Robert Boschgmbh

Otto Baumann

Hardy Schmid

Dietmar Saur

Rolf Mueller

Michael Weiss

Wilbert Reibetanz

Helmut Lebisch

Tobias Herr

Karl Wanner

Andre Ullrich

Siegfried Fehrle

Thomas Bernhardt

Sven Kageler

Holger Ruebsaamen

Hans-Peter Dohse

Gerhard Meixner

Uwe Engelfried

Karl Frauhammer

Willy Braun

Ralph Dammertz

Axel Kuhnle

Ulrich Bohne

Juergen Lennartz

Heinz Schnerring

Aldo Di Nicolantonio

Karl Seitz

Manfred Buck

Frank Mueller

Christian Wiedemann

Jan Koalick

Helmut Heinzelmann

Kurt Sieber

Herbert Wiesner

Rolf Muller

Holger Frank

Juergen Bochert

Richard Engel

Roger Hahn

Ernst Angermair

Elisabeth Michl

Winfried Habel

Thomas Berndhardt

Bernd Ruckh

Dietmar Spiwokz

Joerg Kriedel

Mario Patzig

Werner Renz

Daniela Hossmann

Peter Jordan

A hand-held power tool, particularly a hammer drill, includes a work spindle, a hand-held power tool housing and an intermediate shaft, which is arranged in parallel to the work spindle and mounted in an axially displaceable manner for changing the operational mode, and a tooth sleeve, which is provided to transfer a torque to the intermediate shaft. The tooth sleeve is fixed in the axial direction by means of the hand-held power tool housing.

Hand-held power tool

A hand-held power tool, in particular an impact driver, an impact drill, or a rotary hammer, is proposed, which has a drive unit and/or output with at least one line of action, which produces at least oscillations along the line of action. In order to reduce these oscillations, the hand-held power tool is equipped with at least one vibration absorber unit. The vibration absorber unit has at least one mobile vibration absorbing element, which has at least one degree of freedom of movement. This degree of freedom of movement encloses at least one angle not equal to zero with the line of action.

Hand-held power tool, particularly a rotary and/or chisel hammer, having a vibration absorbing unit

The invention relates to a hand-held machine tool, particularly to a drill hammer and/or chisel hammer, having a hand-held machine tool housing and a transmission chamber with at least one transmission element arranged inside the hand-held machine tool housing. According to the invention, the hand-held machine tool includes a pressure equalization unit, provided for equalizing pressure in the transmission housing and serving at least partially for supporting the transmission element.

The invention relates to a hand-held power tool for predominantly percussively driven tool attachments, in particular hammer drills and/or chisel-action hammers. The power tool includes a percussion axis and an intermediate shaft that is parallel to the percussion axis in which a first stroke generating device having a first stroke element for a percussion drive is arranged in or on the intermediate shaft and can be driven by the intermediate shaft. Additionally, at least one other second stroke generating device having at least one second stroke element is provided for driving a counter oscillator. A phase displacement that is different from zero and that is unequal to 180&#xb0; takes place between a movement of the first stroke element and a movement of at least one second stroke element.

Hand-held power tool for percussively driven tool attachments

The invention relates to a system for a hand-held machine tool, particularly a pistol-shaped hand-held machine tool, which includes at least one first auxiliary unit, and a coupling mechanism that is used for coupling the first auxiliary unit and the hand-held machine tool. An example of the invention includes a suction unit as the first auxiliary unit for collecting debris from a hand-held drilling tool. The system also provides for at least one additional auxiliary unit to be coupled to the held-held power tool by the coupling mechanism. An example of the invention includes an illuminating element as an additional auxiliary unit which can be coupled to the tool with the coupling mechanism so as to be interchangeable with the first auxiliary unit.

System with a hand-held power tool

The invention relates to a hand-held power tool for predominantly percussively driven tool attachments, in particular hammer drills and/or a chisel-action hammers. The power tool has a percussion axis and an intermediate shaft that is parallel to the percussion axis and which has a first stroke generating device having a first stroke element for a percussion drive. Additionally, at least one additional second stroke generating device having at least one second stroke element is provided for driving a counter oscillator that is arranged on or about the intermediate shaft and can be driven by the intermediate shaft. A phase displacement that is different from zero and that is unequal to 180&#xb0; takes place between a movement of the first stroke element and a movement of at least one second stroke element.

