Abstract: Hammer drill and/or chipping hammer having a drive motor, an impact mechanism and a tool fitting for fitting a tool, wherein the impact mechanism has an anvil that is axially displaceable in an anvil guide and acts on the tool, wherein the impact mechanism has an idle-strike damper element and a rebound-strike damper element, which are formed in one piece with one another and as such form a combined damper element, wherein the anvil guide is arranged outside, preferably only outside the combined damper element.

Abstract: A hand-held power tool, in particular a hammer drill or combination hammer, having a tool fitting for holding a striking and rotating tool on a working axis, an electric motor coupled to a transmission shaft, an impact mechanism, which has a striker that is moved periodically along the working axis, and having a rotary drive, which drives a guide tube carrying the tool fitting in rotation about the working axis, wherein the rotary drive is coupled to the transmission shaft via a rocker lever.

Abstract: A power tool, in particular a chipping hammer, containing a tool-fitting element for receiving and holding a tool, in particular a chisel, and an apparatus for selectively turning the tool-fitting element. The apparatus contains an impact-mechanism housing having a connecting device, a coupling element having an attachment device, and an uncoupling element for reversibly separating the coupling element from the impact-mechanism housing, wherein the coupling element is settable reversibly in a first or second position, and wherein, in the first position, the coupling element is connected releasably to the impact-mechanism housing such that the tool-fitting element is prevented from turning about an axis of rotation and, in the second position, the coupling element is movable relative to the impact-mechanism housing such that the tool-fitting element is able to be turned about an axis of rotation relative to the impact-mechanism housing.

Abstract: Hammer drill and/or chipping hammer (100) having a drive motor (70), an impact mechanism (10) and a tool fitting (50) for fitting a tool (110), wherein the impact mechanism (10) has an anvil (30) that is axially displaceable in an anvil guide (20) and acts on the tool (110), wherein the impact mechanism (10) is equipped with an idle-strike damper element (11) and a rebound-strike damper element (13), wherein the idle-strike damper element (11) and/or the rebound-strike damper element (13) is/are integrated on the anvil (30).

Abstract: Hammer drill and/or chipping hammer (100) having a drive motor (70), an impact mechanism (10) and a tool fitting (50) for fitting a tool (110), wherein the impact mechanism (10) has an anvil (30) that is axially displaceable in an anvil guide (20) and acts on the tool (110), wherein the impact mechanism (10) has an idle-strike damper element (11), which acts between the anvil (30) and the tool fitting (50), and wherein the impact mechanism has a guide housing (80), which engages at least partially around the anvil (30) and/or the tool fitting (50), wherein an additional idle-strike damper element (31) is provided, which acts between the tool fitting (50) and the guide housing (80).

Abstract: A hand-held power tool, in particular a hammer drill or combination hammer, having a tool fitting for holding a striking and rotating tool on a working axis, an electric motor coupled to a transmission shaft, an impact mechanism, which has a striker that is moved periodically along the working axis, and having a rotary drive, which drives a guide tube carrying the tool fitting in rotation about the working axis, wherein the rotary drive is coupled to the transmission shaft via a rocker lever.

Abstract: A fastener setting device for setting fastening elements has a combustion chamber for burning a fuel to produce combustion gases, and includes driving piston guided on an inner surface of a tubular piston guide. The driving piston is driven by the combustion gases in the combustion chamber and in the piston guide. The piston guide is formed from a metal strip curved to form a tube, the two facing longitudinal edges of which are connected by a seam and/or positively interlocking portions.

Abstract: A hand-held power tool includes a percussion mechanism (3) arranged in the tool housing (2), and a motor (4) for driving the percussion mechanism and connected therewith by a gear unit (5), with the percussion mechanism including an eccentric (6) a piston (7), and a connection rod (21; 41) connecting the eccentric with the driving piston (7) and having a first part (22; 42) connectable with the eccentric (6), a second part (23; 43) connectable with the drive piston (7) and telescopically displaceable relative to the first part (22; 42), and a spring for damping vibrations occurring during operation of the power tool and arranged between the first (22; 42) and second (23; 43) parts.

Abstract: A percussion hammer, in particular a drilling and/or chisel hammer includes a first housing part (11) in which the hammer motor (3) is arranged, a second housing part (12) in which the drive gear (4) is arranged, and a third housing part (21) in which the percussion mechanism (5) is arranged, with at least one of the first, second and third housing parts (11, 12, 21) being formed of a drawn profile.

Abstract: A hand-held power tool includes a percussion mechanism (3) arranged in the tool housing (2), and a motor (4) for driving the percussion mechanism and connected therewith by a gear unit (5), with the percussion mechanism including an eccentric (6) a piston (7), and a connection rod (21; 41) connecting the eccentric with the driving piston (7) and having a first part (22; 42) connectable with the eccentric (6), a second part (23; 43) connectable with the drive piston (7) and telescopically displaceable relative to the first part (22; 42), and a spring for damping vibrations occurring during operation of the power tool and arranged between the first (22; 42) and second (23; 43) parts.

