Abstract: A pneumatically striking hand-held power tool is controlled by the following steps. An acceleration (a) along a striking axis (8) of the hand-held power tool (1) is detected. A driving power is reduced if the detected acceleration (a) is greater than a threshold value (A), the threshold value (A) being selected to be greater than maximum acceleration values (a1, a2) that occur on a workpiece during the striking operation of the hand-held power tool (1).

Abstract: A hand-held power tool includes a pneumatic percussing mechanism (3) located in the power tool housing (2) and having an anvil (5) and a percussion piston (4) for applying blows to the anvil (5), and at least one oscillation damper (6, 6?) including an oscillation damping mass (7, 7?), at least one spring (8a, 8a?) for compressively preloading the damping mass (7, 7?) against the power tool housing (2), and an axially displaceable excitation member (9) for actively exciting the oscillation damper (6, 6?) in response to the anvil (5) occupying an operational position.

Abstract: An electrical hand-held power tool includes a driving element (9; 9?) displaceable in the tool housing (8) along a drive axis (A) for driving a working tool (7, 7?), and at least one rigid electrical module located in the housing (8), and secured therein by at least one spring (4) that preloads the electrical module against the housing (8).

Abstract: A hand-held power tool includes a vibration-compensating mass (3, 3?) secured on the tool housing and having at least one rigid compensation mass (4, 4?, 4?) oscillating along an oscillation axis (A), formed of a plurality of fixedly connected with each other mass components (12, 12?, 12?), and supported relative to the housing (2), by at least one spring (5).

Abstract: A rotary-percussion hand-held power tool capable of applying blows along a percussion axis (A) includes a percussion mechanism assembly (2) with a mode selection switch (3), a guide handle (4) vibrationally decoupled from the percussion mechanism assembly (2) and with a motor switch (5) for turning a power tool motor on and off, a locking switch (7) for locking the motor switch and displaceable in a switching region (X), and a switching linkage (9) displaceable by the mode selection switch (3) and having a stop (10) displaceable during a drilling operational mode into the switching region (X) of the locking switch (7), with the switching linkage (9) having two legs (16a, 16b) extending at an angle to each other, and with one of the legs (16a), which is more stiff and forms the stop (10), being pivotally supported on the percussion mechanism assembly (2), and another of the legs (16b), which extends axially and is flexural, being connected with the mode selection switch (3).

Abstract: A hand-held power tool includes an antivibration element (1) for vibrationally decoupling a handle sub-assembly (6) from another sub-assembly (5) that vibrates along a vibration axis (A), and having a coil spring (7) oriented along the vibration axis (A), and a threaded plug (3) provided with an outer thread (4) longitudinally extending therealong, with the coil spring (7) having a plurality of windings (2) extending along a preload region (V) and screwed on the outer thread (4) under an axial compressive preload, and with the outer thread (4) having a between-flight width (Z) greater than a diameter (D) of the spring wire of which the coil spring (7) is formed.

Abstract: A hand-held power tool includes a pneumatic percussing mechanism (3) located in the power tool housing (2) and having an anvil (5) and a percussion piston (4) for applying blows to the anvil (5), and at least one oscillation damper (6, 6?) including an oscillation damping mass (7, 7?), at least one spring (8a, 8a?) for compressively preloading the damping mass (7, 7?) against the power tool housing (2), and an axially displaceable excitation member (9) for actively exciting the oscillation damper (6, 6?) in response to the anvil (5) occupying an operational position.

Abstract: An oscillation damper for a hand-held power tool (D) has at least one first spring (4) and at least one second, additional spring (9) for axially compressively preloading a damping mass (3) of the damper against the tool housing, and a user-operated switching element (8) having a first position in which the damping mass (3) is axially compressively preloaded against the power tool housing only by the at least one first spring (4), and a second position in which the switching means (8) connects the damping mass (3) with the at least one second additional spring (9) so that the damping mass (3) is axially compressively preloaded against the power tool housing by both the at least one first spring (4) and the at least one second, additional spring (9).