Abstract: A portable device having an overload protection device for motor-operated tools has a drive motor, a drive shaft connected to the drive motor and driven in rotation by the drive motor, and an output shaft for driving a cutting tool, wherein the output shaft is arranged substantially perpendicularly to the drive shaft. A drive pinion is connected to the drive shaft. A drum is supported on the output shaft and driven in rotation by the drive pinion. A coupling is arranged between the drum and the output shaft and engages the drum. The coupling is connected to the output shaft. When the output shaft is blocked, the coupling effects an automatic decoupling between the drum and the output shaft in order to prevent overloading of the drive motor.

Abstract: A tool has a tool insert and an electrically operated drive unit oscillatingly driving the tool insert. The drive unit has a piezo actuator and an adjusting travel enlarger coupled to the piezo actuator. The adjusting travel enlarger has a master piston, at least one slave piston, and at least one pressure chamber. The master piston acts through the at least one pressure chamber on the at least one slave piston. The piezo actuator and the master piston are fixedly connected to one another.

Abstract: A clamping device has a hexagon receptacle for receiving hexagon bits inserted in an axial direction of the hexagon receptacle. A radially movable locking element is provided for engaging a locking recess of an inserted hexagon bit. The locking element has a rest position and projects in the rest position radially inwardly into the hexagon receptacle. A locking sleeve surrounds the hexagon receptacle in an initial position and has a cylindrical securing wall. The securing wall radially secures the locking element in the rest position. The locking element is axially moveable within the hexagon receptacle into a receiving position in which radial deflection of the locking element is enabled.

Abstract: A shaft locking device for a motor-driven, hand-guided work tool spindle has a driven member fixedly connected thereto, a freewheel with locking members, a ring fixedly connected to the housing and engaged by the locking members in both rotating directions, a drive member coaxially arranged to the spindle with unlocking members cooperating with locking members releasing when the driving member is engaged, thereby releasing the driven member from the ring. Drive member cams are spatially separated from unlocking members wherein they penetrate the locking member. Driven members have catch openings such that both drive and driven members also have torque-transmitting catch surfaces for a motor-driven action of the spindle so that the catch surfaces have a larger distance from one another in a neutral position of the drive member than between the unlocking members and the locking members.

Abstract: A switchable gearbox of a handheld power tool has a gear having a first switching stage and a second switching stage arranged sequentially in an axial direction of the gear, wherein the gear comprises a gear arrangement movable in the axial direction of the gear between the first and second switching stages. An actuator is rotatable about an axis parallel to the axial direction of the gear. At least one shifting gate is rotatable together with the actuator wherein the shifting gate interacts with the gear arrangement for moving the gear arrangement in the axial direction. The shifting gate has a central area extending linearly and at a slant relative to a circumferential direction of the gear and end sections on each end of the central area, wherein the end sections extend parallel to the circumferential direction.

Abstract: A portable device having an overload protection device for motor-operated tools has a drive motor, a drive shaft connected to the drive motor and driven in rotation by the drive motor, and an output shaft for driving a cutting tool, wherein the output shaft is arranged substantially perpendicularly to the drive shaft. A drive pinion is connected to the drive shaft. A drum is supported on the output shaft and driven in rotation by the drive pinion. A coupling is arranged between the drum and the output shaft and engages the drum. The coupling is connected to the output shaft. When the output shaft is blocked, the coupling effects an automatic decoupling between the drum and the output shaft in order to prevent overloading of the drive motor.

Abstract: A tool has a tool insert and an electrically operated drive unit oscillatingly driving the tool insert. The drive unit has a piezo actuator and an adjusting travel enlarger coupled to the piezo actuator. The adjusting travel enlarger has a master piston, at least one slave piston, and at least one pressure chamber. The master piston acts through the at least one pressure chamber on the at least one slave piston. The piezo actuator and the master piston are fixedly connected to one another.

Abstract: A stacking tool case vertically stackable with additional stacking tool cases having an identical configuration has a shell-shaped bottom part having an opening facing in an upward vertical direction. A cover closes the opening. The bottom part has stacking posts extending in the upward vertical direction, wherein the cover in a closed state of the tool case is arranged between the stacking posts. The stacking posts support a bottom part of a stacking tool case placed on top.

Abstract: A portable tool such as a chisel hammer or drill hammer has a receptacle for receiving a tool insert. A hammer member drives percussively the tool insert received in the receptacle. The hammer member is movable in the direction of the longitudinal axis of the tool insert. The hammer member has a greater mass than a same-size reference hammer member of steel. The mass of the hammer member is at least 140 percent greater than that of the reference hammer member.

Abstract: A clamping device has a hexagon receptacle for receiving hexagon bits inserted in an axial direction of the hexagon receptacle. A radially movable locking element is provided for engaging a locking recess of an inserted hexagon bit. The locking element has a rest position and projects in the rest position radially inwardly into the hexagon receptacle. A locking sleeve surrounds the hexagon receptacle in an initial position and has a cylindrical securing wall. The securing wall radially secures the locking element in the rest position. The locking element is axially moveable within the hexagon receptacle into a receiving position in which radial deflection of the locking element is enabled.

Abstract: A switchable gearbox of a handheld power tool has a gear having a first switching stage and a second switching stage arranged sequentially in an axial direction of the gear, wherein the gear comprises a gear arrangement movable in the axial direction of the gear between the first and second switching stages. An actuator is rotatable about an axis parallel to the axial direction of the gear. At least one shifting gate is rotatable together with the actuator wherein the shifting gate interacts with the gear arrangement for moving the gear arrangement in the axial direction. The shifting gate has a central area extending linearly and at a slant relative to a circumferential direction of the gear and end sections on each end of the central area, wherein the end sections extend parallel to the circumferential direction.

Abstract: A battery pack for an electric power tool has a protective housing and battery cells received in the protective housing. The protective housing has a first housing side provided with a receiving shoe for mechanical attachment to a free end of the power tool handle. The receiving shoe has electrical contacts for connecting to electrical lines of the drive motor of the power tool. The protective housing has a second housing side providing a support surface extending substantially in a direction of the longitudinal center axis of the tool housing. The battery cells in the protective housing are arranged in the longitudinal direction behind one another in at least one row. At least one of the battery cells is displaced laterally such that a displaced row portion is formed and the support surface has a widened support surface portion transversely to the longitudinal center axis of the tool housing.

Abstract: A stacking tool case vertically stackable with additional stacking tool cases having an identical configuration has a shell-shaped bottom part having an opening facing in an upward vertical direction. A cover closes the opening. The bottom part has stacking posts extending in the upward vertical direction, wherein the cover in a closed state of the tool case is arranged between the stacking posts. The stacking posts support a bottom part of a stacking tool case placed on top.