Abstract: A handheld power tool has a monostable operating button 6 which has a stable switching position and a pressed switching position. A catch 32 which can be pivoted between a releasing position and a locking position in a pivoting direction 34 is provided, wherein the catch 32, in the locking position, stops the monostable operating button 6 in the pressed switching position. An operating knob 30 can be moved by the user in a shifting direction 31 which is perpendicular to the pivoting direction 34. The catch 32 is attached to the operating knob 30 by means of a joint 36. A slotted link 38 converts a movement of the catch 32 along the shifting direction 31 into a pivoting movement in the pivoting direction 34.

Abstract: A hand-held power tool having a motor-driven impact mechanism and monostable operating button. A locking switch for the monostable operating button has a sliding direction, an actuating knob, a catch and a sliding block, wherein the actuating knob is able to be moved by the user in the sliding direction from a releasing position to a locking position. The catch is pivotable in a pivoting direction perpendicular to the switching direction between a first position and a second position. The catch is disengaged from the operating button 6 in the first position and the catch engages in the operating button in the second position, arresting the operating button in the pressed position. The catch has, on a side facing in the pivoting direction, a slotted-guide face that is inclined with respect to the sliding direction. The sliding block bears on the slotted-guide face.

Abstract: A hammer drill having an impact mechanism and a rotary drive, wherein the hammer drill is designed to rotate a tool at a speed n about a longitudinal axis of the tool and to drive it with an output impact power PS along the longitudinal axis with a striking movement is disclosed. At a working point, at least one condition is met: 1. The ratio of the output impact power PS to the speed n is at least 3.5 W/rpm; 2. Depending on the output impact power PS, the speed n is at most (PSAN?300)2/2000+150) rpm; 3. In the event of an infinitesimal change in the output impact power PS, the speed n changes by at most 0.1 rpm/W.

Abstract: A hand-held power tool includes a tool fitting, an impact mechanism, and a rotary drive. The hand-held power tool is configured to rotate a tool held in the tool fitting with a rotational speed about a longitudinal axis of the tool and to drive the tool with an impact movement along the longitudinal axis at an impact frequency f. A ratio of the rotational speed to the impact frequency f at least at a working point of the hand-held power tool is at most 5.0 rpm/Hz or at least at the working point of the hand-held power tool the rotational speed is at most (0.2*(f/Hz-22){circumflex over (?)}2+80) rpm for impact frequencies f in a range from 20 to 60 Hz.

Abstract: A hand-held power tool having a motor-driven impact mechanism and monostable operating button. A locking switch for the monostable operating button has a sliding direction, an actuating knob, a catch and a sliding block, wherein the actuating knob is able to be moved by the user in the sliding direction from a releasing position to a locking position. The catch is pivotable in a pivoting direction perpendicular to the switching direction between a first position and a second position. The catch is disengaged from the operating button 6 in the first position and the catch engages in the operating button in the second position, arresting the operating button in the pressed position. The catch has, on a side facing in the pivoting direction, a slotted-guide face that is inclined with respect to the sliding direction. The sliding block bears on the slotted-guide face.

Abstract: A handheld power tool has a monostable operating button 6 which has a stable switching position and a pressed switching position. A catch 32 which can be pivoted between a releasing position and a locking position in a pivoting direction 34 is provided, wherein the catch 32, in the locking position, stops the monostable operating button 6 in the pressed switching position. An operating knob 30 can be moved by the user in a shifting direction 31 which is perpendicular to the pivoting direction 34. The catch 32 is attached to the operating knob 30 by means of a joint 36. A slotted link 38 converts a movement of the catch 32 along the shifting direction 31 into a pivoting movement in the pivoting direction 34.

Abstract: An assembly includes a side handle for a hand-held power tool and includes an eyelet device which includes an eyelet portion which is configured to be connected to a safety belt, wherein the side handle includes a clamping ring which is configured to attach the side handle to a round portion of the hand-held power tool, and wherein the eyelet device is configured to be attached to the clamping ring.

Abstract: A portable power tool is disclosed. The tool has a tool holder in which a tool can be moveably inserted on a working axis in a striking direction. A percussion mechanism has a striker coupled via a pneumatic chamber to an exciter moved periodically along the working axis and an intermediate striker arranged in the striking direction downstream from striker. The intermediate striker is guided in a slide bearing with a tolerance coaxially to the working axis. The intermediate striker has a ring-shaped bead. A hollow-cylindrical backstop is arranged in the striking direction upstream from the bead. The backstop is moveably guided on a sliding surface with radial play along working axis. The radial play is at least three times as large as a tolerance of the guide of the intermediate striker in the slide bearing.

Abstract: A portable power tool has an exciter piston guided along a movement axis in a guide tube and a striker coupled to the exciter piston. A connecting rod is fastened to a piston pin in the exciter piston and to an electric motor. A bearing for supporting the piston pin is formed by a piston head of the exciter piston and a closure plate inserted into the exciter piston. A rotary closure is formed by a groove, extending in a direction of rotation about the movement axis, in the piston wall and by a radially protruding fin on the closure plate. A detent for locking the fin counter to the direction of rotation is pivotable in the radial direction between a locking position and a releasing position. The detent is deflected beyond the external dimensions of the piston wall in the radial direction in the releasing position.

