The invention relates to a cardan mounting for an air vent, comprising a fixed part and a moving part, which are each pivotably attached to a cardan ring, wherein the two pivoting axes are arranged at right angles to one another. The cardan ring is elastically deformable, circular-ring-shaped in the uninstalled state and extended along one pivoting axis and compressed along the other pivoting axis, as compared with the circular shape, in the installed state. The invention furthermore relates to an air vent having a cardan mounting of this kind.

According to one embodiment, a constant velocity (CV) joint includes a first yoke, a second yoke, and three bearings. The first yoke is configured to be rotatably coupled to an input device about a first axis and configured to receive the input device through a first opening. The second yoke is rotatably coupled to the first yoke about a second axis and rotatably coupled to an output device about a third axis. The first bearing is disposed about the first axis adjacent to the first yoke, the second bearing is disposed about the second axis adjacent to the first yoke or the second yoke, and the third bearing disposed about the third axis adjacent to the second yoke. The first and third bearings torsionally constrain movement the first yoke and the second yoke so as to achieve a substantially CV characteristic between the input device and the output device.

According to one embodiment, a constant velocity (CV) joint includes a first yoke, a second yoke, and three bearings. The first yoke is configured to be rotatably coupled to an input device about a first axis and configured to receive the input device through a first opening. The second yoke is rotatably coupled to the first yoke about a second axis and rotatably coupled to an output device about a third axis. The first bearing is disposed about the first axis adjacent to the first yoke, the second bearing is disposed about the second axis adjacent to the first yoke or the second yoke, and the third bearing disposed about the third axis adjacent to the second yoke. The first and third bearings torsionally constrain movement the first yoke and the second yoke so as to achieve a substantially CV characteristic between the input device and the output device.

An elastic junction device for the dynamic connection, in a rolling mill, between the motor side and the head of an adapter or between the adapter and one or more rolling rolls comprises a central body which can be connected to an end of said flange so that it can rotate integrally therewith. The device additionally comprises two skids through a connecting pin so that said block rotates integrally with said flange, said skids being mechanically couplable to said adapter to allow the rotation thereof upon the rotation of said flange and vice versa. The junction device comprises at least a first damper element and at least a second damper element housed in the block and which act on opposite parts of the connecting pin so as to absorb the axial tensions which are transmitted along the adapter as a result of the stresses caused by rolling.

Eccentric screw pump with a rotor of a drive shaft circulating essentially about a fixed axis in relation to the stator in a bearing block, a power train and a screw conveyor, which revolves in a rotating-oscillating manner in a screw flight of the stator, wherein the power train provides the screw conveyor with its drive torque and the power train adjusts the differences of the motion sequences of the screw conveyor and of the drive shaft, wherein the power train consists essentially of a one-piece rotational body, which has multiple weakening recesses, which interrupt its outer circumferential jacket surface more than only insignificantly and which provide it with that reversible elasticity, which it requires in order to rotate about an axis of rotation, which curves in a periodically recurring manner at least in sections.

A Coupling device may be used to connect a drive shaft of an actuator to a driven shaft of an exhaust-gas valve. The coupling device may define a rotational axis and include a torsionally rigid retainer having an axially extending slot, a coupling rod received in the slot for translational movement relative to the retainer in the direction of the rotational axis, and an elastic element biasing the coupling rod in the direction of the rotational axis and having an attachment section fixed to the retainer. The retainer and the coupling rod may be non-rotatably connected.

Eccentric screw pump with a rotor of a drive shaft circulating essentially about a fixed axis in relation to the stator in a bearing block, a power train and a screw conveyor, which revolves in a rotating-oscillating manner in a screw flight of the stator, wherein the power train provides the screw conveyor with its drive torque and the power train adjusts the differences of the motion sequences of the screw conveyor and of the drive shaft, wherein the power train consists essentially of a one-piece rotational body, which has multiple weakening recesses, which interrupt its outer circumferential jacket surface more than only insignificantly and which provide it with that reversible elasticity, which it requires in order to rotate about an axis of rotation, which curves in a periodically recurring manner at least in sections.

Eccentric screw pump with a rotor of a drive shaft circulating essentially about a fixed axis in relation to the stator in a bearing block, a power train and a screw conveyor, which revolves in a rotating-oscillating manner in a screw flight of the stator, wherein the power train provides the screw conveyor with its drive torque and the power train adjusts the differences of the motion sequences of the screw conveyor and of the drive shaft, wherein the power train consists essentially of a one-piece rotational body, which has multiple weakening recesses, which interrupt its outer circumferential jacket surface more than only insignificantly and which provide it with that reversible elasticity, which it requires in order to rotate about an axis of rotation, which curves in a periodically recurring manner at least in sections.