Patent ID: 8668065

Claim:
A torque limiting coupling rotatably arranged around a longitudinal axis comprising: a coupling hub with circumferentially distributed through openings; drivers are displaceably held parallel to the longitudinal axis in the openings; a coupling sleeve has first recesses corresponding to the through openings; a switching disk is rotatably arranged between a switched-on position and an idling position relative to the coupling hub, in the switched-on position, the drivers engage in the first recesses for torque transmission, and when the switching disk exceeds a predetermined torque, the switching disk is transferred from the switched-on position into the idling position by a rolling movement of the drivers, the switching disk has second recesses corresponding to the through openings and the drivers engage the second recesses in the idling position; a first spring mechanism urges the switching disk in a direction towards the switched-on position; a second spring mechanism acts axially on the switching disk and urges the drivers against the coupling sleeve; an actuator moves between a releasing position and a braking position, and in the braking position, the actuator interacts with a braking element which is in frictional contact with the switching disk such that during relative movement between the braking element and the switching disk a braking torque is applied from the braking element to the switching disk by a friction force between the braking element and the switching disk.