Abstract: An air knife device for regulating the thickness of a layer deposited on a strip at the output of a bath, comprising at least one nozzle defined by two lips spaced a small distance apart, the nozzle being supplied with pressurized fluid in order to blow at least one flat jet of fluid onto the strip. The device is associated with at least one fluid cushion stabilizer arranged on at least one side of the nozzle along one of its lips and comprising a substantially flat wall extending from this lip in a direction substantially parallel to the strip so as to define a thin, flat space between the wall and the strip. A fluid is introduced into this space for the formation of a fluid cushion which is able to stabilize the vibrations of the strip.

Abstract: A device for regulating the thickness of a metal deposit formed on a strip emerging from a galvanization bath, comprising at least one nozzle for blowing air provided between the opposite, narrowly spaced ends of two jars. The air knife forming slot is delimited by two flat, parallel faces defining the direction of the air blade, one of these faces being provided on a deformable lip extending inside a hollow provided at the end of a first jaw and being slidable along a flat retaining face substantially perpendicular to the direction of the air knife and deforming the flat face by the action of an arrangement to adjust the width of the slot.