drill bit ( ) for use in rock has a helical land ( ) arranged between a chuck insert end ( ) and a tool head ( ), and extends helically around a rotational axis (A) extending along a shaft ( ). The radially outer surface ( ) of the land ( ) has its width (x) increasing as it approaches the tool head ( ).

Twist drill bit for rock drilling

A rock drill including a drilling rod ( ), a cup-shaped drilling head ( ) secured to the drilling rod ( ) at one of its ends, and connection elements including at least one radially projecting, entraining web ( ) associated with the drilling rod ( ) and received in at least one axially extending entrain slot ( ) which is formed in an entrain surface of the cup-shaped drilling head ( ) for securing the drilling head ( ) to the drilling rod ( ) for joint rotation therewith and for a limited axial displacement relative thereto.

Rock drill

A helical drill bit ( ) for rock has an axially extending shank ( ) located between a chuck insert end ( ) and an opposite drilling head ( ) with at least one axially extending helical discharge groove ( ) extending radially inwardly from the outer circumferential surface of the shank. A radially projecting groove reinforcement ( ) is arranged in the base of the radial groove ( ), with the reinforcement changing its geometric form or its position within the discharge groove ( ) along the discharge groove ( ).

Twist-drill bit

A safety clutch for an electric hand-held tool and including a rotor ( ), an anchor disc ( ) frictionally engageable with the rotor ( ) for transmitting a torque there-between, a stationary axial stop ( ) for limiting the air gap (s) between the rotor and the anchor disc and engageable by the anchor disc under an axial reserved pre-stress applied to the anchor disc (g); and a stationary electromagnetic coil ( ) provided on a side of the rotor ( ) remote from the anchor disc ( ) and coaxial with the rotor ( ) for generating a rotationally symmetrical magnetic flux (&phgr;) for attracting of the anchor disc (g) to magnetic poles ( ) associated with the rotor ( ).

Safety clutch for electrical hand-held tool

The method of and a device for using this method, on equipment or assigned to equipment for working a material, for investigating and identifying the nature of the material, which is to be worked and for making available at least one operating parameter for the optimized pre-setting of the working equipment, provides for the use of a sensor, preferably assigned directly to the working tool, such as a hammer drill, in order to detect shock waves generated or induced in the tool. From the shock wave signal measured, at least one distinguishing feature characteristic of the material to be worked, is extracted and evaluated for the comparative classification of the material by means of an algorithm. Preferably, an external force, especially the contacting force, acting on the working equipment, is taken into consideration for the algorithmic evaluation.

Method and device for investigating and identifying the nature of a material

A suction module for an electrical hand-held power too land including a housing ( ) at least partially receivable in the battery-receiving chamber ( ) of the power tool ( ) in the power tool, electrical conductors ( ) for connecting the module housing ( ) with a power source ( ), battery contacts ( ) for electrically connecting the module housing with the power tool ( ), an aspirator ( ) having a drive motor ( ) for producing vacuum and located in the module housing ( ), with the aspirator ( ) being connectable with a suction head ( ) arrangeable in a region of a working tool.

Suction module

A percussion rotary hand-held power tool including a percussion piston ( ), an anvil ( ), a chuck ( ) for receiving a working tool, an axially displaceable and rotatable guide tube ( ) located in the housing ( ) and extending in a telescopic-like manner over the chuck ( ) and the anvil ( ) from a chuck region up to a region of the percussion piston ( ), and a sealing element ( ) located between the guide tube ( ) and the housing ( ) and having at least one axial seal ( ) for performing only axial movement and at least one rotary shaft seal ( ) for performing only rotary movement.

Percussion rotary hand-held power tool with a rotatable guide tube

An electrical hand operated tool driving device ( ), such as a hammer drill, a combination hammer or a chipping hammer, has an electropneumatic striking mechanism ( ), for which a cooling medium ( ), for cooling the striking mechanism ( ), flows through a liquid-tight cooling medium duct ( ), which is disposed in a housing ( ) of the tool driving device ( ).

Electrical hand operated tool driving device with an electropneumatic striking mechanism

A tool for drilling and/or chiseling for use with a hand-held mechanized tool having a suction device ( ) including a housing ( ) surrounding the tool ( ), with the tool ( ) including a tubular shaft ( ) and a connection member ( ) located opposite a front end of the shaft ( ) for connecting the shaft ( ) with the housing ( ) of the suction device ( ) and having a diameter larger than a diameter of the shaft ( ), and with the connection member ( ) being formed of a core ( ) surrounding the shaft ( ), and an adapter ( ) surrounding the connection member core ( ) and having a cross-bore ( ) opening into the through-channel ( ) formed in the shaft ( ).

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Munich, Germany

Hans-Werner Bongers-Ambrosius