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 line penetration for routing a line through a building part. The line penetration includes a first lamellar element with a hollow-cylindrical first base part for receiving the line in a straight-through line opening, and with first circumferential lamellas, which extend outwardly transverse to an axial direction of the first base part; a second lamellar element with a hollow-cylindrical second base part for arrangement in a passage opening of the building part, and with second circumferential lamellas, which extend inwardly transverse to an axial direction of the line opening, where the first and second lamellas mesh with one another in the manner of a comb, so that the side faces of the lamellas are impermeable to gas and bear slidingly on one another.

Abstract: A tool for roughening a borehole surface. The tool includes a coupling portion for clamping the tool in a drilling machine; and a tool head for machining the borehole surface, where the tool head comprises a cutter that is circumferentially disposed on the tool head, and where the tool head has at least one slit, which passes through from one side to the other and which, starting from an end face of the tool head, and extends axially along a longitudinal axis of the tool.

Abstract: A line penetration for routing a line through a building part. The line penetration includes a first lamellar element with a hollow-cylindrical first base part for receiving the line in a straight-through line opening, and with first circumferential lamellas, which extend outwardly transverse to an axial direction of the first base part; a second lamellar element with a hollow-cylindrical second base part for arrangement in a passage opening of the building part, and with second circumferential lamellas, which extend inwardly transverse to an axial direction of the line opening, where the first and second lamellas mesh with one another in the manner of a comb, so that the side faces of the lamellas are impermeable to gas and bear slidingly on one another.

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 tool for roughening a borehole surface. The tool includes a coupling portion for clamping the tool in a drilling machine; and a tool head for machining the borehole surface, where the tool head has an outer shell surface on which a cutter protrudes laterally from the shell surface, and where the outer shell surface has a camber along the longitudinal direction of the tool.

Abstract: A tool for roughening a borehole surface. The tool includes a coupling portion for clamping the tool in a drilling machine; and a tool head for machining the borehole surface, where the tool head comprises a cutter that is circumferentially disposed on the tool head, and where the tool head has at least one slit, which passes through from one side to the other and which, starting from an end face of the tool head, and extends axially along a longitudinal axis of the tool.

Abstract: An expansion dowel includes a sleeve-shaped dowel body (12) having a first dowel part (21; 61) and at least one second dowel part (31; 71) axially adjoining the first dowel part (21; 61), and at least one snap connection device (41; 81) for connecting the first (21; 61) and second (31; 71) dowel parts together and having an engagement element (42) provided on one of the first and second dowel parts (31; 71) and a receiving element (47) for the engagement element (42) and provided on another of the first and second dowel parts (21; 61).

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: An ejection device (11) has an ejection unit (12) having a displacement mechanism with two piston rods (13), a receptacle unit (32) including receptacle (34) for a container (33), a head part for limiting the receptacle (34) at one of its ends, a holding device (21) which is arranged on the ejection unit (12) for securing the receptacle unit (32) thereto, and tension members (38) provided on the receptacle unit (32) and which extend along the receptacle (34) and are secured to the head part (35), each tension member (38) having a engageable-from behind section (39) at its end remote of the head part, the holding device (21) having locking elements which can engage the engageable-from behind sections (39) of the tension members (38) to lock the receptacle unit (32) with the ejection unit (12).

Abstract: A quick-acting closure (1) for connecting a mixer tube (3) and a connecting part (2) of an extruder unit. The connecting part (2) has a connector (9) with a conical threaded base member, on which an external thread (12) is arranged. The mixer tube (3) has a conical threaded base member, on which an internal thread (19) is arranged. The internal thread (19) on the connector part (16) of the mixer tube (3) is a multi-path internal thread.

Abstract: A quick-acting closure (1) for connecting a mixer tube (3) and a connecting part (2) of an extruder unit. The connecting part (2) has a connector (9) with a conical threaded base member, on which an external thread (12) is arranged. The mixer tube (3) has a conical threaded base member, on which an internal thread (19) is arranged. The internal thread (19) on the connector part (16) of the mixer tube (3) is a multi-path internal thread.

