Patent ID: 8622183

Claim:
A clutch drum being part of a centrifugal clutch for an internal combustion engine of a hand-held power tool, the centrifugal clutch being arranged to transmit a rotational motion of a crank shaft at higher engine speed and to declutch at lower engine speed, the clutch drum comprising: a peripheral portion, with thickness B, which is arranged to be engaged on the inside by weighted arms of a driving disc at higher engine speed, an end portion, with thickness A, joining the peripheral portion and a drum hub, characterized in that the thickness A is less than the thickness B, wherein the end portion has sufficient rigidity to prevent tilting of the peripheral portion relative to a rotational axis of the clutch drum, and a brake band wound around an outer surface of the peripheral portion, the brake band configured to frictionally engage and stop the rotation of the peripheral portion.