A hand-held power tool, in particular an impact drill, is disclosed. The hand-held power tool includes a housing in which a drive unit for driving an output spindle is arranged. A catch mechanism is associated with the drive unit. The catch mechanism has a first crown disk which is connected to the output spindle for conjoint rotation, and a second crown disk which is arranged in the housing for conjoint rotation. In a first position, the first and second crown disks contact each other via associated catch geometries. In a second position, the second crown disk is arranged spaced apart from the first crown disk along a rotation axis of the output spindle. An annular friction element is arranged without friction in the first position, and generates a specified frictional force between the first and second crown disk in the second position.

A power tool, such as a rotary hammer, includes a housing, an output shaft for mounting a tool accessary and a motor having a motor shaft that generates a rotational output for rotating and linearly hammering the output shaft. The rotational output of the motor shaft is coupled to the output shaft via a driving mechanism that includes a hammer mechanism. An intervening member is axially movable relative to the motor shaft and is operably coupled between the motor shaft and the hammer mechanism. The hammer mechanism and the output shaft are supported by a movable support that is axially movable relative to the housing. Because the output shaft and the driving mechanism are movable relative to the motor and the housing, which preferably includes handle, via the intervening member and the movable support during hammering operations, vibration generated during hammering operations can be dampened before reaching the housing.

A hand-held power tool includes a drive unit configured to drive an insertion tool in at least one non-percussive operating mode. The drive unit includes a percussion mechanism for percussive driving of the insertion tool in an associated percussion mode. The hand-held power tool further include a user guidance unit configured to be actuated by a user and a communication interface configured to communicate with the user guidance unit and to receive, from the user guidance unit, changeover instructions for changing over the drive unit between the at least one non-percussive operating mode and the associated percussion mode in an application-specific manner.

Systems, instruments, and methods for operating a surgical instrument. The methods comprising: receiving at least a portion of an external object in a recess of a hollow shank; rotating a first shaft disposed within the hollow shank; using rotation of the first shaft to cause translational movement of a second shaft of the surgical instrument in a first direction away from the first shaft and along a central axis of the surgical instrument; applying a pushing force on the external object using the second shaft that is experiencing the translational movement; and causing translational movement of the second shaft in a second direction opposed from the first direction after the pushing force has been applied to the external object.

A power tool includes a motor having a motor shaft, a first intermediate shaft, and a second intermediate shaft extending in parallel to the first intermediate shaft. An output shaft removably holds a tool accessory and has a driving axis extending in parallel to the first and second intermediate shafts. A motion-converting mechanism converts rotation of the first intermediate shaft to linearly hammer the tool accessory. A rotation-transmitting mechanism transmits rotation of the second intermediate shaft to rotate the output shaft. A rotational axis of the motor shaft intersects, or is skewed relative to, the driving axis. A pair of first gears, e.g., bevel gears, operably couples the motor shaft to a first one of the first and second intermediate shafts. A pair of second gears operably couples the first one of the first and second intermediate shafts to a second one of the first and second intermediate shafts.

A power tool includes a motor having a rotatable motor shaft, a first intermediate shaft, and a second intermediate shaft extending in parallel to the first intermediate shaft. An output shaft removably holds a tool accessory and has a driving axis. A motion-converting mechanism converts rotation of the first intermediate shaft only into linear reciprocating motion and thereby hammers the tool accessory along the driving axis. A rotation-transmitting mechanism transmits rotation of the second intermediate shaft to the output shaft and thereby only rotationally drives the output shaft around the driving axis.

A power tool, such as a rotary hammer, includes a housing, an output shaft for mounting a tool accessary and a motor having a motor shaft that generates a rotational output for rotating and linearly hammering the output shaft. The rotational output of the motor shaft is coupled to the output shaft via a driving mechanism that includes a hammer mechanism. An intervening member is axially movable relative to the motor shaft and is operably coupled between the motor shaft and the hammer mechanism. The hammer mechanism and the output shaft are supported by a movable support that is axially movable relative to the housing. Because the output shaft and the driving mechanism are movable relative to the motor and the housing, which preferably includes handle, via the intervening member and the movable support during hammering operations, vibration generated during hammering operations can be dampened before reaching the housing.

Systems, instruments, and methods for operating a surgical instrument. The methods comprising: receiving at least a portion of an external object in a recess of a hollow shank; rotating a first shaft disposed within the hollow shank; using rotation of the first shaft to cause translational movement of a second shaft of the surgical instrument in a first direction away from the first shaft and along a central axis of the surgical instrument; applying a pushing force on the external object using the second shaft that is experiencing the translational movement; and causing translational movement of the second shaft in a second direction opposed from the first direction after the pushing force has been applied to the external object.

In a hand-held power tool including a gear for driving an output shaft, which is situated in an assigned gear housing, and including a mode-setting unit for setting the operating mode for an impact drilling mode, a drilling mode, or a screwing mode, the mode-setting unit including a rotatable actuating element and a rotatable setting element coupled to the rotatable actuating element. The setting element is coupled, at least in one operating mode, to a transmission element which is mounted on the gear housing and is axially displaceable on the gear housing in a screwing position assigned to the screwing mode and is axially fixed on the gear housing in impact drilling and drilling positions assigned to the impact drilling and drilling modes. The actuating element and the setting element are formed as one piece from plastic.

A power tool includes a motor having a motor shaft, a first intermediate shaft, and a second intermediate shaft extending in parallel to the first intermediate shaft. An output shaft removably holds a tool accessory and has a driving axis extending in parallel to the first and second intermediate shafts. A motion-converting mechanism converts rotation of the first intermediate shaft to linearly hammer the tool accessory. A rotation-transmitting mechanism transmits rotation of the second intermediate shaft to rotate the output shaft. A rotational axis of the motor shaft intersects, or is skewed relative to, the driving axis. A pair of first gears, e.g., bevel gears, operably couples the motor shaft to a first one of the first and second intermediate shafts. A pair of second gears operably couples the first one of the first and second intermediate shafts to a second one of the first and second intermediate shafts.