Patent ID: 8892324

Claim:
A safety clutch for an electric drive, the electric drive including an electric motor and a shaft drivable by the electric motor, the safety clutch comprising: at least one connecting element, torque being transmittable between the electric motor and the shaft via the at least one connecting element; and a controllable locking device associated with the at least one connecting element, the locking device capable of causing an interruption in the transmission of torque between the electric motor and the shaft, wherein the controllable locking device includes a blocking device having either a blocked or an unblocked state, and wherein in the unblocked state, the transmission of torque between the electric motor and the shaft can be interrupted through an interaction of the at least one connecting element with the shaft and the electric motor, and, in the blocked state, the transmission of torque between the electric motor and the shaft is ensured by the at least one connecting element, wherein the at least one connecting element includes a ring having a first toothing formed in at least a portion of an inner surface and a second toothing formed in at least a portion of an outer surface, the shaft and the electric motor having respective toothings, such that through the interaction of the ring with the shaft and the electric motor via the first and second and respective toothings, in the unblocked state of the blocking device, the transmission of torque between the electric motor and the shaft can be interrupted by displacement of the ring.