Abstract: A vacuum cleaner has a housing with an inlet which can be closed by a cover. A dust bag can be installed in the housing suspended from a plate which is located inwardly of the cover and has two openings both of which communicate with the interior of the bag. The cover carries a suction nipple which sealingly enters one of the openings when the cover is closed. A connecting nipple is also carried by the cover and sealingly enters the other opening when the cover is closed. The entire connecting nipple, or a diaphragm mounted in the same, moves in direction towards the cover when, in response to increasing filling of the bag and clogging of the filter pores thereof, the pressure in the bag rises to a level higher than the pressure at the other side of the connecting nipple or diaphragm, respectively. This movement is transmitted to an indicator observable from the exterior of the vacuum cleaner and provides an indication of the degree to which the bag is filled.

Abstract: A filler cap for the container of a household mixer with a locking arrangement including a filler tube with a filling opening to receive the products to be mixed, which is arranged concentrically to the axis of rotation of the mixer and a sealing ring. The filler tube is provided with ribs tangently positioned to the filling opening and extending from the filling opening to the sealing ring which is positioned at a lower side of the filler tube. In operation the ribs produce an effect tending to hold the filler cap in its position on the container.