Abstract: A device for starting an internal combustion engine for hand-held tools, chainsaws, lawnmowers, trimmers and the like, includes a rotatable pulling medium roller which can be brought into functional connection with the crankshaft of the internal combustion engine in order to bring about a rotation of the crankshaft. The starting device has a simply configured functional connection between the crankshaft and the pulling medium roller and effectively reduces the force peaks reaching the pulling medium roller. To accomplish this, a deformation body having elastic deformation behaviour is arranged in the functional connection between the pulling medium roller and the crankshaft. The deformation body compensates for leading or lagging of the crankshaft with respect to the pulling medium roller.

Abstract: In order to create a starter device (100) for starting an internal combustion engine, in particular for hand-held tools, chainsaws, lawnmowers, strimmers and the like, with a rotatable pulling medium roller (2) which can be brought into functional connection with the crankshaft of the internal combustion engine in order to bring about a rotation of the crankshaft, which starter device has a simply configured functional connection between the crankshaft and the pulling medium roller and effectively reduces the force peaks reaching the pulling medium roller, it is proposed that a deformation body (3) with an elastic deformation behaviour is arranged in the functional connection between the pulling medium roller (2) and the crankshaft, in which deformation body a leading or lagging of the crankshaft with respect to the pulling medium roller (2) can be compensated.

Abstract: In order to improve a pull-rope type starting device (100) for an one internal combustion engine, having at least one rope drum (4) which is rotatably held in a housing (1), wherein said starting device, for generating the drive torque for the motor shaft by means of a starter handle, is rotatable by way of a starter rope or pull-rope, and by way of an elastic coupling element (6) connected to a ratchet-type engaging element, by means of which the drive torque can be transmitted to the motor shaft, such that the elastic coupling element (6) or a part thereof can simply, effectively and reliably be prevented from entering a design-related gap between the rope drum (4) and the engaging element (5), it is proposed that a bushing or sleeve (8) be provided in this gap.

Abstract: In order to improve a pull-rope type starting device (100) for an one internal combustion engine, having at least one rope drum (4) which is rotatably held in a housing (1), wherein said starting device, for generating the drive torque for the motor shaft by means of a starter handle, is rotatable by way of a starter rope or pull-rope, and by way of an elastic coupling element (6) connected to a ratchet-type engaging element, by means of which the drive torque can be transmitted to the motor shaft, such that the elastic coupling element (6) or a part thereof can simply, effectively and reliably be prevented from entering a design-related gap between the rope drum (4) and the engaging element (5), it is proposed that a bushing or sleeve (8) be provided in this gap.

Abstract: A starting device is provided for an internal combustion engine, in particular a pull-rope type starting device for a two-stroke or four-stroke motor. The starting device includes a pulley or rope drum which is rotatably held in a housing, and generates the drive torque for a motor shaft by means of a starter handle or pull handle. The starting device is rotatable by way of a load transfer means, in particular by way of a starter rope or pull-rope, and by way of an elastic coupling element, in particular by way of a spiral spring. A ratchet-type engaging element is provided, by means of which the drive torque can be transmitted to the motor shaft, such that not only is overloading of the elastic coupling element prevented in a safe and reliable manner, but also, even if the elastic coupling element should break, the starting still functions, and the internal combustion engine can still be started.

Abstract: In order to improve a starting device (100) for at least one internal combustion engine, in particular a pull-rope type starting device for at least one two-stroke or four-stroke motor, which comprises at least one pulley or rope drum (4) which is rotatably held in at least one housing (1), wherein said starting device, for generating the drive torque for the motor shaft by means of at least one handle (10), in particular by means of at least one starter handle or pull handle, is rotatable by way of at least one load transfer means (9), in particular by way of at least one starter rope or pull-rope, and by way of at least one elastic coupling element (6), in particular by way of at least one spiral spring, is connected to at least one engaging element (5), in particular to at least one ratchet-type engaging element, by means of which the drive torque can be transmitted to the motor shaft, such that not only is overloading of the elastic coupling element (6) prevented in a safe and reliable manner, but also, e

Abstract: In order to improve a starting device (100) for at least one internal combustion engine, in particular a pull-rope type starting device for at least one two-stroke or four-stroke motor, which comprises at least one pulley or rope drum (4) which is rotatably held in at least one housing (1), wherein said starting device, for generating the drive torque for the motor shaft by means of at least one handle (10), in particular by means of at least one starter handle or pull handle, is rotatable by way of at least one load transfer means (9), in particular by way of at least one starter rope or pull-rope, and by way of at least one elastic coupling element (6), in particular by way of at least one spiral spring, is connected to at least one engaging element (5), in particular to at least one ratchet-type engaging element, by means of which the drive torque can be transmitted to the motor shaft, such that the elastic coupling element (6) or a part thereof can simply, effectively and reliably be prevented from enteri

Abstract: A chain medium pump (20) for a motor chain saw (10) is made disconnectable in a simple manner, the chain medium pump (20) sucking the chain medium over a suction pipe (29) from a tank (22) and delivering it over a pressure pipe (27) to a sawing device (12) of the motor chain saw (10), by the fact that, for disconnecting the supply of the sawing device (12) with the chain medium, there exist controllable means (23-26) with which the pressure pipe (27) is interrupted, the chain medium pump (20) being running, and simultaneously the chain medium delivered by the chain medium pump (20) can be returned into the suction pipe (29).

Abstract: A magnetically energized ignition system (10, 24) for a small engine includes a rotary magnet system (11, 25) driven by the crank shaft of the engine, a charging coil (12, 26) in which a voltage is induced by the rotating magnet system (11, 25) an energy store (12, 28) which is charged by the charging coil (12, 26), a voltage converter (19, 34) which is connected with the energy store (12, 28) and creates a transformed high ignition voltage, a spark plug (23, 35) connected with the output of the voltage converter (19, 34), a crank shaft position indicator (14, 29), and a switch element (13, 27) controlled by the crank shaft position indicator and which has an effect on the energy store (12, 28), and reduces the disadvantages of known ignition systems, especially saving costs in respect to known ignition systems, especially by making possible the saving of costs in respect to high voltage cabling, the ignition system also being particularly suited to the narrow space requirements of small motors in that the vo

Abstract: In a series-wound motor with electric brake, which comprises an armature provided with an armature winding and at least two exciter coils mounted on pole shoes as well as switchgear which, in the operative phase of the motor, serially connect the exciter coils with the armature winding and connect the serial connection to terminal clamps for the operating voltage and which, in the braking phase, interrupt the connection to the terminal clamps and short-circuit the armature winding by the parallel connection of a winding, an independent optimization of the braking behavior is made possible in that at least one of the exciter coils is subdivided into two part windings and in that, when braking, one of the part windings has its polarity changed and is short-circuited with the armature winding.