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: A vibration-decoupling arrangement for supporting a percussion unit (2) in a hand-held percussion power tool includes a spring (4) arranged between the percussion unit (2) and a tool housing (3) and preloaded against an engagement point (P) in the housing (3) for preventing vibrations of the percussion unit (2) from being transmitted to the housing (3), and two axially spaced, flexurally deformable, articulated arms (5a, 5b) secured in the housing (3) for supporting the percussion unit (2) in the housing (3), with the arms (5a, 5b) being secured in the housing (3) with a possibility of a limited axial displacement and without any slip motion relative to the housing.

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: A vibration-decoupling arrangement for supporting a percussion unit (2) in a hand-held percussion power tool includes a spring (4) arranged between the percussion unit (2) and a tool housing (3) and preloaded against an engagement point (P) in the housing (3) for preventing vibrations of the percussion unit (2) from being transmitted to the housing (3), and two axially spaced, flexurally deformable, articulated arms (5a, 5b) secured in the housing (3) for supporting the percussion unit (2) in the housing (3), with the arms (5a, 5b) being secured in the housing (3) with a possibility of a limited axial displacement and without any slip motion relative to the housing.

Abstract: An electrical hand-held power tool including a percussion assembly (3) with a percussion mechanism (2) and displaceable, substantially vibration-free, in an outer housing (6) provided with a plurality of aeration openings (4) and at least one cooling conduit (7) connecting the aeration openings (4) with a cooling ventilator (5) and securable on the percussion assembly (3).

Abstract: A hand-held tool including an electromagnetic hammer mechanism (1) for applying a percussion movement to a working tool (3) and including at least one stator, at least one coil (4a), a striking piston formed as a yoke (10) supported in a magnetic flux for a limited displacement along the oscillation axis (A) and having at least one magnetomotive region (11) formed of a soft magnetic ferroelectric material, and at least one magnet (5a) associated with the stator, magnetizable along the oscillation axis (A), and arranged along and adjacent to at least one segment of the coil (4a) located at an end of the stator.

Abstract: A hand-held tool including an electromagnetic hammer mechanism (1) for applying a percussion movement to a working tool (3) and including at least one stator, at least one coil (4a), a striking piston formed as a yoke (10) supported in a magnetic flux for a limited displacement along the oscillation axis (A) and having at least one magnetomotive region (11) formed of a soft magnetic ferroelectric material, and at least one magnet (5a) associated with the stator, magnetizable along the oscillation axis (A), and arranged along and adjacent to at least one segment of the coil (4a) located at an end of the stator.