Robert Boschgmbh

Manfred Hellbach

Gerhard Meixner

Karl Frauhammer

Heinz Schnerring

Andreas Strasser

Frank Mueller

Joerg Friedrich

Karl Wanner

Juergen Lennartz

Michael Mayer

Ludwig Thome

Hubert Steinke

Werner Huser

Ulrich Ranger

Manfred Klein

Karsten Blaier

Johann Kaltenecker

A chuck is described, in particular for a hammer drill or chisel hammer, having a chuck body having an insertion opening for holding a tool shank, and a locking element for axially locking the tool shank in the insertion opening, the locking element being movable between a locked position and an unlocked position, and having an arresting pin, mounted in the locking element and radially displaceable between an arresting position and a release position, which axially arrests the locking element in its arresting position and axially releases it in its release position.

Chuck

A hand-operated power tool has a housing with a drive mechanism for driving a tool, a tool receptacle for receiving a tool, a handle assembly for grasping and handling located in a rear region which is remote from the tool receptacle and engaging the housing, wherein the handle assembly is vibration-damped with respect to the housing with components contained in the housing, at least and substantially in an axial direction.

Power tool with a rotating and/or hammering drive mechanism

A tool bit holder for a hand power tool has a tool bit holder body has a receiving bore for a tool bit shaft of a tool bit insert with at least one recess, a locking body snappable into place with the recess of the tool bit shaft and supported radially displaceably in the tool bit holder body; a slide sleeve supported resiliently in an axial direction and operatively connected to the locking body so that upon a motion of the slide sleeve counter to a spring force the locking body escapes out of the receiving bore, and a guide ring, wherein the locking body is caught in a first opening of the tool bit holder body and in a second opening at least partially covering the first opening, of the guide ring supported displaceably on the tool bit holder body.

Tool bit holder and hand power tool

A snap ring for shafts or bores is proposed, which is able to be axially fixed in position by snapping into place in a circumferential groove. The snap ring is provided with a centering ring which, when the case of the snap ring is installed in the circumferential groove, extends with radial clearance to an annular clip of the snap ring, which is disposed approximately concentrically to the circumferential groove.

Circlip

A hand held power tool formed as a hammer drill has a strikingly drivable tool holder having a base body, at least one locking body with which the base body is form-lockingly connectable and through which the base body is fixable in a rotary direction in at least two positions, the locking body being formed as a ring-shaped component.

Hand held power tool

The machine tool, especially a hammer drill or chisel, has a rotatable and/or axially movable tool holder ( ) for a tool ( ) having a grooved shaft. The tool holder ( ) includes a base body ( ); two radially movable locking bodies ( ) held in the base body and movable into respective locking positions engaged in two closed grooves ( ) in the tool shaft; a bearing member ( ) movable between a bearing position for holding the locking bodies ( ) in the locking position and a releasing position in which the locking bodies are movable out of the grooves; an operating member ( ) connected with the bearing member ( ) for moving the bearing member ( ) and a resilient plastic guiding member ( ) arranged to guide the locking bodies ( ) radially outward during motion from the locking to unlocking position and to act on the locking bodies ( ) with a radially inwardly directed spring force.

Machine tool, especially a hammer drill or chisel

A hand power tool has a machine housing, a drive motor accommodated in the machine housing, a drive train connected with the drive motor and provided with a tool receptacle for rotation of a tool insertable in the tool receptacle, a detecting device for detecting an uncontrolled operation of the hand power tool by detecting a blocking of the tool in a workpiece with a resulting impact-like turning of the machine housing, a blocking device provided for the drive train and releasable by the detecting device, the locking device having a locking toothing arranged in the drive train and a blocking member movably supported in the machine housing and form-lockingly engagable in the locking toothing so as to non-rotatably fix the drive train relative to the machine housing, the detecting device being formed so that it produces an electrical release signal in an uncontrolled operation, the blocking device being releasable by the electrical release signal, and further has electromagnet device actuatable by the release signal so that the locking member is engagable by the electromagnet device into the locking toothing.

Growing community of inventors

Leinfelden-Echterdingen, Germany

Manfred Hellbach