Abstract: An eccentric drive 1 for a portable power tool 2 has a motor 5, an eccentric wheel 6, a linear guide 9, a slide 8 and a connecting rod 7, which has a head 17 suspended on the slide 8 and a second head 15 suspended on the eccentric wheel 6. A bearing bush 16 for the rotatable mounting of the connecting rod 7 is provided at least on one of the two heads 17. The head 15 is composed of an injection molding material. The bearing bush 16 is composed of a fiber composite material, which includes continuous carbon fibers 25 embedded in a thermoplastic matrix.

Abstract: A machine tool includes a tool holder and a pneumatic striking mechanism that includes, on a working axis, an exciter piston, a beater, and a pneumatic chamber disposed between the exciter piston and the beater. The exciter piston is drivable by the motor and includes a pot-shaped base body, a seal ring, and a tube-shaped cladding body. The pot-shaped base body has a lateral wall enclosing the working axis and a collar which protrudes in a radial direction. The tube-shaped cladding body is disposed on the pot-shaped base body surrounding the lateral wall. A groove is defined between the collar and the tube-shaped cladding body and the seal ring is disposed in the groove.

Abstract: A machine tool includes a tool holder and a pneumatic striking mechanism that includes, on a working axis, an exciter piston, a beater, and a pneumatic chamber disposed between the exciter piston and the beater. The exciter piston is drivable by the motor and includes a pot-shaped base body, a seal ring, and a tube-shaped cladding body. The pot-shaped base body has a lateral wall enclosing the working axis and a collar which protrudes in a radial direction. The tube-shaped cladding body is disposed on the pot-shaped base body surrounding the lateral wall. A groove is defined between the collar and the tube-shaped cladding body and the seal ring is disposed in the groove.

Abstract: The torque coupling has a shaft, a hollow shaft and a plurality of levers. The bearings of the levers are non-rotatably connected to the shaft and the levers are spring-loaded so as to be pressed against the hollow shaft. The levers are bent from a steel strip.

Abstract: A hand-held power tool has a tool socket 2 to hold a tool on a working axis 11. A pneumatic striking mechanism 6 has an exciter piston 13 that is forced to move periodically along the working axis 11 by a motor 5 and it also has a striker 14 that is coupled to the exciter piston 13 via a pneumatic chamber 18. The exciter piston 13 has a cylindrical main body 21 made of a polymer. One or more rings 24 containing copper surround the main body 21. The rings 24 protrude from the main body 21 in the radial direction.

Abstract: A pneumatic striking mechanism includes a guide cylinder in which a freely moving piston and an exciter piston are arranged movably along a striking axis. The guide cylinder has a plastic. The striking mechanism includes a pneumatic chamber sealed off by the guide cylinder, by the freely moving piston and by the exciter piston, as well as a drive for periodically moving the exciter piston, as a result of which the freely moving piston is excited to execute a periodical movement between the striking surface and the exciter piston.

Abstract: The torque coupling has a shaft, a hollow shaft and a plurality of levers. The bearings of the levers are non-rotatably connected to the shaft and the levers are spring-loaded so as to be pressed against the hollow shaft. The levers are bent from a steel strip.

Abstract: A power tool is disclosed. The power tool has a pneumatic striking mechanism, which has a striking device that acts percussively along a working axis. A motor serves as the drive. A gear mechanism has a driving gear wheel and a driven gear wheel, where the driving gear wheel meshes with the driven gear wheel and at least the axis of rotation of the driven gear wheel is inclined to the working axis. The driving gear wheel is fabricated of metal and the driven gear wheel is fabricated of a carbon-fiber reinforced plastic.

Abstract: A pneumatic striking mechanism includes a guide cylinder in which a freely moving piston and an exciter piston are arranged movably along a striking axis. The guide cylinder has a plastic. The striking mechanism includes a pneumatic chamber sealed off by the guide cylinder, by the freely moving piston and by the exciter piston, as well as a drive for periodically moving the exciter piston, as a result of which the freely moving piston is excited to execute a periodical movement between the striking surface and the exciter piston.

Abstract: An electrical tool includes a housing, a conductor channel, and a stranded conductor. The housing includes a motor, electronics, and drive gear. The conductor channel has a flexible section and a rigid section. The stranded conductor is in a receptacle of the conductor channel. One end of the stranded conductor is connected to a conductor of a network cable of the electrical tool. Another end of the stranded conductor is conductively connected with a component of the electrical tool.

