Abstract: The present invention relates to a coupling device for connecting a drive shaft of an actuator to a driven shaft of an exhaust-gas valve, the coupling device defining a rotational axis and comprising 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; wherein the coupling rod is rotationally movable for a predetermined tensioning angle within the slot relative with regard to the retainer.

Abstract: Gas flow and sound control valve for an exhaust system of an internal combustion engine comprising a housing including an inlet, a first outlet, and a second outlet, and a valve member arranged within the housing for forming a first conduit connecting the inlet to the first outlet and/or a second conduit from the inlet to the second outlet, wherein the valve member can be moved relative to the housing between a first predetermined position in which the valve member closes the second conduit and a second predetermined position in which the valve member closes the first conduit, whereby the valve member is rotatable around a valve axis aligned parallel, in particular coaxial, to a centerline of the inlet.