Abstract: A torque limiting coupling for a driveline includes a fluid chamber within a twin walled sleeve for providing a fictional engagement with a shaft. A shear-off tube is in fluid connection with the fluid chamber and is assigned to a shear-off gate. The shear-off gate is fixedly connected to the shaft for opening the fluid chamber by shearing the shear-off tube with the shear-off gate. At least a first shear-off tube and a second shear-off tube are provided for closure of the fluid chamber and for interaction with the shear-off gate. The shear-off gate has at least one cut-off edge. At a position of a blockage of one of the shear-off tubes by one cut-off edge, the other shear-off tube is positioned at an unblocked position.

Abstract: A safety coupling has a driving coupling member engaged with a driven coupling member by a frictional connection. The frictional connection can be disconnected by activation of a release element. The release element can be activated by a centrifugal device wherein a centrifugal unit of the centrifugal device is radially moveable to interact with a shift gate in dependence of the revolution speed of the centrifugal unit and the slip between the driving coupling member and the driven coupling member. The centrifugal device includes a stop to limit the centrifugal force applied to the centrifugal unit.

Abstract: A safety coupling has a driving coupling member engaged with a driven coupling member by a frictional connection. The frictional connection can be disconnected by activation of a release element. The release element can be activated by a centrifugal device wherein a centrifugal unit of the centrifugal device is radially moveable to interact with a shift gate in dependence of the revolution speed of the centrifugal unit and the slip between the driving coupling member and the driven coupling member. The centrifugal device includes a stop to limit the centrifugal force applied to the centrifugal unit.

Abstract: The present invention comprises a safety mechanism (2, 3, 3a, 3b), which is related to and/or integrally formed with a safety coupling (1), wherein the safety coupling, with a related safety mechanism (3a) actuatable toward and into an initial active retaining position or toward and into a final inactive releasing position, is adapted, upon rotary motion, to allow for the transmission of torque between a first, driving coupling member (10) and a second, driven coupling member (20) and wherein said actuatable safety mechanism is adapted to be actuatable in a displacement from an initial active position, via a number of intermediate positions, to a final inactive position.

Abstract: The present invention comprises a safety mechanism (2, 3, 3a, 3b), which is related to and/or integrally formed with a safety coupling (1), wherein the safety coupling, with a related safety mechanism (3a) actuatable toward and into an initial active retaining position or toward and into a final inactive releasing position, is adapted, upon rotary motion, to allow for the transmission of torque between a first, driving coupling member (10) and a second, driven coupling member (20) and wherein said actuatable safety mechanism is adapted to be actuatable in a displacement from an initial active position, via a number of intermediate positions, to a final inactive position.