Abstract: A hand-held power tool includes a spring-mounted decoupling device (16) for supporting a tool handle (14) on a tool housing (4) and having a first support arrangement (18) including a connecting device (22) pivotally supported relative to the housing by a housing-side pivotal support (28) and relative to the handle (14) by a handle-side pivotal support (32), and a second support arrangement (20) that is spaced from the operational axis (A) in a second direction (y) perpendicular to the first direction (z) further away than the first support arrangement (18).

Abstract: A hand-held power tool includes a spring-mounted decoupling device (16) for supporting a tool handle (14) on a tool housing (4) and having a first support arrangement (18) including a connecting device (22) pivotally supported relative to the housing by a housing-side pivotal support (28) and relative to the handle (14) by a handle-side pivotal support (32), and a second support arrangement (20) that is spaced from the operational axis (A) in a second direction (y) perpendicular to the first direction (z) further away than the first support arrangement (18).

Abstract: A hand-held machine tool (2) has a main housing (6) at which vibrations are generated during operation, a handle housing (12) that is held at the main housing (6) with the intermediary of a vibration-reducing device (14), and an adjusting arrangement (22) which has an adjusting device on the main housing side which can be adjusted between at least two positions and an adjusting device on the handle housing side which can be adjusted between at least two positions and which is mechanically connected to the adjusting device (26) on the main housing side by an adjusting connection (26). The adjusting connection (26) has a flexible vibration-reducing portion (36) between the handle housing (12) and the main housing (6).

Abstract: An electrical hand-held power tool includes a non-contacting electrical manual control switch (3) having an operating element (4) and a sensor switch (5), a pivotable carrier (6) which carries a switching element (13) and which is manually controlled by the operating element (4) of the manually control switch (3), the sensor switch (5) being connected with the carrier (6) vibration-free, and pivot transmitting device (7) axially displaceable along the vibration axis A) of a vibrating assembly (2) of the power tool relative to the operating element (4) for pivoting the carrier (6) in response to actuation of the operating element (4).

Abstract: An electrical hand-held tool includes an electric motor (2) having a rotor shaft (3) extending transverse to the tool percussion axis (A), a rotor sheet stack (4) supported on the rotor shaft, and a pinion (5) supported on the rotor shaft, a percussion mechanism (6) including an eccentric (7), and a drive gear (8) engageable with the motor pinion (5) for driving the eccentric (7), with the rotor sheet stack (4) being arranged, with respect to the percussion axis A, completely diametrically opposite the drive gear (8).

Abstract: An electrical hand-held power tool includes a non-contacting electrical manual control switch (3) having an operating element (4) and a sensor switch (5), a pivotable carrier (6) which carries a switching element (13) and which is manually controlled by the operating element (4) of the manually control switch (3), the sensor switch (5) being connected with the carrier (6) vibration-free, and pivot transmitting device (7) axially displaceable along the vibration axis A) of a vibrating assembly (2) of the power tool relative to the operating element (4) for pivoting the carrier (6) in response to actuation of the operating element (4).

Abstract: An electric hand tool apparatus (1) for driving a drill-like tool, which carries out an at least partial rotational movement, has within a housing (2), an electric motor (4) without or free of collector and slip ring, the rpm of which can be controlled by motor control electronics (3), wherein an rpm-dependent clutch (5) for transferring the torque is disposed in a force transfer path from the electric motor (4) to a transmission (6). Optionally, to prevent an excessively high twisting of the housing (2), a sensor (7) is evaluated and the rpm of the electric motor (4) is reduced in order to sever the transfer of force by the rpm-dependent clutch (5).

Abstract: A partially percussive electrical hand tool machine (1) having a portable housing (3), a striking mechanism module (4) connected, in a vibration-damped manner, to the housing (3) and having electrical lines (5) for electrical connection of the relatively moveable striking mechanism module (4) to the housing (3). The electrical lines (5) are non-vibrationally attached in a bending flexible wiring bridge (7) arranged transverse to the striking axis (A).

Abstract: An electrical hand held tool for producing at least a percussion movement of a working tool includes an electrical drive, a first, oscillating subassembly including a percussion mechanism (2) and a rotor (5) of the electrical drive for transmitting torque to the percussion mechanism and rotatable about a rotor axis (B) extending parallel to an oscillation path (I) of the first subassembly, and a second subassembly including a housing (6) in which the first subassembly is supported for a limited oscillating movement along a tool axis (A).

Abstract: An electrical tool includes a housing (2) in which at least one of motor (3), electronics (16), and drive gear (4) is arranged, a conductor channel (11) having at least one flexible section (14) and a rigid section (15), and at least one stranded conductor arranged in a receptacle (12) of the conductor channel (11) and having one of its ends connected with a conductor of the network cable (8) of the tool and another of its ends conductively connected with a component of the electrical tool (1).