Abstract: An impeller device (10) for centrifugal fans (1), having comprising a center wheel (40), at least one side disc (20, 30) and fan blades (50). The center wheel (40) and the side disc(s) (20, 30) are equipped with attachment devices (24, 44) for attaching the blades and the center wheel's (40) attachment device (44) comprises a protrusion (45) extending substantially in the center wheel's radial direction and arranged to abut against the second side end (54) in the fan blades (50).

Abstract: According to the invention, a system is provided for connecting two vessels to each other or for connecting a vessel to a land-based structure for the transfer of objects. The system according to the invention comprises at least one projecting body adapted for attachment to one of the vessels and at least one receiving means adapted for attachment to the other vessel or to the land-based structure, the receiving means also comprising side members with recesses for cooperation with the projecting bodies. The invention also comprises a method for transferring material and a landing vessel for connecting to a cargo vessel.

Abstract: Vehicle for operation on various grounds, including a hull (1) having a first sidehull (10) and a second sidehull (12), a front skirt device (14), a stern skirt device (16), and side skirt devices (18) having side skirt elements (54) movably fastened to the hull (1) by means of a platform arrangement (20) between a first position and a second position.

Abstract: According to the invention, a system is provided for connecting two vessels to each other or for connecting a vessel to a land-based structure for the transfer of objects. The system according to the invention comprises at least one projecting body adapted for attachment to one of the vessels and at least one receiving means adapted for attachment to the other vessel or to the land-based structure, the receiving means also comprising side members with recesses for cooperation with the projecting bodies. The invention also comprises a method for transferring material and a landing vessel for connecting to a cargo vessel.

Abstract: The invention relates to an impeller device (10) for centrifugal fans (1), comprising a centre wheel (40), at least one side disc (20, 30) and fan blades (50). The invention is characterised in that the centre wheel (40) and the side disc(s) (20, 30) are equipped with attachment devices (24, 44) for attaching the blades and the centre wheel's (40) attachment device (44) comprises a protrusion (45) extending substantially in the centre wheel's radial direction and arranged to abut against the second side end (54) in the fan blades (50).