Abstract: The invention relates to a battery pack, especially for a hand-held power tool. Said battery pack comprises a battery housing (10) and an electronic unit (16) housed in said battery housing (10). The electronic unit (16) has one or more light sources (18). A first light-guiding element (28) can be inserted into the battery housing (10) and interacts with the at least one light source (18) in such a manner that the light emitted by the at least one light source (18) can be injected into the first light-guiding element (28).

Abstract: The invention relates to a battery-operated electric hand tool device (2) comprising control electronics (14), a wirelessly and contactlessly responding transceiver (12), and a storage unit (16) in which an authorization code is stored, a locked mode of operation and a released mode of operation being distinguishable. In order to improve theft protection, a wire-bound or wireless interface (22) is provided from the control electronics (14) of the electric hand tool device to a battery pack (4) such that locking data can be transmitted from the control electronics (14) of the electric hand tool device (2) to the battery pack (4), be stored in a storage device (24) of the battery pack (4), and be read out of the storage device (24) again.

Abstract: The subject matter of the invention is a machine stand with an elongated support body and support legs arranged at the ends on the support body, the support body being designed with positive engagement means running in the longitudinal direction, such that attachments, in particular at least one machine holder, optionally displaceable in the longitudinal direction, can be attached thereto. According to the invention, this machine stand is characterized in that the support body is embodied in one piece as a double-pipe profile, with two profile pipes running parallel to one another with lateral spacing from one another, and at least one center ridge connecting the profile pipes.

Abstract: A rapid locking device axially secures a disc-type tool (16), in particular a grinding disc on the flange (24) of a driven spindle (14), the spindle (14) having an axial bore containing at least one locking element in the form of a plate spring (28), which co-operates with a locking pad (22). The tool can be locked between contact surfaces of the flange (24) and the locking pad (22), the distance between said surfaces being modifiable. The shank (30) of the locking pad (22) can be accommodated in the bore of the spindle (14) and can be secured in a friction fit by the locking element (20).

Abstract: A rotor (2) for a forced-air-cooled electric motor, in particular a universal motor, especially for use with electrical power tools, has a laminated armature (6) incorporating longitudinal slots (8) and with wire windings of a coil (10) protruding from the longitudinal slots (8) on the front face where the windings form coil connecting heads (20, 22). Some or all of the longitudinal slots (8) in the laminated armature (6) contain a rod (28) aligned in the longitudinal direction and protruding axially from one or both front faces (24, 26) of the laminated armature (6), whereby the protruding rod ends thus surround the coil connecting heads (20, 22) on the respective front face to protect the coil connecting heads from abrasive wear.

Abstract: A cutoff/milling device with a motor-driven cutoff/milling element, a work support surface or a guide surface, and a light projection device, the light projection device projecting a light beam onto a workpiece which is located on the work support surface or under the guide surface such that the light beam marks the cutting/milling position or cutting/milling path on the workpiece. The light projection device has a switch for activation of the light projection in response to mechanical vibration produced either by operating of the device or manual knocking on the cutoff/milling device.

Abstract: The invention relates to an impact wrench having a drive motor for driving a drive shaft (10) and an output shaft (38) that can be coupled to a tool holder, and having an impact mechanism, the impact mechanism comprising an anvil (36) that has first impact cheeks (34) and that is coupled to the output shaft (38), and comprising a hammer, which is guided on the drive shaft (10), the hammer having second impact cheeks (24), which engage with the first impact cheeks (34) for the purpose of rotary transmission, wherein the hammer comprises a rotating mass (22) and a control part (20), the control part (20) carrying the second impact cheeks (24) and rotating with the drive shaft (10) in the case of non-impact and, in the case of impact, executing an axial and, preferably, additional, rotational oscillation relative to the drive shaft (10), the control part (20) transmitting the rotation of the drive shaft (10) to the rotating mass (22) and being movably guided in the axial direction in the rotating mass (22) for t

Abstract: An electrical hand tool device (2) comprises a ventilated housing body (4), which has inlet and outlet openings (6, 8) for cooling air flow and accommodates the electromotive components (12) of the device, in particular, a motor (14) that is excited by a permanent magnet and is powered by a battery, and a magnet (22, 24) that is provided in the area of the cooling air flow for absorbing magnetic or magnetizable dust. In order to protect the electric motor, the device is designed in such a fashion that at least two magnets (22, 24) are provided in the axial direction (26) between the inlet openings (6, 8) and the electromotive components (12) of the device, and a means (30) is provided, which electrically cooperates with the at least two magnets (22, 24) to determine whether a substantial amount of magnetizable dust has collected on the magnets (22, 24), in which case, a control measure can be performed.

