Patent ID: 8146727

Claim:
Clutch ( 20 ) for transmitting torque between a shaft ( 2 ) and a roller ( 30 ) arranged coaxially around the shaft ( 2 ), comprising pneumatically actuatable means for selectively interrupting or producing a force flow between the shaft ( 2 ) and roller ( 30 ), characterized in that the clutch ( 20 ) is arranged inside the roller ( 30 ) coaxially between the shaft ( 2 ) and roller ( 30 ), and wherein the pneumatically actuatable means comprises a pneumatic cylinder ( 3 ) with a piston ( 11 ) movable therein, the pneumatic cylinder being rotatably mounted relative to the shaft ( 2 ) and the roller ( 30 ) with the piston ( 11 ) acting on a rotatably arranged clutch disc ( 8 ) non-rotationally connected to the shaft ( 2 ) or roller ( 30 ) for pressing said clutch disc, on actuation of the clutch, against a corresponding face ( 13 ) non-rotationally connected to the roller ( 30 ) or shaft ( 2 ), or alternatively for lifting said clutch disk from said corresponding face ( 13 ).