Abstract: An exhaust valve assembly for use in an exhaust system includes a body region and an auxiliary region. The body region has first and second ends and defines a longitudinal axis defined between the ends. The body region has an interior surface terminating at the ends and defines a flow path along the axis and an opening. The auxiliary region is coupled to the body region about the opening. The auxiliary region has at least one wall that defines a space in communication with the opening outside the flow path. The exhaust valve assembly further includes a shaft coupled to the wall of the auxiliary region and a vane coupled to the shaft. The vane is movable between an open position with the vane disposed entirely within the auxiliary region and a closed position with at least a portion of the vane disposed in the body region intersecting the axis.

Abstract: A flexible conduit assembly for transmitting exhaust from a combustion engine to an atmosphere includes first and second conduits and a coupler for coupling the first and second conduits. The coupler includes a bellows, a flexible intermediate element surrounding the bellows, first and second flanges disposed over the intermediate element, and an outer insulating element surrounding the intermediate element and supported by the flanges. The coupler further includes first and second extensions coupled to the intermediate element and projecting outwardly from the intermediate element. The first extension spaces the first flange from the intermediate element to define a first air gap, and the second extension spaces the second flange from the intermediate element to define a second air gap. The first and second flanges dispose a portion of the outer element above the intermediate element to define a third air gap.

Abstract: A flexible conduit assembly for transmitting exhaust from a combustion engine to an atmosphere includes first and second conduits and a coupler for coupling the first and second conduits. The coupler includes a bellows, a flexible intermediate element surrounding the bellows, first and second flanges disposed over the intermediate element, and an outer insulating element surrounding the intermediate element and supported by the flanges. The coupler further includes first and second extensions coupled to the intermediate element and projecting outwardly from the intermediate element. The first extension spaces the first flange from the intermediate element to define a first air gap, and the second extension spaces the second flange from the intermediate element to define a second air gap. The first and second flanges dispose a portion of the outer element above the intermediate element to define a third air gap.

Abstract: An exhaust valve assembly for use in an exhaust system includes a body region and an auxiliary region. The body region has first and second ends and defines a longitudinal axis defined between the ends. The body region has an interior surface terminating at the ends and defines a flow path along the axis and an opening. The auxiliary region is coupled to the body region about the opening. The auxiliary region has at least one wall that defines a space in communication with the opening outside the flow path. The exhaust valve assembly further includes a shaft coupled to the wall of the auxiliary region and a vane coupled to the shaft. The vane is movable between an open position with the vane disposed entirely within the auxiliary region and a closed position with at least a portion of the vane disposed in the body region intersecting the axis.