Abstract: A sealing device for a rotating machine includes a shaft rotating with respect to a housing containing a fluid. The sealing is provided between the shaft and the housing. The sealing device includes a first labyrinth arranged between the shaft and the housing, fins secured to the shaft and arranged in the first labyrinth, the fins being intended to discharge the fluid entering the first labyrinth toward the inside of the housing. The sealing device makes it possible to prevent any leak of fluid without friction at the junction between the shaft and the housing.

Abstract: The invention relates to a device for coupling two shafts intended to rotate in the continuation of one another about an axis. The device comprises a dog clutch allowing the driving shaft to drive the driven shaft, and declutching means allowing the dog clutch to be uncoupled from a clutch-engaged position to a declutched position. The declutching means comprise at least one first channel secured to a driving element of the dog clutch, the first channel having the shape of a portion of a torus about the axis, at least one second channel secured to the driving shaft, the second channel having a helical shape about the axis element intended to roll between the first and in the second channel.

Abstract: The invention relates to a sealing device for a rotating machine comprising a shaft (2) rotating with respect to a housing (4) containing a fluid (7). The sealing is provided between the shaft (2) and the housing (4). The sealing device comprises a first labyrinth (12) arranged between the shaft (2) and the housing (4), fins (20) secured to the shaft (2) and arranged in the first labyrinth (12), the fins (20) being intended to discharge the fluid (7) entering the first labyrinth (12) toward the inside of the housing (4). The invention makes it possible to prevent any leak of fluid (7) without friction at the junction between the shaft (2) and the housing (4).

Abstract: A device is disclosed for coupling two shafts for rotating in the prolongation of one another with respect to a casing. A dog clutch ensures that the two shafts are coupled. The device comprises a clutch release uncouple the dog clutch. The clutch release comprises a screw secured to one of the shafts, a nut secured to a flywheel and cooperating with the screw. The screw and nut have an axis coinciding substantially with the axis of rotation of the shafts, and a brake for braking the rotation of the flywheel with respect to the casing, and, in the clutch engagement position, the braking of the flywheel slackens the nut of the screw and drives one of the shafts in translational motion along said axis, so as to uncouple the dog clutch. The structure of the clutch release makes it possible to uncouple the shafts when these are in rotation.

Abstract: The invention relates to a device for coupling two shafts intended to rotate in the continuation of one another about an axis. The device comprises a dog clutch allowing the driving shaft to drive the driven shaft, and declutching means allowing the dog clutch to be uncoupled from a clutch-engaged position to a declutched position. The declutching means comprise at least one first channel secured to a driving element of the dog clutch, the first channel having the shape of a portion of a torus about the axis, at least one second channel secured to the driving shaft, the second channel having a helical shape about the axis, and a rolling element intended to roll between the first and in the second channel.

Abstract: The invention relates to a device for coupling two shafts that are intended to rotate in the continuation of one another with respect to a casing (4). A dog clutch couples the two shafts. The device comprises clutch-release means allowing the dog clutch (9) to be uncoupled. According to the invention, the clutch-release means comprise a ramp (17) secured to the casing (4), the ramp (17) having a helical shape around the axis (1), a flat disk (19) secured to the first shaft (3) the plane of which is more or less perpendicular to the axis (1), an element (20) intended to roll between the ramp (17) and the disk (19) so as to cause a translational movement of the first shaft (3) with respect to the casing (4) more or less along the axis (1), the translational movement allowing the dog clutch (9) to be uncoupled. The specific structure of the clutch-release means enables the shafts to be uncoupled while they are in rotation.

Abstract: An unpressurised aeronautical generator (2), is provided which includes a two stage oil pump (6) comprising a centrifugal pump (8) and a gerotor pump (26). The centrifugal punp draws oil through openings (18) in a manifold, pressurises it and supplies it to the gerotor pump. The gerotor pump then pumps the pressurised oil throughout the generator. A small gerotor pump is used, which is still sufficient to operate at low pressures and high altitudes.

Abstract: The invention relates to a device for coupling two shafts which are intended for rotating in the prolongation of one another with respect to a casing. A dog clutch ensures that the two shafts are coupled.

Abstract: The invention relates to a device for coupling two shafts that are intended to rotate in the continuation of one another with respect to a casing (4). A dog clutch couples the two shafts.

Abstract: A diode assembly having electrodes and a case assembled without soldering or crimping, wherein the electrodes are maintained connected to respective opposite faces of a diode chip by simple intimate contact of electrical and thermal conduction under the permanent action of a pressure exerted by an elastic element. The case is closed by a cover kept solidly in closing position by a simple wedging effect under a continuous thrust exerted by the elastic element.