Abstract: A hand-power tool, in particular a drill and/or chiseling hammer, includes a transmission, a machine housing, and an inner housing arranged within the machine housing. The inner housing is provided for at least partially receiving at least one transmission element of the transmission. The at least one transmission element is supported jointly by the inner housing and by the machine housing.

Abstract: A hand-power tool, in particular a drill and/or chiseling hammer, includes a transmission, a machine housing, and an inner housing arranged within the machine housing. The inner housing is provided for at least partially receiving at least one transmission element of the transmission. The at least one transmission element is supported jointly by the inner housing and by the machine housing.

Abstract: An electric hand-held power tool has a housing, a double-shelled handle attached axially to the housing, a selector ring pivotably located in the housing, and an actuating element supported by the selector ring and swivelable manually. The housing and the handle have a line connecting domes oriented parallel to an axis of the housing and located in a parting plane region between the housing and the handle for receiving connecting units. The connecting domes include centering elements for guiding and exactly positioning the handle shells when the handle shells are attached individually to the housing.

Abstract: An electric motor includes carbon brushes (5) disposed in a holder (6) that are pressed by means of a spring force (7) in a radial direction against a jacket face of a cylindrical collector (4) that is fixed to an armature shaft (2) of the motor. The holder (6) for the carbon brushes (5) can be removed from the motor with little effort as a result of a provision of covering means (11, 12) that cover a pivot bearing (3) of the armature shaft (2) to protect it against the entry of dirt on a side of the covering means (11, 12) facing the holder (6) for the carbon brushes (5), provided with one or more chamfers (14, 15) in such a way that the carbon brushes (5) slide over the covering means (11, 12) as the holder (6) is being pulled off and that the carbon brushes (5) thereby are thrust radially outward counter to the spring force (7).

Abstract: A power tool has an electric motor, a brush element that is supported rotatably for switchover between clockwise operation and counterclockwise operation of the electric motor and includes a brush holder, and a switch unit, embodied separately from the brush element and connected in form-locking fashion to the brush element, which switch unit has an actuating element for actuation by a user, can be slipped in the axial direction onto the brush element, located on the electric motor, and is connected in the axial direction to the brush element.

Abstract: An electric hand-held power tool has a housing, a double-shelled handle attached axially to the housing, a selector ring pivotally located in the housing, an actuating element supported by the selector ring and swivelable manually, the housing and the handle including a line connecting domes oriented parallel to an axis of the housing and located in a parting plane region between the housing and the handle for receiving connecting units, the connecting domes including centering elements for guiding and exactly positioning handle shells when the handle shells are attached individually to the housing.

Abstract: An electric hand tool is disclosed which has a gt (15), received in a housing (10), with a gear shaft (20) and also has at least one radial bearing (30) for rotary support of the gear shaft (20), the inner bearing ring (301) of the radial bearing being fixed on the gear shaft (20) and the outer bearing ring (302) of the radial bearing being fixed in a bearing box (31) disposed in the housing (10), in each case being fixed axially nondisplaceably. For simple assembly of the gt (15) without tools, the outer bearing ring (302) of the radial bearing (30) rests with a sliding seat in the bearing box (31) and is fixed by means of a clamping bracket (32) fixed to the bearing box (31).

Abstract: The carbon brushes (5) disposed in the holder (6) are pressed by means of spring force (7) in the radial direction against the jacket face of a cylindrical collector (4) that is fixed to the armature shaft (2) of the motor. The holder (6) for the carbon brushes (5) can be removed from the motor with little effort as a result of the provision that means (11, 12), which cover the pivot bearing (3) of the armature shaft (2) to protect it against the entry of dirt, are provided, on their side toward the holder (6) with the carbon brushes (5), with one or more chamfers (14, 15) extending such that as the holder (6) is being pulled off the carbon brushes (5) slide over them and in the process are thrust radially outward counter to the spring force (7).

Abstract: A power tool has an electric motor, a brush element that is supported rotatably for switchover between clockwise operation and counterclockwise operation of the electric motor and includes a brush holder, and a switch unit, embodied separately from the brush element and connected in form-locking fashion to the brush element, which switch unit has an actuating element for actuation by a user, can be slipped in the axial direction onto the brush element, located on the electric motor, and is connected in the axial direction to the brush element.

Abstract: The invention is based on an electrical machine with a rotatable brush plate (10, 12), which is held in its end positions by means of at least one holding mechanism (16, 18) that acts in the circumference direction (14). The invention proposes that the holding mechanism (16, 18) have at least one device (20, 22) that loads the brush plate (10, 12) in the circumference direction (14).