Abstract: A rechargeable battery pack (20), in particular, for use with electrical hand tool devices, comprises a first and a second charging connection (24, 26), and a third control connection (28), all three being connectable to a charging device (46) for producing a charging connection, and with a calculating means (30) which can be addressed via an interface circuit (32), wherein the interface circuit uses the third control connection (28). In order to prevent destruction of the rechargeable battery pack due to erroneous charging, a non-linear component (34) is disposed in the interface circuit (32) which, upon control of the interface circuit (32) by the charging device (46), can be distinguished from an NTC component, thereby permitting detection of the rechargeable battery type when the calculating means (30) provides no identification information in response to control by the charging device (46).

Abstract: An electric motor-driven screw driving or drilling tool device with a planetary gear, comprising a ring gear and planet wheels mating with the ring gear, wherein the ring gear can be locked and fixed relative to the housing via locking bodies which are pretensioned by springs in a radially inward direction, the locking bodies being radially outwardly displaceable when a switch-off torque has been exceeded, such that the ring gear can be rotated relative to the housing, and the drive shaft is no longer driven. In order to improve the ease of operation of the device and reduce its size, the invention proposes leaf springs which extend in the peripheral direction of the ring gear, whose lever arm lengths can be adjusted in a peripheral direction to generate different bending forces acting on a respective locking body.

Abstract: The invention relates to an electrical hand tool device, in particular an angle grinder with a machine housing for holding a motor for the rotating drive of a drive shaft and a driven shaft connected with it via an angular gear for attaching a grinding tool at its free end, whereby a protective guard (12) that surrounds the grinding tool with a base body (14) at least partially and exhibits a protective guard neck (16) that is connected to the base body (14) and that can be detached together with said protective guard neck at a flange (20), which is positioned at the machine housing, and can be secured and locked in discrete adjustable rotational positions at the flange (20), whereby the protective guard (12) can be secured and locked at the flange (20) in a rotational position using a notch lever (18), and where for this purpose a ratchet cam (42) at the notch lever (18) reaches through an opening (40) in the protective guard (12), where a pivoting axis (22) of the notch lever (18) is arranged parallel to th

Abstract: The subject matter of the invention is a machine stand with an elongated support body and support legs arranged at the ends on the support body, the support body being designed with positive engagement means running in the longitudinal direction, such that attachments, in particular at least one machine holder, optionally displaceable in the longitudinal direction, can be attached thereto. According to the invention, this machine stand is characterized in that the support body is embodied in one piece as a double-pipe profile, with two profile pipes running parallel to one another with lateral spacing from one another, and at least one center ridge connecting the profile pipes.

Abstract: The subject matter of the invention is a machine stand with an elongated support body and support legs arranged at the ends on the support body, the support body being designed with positive engagement means running in the longitudinal direction, such that attachments, in particular at least one machine holder, optionally displaceable in the longitudinal direction, can be attached thereto. According to the invention, this machine stand is characterized in that the support body is embodied in one piece as a double-pipe profile, with two profile pipes running parallel to one another with lateral spacing from one another, and at least one center ridge connecting the profile pipes.

Abstract: The subject matter of the invention is a machine stand with an elongated support body and support legs arranged at the ends on the support body, the support body being designed with positive engagement means running in the longitudinal direction, such that attachments, in particular at least one machine holder, optionally displaceable in the longitudinal direction, can be attached thereto. According to the invention, this machine stand is characterized in that the support body is embodied in one piece as a double-pipe profile, with two profile pipes running parallel to one another with lateral spacing from one another, and at least one center ridge connecting the profile pipes.