Abstract: A dust removal unit (1) includes an adjustable axial depth stop (5) for an at least partially rotatable hand tool device (2) with a radially displaced, rotationally fixed, telescopable, axially limited movable suction tube assembly with a suction tube (4) running parallel to the axis (A) of the tool device (2) and coupled at one end to a suction head (3). The suction tube (4) includes an axially extending pleated bellows (6).

Abstract: A chuck for a rotary-percussion power tool (2) and including a working tool guide (3) for receiving a shank (5) of a working tool, at least one locking member (4) for limiting an axial displacement of the shank (5) within an axial displacement length (X) from opposite sides, and a displaceable, spring-biased stop member (7) cooperating, within the shank displacement length (X), with a power tool side, stop surface (8) of the shank (5).

Abstract: A switch assembly (1) for centrally arranged operating mode selection for an at least partially rotary and percussion combination hand tool device (2) is comprised of a first switch sleeve (11) for the switchable percussion drive (6) and a second switch sleeve (12) for the switchable rotary drive meshing with a tool spindle (4) via a countershaft (3) and a switch accessory (10) connecting both switch sleeves (11, 12) together, whereby the countershaft (3) and a percussion drive shaft (5) of the percussion drive (6) are arranged directly adjacent and parallel in a common axially extending zone (B) and rotationally-freely guide a driving gear pair (7) in direct meshing engagement with each other and which can be engaged by way of the switch sleeves (11, 12).

Abstract: A pneumatic percussion operated mechanism for an at least partially percussion driven hand tool device (1) has a cup-shaped piston (2), in whose hollow space (4) an anvil (3) spaced radially inwardly displaceably penetrates inwardly within an axial penetration length (L), whereby the anvil (3) forms, together with the cup-shaped piston (2), a damping radial gap (X) relative to the essentially gas-tight, closed hollow space (4), which forces anvil (3) axially driven by the piston (2) inside the penetration length (L) to reversal of direction.

Abstract: A transmission (1) for a hand tool device with two laterally spaced shafts (2, 2′) having parallel axes (A, A′). which can be switched using switch sleeves (3, 3′) arranged movable in an axially limited manner on the shafts, whereby both switch sleeves (3, 3′) are switchably coupled to one another by a switch transmission unit (4) in a rotationally free axially form-fitting manner and engaging into the switch sleeves and which are resiliently spring-biased along the axes (A, A′) by a spring arrangement (6).

Abstract: A rotary mode selection switch (1) for the synchronized switching over of the operating mode of a hand tool. The switch (1) comprising a manually externally actuated driving member (2) and a driven member (3), wherein the driving member (2) includes two eccentrically disposed recesses (5, 5′) for receiving two spring elements (6, 6′). The two spring elements (6, 6′) include initial front surfaces (7, 7′) that contact the driving member (2) and second front surfaces (8, 8′) that are oriented in the same direction, wherein with an angle shift (&agr;) of the driving member (2) relative to the driven member (3), at least one of the second front surfaces (8, 8′) of the spring elements (6, 6′) alternately contacts at least one eccentrically disposed contact piece (10, 10′, the contact piece axially engaging into the recesses (5, 5′), of the driven member (3).

Abstract: A chuck for a rotary-percussion power tool (2) and including a working tool guide (3) for receiving a shank (5) of a working tool, at least one locking member (4) for limiting an axial displacement of the shank (5) within an axial displacement length (X) from opposite sides, and a displaceable, spring-biased stop member (7) cooperating, within the shank displacement length (X), with a power tool side, stop surface (8) of the shank (5).

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 rotary switch for a hand-held tool and including a manually operated actuation member (3) rotatable over a predetermined angle (&phgr;) for switching from one operational mode to another immediately adjacent operational mode, a rotatable switching member (6) arranged coaxially with the actuation member (3), an overhanging spring (5) connected with the switching member (6) for joint rotation therewith, and an operating pin (4) connected with the actuation member (3) and arranged eccentrically with respect to its rotational axis for deflecting an arm of the overhanging spring to thereby rotate the switching member (6) over a predetermined angle to provide for a predetermined displacement of the switching element (12) of the hand-held tool.

Abstract: An electrical hand-held tool having a plurality of operational modes and including a tool spindle (1) rotatably supported in the tool housing (5) for rotation about a rotational axis (A), an outer sleeve (2) arranged coaxially with the tool spindle (1) and connected thereto for joint rotation therewith, a bolt (6) supported in the housing without a possibility of rotation relative thereto and displaceable in a direction transverse to the rotational axis (A) for engaging in at least one opining (3) provided in the sleeve (2) at least in one of the operational modes of the electrical tool, and a sliding sleeve (12) supported on a drive shaft (13) of the electrical tool and connected with the bolt (6) for displacing same in response to actuation of a mode selection switch (4).