Abstract: The Vacuum Cleaner features a vacuum chamber (3), in which a negative pressure is generated by a blower (6), and an liquid container (4) arranged underneath vacuum chamber. The vacuum chamber (3) is separated from the liquid container (4) by a partition (19) with an aperture in the center, which is shielded by a cover (21). A suction line (9) leads to the bottom of the liquid container (4). It transports the dust into the liquid container (4), where it is bound by water. To tranquilize the turbulences developing in the liquid, lamellae (11) are arranged transverse to the suction line (9) in staggered position to each other and extending only over part of the cross section of the vacuum chamber (4). This configuration as well as the arrangement of the cover (21) prevent liquid particles from being swept along into the vacuum chamber (3).

Abstract: An impact tool for dressing metal sheets, particularly for repairing damaged vehicle bodies, has a tool carrier, in a bore of which there are guided at least two jaws separated from each other in the rest position of the tool by resilient elements, e.g. springs or rubber elements. The jaws are guided for a limited stroke between a rigid abutment formed by the front face of the tool carrier and a stop formed by a bolt fixed to the tool carrier and intersecting holes of the stems of the jaws with play. The jaws are loaded by at least one resilient element, e.g. a helical spring, abutted with its one end against the end of the bore of the tool carrier and with its other end against the inner end of each jaw. Surfaces having portions diverging in direction to the outer ends of the jaws force the jaws radially inwardly when the jaws hit the metal sheet to be treated.