Abstract: A suction module for an electrical hand-held power too land including a housing (11) at least partially receivable in the battery-receiving chamber (15) of the power tool (1) in the power tool, electrical conductors (9) for connecting the module housing (11) with a power source (10), battery contacts (16) for electrically connecting the module housing with the power tool (1), an aspirator (13) having a drive motor (14) for producing vacuum and located in the module housing (11), with the aspirator (13) being connectable with a suction head (7) arrangeable in a region of a working tool.

Abstract: A working tool for use with a percussion power tool and including a cushioning elongate stem (3), and a head (4) connected with the stem (3) for joint rotation therewith and for a limited axial displacement relative thereto, with the tool head (4) being adapted, with respect to its resistance associated with its cushioning properties, to characteristics of the percussion piston (5) of the power tool and with the tool stem (3) and the tool head (4) having mutually abutting each other end surfaces (10) which form at least a partially flat contact upon abutting each other.

Abstract: A suction module for an electrical hand-held power too land including a housing (11) at least partially receivable in the battery-receiving chamber (15) of the power tool (1) in the power tool, electrical conductors (9) for connecting the module housing (11) with a power source (10), battery contacts (16) for electrically connecting the module housing with the power tool (1), an aspirator (13) having a drive motor (14) for producing vacuum and located in the module housing (11), with the aspirator (13) being connectable with a suction head (7) arrangeable in a region of a working tool.

Abstract: A working tool for use with a percussion power tool and including a cushioning elongate stem (3), and a head (4) connected with the stem (3) for joint rotation therewith and for a limited axial displacement relative thereto, with the tool head (4) being adapted, with respect to its resistance associated with its cushioning properties, to characteristics of the percussion piston (5) of the power tool and with the tool stem (3) and the tool head (4) having mutually abutting each other end surfaces (10) which form at least a partially flat contact upon abutting each other.

Abstract: A combination drilling member includes an axially elongated drill, such as used for drilling rock, having an axially extending shaft (2) with a first end leading in the drilling direction containing a cutting bit (3). The shaft (2) has at least one helical drilled material removal groove (4) and an auxiliary element encircling and detachably connected to the shaft (2) intermediate the ends thereof. The auxiliary element (6) has at least one elastic plastic part (9) extending around the shaft and containing a through hole (10) for the shaft where the plastic part is secured to the shaft by at least one of frictional and positive locking engagement against inadvertent axial displacement and held against relative rotation to torques of up to 40 Nm.

Abstract: A self-cutting dowel including a dowel rod (2) having a head portion (3) which widens in a setting direction (S), and a sleeve (5) displaceable along the dowel rod (2) and having, at its end adjacent to the head portion (3) a plurality of expansion tabs (7) separated by longitudinal slots (6), with the sleeve (5) being displaceable onto the head portion (3) upon radial expansion of the expansion tabs (7), and with the sleeve (5) being displaceable onto the head portion (3) upon radial expansion of the expansion tabs (7), and with the sleeve (5) being provided with at least one cutter (10) for forming an under cut in a ground during a dowel setting process upon rotation of the sleeve (5), the at least one cutter (10) being provided on a leading, in a rotational direction (R), longitudinal edge (11) of one of the expansion tabs (7) and extending at least along a portion of the axial extent of the one expansion tab.

Abstract: An anchor rod for use as a composite anchor is secured in a receiving borehole by one of a hardenable or curable organic and inorganic mortar mass. The anchor rod has a means (3) at a trailing end region (2) for engaging a load. The anchor rod has an anchoring region (4) insertable into the receiving borehole and has a thread-like profiling (5) for interaction with the mortar mass injected into the receiving borehole. The thread-like profiling is a coarse screw thread (5) and has a thread pitch (s) which reduces in the axial direction from the leading end toward the trailing end of the anchor rod (1).

Abstract: An attachment anchor assembly for securing a component (15) to a base material (U) includes an axially extending anchor rod (11) having an axially extending anchoring region and a centering sleeve (18) laterally enclosing the anchor rod in a sealing manner and spaced from the anchoring region. A sealing element (19) is located between the centering sleeve (18) and the anchoring region and laterally encloses the anchor rod (11) in a sealing manner. The sealing element (19) has a transverse sealing surface facing towards the anchoring region and the sealing surface can be displaced axially towards the centering sleeve.