Abstract: A first actuating element acts on a blocking device for an operator-controlled element for controlling the drive motor. In an enabled position of the blocking device, the operator-controlled element is enabled to control the drive motor. In a blocking position the blocking device mechanically blocks any actuation of the operator-controlled element. The first element acts on the blocking device via a transfer unit. In an actuated position of a second actuating element, the transfer unit establishes an operative connection between the first element and the blocking device, such that the blocking device is in the enabled position in the actuated position of the first element and is in the blocking position in the non-actuated position of the first element. In the non-actuated position of the second actuating element, the transfer unit is ineffective so that the blocking device is in the blocking position regardless of the first element's position.

Abstract: A system (S) has at least a first and a second self-driving ground working device for combined working of a predetermined operating region (A). An individual ground working device travels autonomously along a random path inside the operating region. The system has at least one base station for communication with the ground working devices. For a method for setting up and operating the system, provision is made that information relating to an operating variable (B) stored in one ground working device is transmitted to further ground working devices, that a ground working device travels autonomously along a random path (W) inside the operating region, independently of another ground working device, by using the operating variable, and that during the operation of the system of ground working devices the behavior of an individual ground working device is adapted as a function of changes in the operating variable.

Abstract: A method for operating an electric gardening and/or forestry apparatus system having an accumulator, a gardening and/or forestry apparatus with an electric motor, and a protective electronic circuit including inputs which are connected to the accumulator, outputs which are connected to the gardening and/or forestry apparatus, and a switching element which is disposed in a power path between one of the inputs and one of the outputs.

Abstract: A rechargeable battery pack includes an external housing with a housing base and a housing hood, connected to the housing base and surrounding an interior space, and a rechargeable battery cell block arranged in the interior space. The battery pack has a water discharge structure for discharging water contained in the interior space and/or water entering the external housing from the outside. The water discharge structure has, on one side of the external housing, a double-labyrinth wall structure which is open to liquid. An outer labyrinth wall structure is formed by overlapping respectively of an outer side wall of the housing base and housing hood. An inner labyrinth wall structure, which is arranged offset in relation to the outer labyrinth wall structure in the direction of the interior space, is formed by overlapping respectively of an inner side wall of the housing base and housing hood.

Abstract: A closure cap for an operating medium tank is provided with a closure device projecting into a fill socket of the operating medium tank. The closure device has a first cap element, a second cap element, and a sealing ring arranged between the first and second cap elements. A lifting assembly axially moves by an axial travel the first and second cap elements relative to each other for opening and closing the fill socket. The lifting assembly has a pressure member acting axially on one of the first and second cap elements. A grip member is provided that is rotatable about a hub and actuates the lifting assembly. A cover disk covering at least partially the fill socket relative to an exterior is connected fixedly to the pressure member of the lifting assembly. The cover disk rotates, together with the pressure member, about the hub.

Abstract: A harness has a support base and a support strap unit for the support base, and a holding device for releasably holding a battery pack in a support position on the support base. The holding device has a docking mechanism on the support base for pivotably docking the battery pack in a docking position, and a securing mechanism for securing the battery pack in the support position pivoted in towards the support base with respect to the docking position. The docking mechanism is arranged on a lower region of the support base, and the securing mechanism has a securing slide which is arranged displaceably on the support base between a release position and a securing position and has a securing hook, or a securing lever which is arranged pivotably on the support base between a release position and a securing position and has a securing bow. The securing hook or securing bow is designed to engage securely behind a corresponding mating securing element of the battery pack in the support position.

Abstract: A ground working system having at least one self-driving ground working device, wherein the ground working device has a drive, a control unit and an in-device battery for supplying energy to the ground working device. An operating region (A) determined by an edge boundary is provided for the ground working device, wherein the ground working device travels over an operating path (W) determined by the control unit within the operating region (A). In order to meet requirements for a differing working intensity of specific regions of an area, it is provided to predetermine at least one intensive limit, an intensive limit in each case demarcating an intensive region (B). The ground working device in an intensive mode works the intensive region (B) with preference.

Abstract: The invention relates to an electrical work apparatus including an apparatus housing having an electric motor for driving a work tool, a control unit for putting the electric motor into operation, a handle housing having at least one handle for guiding the work apparatus, and a receiving cavity, realized in the handle housing, having an insertion opening for a battery pack for operating the electric motor. For the purpose of decoupling the battery pack in respect of vibration, the handle housing, together with the receiving cavity for the battery pack, is decoupled from the apparatus housing via one and the same antivibration element. A vibration gap is realized between the apparatus housing and the handle housing, wherein the antivibration element at least partly bridges the vibration gap.

