Abstract: The invention relates to a gas bearing with a bearing surface arranged on a gas permeable element to which a pressure medium can be supplied from an external source. The bearing surface is arranged on a less permeable surface layer, through which holes are made. In order to ensure good gas flow through the holes, the holes extend into the porous material a distance corresponding to at least half the diameter of the holes, and those portions of the holes which are situated inside said surface layer are limited by porous material.

Abstract: A device for disinfecting the gap between two relatively movable elements such as a shaft and housing wherein a gap is defined by those elements and the gap contains a gaseous medium which is heated by an adjacent heating loop to provide a germicidal barrier in the gap.

Abstract: A seal comprising a gap between e.g. a flange (5) on a shaft and an element (6) arranged in a surrounding housing (2) is used for separating a fluid in a space (3) in the housing from the space (4) surrounding the housing. A pressurized fluid is supplied to the gap via a conduit (8) and a pocket (7) and flows to the space (3) and the space (4). The gap tends to be closed by the fact that the element (6) is elastically supported in the housing (2) by ductile membranes (10,11) and is pressed against the flange (5) by the pressure in the space between the membranes.