Abstract: A clutch for transmitting and limiting torque from a driving side, including a driving machine with a hub, to a driven side, and including a driven device. One pressure ring is located on the driving side, and a second pressure ring is located on the driven side. The pressure rings each include a lateral surface which face each other. At least one of the lateral surfaces has depressions formed therein. A locking spring element surrounds the hub and is in positive, detachable, active connection with the depressions. The active connection positively engages to transmit torque between the pressure rings and detaches to limit the torque transmitted between the pressure rings.

Abstract: An elastic axially and angularly yieldable torque transmitting coupling which can be installed between a driving unit and a driven unit has a flange receiving torque from the driving unit and a hub which serves to transmit torque to the driven unit. The hub has an annulus of spherical external teeth in mesh with an annulus of internal teeth on a sleeve-like plastic member of the flange. The flange further includes a plastic supporting member which receives torque from the driving unit and an elastomeric connector which is located between and is vulcanized to the two members. The flange and the hub define a chamber which is surrounded by the elastomeric connector and is ventilated to prevent overheating of the connector. The ventilating system includes a circular array of air-admitting openings in the sleeve-like member radially inwardly of the connector, and a circular array of air-evacuating openings which are provided in the connecting member radially outwardly of the air-admitting openings.

Abstract: A yieldable coupling wherein an externally toothed hub which can transmit torque to a rotary driven unit mates with an internally toothed sleeve forming part of a flange further having a support connectable to the output element of a rotary driving unit and an elastomeric connector between the support and the sleeve. The connector can include one or more rubber rings which are vulcanized to the adjacent components of the flange. A needle bearing or a friction bearing can be interposed between the hub and the connector.