Abstract: A power tool has a base for supporting the power tool on a surface. A frame is supported on the base and includes a track that extends longitudinally along the frame. A fixed gib is attached to one side of the frame and a movable gib is attached to the other side of the frame. The movable gib can move with respect to the frame. A slide is positioned between the fixed gib and the movable gib for longitudinal movement with respect to frame and is constrained from lateral movement by the fixed gib and the movable gib.

Abstract: An adapter is disclosed for mounting a tool on an oscillating drive having a drive shaft that can be driven to oscillate about its longitudinal axis, wherein the adapter is passed by a central opening, and has at its drive end at least one positive-locking element for positive connection with the tool, the positive-locking element having the shape of a regular polygon, or a plurality of positive-locking elements arranged on a circle concentric to the center axis, or a plurality of outwardly extending convex projections having rounded tips and being connected with neighboring projections via rounded concave lateral flanks, wherein the positive-locking elements on the drive end are configured for positive-locking connection with a matching positive-locking counter-element on the drive shaft, and wherein the adapter has a second receptacle on its tool end for effecting connection with a tool having a shape different from the first receptacle and being configured as a circle, or as a plurality of positive-locking

Abstract: The invention describes a method of guiding a saw blade using a device, 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 drilling machine, in particular a core hole drilling machine, having a mount on which an electromagnet is provided for attachment to a metal part on which a drilling unit is supported in displaceable fashion, wherein the drilling unit has a housing that accommodates an electric motor for driving a tool, is provided. There is provided a controller having at least one switch for switching on and off the electric motor and the electromagnet. The controller includes an operating and supervisory panel that is supported on an end of the housing opposite the tool. The switch for switching on and off the electromagnet and for switching off the electric motor is designed so that in the activated condition of the electric motor any operation of the controller will first cause the electric motor to be switched off before the electromagnet can be switched off.

Abstract: A material removing tool, such as a cutting or grinding tool, adapted to be oscillated by the output shaft of a manually operable motor-driven apparatus, is provided with at least one elongated cutting edge defined by teeth or analogous cutting elements arranged in at least one at least substantially straight linear array.

Abstract: A magnetic drilling stand is disclosed having a drilling unit (20), having an electromagnet (14) for fixing the magnetic drilling stand (10) on a component (12), having a voltage source which can be coupled to the electromagnet (14), and having a controller (28) for monitoring the holding force of the electromagnet (14), with the controller (28) having a device for monitoring the current level of the electromagnet (14), in order to identify a fault state or an adequate magnetic holding force, with a signal for an adequate magnetic holding force being produced only if, within a test phase, the current level of the electromagnet is below a respectively predetermined threshold value at at least two predetermined times after the start of the test phase.

Abstract: The invention relates to an electrical drive having a motor with a rotor and a stationary stator, which has a coil arrangement, and having a motor controller for controlling the motor, with the motor controller being configured to pass current through the coil arrangement in order to produce an excitation field, with the coil arrangement having a plurality of coil winding sections, and with each coil winding section having a plurality of coil sections, wherein the polarity of at least one coil section of the plurality of coil sections of each coil winding section can be selectively reversed with respect to the other coil sections of the coil winding section. The drive is particularly suitable for use for an electrical tool.

Abstract: The invention relates to a method for decelerating a drive movement of a power tool and to a power tool suitable for carrying out the method, having a drive driven by a motor, an energy supply device for the provision of electrical energy, a controller having a motor controller for activating the motor and an operating-state recognition module which is to detect at least one operating-state variable and, as a function of this, to output a brake signal, the controller being designed to initiate, as a function of the brake signal, a braking procedure in which brake cycles are provided which have a first time segment, in which the motor is short-circuited, and a second time segment in which current is fed to the motor opposite to its original direction of rotation.

Abstract: A keyless arbor device for securing a tool, such as a drill bit, to a driver. At least one drive key is pivotally combined with the arbor. A threaded member and an outer sleeve are combined with an arbor. Rotation of the outer sleeve in a first direction causes the threaded member to move in a first direction and rotation of the outer sleeve in a second direction causes the threaded member to move in a second direction. The drive key is positioned so that as the threaded member is moved in its second direction, the threaded member makes contact with the drive key which forces the drive key to pivot from its first position to its second position thereby engaging the shank of the tool to secure the tool with the arbor.

