Abstract: An at least partially rotating and axially percussive hand-held machine tool (4) has an impact mechanism (5) with a guide tube (6) in which a percussion piston (7) is driven in an axially percussive manner by a pneumatic spring (8) and with a slip clutch (10) which is driven in rotation, encloses the guide tube (6), is provided axially with cams (9), and has a driving sleeve (11) and driven sleeve (12) which are biased axially relative to one another under pressure by a spring (13).

Abstract: A motor-driven saw has a gearing housing (4), which has at least two housing parts (6, 8), a stroke bar (10), which in operation executes a stroke movement in the direction of a stroke axis (26), and a reciprocating movement generator (36) that can be turned on or off, by virtue of which the stroke movement is superimposed with a reciprocating movement executed transverse to the stroke axis (26). All bearing zones (30, 44, 62) over which the reciprocating movement generator (36) is supported on the gearing housing (4) in a preferred direction of advance (16) of the saw, are arranged in the same carrying housing part (6).

Abstract: A chuck for a rotary and/or percussion power tool includes a rotatable sleeve-shaped base body (1), and at least two wear-resistant guide shells (6, 7) located within the base body and connected with the base body (1) for joint rotation therewith and having projecting radially inwardly entraining elements, with at least one of the at least two guide shells (6, 7) being radially displaceable in the base body (1) within certain limits and forming a projecting radially inwardly locking member (9).

Abstract: A percussion power tool includes a motor (6) located in the tool-housing (4) for driving the output member (12) and the percussion mechanism (10), a chuck (20) for receiving a working tool (22), a locking mechanism (24) for securing the chuck (20) on the output member (12) and including at least one locking member (26) which provides in a locking position thereof, for a formlocking connection between a connection member (30) of the chuck (20) and the output member (12), an adjusting sleeve (34) that prevents, in its blocking position, a radial displacement of the at least one locking member (26) from the locking position and a damping member (56) provided between the output member (12) and the connection member (30) and acting in the axial direction.

Abstract: A reciprocating power saw, in particular a saber saw, with a housing (1), a motor-driven reciprocating stroke bar (2) that has a tool receptacle (3) at its free end, and a bearing means (4), which axially displaceably and pivotably bears the stroke bar (2) in the tool-side end zone of the housing (1). The bearing means (4) has a guide part (5) with a bearing passage (6) for receiving the stroke bar (2), wherein the bearing means (4) is mounted by an elastic secondary bearing element (8) in a receiving passage (7) in the housing (1).

Abstract: A thermoplastic board (20) comprising at least one smooth side edge (21) is produced by means of extrusion. The side edge of a synthetic web is heated at least to its melting temperature following calibration while the peripheral surface zones are kept at a temperature below the softening temperature by cooling. A smoothing device (10?) for a side edge of the thermoplastic board encompasses a guiding groove (14?) that is provided with at least one heating means (15?), located within the face (11?), and at least one respective cooling means (16?, 17?) located within the side surfaces (12?, 13?) that face each other. A cutting edge (21, 24) of a synthetic board (20) that can be guided inside the guiding groove (14?) rests against the face (11?) while the peripheral surface zones (22, 23) thereof lean against the side surfaces (12?, 13?).

Abstract: An electric power tool has a motor-driven circular tool that can be clamped by means of a clamping device. A mechanical braking device (2) serves to brake the tool. A safety element (4) prevents improper handling of the electric power tool. In a safety position, the safety element (4) prevents the motor from being turned on and activates the braking device (2). In a release position, the safety element (4) allows the motor to be turned on and the braking device (12) is released. An additional locking mechanism prevents that a clamping lever, needed to actuate the clamping device, can be actuated in the clamped state in the safety position. In the release position of the safety element, the locking mechanism is unlocked.