Abstract: An electric hand tool is disclosed which has a gt (15), received in a housing (10), with a gear shaft (20) and also has at least one radial bearing (30) for rotary support of the gear shaft (20), the inner bearing ring (301) of the radial bearing being fixed on the gear shaft (20) and the outer bearing ring (302) of the radial bearing being fixed in a bearing box (31) disposed in the housing (10), in each case being fixed axially nondisplaceably. For simple assembly of the gt (15) without tools, the outer bearing ring (302) of the radial bearing (30) rests with a sliding seat in the bearing box (31) and is fixed by means of a clamping bracket (32) fixed to the bearing box (31).

Abstract: The invention is based on an electrical machine with a rotatable brush plate (10, 12), which is held in its end positions by means of at least one holding mechanism (16, 18) that acts in the circumference direction (14).

Abstract: A multi-speed transmission for electrical power tools with a rotatable tool has a machine housing, a working spindle supported in the housing for rotating the tool, an electric motor, a gear reducer shaft which is driven by the electric motor, a planetary transmission arranged between the working spindle and the gear reducer shaft, the planetary transmission including a sun gear, planetary gears and a planetary gear carrier, the planetary gear carrier being coupled with the gear reducer shaft, the sun gear being formed switchably so that it is coupled for joint rotation with the machine housing for a slower speed and with the working spindle for a faster speed.

Abstract: A combination of an insertable tool (2), e.g. a drill or chisel, for an electrical machine for drilling and/or impact operation and a tool holder (20) for the insertable tool is disclosed. The insertable tool includes a tool shaft (11) provided with a round core cross section (1) not weakened or reduced at any point along the tool shaft (11) up to an inserted tool shaft end. The tool shaft has longitudinal struts (6) for torque transmission and axial guidance extending beyond the round core cross section (1) and the longitudinal struts (6) are shaped to merge with the core cross section in front of a cylindrical end portion (3).

Abstract: A tool holder and an associated tool with the shank are provided for a drilling and/or striking machine tool. The tool holder has a drive spindle with a receiving opening provided with a cone for centering and a portion for driving the tool. Dumbbell-shaped locking elements are guided with their inner ends in a passage and with their outer ends in a longitudinal groove. The outer ends engage in pockets in an axially displacable locking sleeve which is prestressed by a spring in the direction toward its locking position.

Abstract: A drilling device for drilling with diamond tools has a drilling head having a drilling head housing, a drilling shaft rotatably supported in the housing, the drilling shaft having a tool side and being provided with a receiving opening for a drilling tool and extending from the tool side, the drilling shaft being formed as a hollow shaft over a part of its axial length, a drive having a rotary spindle, coupling means for connecting the drilling shaft with the rotary spindle of the drive, the drilling shaft being provided with at least one radial interruption for connecting an interior of the drilling shaft with an interior of the drilling head housing, the drilling head housing having an opening for selective connection of a supply conduit for a cooling/lubricating medium and a suction conduit for drilled material, and a clamping element for releasably connecting the drilling head with a clamping neck of the drive.

Abstract: A device for driving-in stitches, has a magazine for receiving stitches of different widths and having a housing for accommodating stitches, a slider insertable in the housing and having a guiding rail for guiding stitches and a shooting passage with an opening, an end plate mounted on the casing and a stripping plate mounted on the slider and limiting the opening of the shooting passage. The stripping plate is formed as an angular piece with a first leg which limits the shooting passage and a second leg extending substantially perpendicularly to the first leg and abutting against the slider.

Abstract: A hand held power tool has a rotatable spindle, a tool holder arranged on the spindle, a tool inserted in the tool holder, locking members fixing the tool holder with the spindle and engaging both in the tool holder and the spindle, a rotatable ring holding the locking members in its locking position and provided with depressions for receiving the locking members not locking position, and a gripping sleeve connected with the ring and operating simultaneously as an actuating member for unlocking the tool inserted in the tool holder.

Abstract: A power impact device, particularly for fasteners, comprises a propelling passage, a driver movable in the propelling passage, a magazine for fasteners and crossing the propelling passage, and an abutment arranged for positioning a set of fasteners for separating a frontmost fastener by the driver, the abutment being formed so that only a part of the cross-section of the set of fasteners is supported and so that it is displaceable relative to the propelling passage, the driver having a cross-section which deviates from a cross-section of the propelling passage over a fit tolerance so as to allow narrowing of the propelling passage without preventing movement of the driver and reducing its thickness.

Abstract: In a drill hammer a motor driven striking mechanism is provided with two air cushions of changeable volumes, through which impact energy is transmitted from the motor to a reciprocating striker which in turn transmits the energy to a tool of the drill hammer. When the striker moves in the direction towards the tool both air cushions act on the striker whereas when the striker moves away from the tool only one of two air cushions acts on the striker.