Abstract: A hand tool is disclosed, comprising a housing, a motor shaft being coupled to a drive motor, a working spindle configured for being driven rotatingly oscillatingly about its longitudinal axis, and a coupling element being driven rotatingly by the motor shaft and having a closed guide surface that revolves around the motor shaft. The guide surface is coupled, via transmission means, to at least one driver for driving the latter. The at least one driver is arranged movably relative to the working spindle and engages the working spindle at a circumferential region thereof for driving the latter rotatingly oscillatingly.

Abstract: An oscillating tool comprises a housing that accommodates a motor which for driving a tool is coupled with a drive shaft via an oscillation drive, for driving it about its longitudinal axis rotatingly oscillatingly. For reducing vibrations, there is provided an inertial mass that is movably held on the housing via at least one spring element.

Abstract: An optical control is disclosed which is particularly suitable for application as a switching device, regulating device or sensor device for a power tool. At least two optical waveguides are provided one of which being configured as a transmitting waveguide is coupled to a light source, a second one of which being configured as a receiving waveguide cooperating therewith is coupled to an evaluation circuitry. Both waveguides cooperate with a control element that is movable at least between two positions in which light signals of different magnitude are transmitted from the transmitting waveguide into the receiving waveguide.

Abstract: A method and a charging device serve for charging rechargeable lithium accumulators. A charging current is injected into the accumulator, and the voltage is monitored on the accumulator during the injection process. Additionally, the variation in time of at least one state variable characteristic of the accumulator is monitored and injection of the charging current into the accumulator is continued until the variation in time of the state variable exceeds a predefined limit value.

Abstract: A power-driven hand tool is disclosed comprising a housing, a work spindle for driving a tool, which tool can be located between a tool end of the work spindle and a fixing mechanism, further comprising a displacing mechanism with a clamping lever, adapted to pivot about a pivot axis for displacing the fixing mechanism between a releasing position, in which the fixing mechanism can be released from the work spindle, and a clamping position in which the fixing mechanism is clamped on the work spindle by a spring. An impeding mechanism is provided that interacts with the clamping lever for impeding the pivoting movement of the clamping lever between the releasing position and the clamping position.

Abstract: The invention discloses a device for cutting through an adhesive bead of a vehicle pane, in particular a windshield, having a motor-driven winding-up device that comprises a coil for winding up a cutting wire in a working direction for cutting through the adhesive bead, the winding-up device being provided with a strain relief for the cutting wire which allows the cutting wire to be withdrawn from the winding-up device in a sense opposite to the working direction.

Abstract: A power-driven hand tool comprises a drive spindle adapted to drive a tool, that can be driven to oscillate about its longitudinal axis, which tool can be fixed on a retaining section of the dive spindle by a securing element, and further comprises a displacing device that serves to displace the securing element between a releasing position in which the securing element can be released from the drive spindle and a clamping position in which the securing element is clamped on the retaining section by a spring element, the securing element comprising a clamping shaft adapted to be inserted into the securing element, which is axially fixed in the drive spindle for clamping the tool in the clamping position, and which can be detached in the releasing position. For clamping of the tool a split chuck is provided which is clamped on the retaining section by the securing element in the clamped position and is connected with the retaining section in form-locking engagement.

Abstract: The invention discloses an oscillatingly driven machine tool, having an oscillatory drive for driving a drive shaft about its longitudinal axis, having a flange provided on the drive shaft against which an oscillatory tool can be clamped by spring force via a counter flange, and having a displacing mechanism for displacing the counter flange between a working position in which the oscillatory tool is clamped by a spring between the flange and the counter flange and a released position in which the counter flange can be detached from the flange.

Abstract: A method and a device for the production of a bore with a special shape, for example a bore which deviates from a cylindrical shape or a bore with an undercut. First, a first bore portion is produced using an oscillatingly driven tool, the first bore portion having a shape deviating from a cylinder and having at least one projection projecting from the wall face of the first bore portion towards the bore center. Subsequently, when a bore with an undercut is to be produced, the tool is then at least partially rotated about its longitudinal axis, in order to produce a second bore portion which has a larger cross section than the first bore portion.

Abstract: A device and a method are disclosed for severing a bead of adhesive of a motor vehicle window pane. A cutting wire is firstly introduced into a gap between the window pane and the body flange, the cutting wire then being guided around the bead of adhesive, one first end of said cutting wire preferably being fixed outside the vehicle, preferably to the windshield wiper shaft, the second end of the cutting wire being inserted through the bead of adhesive and fixed to a winding device, and the bead of adhesive is severed by means of the cutting wire by reeling in the cutting wire with the aid of the winding device.