Abstract: An electrical hand-held power tool (2) includes an electric motor (4) with a stator (12), and a device (26) for reversing the rotational direction of the motor (4) and which has a contact carrier (28) fixedly securable on the stator housing with a releasable connection element and having field contacts (32) electrically connectable with the stator winding (14), and fixed contacts (42a, 42b) electrically connected with the field contacts (32), with the reversing device (26) also including a brush carrier (30) provided with carbon guides (48) and switching contacts (52a, 52b) electrically connected with the carbon guides (48) and electrically connectable with the fixed contacts (42a, 42b) of the contact carrier (28), the brush carrier (30) being rotatable relative to the contact carrier (28), and the stator housing (16) having an axial stop for the brush carrier (30).

Abstract: A holder (20a, 20b) is provided on a portable tool (2) having a housing (4), in which a transponder (26a, 26b) can be accommodated, which is a in particular part of an anti-theft system. The holder (20a, 20b) is, in the final assembled condition, delimited by an outer wall (18) of the housing (4) and at least on other structural element (16) of the tool (2), which after final assembly is applied to the outer wall (18).

Abstract: A chuck (2) for a hand-held power tool (4), which is connected with a motor-driven spindle (6) of the power tool for joint rotation therewith, includes a locking device for securing a shaft section of an exchangeable working tool and having a circular cross-section in the chuck (2) without a possibility of axial displacement and rotation relative to the chuck (2), with the locking device having a clamping element (12; 34) for securing the shaft section (8), and an element (18) for transmitting rotation to the shaft section (8) and rotationally separated from the clamping element (12; 34) by a rotary bearing (2).

Abstract: A quick-action locking device for an electric power tool including a locking spindle (4) axially displaceable in the hollow spindle (2) of the electrical power tool between a working tool locking position and a working tool exchange position, and a locking lever (6) provided at the end of the locking spindle remote from the working tool and having a slider cooperating with the locking spindle (4) for displacing the same, upon a pivotal movement of the locking lever (6), to its tool exchange position, with the slider (8) having a contact region engageable with a contact surface provided at the end of the locking spindle (4) remote from the working tool (3), and with the contact surface of the locking spindle (4) having an extent, in a pivotal direction of the locking lever (6), corresponding to at least the radial distance (a) of the contact region from the pivot axis (9) of the lever multiplied, in the locking position of the locking lever (6), by a sin (?) of an angle formed by a line, which defines the radi

Abstract: A protective hood assembly (6) for a tool machine (2) is formed of a housing with a protective hood (10), to a securing assembly (8, 8?, 8?) relative to the housing (4) in different rotary positions, wherein at least one lock-in part (30, 30?) is provided, which can be brought along a direction of installation (M) into a receiving region (36) of a locking housing (16) of the securing assembly (8) and at which, by rotating, can be brought into a bayonet-like engagement and wherein locking means (32, 32?) are provided on the protective hood, the locking means being capable of being locked in different locking positions with counter locking means (26, 26?) of the securing assembly (8). The receiving region (36) is limited on a side facing the housing (4) at least in part by an abutting wall (34, 34?, 34ä, 34?b), which is mobile.

Abstract: A quick-action clamping device for a power tool includes a clamping spindle (4) arranged in the hollow spindle (2) of the power tool, an elastic member (5) for biasing the clamping spindle (4) into its clamping poition, in which the working tool is claming between a claming flange (7) provided on a working tool-side end of the claming spindle (4) and the hollow spindle (2), an actuation element (24) for displacing the claming spindle (4) against the biasing force of the elastic member and into its exchange position in which the working tool (3) is released, and a compansator (15) for interrupting action of the elastic member (5) on the clamping spindle (4) in the exchange position of the clamping spindle (4).

Abstract: A movement conversion device (4) for a motor-driven, hand-held, power tool (2) for converting a rotational movement into a linear reciprocating movement includes an axially reciprocating spindle (10), a motor-driven driving gear (20), an eccentric member (16) displaceably supported on the driving gear (20) and extending into the connecting link guide (14) provided at a spindle end for converting the rotational movement of the driving gear (20) into the reciprocating movement of the reciprocating spindle (10), the eccentric member (16) having a first position with respect to a rotational axis (D) of the driving gear (20) in which a distance (a) between the eccentric member (16) and the rotational axis (D) is greater than in at least one second position of the eccentric member (16), and a load-controlled spacing device associated with the eccentric member (16) for automatically adjusting the distance (a) between the eccentric member (16) and the rotational axis (D) of the driving gear (20).

