Patent ID: 7806097

Claim:
A device for starting an internal combustion engine for handheld equipment including chain saws, lawn mowers, and lawn trimmers, or vehicles including mopeds, boats or miniature aircraft, comprising: an output element into which a starter torque is introduced when the starting device is actuated, wherein the output element is formed by a pulling means spool that generates a variable rotational speed when a starter pulling means is uniformly unwound from the pulling means spool; and a functional connection comprising a gear unit arranged between the pulling means spool and a crankshaft of the internal combustion engine in order to introduce a crankshaft torque therein, wherein the gear unit is formed as a cam roller gear having a coupling element and transmits the starter torque of the pulling means spool to the crankshaft with a step-up or step-down ratio that varies depending upon the rotational angle of the crankshaft, said coupling element comprising a roll track lever and a centrifugal clutch, said roll track lever introducing a variable crankshaft torque into the crankshaft depending on the rotational angle of the crankshaft at a constant starter torque in the pulling means spool and said centrifugal clutch releasing the pulling means spool from the crankshaft after the internal combustion engine has started.