Abstract: The invention relates to a The portable tool, in particular a tool for grinding or cutting, having a housing with a gear head, having a drive shaft which can be rotationally driven by a motor and can be coupled via a coupling drive to a tool spindle for the drive thereof, wherein the tool spindle can be driven rotatingly oscillating about the longitudinal axis thereof and is configured for receiving a tool wherein a vibration absorber is provided at the tool spindle, the vibration absorber having an absorption mass which encloses the tool spindle. Preferably the absorption mass is configured substantially in a ring segment shape and encloses the tool spindle by at least 180°, or even by 360°.

Abstract: A driver circuit for driving an electrical load includes an input terminal pole connecting the driver circuit to an AC voltage source, an output terminal pole connecting the driver circuit to the load, a rectifier circuit connected to the input terminal pole for converting an AC voltage into a pulsating DC voltage, and a control element connected to the rectifier circuit and to the output terminal pole. The control element has a switch and a controller, the controller switching the switch on and off by means of a pulse train signal, wherein an electrical output value of the driver circuit is adjustable by switching the switch. The controller is configured to vary at least one time-based value of the pulse train signal within one period of the pulsating DC voltage such that a driver current is adjusted at the output terminal pole having a defined waveform within the period.

Abstract: A device and a method for cutting through the adhesive bead of panes that have been fixed by bonding is specified, said device having a base body on which at least one suction plate for fixing on a pane to be separated out as well as one motor-drivable coil for winding-on a separating wire are accommodated, wherein at least two guide rollers are held on the base body by means of extension arms at a distance which is adjustable in respect to each other. The device is preferably positioned approximately diagonally on the pane in such a manner that the guide rollers are situated on the outer ends of the extension arms in the vicinity of the corner regions of the pane.

Abstract: Disclosed is a grinder, in particular an oscillating grinder, having a grinding spindle, to which a grinding tool can be attached, and having a housing, and having a dust extraction duct which can be attached to the housing by means of a pivot joint and a latching connection.

Abstract: A power screwdriver is disclosed, having a drive for driving a tool spindle having a controller for controlling the drive, having a monitoring device for monitoring the rotation speed or the torque, and having a monitoring device for monitoring a switch-off criterion, which monitoring device is coupled to the controller, in order to switch off the drive when the switch-off criterion is reached, with the controller being programmed such that (a) the drive is first of all accelerated until the rotation speed has reached a specific first rotation speed; (b) if the rotation speed then falls by at least a specific amount within a specific time increment, or the torque rises by at least a specific amount within a specific time increment, the drive is braked until the rotation speed has reached a specific second rotation speed, which is lower than the first rotation speed; (c) the drive is then regulated at the second rotation speed for a specific time; and (d) after step (c), the drive is accelerated again at most

Abstract: A core drilling machine having an axial extending hollow drill shaft supported rotatably in a housing and rotated by means of a drive unit; a coaxial tool holder receiving an axially displaceable drill bit, the tool holder having a locking mechanism securing the drill bit in a rotationally fixed manner to the hollow drill shaft; wherein the hollow drill shaft is suitable for receiving a shaft of an interchangeable centre drill, the center drill axially supported against a first spring element; and an axial stop element preventing in a first position a complete displacement of the center drill into the interior of the hollow drill shaft and allows in a second position a complete displacement of the center drill into the interior of the hollow drill shaft; and an activation device for activating the first or second positions of the stop element.

Abstract: A grinding device is specified, comprising a housing in which a tool spindle for driving a tool is mounted, comprising a protective hood which can be locked on the housing, and comprising means which allow the tool spindle and the protective hood to be locked. An actuating device is provided which is displaceable on the housing between a first position in which the tool spindle is released and the protective hood is locked against rotation and a second position in which the tool spindle is locked against rotation and the protective hood can be adjusted in the angular position thereof on the housing.

Abstract: A tool for parting, in particular for sawing, includes a carrier blade that has a toothing portion with a finite, geometrically determined toothing, and a receiver for fixing the carrier blade to a tool spindle of a power tool. The tool spindle can be driven in oscillation about its longitudinal axis. The toothing is disposed at a distance from the receiver and is configured to be advanced perpendicularly in relation to the longitudinal axis, such that the toothing is realized in a non-uniform manner along the toothing portion. The toothing portion has a middle region and end regions that adjoin the middle region and that are provided with strengthened corner teeth.

Abstract: A suction lifting tool for fastening an article on a surface of an object, the suction lifting tool having a bowed suction housing which is closed off towards one side by a suction disk, wherein a cavity is formed between the suction housing and the suction disk, and having a tension lever for reducing a spacing between the suction housing and the suction disk to generate a suction effect, wherein a ring-shaped sealing flange is securable on the suction disk, having an inside groove on the sealing flange into which the suction disk is insertable by way of its outside edge, and which has an elastic sealing face for abutment against the surface of the object in order to enable fastening to strongly bowed surfaces in this manner.