Abstract: An electronic control unit is configured to operate an electric motor from a rechargeable battery pack. The control unit has a circuit board with electronic components for driving the electric motor. Furthermore, an electrical braking circuit having a braking resistor and also a braking switch is provided. The receiving surface of the circuit board is spatially divided into a first surface region and a second surface region. The first surface region serves to receive electronic components; the second surface region serves to receive the braking resistor, wherein the braking resistor is configured as a conductor track which is formed on the circuit board.

Abstract: An arrangement includes an output shaft, a cutting head, at least one cutting tool arranged on the cutting head, and a hood. The cutting head is mounted on the output shaft by a screw element held in a rotationally fixed manner on the cutting head. The hood is held on the output shaft in a rotationally fixed manner, and has ribs in the inner region, and a first grip region in the outer region.

Abstract: The disclosure relates to a file for filing a saw tooth of a saw chain. The file includes a file body defining a circumferential direction and a circumference. The file body, in a cross section, has an unhewn guide surface and a file surface adjoining the unhewn guide surface in the circumferential direction. The unhewn guide surface extends over at least ? of the circumference in the cross section.

Abstract: A method obtains a pollution condition of at least one component of a gardening and/or forestry apparatus. The method includes the steps of: obtaining at least one pollution parameter which describes at least one source of pollution prevalent during an operation of the gardening and/or forestry apparatus; obtaining the pollution condition of the component based on the obtained pollution parameter; and outputting and/or transmitting information based on the obtained pollution condition.

Abstract: A ground working system includes at least one self-driving ground working device having a drive, a control unit and a battery. An operating region is determined by a boundary wire, wherein the ground working device travels over a traveling path determined by the control unit in the operating region. Connected to the boundary wire is a first base station, which transmits a signal on the boundary wire. The electromagnetic field of the signal induces a reception signal in the reception coil of the ground working device. The reception signal is processed in the control unit. In order to make a stable signal available over the entire length of the boundary wire, it is provided that the boundary wire is electrically connected to a further base station configured as a repeater, which receives the signal transmitted by the first base station, processes it and passes it on.

Abstract: A handheld work apparatus includes a drive motor, an operating-fluid tank and a motor carrier on which the drive motor is held. The operating-fluid tank has a first housing section and a second housing section. The first housing section is realized so as to be integral with the motor carrier. At least a portion of the second housing section is formed from light-transmitting material to permit discerning the fill level of the operating-fluid tank. The motor carrier has a light-transmitting light conductive element for conducting light into the operating-fluid tank.

Abstract: A green area maintenance system includes an autonomous mobile green area maintenance robot having a treatment tool and a cutting tool differing from the treatment tool. The robot and the cutting tool are configured to allow fixing of the cutting tool to the robot. The system includes a user control device, and has an autonomous operation mode and a cutting operation mode. In the autonomous operation mode the autonomous mobile green area maintenance robot with its treatment tool operates autonomously and the cutting tool is set out of operation, and in the cutting operation mode the cutting tool is fixed to the green area maintenance robot and operable. The robot with its treatment tool and cutting tool are controlled by a user via the user control device, and an operation mode switching device for switching between the autonomous operation mode and the cutting operation mode.

Abstract: A starting device for a combustion engine includes a housing relative to which a rope pulley, a spring housing and an entrainer can rotate about a rotation axis. A coupling unit produces a rotationally-fixed connection between the rope pulley and the spring housing in response to a rotational movement of the rope pulley in a starting direction. The spring housing has a spring receiving space for a tension spring and is connected to an entrainer by the spring. The coupling unit has a first coupling element and a second coupling element, which interact at a contact location which is at a spacing (d) to the rotation axis and is at least as large as the maximum spacing (c) of the tension spring to the rotation axis.

Abstract: A ground working system includes at least one self-driving ground working device having a drive, a control unit and a battery. An operating region is determined by a boundary wire, wherein the ground working device travels over a traveling path determined by the control unit in the operating region. Connected to the boundary wire is a first base station, which transmits a signal on the boundary wire. The electromagnetic field of the signal induces a reception signal in the reception coil of the ground working device. The reception signal is processed in the control unit. In order to make a stable signal available over the entire length of the boundary wire, it is provided that the boundary wire is electrically connected to a further base station configured as a repeater, which receives the signal transmitted by the first base station, processes it and passes it on.