Abstract: The present invention relates to a tank ventilation device (1) for a motor vehicle, with at least one storage device (2) for storing hydrocarbon gas, the tank connection (9) of which is connected via a ventilation line (12) to a fuel tank (5) of a vehicle, the engine connection (10) of which is connected via a regeneration line (13) to a fresh gas system (6) of an internal combustion engine (4) of the vehicle, and the environment connection (11) of which communicates via an environment line (15) with the environment (7) of the vehicle. In order to reduce hydrocarbon emissions, at least one conversion device (3) can be provided, which is used for materially converting hydrocarbon gas and is connected directly or indirectly to the fuel tank (5) via a feed line (18) on the input side.

Abstract: The present invention relates to a tank ventilation device (1) for a motor vehicle, with at least one storage device (2) for storing hydrocarbon gas, the tank connection (9) of which is connected via a ventilation line (12) to a fuel tank (5) of a vehicle, the engine connection (10) of which is connected via a regeneration line (13) to a fresh gas system (6) of an internal combustion engine (4) of the vehicle, and the environment connection (11) of which communicates via an environment line (15) with the environment (7) of the vehicle. In order to reduce hydrocarbon emissions, at least one conversion device (3) can be provided, which is used for materially converting hydrocarbon gas and is connected directly or indirectly to the fuel tank (5) via a feed line (18) on the input side.

Abstract: In order to simplify the construction of the mounting arrangement in a sweeping machine including a rotatably driven brushing roller which is rotatably mounted at each end in a frame and is driven at one end by a gear wheel which forms the mounting for the brushing roller at this end and the teeth of which engage in driver recesses in the brushing roller, it is proposed that the brushing roller be displaceable in an axial direction against the effect of a spring towards the gear wheel to such an extent that the mounting of the brushing roller at the end thereof remote from the gear wheel will disengage, and that the teeth of the gear wheel should engage in the driver recesses with so much play that the thus axially displaced brushing roller can be pivoted out from the region of the mounting by at least the radius of the brushing roller at said end remote from the gear wheel.

Abstract: In order to facilitate moving with a cleaner comprised, on one side, of two parallel brush-rollers secured to a frame and actuated so as to rotate in opposite directions and, on the other side, of a push bar attached to the frame, it is suggested by the invention that the push bar be fixed at a distance from the frame in the direction of the rotating axis of the brush-rollers and rotationally fixed to the frame to enable a rotation following a cycle parallel to the axis of rotation.