Abstract: An electric power tool comprises one or more optical waveguides which are combined with a shaped body so as to form a support element having a stable shape. The light guides may be part of optical switches or sensors. The support element ensures protection of the optical waveguides from vibrations, dust and so on, whereby a high level of operational reliability is ensured.

Abstract: An adapter for a power tool is disclosed which comprises a drive shaft that can be connected to an output shaft of the power tool in a rotationally fixed manner. There is a receiving connector on the power tool. On the adapter there is provided an assigned sleeve that can be pushed onto the receiving connector, and which comprises a clamping ring, which acts together with locking members in order to effect locking of the sleeve on the receiving connector when in a closed position, the clamping ring being held so as to be movable in the axial direction and being preloaded in the direction of the closed position. The locking members act together with the clamping ring in such a way that locking is effected automatically in the closed position when the adapter is pushed onto the power tool as far as the closed position, and a release of the adapter from the closed position can be effected through an axial movement of the clamping ring against its preload.

Abstract: The invention describes a device for guiding a saw blade, in particular a saw blade that is driven in an oscillating way, having a base body through which a guide slot extends for guiding a saw blade, which guide slot opens into a first guide surface configured as contact surface for the workpiece, having a stop which is supported on the base body and which comprises a second guide surface configured for being brought into contact with the workpiece and arranged at an angle relative to the first guide surface, and having a handle as means for holding the base body.

Abstract: A direct-current motor is disclosed, preferably in the form of an EC motor, which has a matching arrangement in order to vary its rotation-speed/torque characteristic, having a permanently effective control circuit for controlling the motor, which control circuit is programmed such that the rotation-speed/torque characteristic is permanently varied with respect to rated operation or operation with the matching arrangement.

Abstract: A power-driven hand-held tool is disclosed. It comprises a housing, a drive motor arranged in the housing and having a motor shaft that defines a longitudinal axis, a workspindle comprising a tool holding fixture arranged outside the housing for holding a tool, wherein the workspindle defines a spindle axis arranged at an angle relative to the longitudinal axis, wherein at least one battery unit is provided for supplying the drive motor with energy, wherein the drive motor is coupled to the workspindle for driving same oscillatingly about the spindle axis, wherein a center of gravity of the battery unit is located on a side of the longitudinal axis opposite the tool holding fixture.

Abstract: A device and a method for cutting through the adhesive bead of panes that have been fixed by bonding is specified, said device having a motor-drivable winding device, a coil for winding-on a separating means for cutting through the adhesive bead, a suction plate for fixing the winding device by means of negative pressure on a pane to be removed, wherein the winding device is mounted so as to be rotatable on the suction plate and wherein at least one guide roller for guiding the separating means is provided, which is preferably placed in a corner region of the pane in order to hold the cutting angle between separating means and adhesive bead extensively ?90° during the removal operation.

Abstract: The invention discloses a portable tool having a housing with a gearhead, having a motor shaft which can be rotationally driven by a motor and which can be coupled via an eccentric coupling drive to a tool spindle for the drive thereof, wherein the tool spindle can be driven in a rotational oscillatory manner about the longitudinal axis thereof and is configured for accommodating a tool, wherein a motion-reversal drive is provided which is configured for converting an oscillating drive movement produced by the eccentric coupling drive into an oscillating output movement which has a direction of oscillation opposed to said drive movement. The motion-reversal drive is configured as an epicyclic gearing.

Abstract: The invention discloses a coil for a winding-up device adapted for winding up a cutting wire used for cutting through an adhesive bead of a bonded-on pane, having a coil body for winding up the cutting wire, the coil body being provided with at least one opening for securing one end of the cutting wire.

Abstract: A cell holder for supporting battery cells, particularly rechargeable battery cells, inside a rechargeable battery housing of an electric power tool includes: a first cell holder half and a second cell holder half, wherein the first cell holder half is connected or connectable to the second cell holder half by a connector in a detachable or non-detachable way, wherein the first cell holder half has a first contact surface and an adjoining first surface and the second cell holder half has a second contact surface and an adjoining second surface, wherein the first contact surface is formed with a first oversize raised from the first surface and/or the second contact surface is formed with a second oversize raised from the second surface, wherein in the connected state the first contact surface rests on the second contact surface and the first surface is arranged opposite the second surface.

Abstract: A series-wound DC motor is disclosed comprising a stator having at least two poles and an armature, each pole comprising at least one field winding which is connected in series with an armature winding, and further comprising at least one permanent magnet arranged on each pole, whose magnetic field is superimposed on the main field produced by the at least one field winding.