The invention relates to a hand-held tool, in particular a rotary hammer, a percussion hammer, or a sabre saw. The hand-held tool is equipped with a drive unit and a stroke-generating element; the drive unit is embodied to move the stroke-generating element in a reciprocating fashion along a translation axis. The hand-held tool has at least one counterweight; the counterweight is operatively connected to the drive unit in such a way that it is possible to at least partially compensate for forces at least indirectly caused by the reciprocating motion. According to the invention, the counterweight in the hand-held tool is supported so that it is able to move, in particular to reciprocate, coaxial or parallel to the translation axis.

Hand-held tool with a counter-vibration device

The invention is a striking mechanism for a handheld power tools in particular electric hammer. A piston is arranged in an axially bidirectionally movable manner in a guide tube. A striker is provided which acts on a striking pin and which is held in a movable manner in the guide tube. A compression space is delimited by the piston and the striker such that an air cushion is enclosed therein. It is proposed that at least one spring element is provided between the striker and the striking pin.

Striking mechanism for a handheld power tool

A dust filter, in particular, for hand-guided power tools, includes a plate filter () with at least one spreader () for spreading filter folds () of the plate filter (). The spreader () has a spreading device (), which is placed onto sides of the filter folds () of the plate filter () that are oriented away from a sealing frame () of the plate filter ().

Dust filter device

A very easy-to-actuate, replaceable tool fitting is comprised in that at least one movably supported profiled body () on an output spindle () or on the tool fitting () of the hand-held power tool and at least one profiled recess () on the output spindle () or on the tool fitting () are shaped and situated in such a way that when the tool fitting () is slid onto the output spindle (), the at least one profiled body () engages in detent fashion in the at least one profiled recess (), achieving both an axial locking and a rotary driving of the tool fitting () in relation to the output spindle () and means () are provided, which, through a rotating and sliding motion of the tool fitting () on the output spindle (), guide the profiled body () into the profiled recess ().

Hand-held power tool with a replaceable tool fitting

A fitting device for a machine tool has a tool holder for a hand-guided machine tool, for receiving insertion tools. The tool holder forms a releasable sliding fit with a drive tube.

Fitting device for a machine tool with a tool holder, and a tool holder

An electric motor includes carbon brushes () disposed in a holder () that are pressed by means of a spring force () in a radial direction against a jacket face of a cylindrical collector () that is fixed to an armature shaft () of the motor. The holder () for the carbon brushes () can be removed from the motor with little effort as a result of a provision of covering means () that cover a pivot bearing () of the armature shaft () to protect it against the entry of dirt on a side of the covering means () facing the holder () for the carbon brushes (), provided with one or more chamfers () in such a way that the carbon brushes () slide over the covering means () as the holder () is being pulled off and that the carbon brushes () thereby are thrust radially outward counter to the spring force ().

Electric motor with a housing for at least two carbon brushes

The invention is based on a power tool having a beater mechanism () and a coupling device (), which can be engaged and disengaged in order to make and break a drive connection () of the beater mechanism (). It is proposed that the coupling device () has a synchronizing device (), with a detent mechanism () which transmits a drive moment and which in a synchronizing operation has at least two corresponding detent elements (), at least one of the detent elements () being movable about its detent position upon an overlooking moment, counter to the spring force of a spring element ().

Drill or chisel hammer

An electric hand tool is disclosed which has a gt (), received in a housing (), with a gear shaft () and also has at least one radial bearing () for rotary support of the gear shaft (), the inner bearing ring () of the radial bearing being fixed on the gear shaft () and the outer bearing ring () of the radial bearing being fixed in a bearing box () disposed in the housing (), in each case being fixed axially nondisplaceably. For simple assembly of the gt () without tools, the outer bearing ring () of the radial bearing () rests with a sliding seat in the bearing box () and is fixed by means of a clamping bracket () fixed to the bearing box ().

Electric hand tool

The invention is based on an electrical machine with a rotatable brush plate (), which is held in its end positions by means of at least one holding mechanism () that acts in the circumference direction (). The invention proposes that the holding mechanism () have at least one device () that loads the brush plate () in the circumference direction ().

Electric machine and manual machine tool comprising the same

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Leinfelden-Echterdingen, Germany

Otto Baumann