Abstract: The present invention relates to a winding (1) for a stator element of an electromagnetic motor or generator, and to the method for producing it. This winding (1) comprises at least two interwoven conductive limbs (10, 10?, 10?) each corresponding to a phase of an electric current, at least one limb (10, 10?, 10?) of the winding being rigid and a in single component. The invention also relates to a permanent-magnet electromagnetic motor or generator comprising such a winding (1). Such a motor or generator is preferably, but non-limitingly applicable under non-ambient temperature or pressure conditions. The invention also relates to a method for producing such a winding (1) from a blank of at least one material by material removal or by casting in a mold of at least one component material for each of the limbs (10, 10?, 10?).

Abstract: This device for mounting a propeller blade in a hub, of the type in which a blade base is mounted in rotation in a hub housing by means of at least two bearings and where a preloading device permitting axially preloading the two bearings comprises a holding ring mounted between one of the two bearings and hub so as to allow an axial displacement of ring relative to hub, in that holding ring is mounted rotatingly between bearing and hub by means of rolling elements and helical tracks arranged to drive an axial displacement of ring during rotation of this ring, means being provided to cause ring to rotate according to a predefined law.

Abstract: This device for mounting a propeller blade in a hub, of the type in which a blade base is mounted in rotation in a hub housing by means of at least two bearings and where a preloading device permitting axially preloading the two bearings comprises a holding ring mounted between one of the two bearings and hub so as to allow an axial displacement of ring relative to hub, in that holding ring is mounted rotatingly between bearing and hub by means of rolling elements and helical tracks arranged to drive an axial displacement of ring during rotation of this ring, means being provided to cause ring to rotate according to a predefined law.

Abstract: A device for detecting and recording impacts along several axes on an aeronautic propeller blade is provided. The device has an accelerometer integrated inside an aeronautic propeller blade root end and an electronic module for recording during its life span any occurrence of impacts at various predetermined levels.

Abstract: A device for detecting and recording impacts along several axes on an aeronautic propeller assembly, which has a hub and two blades, is provided. The device has a plurality of accelerometers integrated with the hub of the aeronautic propeller assembly and arranged at the respective root end of a plurality of blades, and an electronic module for recording during the life span any occurrence of shocks at various predetermined levels.

Abstract: A process of manufacturing at least a nut of a ball-type feed screw and nut system separately from its fastening element and then joining the nut to its fastening element by a connector so as to produce an assembly designed for the specific requirement of each use of the ball-type feed screw and nut system. The invention is used, in particular, in drive devices for machine tools.

Abstract: In order to machine skew surfaces, adjacent cylindrical shaping rollers in adjacent relation are each freely mounted for rotation on roller support frames which are each capable of relative backward or forward longitudinal displacement under the action of a numerical control system. An abrasive belt which is applied against a portion of the periphery of the set of shaping rollers assumes during this portion of travel a configuration corresponding to the instantaneous envelope curve of the transverse cross-sections of the rollers and thus constitutes a tool which provides a variable profile for abrasive machining operations.