A rotary power tool includes a housing having a motor housing portion and a handle portion extending therefrom. An electric motor is positioned within the motor housing portion. The rotary power tool further includes a trigger switch configured to activate and deactivate the motor. The rotary power tool further includes a non-contact speed selector switch that is separate from the trigger switch and configured to adjust a rotational speed of the motor. The non-contact speed selector switch is positioned in a foot of the handle portion opposite the motor housing portion.

The invention is based on a hand-held power tool device equipped with a locking device. The locking device is provided for locking an output device and has at least one locking element for supporting at least one radial clamping force. According to a proposed embodiment, the locking element is provided to fasten and/or axially secure at least one component.

A planetary gear system with a sun gear, a ring gear co-axial with the sun gear, at least one planetary gear meshing with both the sun gear and the ring gear, and a planetary gear carrier which rotationally supports the at least one planetary gear. A torque clutch is supported by and connected directly between two of the sun gear, the ring gear, the at least one planetary gear and the planetary gear carrier. The torque clutch prevents relative rotation when an acting torque is below a predetermined torque value and allows relative rotation when the acting torque is above the predetermined torque value. A torque threshold adjustment mechanism is provided for adjusting the predetermined value of the torque at which the torque clutch slips.

A drill has a housing, a motor mounted in the housing having a drive spindle, an output spindle rotationally driven by the drive spindle via a torque clutch. The torque clutch slips when the torque across the torque clutch exceeds a predetermined value. The predetermined value of the torque at which the torque clutch starts to slip is adjustable via a torque threshold adjustment mechanism. A sleeve is rotatably mounted on the output spindle. The drive spindle drives the sleeve via a gear system at a same rate and direction as the output spindle so that there is no relative rotation between the sleeve and output spindle when the torque clutch is not slipping and at a different rate and/or direction so that there is relative rotation between the sleeve and output spindle when the torque clutch is slipping.

A handheld power tool has a tool socket (2) to hold a tool (4) along a working axis (11), a motor (5) and a slip clutch (21) having a number of blocking elements. A sensor (27) serves to record a measured signal (28) as the measure of vibrations inside the handheld power tool (1). A band-pass filter (29) has a pass range in which a frequency lies that is equal to the product of the rotational speed of the wheel (22) on the drive side and the number N of blocking elements (24). The measured signal (28) filtered by the band-pass filter (29) is fed to an evaluation unit (30). When the filtered measured signal (28) exceeds a limit value, the evaluation unit (30) reduces the rotational speed of the motor (5).

A portable machine tool switching unit includes a turning knob unit, which has a coupling unit that can be rotatably driven for coupling to at least one switching element, and further includes at least one energy storage element provided for storing switching energy in the case of a preselection. The energy storage element is integrated in the turning knob unit.

A clutch device includes a guiding element, a first clutch element being capable of sliding relative to the guiding element, a second clutch element being capable of sliding relative to the guiding element, an elastic element including a first connecting leg and a second connecting leg which are respectively connected with the first clutch element and the second clutch element, and a rotating element being capable of rotating about a first axis relative to the guiding element. The rotating element includes a first supporting portion for contacting with the first connecting leg, which is disposed at a first axial position of the first axis, and a second supporting portion for contacting with the second connecting leg, which is disposed at a second axial position of the first axis.

A tool including a motor, a transmission including a ring gear including a face having a linear portion and ramps extending a fixed axial distance, a spindle, a setting collar, and a clutch coupled to the transmission. The collar is rotatable between predetermined angular positions including a first position corresponding to a non-torque-limited first operation mode and a plurality of second positions corresponding to different torque output settings of a torque-limited second operation mode. The clutch includes a follower positioned between a clutch washer and the face, and a clutch sleeve coupled to the collar that is movable a variable axial distance from the clutch washer dependent on the collar position. In the first angular position corresponding to the first mode, the fixed axial distance is greater than the variable axial distance, and in the second angular positions, the variable axial distance is greater than the fixed axial distance.

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 power tool includes a housing having a motor housing portion and a handle portion extending therefrom. An electric motor is positioned within the motor housing portion. The power tool also includes trigger switch configured to activate and deactivate the motor. The power tool further includes a non-contact mode selector switch that is separate from the trigger switch and configured to adjust an operational mode of the tool. The non-contact mode selector switch is positioned in a foot of the handle portion opposite the motor housing portion.