Abstract: An electric power tool has a motor-driven circular tool that can be clamped by means of a clamping device. A mechanical braking device (2) serves to brake the tool. A safety element (4) prevents improper handling of the electric power tool. In a safety position, the safety element (4) prevents the motor from being turned on and activates the braking device (2). In a release position, the safety element (4) allows the motor to be turned on and the braking device (12) is released. An additional locking mechanism prevents that a clamping lever, needed to actuate the clamping device, can be actuated in the clamped state in the safety position. In the release position of the safety element, the locking mechanism is unlocked.

Abstract: A protective hood assembly (6) for a tool machine (2) is formed of a housing with a protective hood (10), to a securing assembly (8, 8?, 8?) relative to the housing (4) in different rotary positions, wherein at least one lock-in part (30, 30?) is provided, which can be brought along a direction of installation (M) into a receiving region (36) of a locking housing (16) of the securing assembly (8) and at which, by rotating, can be brought into a bayonet-like engagement and wherein locking means (32, 32?) are provided on the protective hood, the locking means being capable of being locked in different locking positions with counter locking means (26, 26?) of the securing assembly (8). The receiving region (36) is limited on a side facing the housing (4) at least in part by an abutting wall (34, 34?, 34ä, 34?b), which is mobile.

Abstract: A motor-driven saber saw includes a housing (4), having a neck (8) which serves as a handle and has a tool opening (6), a guide device (22) for guiding the saber saw (2) on a workpiece and releasably connectable to the housing (4) in a region of the housing neck (8) and including a connection device (21) for connecting the guide device (22) to the housing (4), the housing (4) having connecting receptacles (18) for guiding the connection device (21), an adjusting device (30) mountable on the connection receptacles (18) for securing the connection device (21) to the housing, and a rectilinear spring member (36) for biasing the adjusting device (30) to a locking position and extending substantially in a longitudinal direction of the housing neck (8).

Abstract: A motor-driven saw has a gearing housing (4), which has at least two housing parts (6, 8), a stroke bar (10), which in operation executes a stroke movement in the direction of a stroke axis (26), and a reciprocating movement generator (36) that can be turned on or off, by virtue of which the stroke movement is superimposed with a reciprocating movement executed transverse to the stroke axis (26). All bearing zones (30, 44, 62) over which the reciprocating movement generator (36) is supported on the gearing housing (4) in a preferred direction of advance (16) of the saw, are arranged in the same carrying housing part (6).

Abstract: A motor-driven power saw (2) is formed of a housing (4), on which a guide assembly (9) for guiding the power saw (2) on a work piece is removably attached at a tool opening (5) in the region of a device collar (3), whereby the guide assembly (9) has a connecting assembly (10) having two connecting parts (14) and a connecting receptacle assembly (12) is formed on the housing (4), providing a guide for the connecting parts (14) and which can be secured at the connecting parts (14) by means of a form fit with an adjusting assembly (36) relative to the housing (4). The connecting parts (14) are formed rodlike and have a rounded cross-section at least regionally. The connecting parts (14) have a rodlike shape and, at least regionally, have a rounded cross-section.

Abstract: A reciprocating power saw, in particular a saber saw, with a housing (1), a motor-driven reciprocating stroke bar (2) that has a tool receptacle (3) at its free end, and a bearing means (4), which axially displaceably and pivotably bears the stroke bar (2) in the tool-side end zone of the housing (1). The bearing means (4) has a guide part (5) with a bearing passage (6) for receiving the stroke bar (2), wherein the bearing means (4) is mounted by an elastic secondary bearing element (8) in a receiving passage (7) in the housing (1).