Abstract: A portable power tool is disclosed. The tool has a tool holder in which a tool can be moveably inserted on a working axis in a striking direction. A percussion mechanism has a striker coupled via a pneumatic chamber to an exciter moved periodically along the working axis and an intermediate striker arranged in the striking direction downstream from striker. The intermediate striker is guided in a slide bearing with a tolerance coaxially to the working axis. The intermediate striker has a ring-shaped bead. A hollow-cylindrical backstop is arranged in the striking direction upstream from the bead. The backstop is moveably guided on a sliding surface with radial play along working axis. The radial play is at least three times as large as a tolerance of the guide of the intermediate striker in the slide bearing.

Abstract: A method using a tool for producing a fiber composite component includes a planar fiber lay-up placed on a carrier mold, provided with a stiffening section protruding from the lay-up and pressed between parts of a molding tool. A chamber sealed from the mold is formed by an air-tight film enclosing the tool, the lay-up and the stiffening section. The chamber is connected to a resin supply line and a vacuum line. Resin is aspirated by negative pressure applied to the vacuum line, and the lay-up and the stiffening section are saturated by resin to form the fiber composite component. Air and resin are drawn between the parts of the tool, through the stiffening section and into a suction channel extending in the tool and connected to the vacuum line through a suction opening of the tool, for conducting air and/or resin.

Abstract: A hand-held machine tool is provided. The hand-held machine tool includes a striking element that is accelerated along a working axis, and a guide for the striking element. A cushioning damper limits a motion of the striking element along the working axis and has an elastic damping ring. The damping ring has grooves running on at least one face side radial to the working axis.

Abstract: The tool holder according to the invention for a chipping hammer has a tool receptacle for receiving a tool and a tool securing device for securing the tool in the tool receptacle. The tool securing device provides a shaft having an eccentrically arranged mandrel and at least one end piece and a bar having at least one eye in which the end piece engages in a form-fitting manner. The tool securing device is pivotable into at least one first position for inserting and removing the tool and into at least one second position for securing the tool. The eye has a non-circular cross-section.

Abstract: A method using a tool for producing a fiber composite component includes a planar fiber lay-up placed on a carrier mold, provided with a stiffening section protruding from the lay-up and pressed between parts of a molding tool. A chamber sealed from the mold is formed by an air-tight film enclosing the tool, the lay-up and the stiffening section. The chamber is connected to a resin supply line and a vacuum line. Resin is aspirated by negative pressure applied to the vacuum line, and the lay-up and the stiffening section are saturated by resin to form the fiber composite component. Air and resin are drawn between the parts of the tool, through the stiffening section and into a suction channel extending in the tool and connected to the vacuum line through a suction opening of the tool, for conducting air and/or resin.

Abstract: A hand-held machine tool is provided. The hand-held machine tool includes a striking element that is accelerated along a working axis, and a guide for the striking element. A cushioning damper limits a motion of the striking element along the working axis and has an elastic damping ring. The damping ring has grooves running on at least one face side radial to the working axis.

Abstract: The tool holder according to the invention for a chipping hammer has a tool receptacle for receiving a tool and a tool securing device for securing the tool in the tool receptacle. The tool securing device provides a shaft having an eccentrically arranged mandrel and at least one end piece and a bar having at least one eye in which the end piece engages in a form-fitting manner. The tool securing device is pivotable into at least one first position for inserting and removing the tool and into at least one second position for securing the tool. The eye has a non-circular cross-section.

Abstract: The handheld power tool (10) has a pneumatic striking mechanism (12) that has an exciter element (17), a striking element (17) and an anvil (28). A mechanical spring 8(32) exerts force onto the anvil (26) in the direction opposite from the striking direction (24) of the pneumatic striking mechanism (12).

Abstract: A drill, which is used in a hammer drill for drilling holes in stone, concrete and the like, includes a one-piece drilling head (10, 20, 30) formed of a hard material and provided, at its first end (5), with at least one main bit having a tip (4) and at least one cutting structure (3) integral to the one-piece drilling head (10; 20; 30), and at a second end (6) located opposite the first end (5), with a bottom surface (7) for the mounting the drilling head (10; 20; 30) on the drill stem (8), and having a plurality of axially extending through-grooves (11; 21; 31) for removing drillings produced during a drilling process and having a cross-section which increases, at least regionwise, in a direction toward the bottom surface (7) of the drilling head (10; 20; 30).

Abstract: A hand-held power tool includes two vibration-damped handles (21), two handle attachment axles (31) for securing the two handles (21) on the tool outer housing (12), respectively, and extending at an angle to respective longitudinal axes (23) of respective handles (21), each handle attachment axle being surrounded, at least in some areas, by the mounting section (24) of the respective handle (21), a damping sleeve (31) formed of an elastic material and provided between the mounting section (24) of the respective handle (21) and the respective handle attachment axle (30), with the damping sleeve (31) forming a first damping element, and a damping body (36) provided on a free end (26) of each handle (21) and forming a second damping element and having an extension (D) in a radial, with respect to the handle longitudinal axis, direction that is greater than a minimal radial extension (T) of the handle (21) at its free, second end.

Abstract: A hard material insert (1) for a drill (2, 2?) includes an axially central reinforcement (3) provided in the insert, and two diametrically opposite, radial arms (4) each having a cross-section tapering radially outwardly, opposite free side (8) and connection side (7), with the free and connection sides (8, 7) of one of the radial arms (4) being arranged alternatively to the free and connection sides of another of the radial arms (4), and a concave recess (6) provided on the connection side (7).