Patent ID: 8776314

Claim:
A roller comprising a wheel and a locking device, an activating part acting on the locking device for releasing or locking in a position that corresponds to a directional lock and/or in a position that corresponds to a total lock, and the activating part being movable by a drive, a linear movement of a transmission part that is generated by the drive being transmitted via spring force to the activating part in order to move the activating part, and the activating part, in a position corresponding to the total lock or in a position corresponding to the directional lock, being movable relative to the transmission part, against a spring supported on the transmission part, into a release position via an actuating handle that is movable independently of the drive so as to override the total lock or the directional lock, the transmission part being stationary during the total lock or during the directional lock, wherein a geometric axis of rotation of the actuating handle is disposed on the same side as the activating part with respect to an axis of rotation of the wheel, the activating part being disposed offset with respect to the axis of rotation of the wheel and being oriented vertically.